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1 | <?xml version="1.0" encoding="UTF-8"?> |
2 | <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN" | |
3 | "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd"> | |
4 | <refentry id="glGet"> | |
5 | <refmeta> | |
6 | <refmetainfo> | |
7 | <copyright> | |
8 | <year>1991-2006</year> | |
9 | <holder>Silicon Graphics, Inc.</holder> | |
10 | </copyright> | |
11 | </refmetainfo> | |
12 | <refentrytitle>glGet</refentrytitle> | |
13 | <manvolnum>3G</manvolnum> | |
14 | </refmeta> | |
15 | <refnamediv> | |
16 | <refname>glGet</refname> | |
17 | <refpurpose>return the value or values of a selected parameter</refpurpose> | |
18 | </refnamediv> | |
19 | <refsynopsisdiv><title>C Specification</title> | |
20 | <funcsynopsis> | |
21 | <funcprototype> | |
22 | <funcdef>void <function>glGetBooleanv</function></funcdef> | |
23 | <paramdef>GLenum <parameter>pname</parameter></paramdef> | |
24 | <paramdef>GLboolean * <parameter>params</parameter></paramdef> | |
25 | </funcprototype> | |
26 | </funcsynopsis> | |
27 | </refsynopsisdiv> | |
28 | <refsynopsisdiv><title>C Specification</title> | |
29 | <funcsynopsis> | |
30 | <funcprototype> | |
31 | <funcdef>void <function>glGetDoublev</function></funcdef> | |
32 | <paramdef>GLenum <parameter>pname</parameter></paramdef> | |
33 | <paramdef>GLdouble * <parameter>params</parameter></paramdef> | |
34 | </funcprototype> | |
35 | </funcsynopsis> | |
36 | </refsynopsisdiv> | |
37 | <refsynopsisdiv><title>C Specification</title> | |
38 | <funcsynopsis> | |
39 | <funcprototype> | |
40 | <funcdef>void <function>glGetFloatv</function></funcdef> | |
41 | <paramdef>GLenum <parameter>pname</parameter></paramdef> | |
42 | <paramdef>GLfloat * <parameter>params</parameter></paramdef> | |
43 | </funcprototype> | |
44 | </funcsynopsis> | |
45 | </refsynopsisdiv> | |
46 | <refsynopsisdiv><title>C Specification</title> | |
47 | <funcsynopsis> | |
48 | <funcprototype> | |
49 | <funcdef>void <function>glGetIntegerv</function></funcdef> | |
50 | <paramdef>GLenum <parameter>pname</parameter></paramdef> | |
51 | <paramdef>GLint * <parameter>params</parameter></paramdef> | |
52 | </funcprototype> | |
53 | </funcsynopsis> | |
54 | </refsynopsisdiv> | |
55 | <!-- eqn: ignoring delim $$ --> | |
56 | <refsect1 id="parameters"><title>Parameters</title> | |
57 | <variablelist> | |
58 | <varlistentry> | |
59 | <term><parameter>pname</parameter></term> | |
60 | <listitem> | |
61 | <para> | |
62 | Specifies the parameter value to be returned. | |
63 | The symbolic constants in the list below are accepted. | |
64 | </para> | |
65 | </listitem> | |
66 | </varlistentry> | |
67 | <varlistentry> | |
68 | <term><parameter>params</parameter></term> | |
69 | <listitem> | |
70 | <para> | |
71 | Returns the value or values of the specified parameter. | |
72 | </para> | |
73 | </listitem> | |
74 | </varlistentry> | |
75 | </variablelist> | |
76 | </refsect1> | |
77 | <refsect1 id="description"><title>Description</title> | |
78 | <para> | |
79 | These four commands return values for simple state variables in GL. | |
80 | <parameter>pname</parameter> is a symbolic constant indicating the state variable to be returned, | |
81 | and <parameter>params</parameter> is a pointer to an array of the indicated type in | |
82 | which to place the returned data. | |
83 | </para> | |
84 | <para> | |
85 | Type conversion is performed if <parameter>params</parameter> has a different type than | |
86 | the state variable value being requested. | |
87 | If <function>glGetBooleanv</function> is called, | |
88 | a floating-point (or integer) value is converted to <constant>GL_FALSE</constant> if | |
89 | and only if it is 0.0 (or 0). | |
90 | Otherwise, | |
91 | it is converted to <constant>GL_TRUE</constant>. | |
92 | If <function>glGetIntegerv</function> is called, boolean values are returned as | |
93 | <constant>GL_TRUE</constant> or <constant>GL_FALSE</constant>, and most floating-point values are | |
94 | rounded to the nearest integer value. Floating-point colors and | |
95 | normals, however, are returned with a linear mapping that maps 1.0 to | |
96 | the most positive representable integer value | |
97 | and | |
98 | <inlineequation><mml:math> | |
99 | <!-- eqn: -1.0:--> | |
100 | <mml:mn>-1.0</mml:mn> | |
101 | </mml:math></inlineequation> | |
102 | to the most negative representable integer value. | |
103 | If <function>glGetFloatv</function> or <function>glGetDoublev</function> is called, | |
104 | boolean values are returned as <constant>GL_TRUE</constant> or <constant>GL_FALSE</constant>, | |
105 | and integer values are converted to floating-point values. | |
106 | </para> | |
107 | <para> | |
108 | The following symbolic constants are accepted by <parameter>pname</parameter>: | |
109 | </para> | |
110 | <variablelist> | |
111 | <varlistentry> | |
112 | <term><constant>GL_ACCUM_ALPHA_BITS</constant></term> | |
113 | <listitem> | |
114 | <para> | |
115 | </para> | |
116 | <para> | |
117 | <parameter>params</parameter> returns one value, | |
118 | the number of alpha bitplanes in the accumulation buffer. | |
119 | </para> | |
120 | </listitem> | |
121 | </varlistentry> | |
122 | <varlistentry> | |
123 | <term><constant>GL_ACCUM_BLUE_BITS</constant></term> | |
124 | <listitem> | |
125 | <para> | |
126 | </para> | |
127 | <para> | |
128 | <parameter>params</parameter> returns one value, | |
129 | the number of blue bitplanes in the accumulation buffer. | |
130 | </para> | |
131 | </listitem> | |
132 | </varlistentry> | |
133 | <varlistentry> | |
134 | <term><constant>GL_ACCUM_CLEAR_VALUE</constant></term> | |
135 | <listitem> | |
136 | <para> | |
137 | </para> | |
138 | <para> | |
139 | <parameter>params</parameter> returns four values: | |
140 | the red, green, blue, and alpha values used to clear the accumulation buffer. | |
141 | Integer values, | |
142 | if requested, | |
143 | are linearly mapped from the internal floating-point representation such | |
144 | that 1.0 returns the most positive representable integer value, | |
145 | and | |
146 | <inlineequation><mml:math> | |
147 | <!-- eqn: -1.0:--> | |
148 | <mml:mn>-1.0</mml:mn> | |
149 | </mml:math></inlineequation> | |
150 | returns the most negative representable integer | |
151 | value. The initial value is (0, 0, 0, 0). | |
152 | See <citerefentry><refentrytitle>glClearAccum</refentrytitle></citerefentry>. | |
153 | </para> | |
154 | </listitem> | |
155 | </varlistentry> | |
156 | <varlistentry> | |
157 | <term><constant>GL_ACCUM_GREEN_BITS</constant></term> | |
158 | <listitem> | |
159 | <para> | |
160 | </para> | |
161 | <para> | |
162 | <parameter>params</parameter> returns one value, | |
163 | the number of green bitplanes in the accumulation buffer. | |
164 | </para> | |
165 | </listitem> | |
166 | </varlistentry> | |
167 | <varlistentry> | |
168 | <term><constant>GL_ACCUM_RED_BITS</constant></term> | |
169 | <listitem> | |
170 | <para> | |
171 | </para> | |
172 | <para> | |
173 | <parameter>params</parameter> returns one value, | |
174 | the number of red bitplanes in the accumulation buffer. | |
175 | </para> | |
176 | </listitem> | |
177 | </varlistentry> | |
178 | <varlistentry> | |
179 | <term><constant>GL_ACTIVE_TEXTURE</constant></term> | |
180 | <listitem> | |
181 | <para> | |
182 | </para> | |
183 | <para> | |
184 | <parameter>params</parameter> returns a single value indicating the active multitexture unit. | |
185 | The initial value is <constant>GL_TEXTURE0</constant>. | |
186 | See <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>. | |
187 | </para> | |
188 | </listitem> | |
189 | </varlistentry> | |
190 | <varlistentry> | |
191 | <term><constant>GL_ALIASED_POINT_SIZE_RANGE</constant></term> | |
192 | <listitem> | |
193 | <para> | |
194 | </para> | |
195 | <para> | |
196 | <parameter>params</parameter> returns two values, | |
197 | the smallest and largest supported sizes for aliased points. | |
198 | </para> | |
199 | </listitem> | |
200 | </varlistentry> | |
201 | <varlistentry> | |
202 | <term><constant>GL_ALIASED_LINE_WIDTH_RANGE</constant></term> | |
203 | <listitem> | |
204 | <para> | |
205 | </para> | |
206 | <para> | |
207 | <parameter>params</parameter> returns two values, | |
208 | the smallest and largest supported widths for aliased lines. | |
209 | </para> | |
210 | </listitem> | |
211 | </varlistentry> | |
212 | <varlistentry> | |
213 | <term><constant>GL_ALPHA_BIAS</constant></term> | |
214 | <listitem> | |
215 | <para> | |
216 | </para> | |
217 | <para> | |
218 | <parameter>params</parameter> returns one value, | |
219 | the alpha bias factor used during pixel transfers. The initial value is 0. | |
220 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
221 | </para> | |
222 | </listitem> | |
223 | </varlistentry> | |
224 | <varlistentry> | |
225 | <term><constant>GL_ALPHA_BITS</constant></term> | |
226 | <listitem> | |
227 | <para> | |
228 | </para> | |
229 | <para> | |
230 | <parameter>params</parameter> returns one value, | |
231 | the number of alpha bitplanes in each color buffer. | |
232 | </para> | |
233 | </listitem> | |
234 | </varlistentry> | |
235 | <varlistentry> | |
236 | <term><constant>GL_ALPHA_SCALE</constant></term> | |
237 | <listitem> | |
238 | <para> | |
239 | </para> | |
240 | <para> | |
241 | <parameter>params</parameter> returns one value, | |
242 | the alpha scale factor used | |
243 | during pixel transfers. The initial value is 1. | |
244 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
245 | </para> | |
246 | </listitem> | |
247 | </varlistentry> | |
248 | <varlistentry> | |
249 | <term><constant>GL_ALPHA_TEST</constant></term> | |
250 | <listitem> | |
251 | <para> | |
252 | </para> | |
253 | <para> | |
254 | <parameter>params</parameter> returns a single boolean value indicating whether alpha testing | |
255 | of fragments is enabled. The initial value is <constant>GL_FALSE</constant>. | |
256 | See <citerefentry><refentrytitle>glAlphaFunc</refentrytitle></citerefentry>. | |
257 | </para> | |
258 | </listitem> | |
259 | </varlistentry> | |
260 | <varlistentry> | |
261 | <term><constant>GL_ALPHA_TEST_FUNC</constant> <parameter>params</parameter> returns one value,</term> | |
262 | <listitem> | |
263 | <para> | |
264 | </para> | |
265 | <para> | |
266 | the symbolic name of the alpha test function. The initial value is | |
267 | <constant>GL_ALWAYS</constant>. | |
268 | See <citerefentry><refentrytitle>glAlphaFunc</refentrytitle></citerefentry>. | |
269 | </para> | |
270 | </listitem> | |
271 | </varlistentry> | |
272 | <varlistentry> | |
273 | <term><constant>GL_ALPHA_TEST_REF</constant></term> | |
274 | <listitem> | |
275 | <para> | |
276 | </para> | |
277 | <para> | |
278 | <parameter>params</parameter> returns one value, | |
279 | the reference value for the alpha test. The initial value is 0. | |
280 | See <citerefentry><refentrytitle>glAlphaFunc</refentrytitle></citerefentry>. | |
281 | An integer value, | |
282 | if requested, | |
283 | is linearly mapped from the internal floating-point representation such | |
284 | that 1.0 returns the most positive representable integer value, | |
285 | and | |
286 | <inlineequation><mml:math> | |
287 | <!-- eqn: -1.0:--> | |
288 | <mml:mn>-1.0</mml:mn> | |
289 | </mml:math></inlineequation> | |
290 | returns the most negative representable integer value. | |
291 | </para> | |
292 | </listitem> | |
293 | </varlistentry> | |
294 | <varlistentry> | |
295 | <term><constant>GL_ARRAY_BUFFER_BINDING</constant></term> | |
296 | <listitem> | |
297 | <para> | |
298 | </para> | |
299 | <para> | |
300 | <parameter>params</parameter> returns a single value, the name of the buffer object | |
301 | currently bound to the target <constant>GL_ARRAY_BUFFER</constant>. If no buffer object | |
302 | is bound to this target, 0 is returned. The initial value is 0. | |
303 | See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>. | |
304 | </para> | |
305 | </listitem> | |
306 | </varlistentry> | |
307 | <varlistentry> | |
308 | <term><constant>GL_ATTRIB_STACK_DEPTH</constant></term> | |
309 | <listitem> | |
310 | <para> | |
311 | </para> | |
312 | <para> | |
313 | <parameter>params</parameter> returns one value, | |
314 | the depth of the attribute stack. | |
315 | If the stack is empty, | |
316 | 0 is returned. The initial value is 0. | |
317 | See <citerefentry><refentrytitle>glPushAttrib</refentrytitle></citerefentry>. | |
318 | </para> | |
319 | </listitem> | |
320 | </varlistentry> | |
321 | <varlistentry> | |
322 | <term><constant>GL_AUTO_NORMAL</constant></term> | |
323 | <listitem> | |
324 | <para> | |
325 | </para> | |
326 | <para> | |
327 | <parameter>params</parameter> returns a single boolean value indicating whether 2D map evaluation | |
328 | automatically generates surface normals. The initial value is <constant>GL_FALSE</constant>. | |
329 | See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>. | |
330 | </para> | |
331 | </listitem> | |
332 | </varlistentry> | |
333 | <varlistentry> | |
334 | <term><constant>GL_AUX_BUFFERS</constant></term> | |
335 | <listitem> | |
336 | <para> | |
337 | </para> | |
338 | <para> | |
339 | <parameter>params</parameter> returns one value, | |
340 | the number of auxiliary color buffers available. | |
341 | </para> | |
342 | </listitem> | |
343 | </varlistentry> | |
344 | <varlistentry> | |
345 | <term><constant>GL_BLEND</constant></term> | |
346 | <listitem> | |
347 | <para> | |
348 | </para> | |
349 | <para> | |
350 | <parameter>params</parameter> returns a single boolean value indicating whether blending is | |
351 | enabled. The initial value is <constant>GL_FALSE</constant>. | |
352 | See <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry>. | |
353 | </para> | |
354 | </listitem> | |
355 | </varlistentry> | |
356 | <varlistentry> | |
357 | <term><constant>GL_BLEND_COLOR</constant></term> | |
358 | <listitem> | |
359 | <para> | |
360 | </para> | |
361 | <para> | |
362 | <parameter>params</parameter> returns four values, | |
363 | the red, green, blue, and alpha values which are the components of | |
364 | the blend color. | |
365 | See <citerefentry><refentrytitle>glBlendColor</refentrytitle></citerefentry>. | |
366 | </para> | |
367 | </listitem> | |
368 | </varlistentry> | |
369 | <varlistentry> | |
370 | <term><constant>GL_BLEND_DST_ALPHA</constant></term> | |
371 | <listitem> | |
372 | <para> | |
373 | </para> | |
374 | <para> | |
375 | <parameter>params</parameter> returns one value, | |
376 | the symbolic constant identifying the alpha destination blend | |
377 | function. The initial value is <constant>GL_ZERO</constant>. | |
378 | See <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glBlendFuncSeparate</refentrytitle></citerefentry>. | |
379 | </para> | |
380 | </listitem> | |
381 | </varlistentry> | |
382 | <varlistentry> | |
383 | <term><constant>GL_BLEND_DST_RGB</constant></term> | |
384 | <listitem> | |
385 | <para> | |
386 | </para> | |
387 | <para> | |
388 | <parameter>params</parameter> returns one value, | |
389 | the symbolic constant identifying the RGB destination blend | |
390 | function. The initial value is <constant>GL_ZERO</constant>. | |
391 | See <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glBlendFuncSeparate</refentrytitle></citerefentry>. | |
392 | </para> | |
393 | </listitem> | |
394 | </varlistentry> | |
395 | <varlistentry> | |
396 | <term><constant>GL_BLEND_EQUATION_RGB</constant></term> | |
397 | <listitem> | |
398 | <para> | |
399 | </para> | |
400 | <para> | |
401 | <parameter>params</parameter> returns one value, a symbolic constant indicating whether | |
402 | the RGB blend equation is <constant>GL_FUNC_ADD</constant>, <constant>GL_FUNC_SUBTRACT</constant>, | |
403 | <constant>GL_FUNC_REVERSE_SUBTRACT</constant>, <constant>GL_MIN</constant> or <constant>GL_MAX</constant>. | |
404 | See <citerefentry><refentrytitle>glBlendEquationSeparate</refentrytitle></citerefentry>. | |
405 | </para> | |
406 | </listitem> | |
407 | </varlistentry> | |
408 | <varlistentry> | |
409 | <term><constant>GL_BLEND_EQUATION_ALPHA</constant></term> | |
410 | <listitem> | |
411 | <para> | |
412 | </para> | |
413 | <para> | |
414 | <parameter>params</parameter> returns one value, a symbolic constant indicating whether | |
415 | the Alpha blend equation is <constant>GL_FUNC_ADD</constant>, <constant>GL_FUNC_SUBTRACT</constant>, | |
416 | <constant>GL_FUNC_REVERSE_SUBTRACT</constant>, <constant>GL_MIN</constant> or <constant>GL_MAX</constant>. | |
417 | See <citerefentry><refentrytitle>glBlendEquationSeparate</refentrytitle></citerefentry>. | |
418 | </para> | |
419 | </listitem> | |
420 | </varlistentry> | |
421 | <varlistentry> | |
422 | <term><constant>GL_BLEND_SRC_ALPHA</constant></term> | |
423 | <listitem> | |
424 | <para> | |
425 | </para> | |
426 | <para> | |
427 | <parameter>params</parameter> returns one value, | |
428 | the symbolic constant identifying the alpha source blend function. The initial | |
429 | value is <constant>GL_ONE</constant>. | |
430 | See <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glBlendFuncSeparate</refentrytitle></citerefentry>. | |
431 | </para> | |
432 | </listitem> | |
433 | </varlistentry> | |
434 | <varlistentry> | |
435 | <term><constant>GL_BLEND_SRC_RGB</constant></term> | |
436 | <listitem> | |
437 | <para> | |
438 | </para> | |
439 | <para> | |
440 | <parameter>params</parameter> returns one value, | |
441 | the symbolic constant identifying the RGB source blend function. The initial | |
442 | value is <constant>GL_ONE</constant>. | |
443 | See <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glBlendFuncSeparate</refentrytitle></citerefentry>. | |
444 | </para> | |
445 | </listitem> | |
446 | </varlistentry> | |
447 | <varlistentry> | |
448 | <term><constant>GL_BLUE_BIAS</constant></term> | |
449 | <listitem> | |
450 | <para> | |
451 | </para> | |
452 | <para> | |
453 | <parameter>params</parameter> returns one value, | |
454 | the blue bias factor used during pixel transfers. The initial value is 0. | |
455 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
456 | </para> | |
457 | </listitem> | |
458 | </varlistentry> | |
459 | <varlistentry> | |
460 | <term><constant>GL_BLUE_BITS</constant></term> | |
461 | <listitem> | |
462 | <para> | |
463 | </para> | |
464 | <para> | |
465 | <parameter>params</parameter> returns one value, | |
466 | the number of blue bitplanes in each color buffer. | |
467 | </para> | |
468 | </listitem> | |
469 | </varlistentry> | |
470 | <varlistentry> | |
471 | <term><constant>GL_BLUE_SCALE</constant></term> | |
472 | <listitem> | |
473 | <para> | |
474 | </para> | |
475 | <para> | |
476 | <parameter>params</parameter> returns one value, | |
477 | the blue scale factor used during pixel transfers. The initial value is 1. | |
478 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
479 | </para> | |
480 | </listitem> | |
481 | </varlistentry> | |
482 | <varlistentry> | |
483 | <term><constant>GL_CLIENT_ACTIVE_TEXTURE</constant></term> | |
484 | <listitem> | |
485 | <para> | |
486 | </para> | |
487 | <para> | |
488 | <parameter>params</parameter> returns a single integer value indicating the current client active | |
489 | multitexture unit. The initial value is <constant>GL_TEXTURE0</constant>. | |
490 | See <citerefentry><refentrytitle>glClientActiveTexture</refentrytitle></citerefentry>. | |
491 | </para> | |
492 | </listitem> | |
493 | </varlistentry> | |
494 | <varlistentry> | |
495 | <term><constant>GL_CLIENT_ATTRIB_STACK_DEPTH</constant></term> | |
496 | <listitem> | |
497 | <para> | |
498 | </para> | |
499 | <para> | |
500 | <parameter>params</parameter> returns one value indicating the depth of the | |
501 | attribute stack. The initial value is 0. | |
502 | See <citerefentry><refentrytitle>glPushClientAttrib</refentrytitle></citerefentry>. | |
503 | </para> | |
504 | </listitem> | |
505 | </varlistentry> | |
506 | <varlistentry> | |
507 | <term><constant>GL_CLIP_PLANE</constant><emphasis>i</emphasis></term> | |
508 | <listitem> | |
509 | <para> | |
510 | </para> | |
511 | <para> | |
512 | <parameter>params</parameter> returns a single boolean value indicating whether the specified | |
513 | clipping plane is enabled. The initial value is <constant>GL_FALSE</constant>. | |
514 | See <citerefentry><refentrytitle>glClipPlane</refentrytitle></citerefentry>. | |
515 | </para> | |
516 | </listitem> | |
517 | </varlistentry> | |
518 | <varlistentry> | |
519 | <term><constant>GL_COLOR_ARRAY</constant></term> | |
520 | <listitem> | |
521 | <para> | |
522 | </para> | |
523 | <para> | |
524 | <parameter>params</parameter> returns a single boolean value indicating whether the color array is enabled. The initial value is <constant>GL_FALSE</constant>. | |
525 | See <citerefentry><refentrytitle>glColorPointer</refentrytitle></citerefentry>. | |
526 | </para> | |
527 | </listitem> | |
528 | </varlistentry> | |
529 | <varlistentry> | |
530 | <term><constant>GL_COLOR_ARRAY_BUFFER_BINDING</constant></term> | |
531 | <listitem> | |
532 | <para> | |
533 | </para> | |
534 | <para> | |
535 | <parameter>params</parameter> returns a single value, the name of the buffer object | |
536 | associated with the color array. This buffer object would have been bound to the | |
537 | target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to | |
538 | <citerefentry><refentrytitle>glColorPointer</refentrytitle></citerefentry>. | |
539 | If no buffer object was bound to this target, 0 is returned. The initial value is 0. | |
540 | See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>. | |
541 | </para> | |
542 | </listitem> | |
543 | </varlistentry> | |
544 | <varlistentry> | |
545 | <term><constant>GL_COLOR_ARRAY_SIZE</constant></term> | |
546 | <listitem> | |
547 | <para> | |
548 | </para> | |
549 | <para> | |
550 | <parameter>params</parameter> returns one value, | |
551 | the number of components per color in the color array. The initial value | |
552 | is 4. | |
553 | See <citerefentry><refentrytitle>glColorPointer</refentrytitle></citerefentry>. | |
554 | </para> | |
555 | </listitem> | |
556 | </varlistentry> | |
557 | <varlistentry> | |
558 | <term><constant>GL_COLOR_ARRAY_STRIDE</constant></term> | |
559 | <listitem> | |
560 | <para> | |
561 | </para> | |
562 | <para> | |
563 | <parameter>params</parameter> returns one value, | |
564 | the byte offset between consecutive colors in the color array. The initial | |
565 | value is 0. | |
566 | See <citerefentry><refentrytitle>glColorPointer</refentrytitle></citerefentry>. | |
567 | </para> | |
568 | </listitem> | |
569 | </varlistentry> | |
570 | <varlistentry> | |
571 | <term><constant>GL_COLOR_ARRAY_TYPE</constant></term> | |
572 | <listitem> | |
573 | <para> | |
574 | </para> | |
575 | <para> | |
576 | <parameter>params</parameter> returns one value, | |
577 | the data type of each component in the color array. The initial value | |
578 | is <constant>GL_FLOAT</constant>. | |
579 | See <citerefentry><refentrytitle>glColorPointer</refentrytitle></citerefentry>. | |
580 | </para> | |
581 | </listitem> | |
582 | </varlistentry> | |
583 | <varlistentry> | |
584 | <term><constant>GL_COLOR_CLEAR_VALUE</constant></term> | |
585 | <listitem> | |
586 | <para> | |
587 | </para> | |
588 | <para> | |
589 | <parameter>params</parameter> returns four values: | |
590 | the red, green, blue, and alpha values used to clear the color buffers. | |
591 | Integer values, | |
592 | if requested, | |
593 | are linearly mapped from the internal floating-point representation such | |
594 | that 1.0 returns the most positive representable integer value, | |
595 | and | |
596 | <inlineequation><mml:math> | |
597 | <!-- eqn: -1.0:--> | |
598 | <mml:mn>-1.0</mml:mn> | |
599 | </mml:math></inlineequation> | |
600 | returns the most negative representable integer | |
601 | value. The initial value is (0, 0, 0, 0). | |
602 | See <citerefentry><refentrytitle>glClearColor</refentrytitle></citerefentry>. | |
603 | </para> | |
604 | </listitem> | |
605 | </varlistentry> | |
606 | <varlistentry> | |
607 | <term><constant>GL_COLOR_LOGIC_OP</constant></term> | |
608 | <listitem> | |
609 | <para> | |
610 | </para> | |
611 | <para> | |
612 | <parameter>params</parameter> returns a single boolean value indicating whether a fragment's | |
613 | RGBA color values are merged into the framebuffer using a logical | |
614 | operation. The initial value is <constant>GL_FALSE</constant>. | |
615 | See <citerefentry><refentrytitle>glLogicOp</refentrytitle></citerefentry>. | |
616 | </para> | |
617 | </listitem> | |
618 | </varlistentry> | |
619 | <varlistentry> | |
620 | <term><constant>GL_COLOR_MATERIAL</constant></term> | |
621 | <listitem> | |
622 | <para> | |
623 | </para> | |
624 | <para> | |
625 | <parameter>params</parameter> returns a single boolean value indicating whether one or more | |
626 | material parameters are tracking the current color. The initial value | |
627 | is <constant>GL_FALSE</constant>. | |
628 | See <citerefentry><refentrytitle>glColorMaterial</refentrytitle></citerefentry>. | |
629 | </para> | |
630 | </listitem> | |
631 | </varlistentry> | |
632 | <varlistentry> | |
633 | <term><constant>GL_COLOR_MATERIAL_FACE</constant></term> | |
634 | <listitem> | |
635 | <para> | |
636 | </para> | |
637 | <para> | |
638 | <parameter>params</parameter> returns one value, | |
639 | a symbolic constant indicating which materials have a parameter that is | |
640 | tracking the current color. The initial value is <constant>GL_FRONT_AND_BACK</constant>. | |
641 | See <citerefentry><refentrytitle>glColorMaterial</refentrytitle></citerefentry>. | |
642 | </para> | |
643 | </listitem> | |
644 | </varlistentry> | |
645 | <varlistentry> | |
646 | <term><constant>GL_COLOR_MATERIAL_PARAMETER</constant></term> | |
647 | <listitem> | |
648 | <para> | |
649 | </para> | |
650 | <para> | |
651 | <parameter>params</parameter> returns one value, | |
652 | a symbolic constant indicating which material parameters are | |
653 | tracking the current color. The initial value is | |
654 | <constant>GL_AMBIENT_AND_DIFFUSE</constant>. | |
655 | See <citerefentry><refentrytitle>glColorMaterial</refentrytitle></citerefentry>. | |
656 | </para> | |
657 | </listitem> | |
658 | </varlistentry> | |
659 | <varlistentry> | |
660 | <term><constant>GL_COLOR_MATRIX</constant></term> | |
661 | <listitem> | |
662 | <para> | |
663 | </para> | |
664 | <para> | |
665 | <parameter>params</parameter> returns sixteen values: | |
666 | the color matrix on the top of the color matrix stack. Initially | |
667 | this matrix is the identity matrix. | |
668 | See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>. | |
669 | </para> | |
670 | </listitem> | |
671 | </varlistentry> | |
672 | <varlistentry> | |
673 | <term><constant>GL_COLOR_MATRIX_STACK_DEPTH</constant></term> | |
674 | <listitem> | |
675 | <para> | |
676 | </para> | |
677 | <para> | |
678 | <parameter>params</parameter> returns one value, | |
679 | the maximum supported depth of the projection matrix stack. The value must | |
680 | be at least 2. | |
681 | See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>. | |
682 | </para> | |
683 | </listitem> | |
684 | </varlistentry> | |
685 | <varlistentry> | |
686 | <term><constant>GL_COLOR_SUM</constant></term> | |
687 | <listitem> | |
688 | <para> | |
689 | </para> | |
690 | <para> | |
691 | <parameter>params</parameter> returns a single boolean value indicating whether primary and | |
692 | secondary color sum is enabled. | |
693 | See <citerefentry><refentrytitle>glSecondaryColor</refentrytitle></citerefentry>. | |
694 | </para> | |
695 | </listitem> | |
696 | </varlistentry> | |
697 | <varlistentry> | |
698 | <term><constant>GL_COLOR_TABLE</constant></term> | |
699 | <listitem> | |
700 | <para> | |
701 | </para> | |
702 | <para> | |
703 | <parameter>params</parameter> returns a single boolean value indicating whether the color table | |
704 | lookup is enabled. | |
705 | See <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>. | |
706 | </para> | |
707 | </listitem> | |
708 | </varlistentry> | |
709 | <varlistentry> | |
710 | <term><constant>GL_COLOR_WRITEMASK</constant></term> | |
711 | <listitem> | |
712 | <para> | |
713 | </para> | |
714 | <para> | |
715 | <parameter>params</parameter> returns four boolean values: | |
716 | the red, green, blue, and alpha write enables for the color | |
717 | buffers. The initial value is (<constant>GL_TRUE</constant>, <constant>GL_TRUE</constant>, | |
718 | <constant>GL_TRUE</constant>, <constant>GL_TRUE</constant>). | |
719 | See <citerefentry><refentrytitle>glColorMask</refentrytitle></citerefentry>. | |
720 | </para> | |
721 | </listitem> | |
722 | </varlistentry> | |
723 | <varlistentry> | |
724 | <term><constant>GL_COMPRESSED_TEXTURE_FORMATS</constant></term> | |
725 | <listitem> | |
726 | <para> | |
727 | </para> | |
728 | <para> | |
729 | <parameter>params</parameter> returns a list of symbolic | |
730 | constants of length <constant>GL_NUM_COMPRESSED_TEXTURE_FORMATS</constant> | |
731 | indicating which compressed texture formats are available. | |
732 | See <citerefentry><refentrytitle>glCompressedTexImage2D</refentrytitle></citerefentry>. | |
733 | </para> | |
734 | </listitem> | |
735 | </varlistentry> | |
736 | <varlistentry> | |
737 | <term><constant>GL_CONVOLUTION_1D</constant></term> | |
738 | <listitem> | |
739 | <para> | |
740 | </para> | |
741 | <para> | |
742 | <parameter>params</parameter> returns a single boolean value indicating whether 1D convolution | |
743 | is enabled. The initial value is <constant>GL_FALSE</constant>. | |
744 | See <citerefentry><refentrytitle>glConvolutionFilter1D</refentrytitle></citerefentry>. | |
745 | </para> | |
746 | </listitem> | |
747 | </varlistentry> | |
748 | <varlistentry> | |
749 | <term><constant>GL_CONVOLUTION_2D</constant></term> | |
750 | <listitem> | |
751 | <para> | |
752 | </para> | |
753 | <para> | |
754 | <parameter>params</parameter> returns a single boolean value indicating whether 2D convolution | |
755 | is enabled. The initial value is <constant>GL_FALSE</constant>. | |
756 | See <citerefentry><refentrytitle>glConvolutionFilter2D</refentrytitle></citerefentry>. | |
757 | </para> | |
758 | </listitem> | |
759 | </varlistentry> | |
760 | <varlistentry> | |
761 | <term><constant>GL_CULL_FACE</constant></term> | |
762 | <listitem> | |
763 | <para> | |
764 | </para> | |
765 | <para> | |
766 | <parameter>params</parameter> returns a single boolean value indicating whether polygon culling | |
767 | is enabled. The initial value is <constant>GL_FALSE</constant>. | |
768 | See <citerefentry><refentrytitle>glCullFace</refentrytitle></citerefentry>. | |
769 | </para> | |
770 | </listitem> | |
771 | </varlistentry> | |
772 | <varlistentry> | |
773 | <term><constant>GL_CULL_FACE_MODE</constant></term> | |
774 | <listitem> | |
775 | <para> | |
776 | </para> | |
777 | <para> | |
778 | <parameter>params</parameter> returns one value, | |
779 | a symbolic constant indicating which polygon faces are to be | |
780 | culled. The initial value is <constant>GL_BACK</constant>. | |
781 | See <citerefentry><refentrytitle>glCullFace</refentrytitle></citerefentry>. | |
782 | </para> | |
783 | </listitem> | |
784 | </varlistentry> | |
785 | <varlistentry> | |
786 | <term><constant>GL_CURRENT_COLOR</constant></term> | |
787 | <listitem> | |
788 | <para> | |
789 | </para> | |
790 | <para> | |
791 | <parameter>params</parameter> returns four values: | |
792 | the red, green, blue, and alpha values of the current color. | |
793 | Integer values, | |
794 | if requested, | |
795 | are linearly mapped from the internal floating-point representation such | |
796 | that 1.0 returns the most positive representable integer value, | |
797 | and | |
798 | <inlineequation><mml:math> | |
799 | <!-- eqn: -1.0:--> | |
800 | <mml:mn>-1.0</mml:mn> | |
801 | </mml:math></inlineequation> | |
802 | returns the most negative representable integer value. | |
803 | The initial value is (1, 1, 1, 1). | |
804 | See <citerefentry><refentrytitle>glColor</refentrytitle></citerefentry>. | |
805 | </para> | |
806 | </listitem> | |
807 | </varlistentry> | |
808 | <varlistentry> | |
809 | <term><constant>GL_CURRENT_FOG_COORD</constant></term> | |
810 | <listitem> | |
811 | <para> | |
812 | </para> | |
813 | <para> | |
814 | <parameter>params</parameter> returns one value, the current fog coordinate. The initial value | |
815 | is 0. | |
816 | See <citerefentry><refentrytitle>glFogCoord</refentrytitle></citerefentry>. | |
817 | </para> | |
818 | </listitem> | |
819 | </varlistentry> | |
820 | <varlistentry> | |
821 | <term><constant>GL_CURRENT_INDEX</constant></term> | |
822 | <listitem> | |
823 | <para> | |
824 | </para> | |
825 | <para> | |
826 | <parameter>params</parameter> returns one value, | |
827 | the current color index. The initial value is 1. | |
828 | See <citerefentry><refentrytitle>glIndex</refentrytitle></citerefentry>. | |
829 | </para> | |
830 | </listitem> | |
831 | </varlistentry> | |
832 | <varlistentry> | |
833 | <term><constant>GL_CURRENT_NORMAL</constant></term> | |
834 | <listitem> | |
835 | <para> | |
836 | </para> | |
837 | <para> | |
838 | <parameter>params</parameter> returns three values: | |
839 | the <emphasis>x</emphasis>, <emphasis>y</emphasis>, and <emphasis>z</emphasis> values of the current normal. | |
840 | Integer values, | |
841 | if requested, | |
842 | are linearly mapped from the internal floating-point representation such | |
843 | that 1.0 returns the most positive representable integer value, | |
844 | and | |
845 | <inlineequation><mml:math> | |
846 | <!-- eqn: -1.0:--> | |
847 | <mml:mn>-1.0</mml:mn> | |
848 | </mml:math></inlineequation> | |
849 | returns the most negative representable integer value. | |
850 | The initial value is (0, 0, 1). | |
851 | See <citerefentry><refentrytitle>glNormal</refentrytitle></citerefentry>. | |
852 | </para> | |
853 | </listitem> | |
854 | </varlistentry> | |
855 | <varlistentry> | |
856 | <term><constant>GL_CURRENT_PROGRAM</constant></term> | |
857 | <listitem> | |
858 | <para> | |
859 | </para> | |
860 | <para> | |
861 | <parameter>params</parameter> returns one value, | |
862 | the name of the program object that is currently active, or 0 if no program object is active. | |
863 | See <citerefentry><refentrytitle>glUseProgram</refentrytitle></citerefentry>. | |
864 | </para> | |
865 | </listitem> | |
866 | </varlistentry> | |
867 | <varlistentry> | |
868 | <term><constant>GL_CURRENT_RASTER_COLOR</constant></term> | |
869 | <listitem> | |
870 | <para> | |
871 | </para> | |
872 | <para> | |
873 | <parameter>params</parameter> returns four values: | |
874 | the red, green, blue, and alpha color values of the current raster position. | |
875 | Integer values, | |
876 | if requested, | |
877 | are linearly mapped from the internal floating-point representation such | |
878 | that 1.0 returns the most positive representable integer value, | |
879 | and | |
880 | <inlineequation><mml:math> | |
881 | <!-- eqn: -1.0:--> | |
882 | <mml:mn>-1.0</mml:mn> | |
883 | </mml:math></inlineequation> | |
884 | returns the most negative representable integer | |
885 | value. The initial value is (1, 1, 1, 1). | |
886 | See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>. | |
887 | </para> | |
888 | </listitem> | |
889 | </varlistentry> | |
890 | <varlistentry> | |
891 | <term><constant>GL_CURRENT_RASTER_DISTANCE</constant></term> | |
892 | <listitem> | |
893 | <para> | |
894 | </para> | |
895 | <para> | |
896 | <parameter>params</parameter> returns one value, the distance from the eye to the current | |
897 | raster position. The initial value is 0. | |
898 | See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>. | |
899 | </para> | |
900 | </listitem> | |
901 | </varlistentry> | |
902 | <varlistentry> | |
903 | <term><constant>GL_CURRENT_RASTER_INDEX</constant></term> | |
904 | <listitem> | |
905 | <para> | |
906 | </para> | |
907 | <para> | |
908 | <parameter>params</parameter> returns one value, | |
909 | the color index of the current raster position. The initial value is 1. | |
910 | See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>. | |
911 | </para> | |
912 | </listitem> | |
913 | </varlistentry> | |
914 | <varlistentry> | |
915 | <term><constant>GL_CURRENT_RASTER_POSITION</constant></term> | |
916 | <listitem> | |
917 | <para> | |
918 | </para> | |
919 | <para> | |
920 | <parameter>params</parameter> returns four values: | |
921 | the <emphasis>x</emphasis>, <emphasis>y</emphasis>, <emphasis>z</emphasis>, and <emphasis>w</emphasis> components of the current | |
922 | raster position. | |
923 | <emphasis>x</emphasis>, <emphasis>y</emphasis>, and <emphasis>z</emphasis> are in window coordinates, | |
924 | and <emphasis>w</emphasis> is in clip coordinates. The initial value is (0, 0, 0, 1). | |
925 | See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>. | |
926 | </para> | |
927 | </listitem> | |
928 | </varlistentry> | |
929 | <varlistentry> | |
930 | <term><constant>GL_CURRENT_RASTER_POSITION_VALID</constant></term> | |
931 | <listitem> | |
932 | <para> | |
933 | </para> | |
934 | <para> | |
935 | <parameter>params</parameter> returns a single boolean value indicating whether the current | |
936 | raster position is valid. The initial value is <constant>GL_TRUE</constant>. | |
937 | See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>. | |
938 | </para> | |
939 | </listitem> | |
940 | </varlistentry> | |
941 | <varlistentry> | |
942 | <term><constant>GL_CURRENT_RASTER_SECONDARY_COLOR</constant></term> | |
943 | <listitem> | |
944 | <para> | |
945 | </para> | |
946 | <para> | |
947 | <parameter>params</parameter> returns four values: | |
948 | the red, green, blue, and alpha secondary color values of the current raster position. | |
949 | Integer values, | |
950 | if requested, | |
951 | are linearly mapped from the internal floating-point representation such | |
952 | that 1.0 returns the most positive representable integer value, | |
953 | and | |
954 | <inlineequation><mml:math> | |
955 | <!-- eqn: -1.0:--> | |
956 | <mml:mn>-1.0</mml:mn> | |
957 | </mml:math></inlineequation> | |
958 | returns the most negative representable integer | |
959 | value. The initial value is (1, 1, 1, 1). | |
960 | See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>. | |
961 | </para> | |
962 | </listitem> | |
963 | </varlistentry> | |
964 | <varlistentry> | |
965 | <term><constant>GL_CURRENT_RASTER_TEXTURE_COORDS</constant></term> | |
966 | <listitem> | |
967 | <para> | |
968 | </para> | |
969 | <para> | |
970 | <parameter>params</parameter> returns four values: the <emphasis>s</emphasis>, <emphasis>t</emphasis>, <emphasis>r</emphasis>, and <emphasis>q</emphasis> | |
971 | texture coordinates of the current raster position. The initial value is (0, 0, 0, 1). | |
972 | See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glMultiTexCoord</refentrytitle></citerefentry>. | |
973 | </para> | |
974 | </listitem> | |
975 | </varlistentry> | |
976 | <varlistentry> | |
977 | <term><constant>GL_CURRENT_SECONDARY_COLOR</constant></term> | |
978 | <listitem> | |
979 | <para> | |
980 | </para> | |
981 | <para> | |
982 | <parameter>params</parameter> returns four values: the red, green, blue, and alpha values of the | |
983 | current secondary color. Integer values, if requested, are linearly mapped | |
984 | from the internal floating-point representation such that 1.0 returns the | |
985 | most positive representable integer value, and | |
986 | <inlineequation><mml:math> | |
987 | <!-- eqn: -1.0:--> | |
988 | <mml:mn>-1.0</mml:mn> | |
989 | </mml:math></inlineequation> | |
990 | returns the most | |
991 | negative representable integer value. The initial value is (0, 0, 0, 0). | |
992 | See <citerefentry><refentrytitle>glSecondaryColor</refentrytitle></citerefentry>. | |
993 | </para> | |
994 | </listitem> | |
995 | </varlistentry> | |
996 | <varlistentry> | |
997 | <term><constant>GL_CURRENT_TEXTURE_COORDS</constant></term> | |
998 | <listitem> | |
999 | <para> | |
1000 | </para> | |
1001 | <para> | |
1002 | <parameter>params</parameter> returns four values: | |
1003 | the <emphasis>s</emphasis>, <emphasis>t</emphasis>, <emphasis>r</emphasis>, and <emphasis>q</emphasis> current texture | |
1004 | coordinates. The initial value is (0, 0, 0, 1). | |
1005 | See <citerefentry><refentrytitle>glMultiTexCoord</refentrytitle></citerefentry>. | |
1006 | </para> | |
1007 | </listitem> | |
1008 | </varlistentry> | |
1009 | <varlistentry> | |
1010 | <term><constant>GL_DEPTH_BIAS</constant></term> | |
1011 | <listitem> | |
1012 | <para> | |
1013 | </para> | |
1014 | <para> | |
1015 | <parameter>params</parameter> returns one value, | |
1016 | the depth bias factor used during pixel transfers. The initial value is 0. | |
1017 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
1018 | </para> | |
1019 | </listitem> | |
1020 | </varlistentry> | |
1021 | <varlistentry> | |
1022 | <term><constant>GL_DEPTH_BITS</constant></term> | |
1023 | <listitem> | |
1024 | <para> | |
1025 | </para> | |
1026 | <para> | |
1027 | <parameter>params</parameter> returns one value, | |
1028 | the number of bitplanes in the depth buffer. | |
1029 | </para> | |
1030 | </listitem> | |
1031 | </varlistentry> | |
1032 | <varlistentry> | |
1033 | <term><constant>GL_DEPTH_CLEAR_VALUE</constant></term> | |
1034 | <listitem> | |
1035 | <para> | |
1036 | </para> | |
1037 | <para> | |
1038 | <parameter>params</parameter> returns one value, | |
1039 | the value that is used to clear the depth buffer. | |
1040 | Integer values, | |
1041 | if requested, | |
1042 | are linearly mapped from the internal floating-point representation such | |
1043 | that 1.0 returns the most positive representable integer value, | |
1044 | and | |
1045 | <inlineequation><mml:math> | |
1046 | <!-- eqn: -1.0:--> | |
1047 | <mml:mn>-1.0</mml:mn> | |
1048 | </mml:math></inlineequation> | |
1049 | returns the most negative representable integer | |
1050 | value. The initial value is 1. | |
1051 | See <citerefentry><refentrytitle>glClearDepth</refentrytitle></citerefentry>. | |
1052 | </para> | |
1053 | </listitem> | |
1054 | </varlistentry> | |
1055 | <varlistentry> | |
1056 | <term><constant>GL_DEPTH_FUNC</constant></term> | |
1057 | <listitem> | |
1058 | <para> | |
1059 | </para> | |
1060 | <para> | |
1061 | <parameter>params</parameter> returns one value, | |
1062 | the symbolic constant that indicates the depth comparison | |
1063 | function. The initial value is <constant>GL_LESS</constant>. | |
1064 | See <citerefentry><refentrytitle>glDepthFunc</refentrytitle></citerefentry>. | |
1065 | </para> | |
1066 | </listitem> | |
1067 | </varlistentry> | |
1068 | <varlistentry> | |
1069 | <term><constant>GL_DEPTH_RANGE</constant></term> | |
1070 | <listitem> | |
1071 | <para> | |
1072 | </para> | |
1073 | <para> | |
1074 | <parameter>params</parameter> returns two values: | |
1075 | the near and far mapping limits for the depth buffer. | |
1076 | Integer values, | |
1077 | if requested, | |
1078 | are linearly mapped from the internal floating-point representation such | |
1079 | that 1.0 returns the most positive representable integer value, | |
1080 | and | |
1081 | <inlineequation><mml:math> | |
1082 | <!-- eqn: -1.0:--> | |
1083 | <mml:mn>-1.0</mml:mn> | |
1084 | </mml:math></inlineequation> | |
1085 | returns the most negative representable integer | |
1086 | value. The initial value is (0, 1). | |
1087 | See <citerefentry><refentrytitle>glDepthRange</refentrytitle></citerefentry>. | |
1088 | </para> | |
1089 | </listitem> | |
1090 | </varlistentry> | |
1091 | <varlistentry> | |
1092 | <term><constant>GL_DEPTH_SCALE</constant></term> | |
1093 | <listitem> | |
1094 | <para> | |
1095 | </para> | |
1096 | <para> | |
1097 | <parameter>params</parameter> returns one value, | |
1098 | the depth scale factor used during pixel transfers. The initial value is 1. | |
1099 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
1100 | </para> | |
1101 | </listitem> | |
1102 | </varlistentry> | |
1103 | <varlistentry> | |
1104 | <term><constant>GL_DEPTH_TEST</constant></term> | |
1105 | <listitem> | |
1106 | <para> | |
1107 | </para> | |
1108 | <para> | |
1109 | <parameter>params</parameter> returns a single boolean value indicating whether depth testing | |
1110 | of fragments is enabled. The initial value is <constant>GL_FALSE</constant>. | |
1111 | See <citerefentry><refentrytitle>glDepthFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glDepthRange</refentrytitle></citerefentry>. | |
1112 | </para> | |
1113 | </listitem> | |
1114 | </varlistentry> | |
1115 | <varlistentry> | |
1116 | <term><constant>GL_DEPTH_WRITEMASK</constant></term> | |
1117 | <listitem> | |
1118 | <para> | |
1119 | </para> | |
1120 | <para> | |
1121 | <parameter>params</parameter> returns a single boolean value indicating if the depth buffer | |
1122 | is enabled for writing. The initial value is <constant>GL_TRUE</constant>. | |
1123 | See <citerefentry><refentrytitle>glDepthMask</refentrytitle></citerefentry>. | |
1124 | </para> | |
1125 | </listitem> | |
1126 | </varlistentry> | |
1127 | <varlistentry> | |
1128 | <term><constant>GL_DITHER</constant></term> | |
1129 | <listitem> | |
1130 | <para> | |
1131 | </para> | |
1132 | <para> | |
1133 | <parameter>params</parameter> returns a single boolean value indicating whether dithering of | |
1134 | fragment colors and indices is enabled. The initial value is <constant>GL_TRUE</constant>. | |
1135 | </para> | |
1136 | </listitem> | |
1137 | </varlistentry> | |
1138 | <varlistentry> | |
1139 | <term><constant>GL_DOUBLEBUFFER</constant></term> | |
1140 | <listitem> | |
1141 | <para> | |
1142 | </para> | |
1143 | <para> | |
1144 | <parameter>params</parameter> returns a single boolean value indicating whether double buffering | |
1145 | is supported. | |
1146 | </para> | |
1147 | </listitem> | |
1148 | </varlistentry> | |
1149 | <varlistentry> | |
1150 | <term><constant>GL_DRAW_BUFFER</constant></term> | |
1151 | <listitem> | |
1152 | <para> | |
1153 | </para> | |
1154 | <para> | |
1155 | <parameter>params</parameter> returns one value, | |
1156 | a symbolic constant indicating which buffers are being drawn to. | |
1157 | See <citerefentry><refentrytitle>glDrawBuffer</refentrytitle></citerefentry>. The initial value is <constant>GL_BACK</constant> if there | |
1158 | are back buffers, otherwise it is <constant>GL_FRONT</constant>. | |
1159 | </para> | |
1160 | </listitem> | |
1161 | </varlistentry> | |
1162 | <varlistentry> | |
1163 | <term><constant>GL_DRAW_BUFFER</constant><emphasis>i</emphasis></term> | |
1164 | <listitem> | |
1165 | <para> | |
1166 | </para> | |
1167 | <para> | |
1168 | <parameter>params</parameter> returns one value, | |
1169 | a symbolic constant indicating which buffers are being drawn to by the corresponding output color. | |
1170 | See <citerefentry><refentrytitle>glDrawBuffers</refentrytitle></citerefentry>. | |
1171 | The initial value of <constant>GL_DRAW_BUFFER0</constant> is <constant>GL_BACK</constant> if there | |
1172 | are back buffers, otherwise it is <constant>GL_FRONT</constant>. The | |
1173 | initial values of draw buffers for all other output colors is <constant>GL_NONE</constant>. | |
1174 | </para> | |
1175 | </listitem> | |
1176 | </varlistentry> | |
1177 | <varlistentry> | |
1178 | <term><constant>GL_EDGE_FLAG</constant></term> | |
1179 | <listitem> | |
1180 | <para> | |
1181 | </para> | |
1182 | <para> | |
1183 | <parameter>params</parameter> returns a single boolean value indicating whether the current | |
1184 | edge flag is <constant>GL_TRUE</constant> or <constant>GL_FALSE</constant>. The initial value is <constant>GL_TRUE</constant>. | |
1185 | See <citerefentry><refentrytitle>glEdgeFlag</refentrytitle></citerefentry>. | |
1186 | </para> | |
1187 | </listitem> | |
1188 | </varlistentry> | |
1189 | <varlistentry> | |
1190 | <term><constant>GL_EDGE_FLAG_ARRAY</constant></term> | |
1191 | <listitem> | |
1192 | <para> | |
1193 | </para> | |
1194 | <para> | |
1195 | <parameter>params</parameter> returns a single boolean value indicating whether the edge | |
1196 | flag array is enabled. The initial value is <constant>GL_FALSE</constant>. | |
1197 | See <citerefentry><refentrytitle>glEdgeFlagPointer</refentrytitle></citerefentry>. | |
1198 | </para> | |
1199 | </listitem> | |
1200 | </varlistentry> | |
1201 | <varlistentry> | |
1202 | <term><constant>GL_EDGE_FLAG_ARRAY_BUFFER_BINDING</constant></term> | |
1203 | <listitem> | |
1204 | <para> | |
1205 | </para> | |
1206 | <para> | |
1207 | <parameter>params</parameter> returns a single value, the name of the buffer object | |
1208 | associated with the edge flag array. This buffer object would have been bound to the | |
1209 | target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to | |
1210 | <citerefentry><refentrytitle>glEdgeFlagPointer</refentrytitle></citerefentry>. | |
1211 | If no buffer object was bound to this target, 0 is returned. The initial value is 0. | |
1212 | See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>. | |
1213 | </para> | |
1214 | </listitem> | |
1215 | </varlistentry> | |
1216 | <varlistentry> | |
1217 | <term><constant>GL_EDGE_FLAG_ARRAY_STRIDE</constant></term> | |
1218 | <listitem> | |
1219 | <para> | |
1220 | </para> | |
1221 | <para> | |
1222 | <parameter>params</parameter> returns one value, | |
1223 | the byte offset between consecutive edge flags in the edge flag | |
1224 | array. The initial value is 0. | |
1225 | See <citerefentry><refentrytitle>glEdgeFlagPointer</refentrytitle></citerefentry>. | |
1226 | </para> | |
1227 | </listitem> | |
1228 | </varlistentry> | |
1229 | <varlistentry> | |
1230 | <term><constant>GL_ELEMENT_ARRAY_BUFFER_BINDING</constant></term> | |
1231 | <listitem> | |
1232 | <para> | |
1233 | </para> | |
1234 | <para> | |
1235 | <parameter>params</parameter> returns a single value, the name of the buffer object | |
1236 | currently bound to the target <constant>GL_ELEMENT_ARRAY_BUFFER</constant>. If no buffer object | |
1237 | is bound to this target, 0 is returned. The initial value is 0. | |
1238 | See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>. | |
1239 | </para> | |
1240 | </listitem> | |
1241 | </varlistentry> | |
1242 | <varlistentry> | |
1243 | <term><constant>GL_FEEDBACK_BUFFER_SIZE</constant></term> | |
1244 | <listitem> | |
1245 | <para> | |
1246 | </para> | |
1247 | <para> | |
1248 | <parameter>params</parameter> returns one value, the size of the feedback buffer. | |
1249 | See <citerefentry><refentrytitle>glFeedbackBuffer</refentrytitle></citerefentry>. | |
1250 | </para> | |
1251 | </listitem> | |
1252 | </varlistentry> | |
1253 | <varlistentry> | |
1254 | <term><constant>GL_FEEDBACK_BUFFER_TYPE</constant></term> | |
1255 | <listitem> | |
1256 | <para> | |
1257 | </para> | |
1258 | <para> | |
1259 | <parameter>params</parameter> returns one value, the type of the feedback buffer. | |
1260 | See <citerefentry><refentrytitle>glFeedbackBuffer</refentrytitle></citerefentry>. | |
1261 | </para> | |
1262 | </listitem> | |
1263 | </varlistentry> | |
1264 | <varlistentry> | |
1265 | <term><constant>GL_FOG</constant></term> | |
1266 | <listitem> | |
1267 | <para> | |
1268 | </para> | |
1269 | <para> | |
1270 | <parameter>params</parameter> returns a single boolean value indicating whether fogging is | |
1271 | enabled. The initial value is <constant>GL_FALSE</constant>. | |
1272 | See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>. | |
1273 | </para> | |
1274 | </listitem> | |
1275 | </varlistentry> | |
1276 | <varlistentry> | |
1277 | <term><constant>GL_FOG_COORD_ARRAY</constant></term> | |
1278 | <listitem> | |
1279 | <para> | |
1280 | </para> | |
1281 | <para> | |
1282 | <parameter>params</parameter> returns a single boolean value indicating whether the fog coordinate array is enabled. The initial value is <constant>GL_FALSE</constant>. | |
1283 | See <citerefentry><refentrytitle>glFogCoordPointer</refentrytitle></citerefentry>. | |
1284 | </para> | |
1285 | </listitem> | |
1286 | </varlistentry> | |
1287 | <varlistentry> | |
1288 | <term><constant>GL_FOG_COORD_ARRAY_BUFFER_BINDING</constant></term> | |
1289 | <listitem> | |
1290 | <para> | |
1291 | </para> | |
1292 | <para> | |
1293 | <parameter>params</parameter> returns a single value, the name of the buffer object | |
1294 | associated with the fog coordinate array. This buffer object would have been bound to the | |
1295 | target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to | |
1296 | <citerefentry><refentrytitle>glFogCoordPointer</refentrytitle></citerefentry>. | |
1297 | If no buffer object was bound to this target, 0 is returned. The initial value is 0. | |
1298 | See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>. | |
1299 | </para> | |
1300 | </listitem> | |
1301 | </varlistentry> | |
1302 | <varlistentry> | |
1303 | <term><constant>GL_FOG_COORD_ARRAY_STRIDE</constant></term> | |
1304 | <listitem> | |
1305 | <para> | |
1306 | </para> | |
1307 | <para> | |
1308 | <parameter>params</parameter> returns one value, | |
1309 | the byte offset between consecutive fog coordinates in the fog coordinate | |
1310 | array. The initial value is 0. | |
1311 | See <citerefentry><refentrytitle>glFogCoordPointer</refentrytitle></citerefentry>. | |
1312 | </para> | |
1313 | </listitem> | |
1314 | </varlistentry> | |
1315 | <varlistentry> | |
1316 | <term><constant>GL_FOG_COORD_ARRAY_TYPE</constant></term> | |
1317 | <listitem> | |
1318 | <para> | |
1319 | </para> | |
1320 | <para> | |
1321 | <parameter>params</parameter> returns one value, the type of the fog coordinate array. | |
1322 | The initial value is <constant>GL_FLOAT</constant>. | |
1323 | See <citerefentry><refentrytitle>glFogCoordPointer</refentrytitle></citerefentry>. | |
1324 | </para> | |
1325 | </listitem> | |
1326 | </varlistentry> | |
1327 | <varlistentry> | |
1328 | <term><constant>GL_FOG_COORD_SRC</constant></term> | |
1329 | <listitem> | |
1330 | <para> | |
1331 | </para> | |
1332 | <para> | |
1333 | <parameter>params</parameter> returns one value, a symbolic constant indicating the source of the fog coordinate. | |
1334 | The initial value is <constant>GL_FRAGMENT_DEPTH</constant>. | |
1335 | See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>. | |
1336 | </para> | |
1337 | </listitem> | |
1338 | </varlistentry> | |
1339 | <varlistentry> | |
1340 | <term><constant>GL_FOG_COLOR</constant></term> | |
1341 | <listitem> | |
1342 | <para> | |
1343 | </para> | |
1344 | <para> | |
1345 | <parameter>params</parameter> returns four values: | |
1346 | the red, green, blue, and alpha components of the fog color. | |
1347 | Integer values, | |
1348 | if requested, | |
1349 | are linearly mapped from the internal floating-point representation such | |
1350 | that 1.0 returns the most positive representable integer value, | |
1351 | and | |
1352 | <inlineequation><mml:math> | |
1353 | <!-- eqn: -1.0:--> | |
1354 | <mml:mn>-1.0</mml:mn> | |
1355 | </mml:math></inlineequation> | |
1356 | returns the most negative representable integer | |
1357 | value. The initial value is (0, 0, 0, 0). | |
1358 | See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>. | |
1359 | </para> | |
1360 | </listitem> | |
1361 | </varlistentry> | |
1362 | <varlistentry> | |
1363 | <term><constant>GL_FOG_DENSITY</constant></term> | |
1364 | <listitem> | |
1365 | <para> | |
1366 | </para> | |
1367 | <para> | |
1368 | <parameter>params</parameter> returns one value, | |
1369 | the fog density parameter. The initial value is 1. | |
1370 | See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>. | |
1371 | </para> | |
1372 | </listitem> | |
1373 | </varlistentry> | |
1374 | <varlistentry> | |
1375 | <term><constant>GL_FOG_END</constant></term> | |
1376 | <listitem> | |
1377 | <para> | |
1378 | </para> | |
1379 | <para> | |
1380 | <parameter>params</parameter> returns one value, | |
1381 | the end factor for the linear fog equation. The initial value is 1. | |
1382 | See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>. | |
1383 | </para> | |
1384 | </listitem> | |
1385 | </varlistentry> | |
1386 | <varlistentry> | |
1387 | <term><constant>GL_FOG_HINT</constant></term> | |
1388 | <listitem> | |
1389 | <para> | |
1390 | </para> | |
1391 | <para> | |
1392 | <parameter>params</parameter> returns one value, | |
1393 | a symbolic constant indicating the mode of the fog hint. The initial value | |
1394 | is <constant>GL_DONT_CARE</constant>. | |
1395 | See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>. | |
1396 | </para> | |
1397 | </listitem> | |
1398 | </varlistentry> | |
1399 | <varlistentry> | |
1400 | <term><constant>GL_FOG_INDEX</constant></term> | |
1401 | <listitem> | |
1402 | <para> | |
1403 | </para> | |
1404 | <para> | |
1405 | <parameter>params</parameter> returns one value, | |
1406 | the fog color index. The initial value is 0. | |
1407 | See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>. | |
1408 | </para> | |
1409 | </listitem> | |
1410 | </varlistentry> | |
1411 | <varlistentry> | |
1412 | <term><constant>GL_FOG_MODE</constant></term> | |
1413 | <listitem> | |
1414 | <para> | |
1415 | </para> | |
1416 | <para> | |
1417 | <parameter>params</parameter> returns one value, | |
1418 | a symbolic constant indicating which fog equation is selected. The initial | |
1419 | value is <constant>GL_EXP</constant>. | |
1420 | See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>. | |
1421 | </para> | |
1422 | </listitem> | |
1423 | </varlistentry> | |
1424 | <varlistentry> | |
1425 | <term><constant>GL_FOG_START</constant></term> | |
1426 | <listitem> | |
1427 | <para> | |
1428 | </para> | |
1429 | <para> | |
1430 | <parameter>params</parameter> returns one value, | |
1431 | the start factor for the linear fog equation. The initial value is 0. | |
1432 | See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>. | |
1433 | </para> | |
1434 | </listitem> | |
1435 | </varlistentry> | |
1436 | <varlistentry> | |
1437 | <term><constant>GL_FRAGMENT_SHADER_DERIVATIVE_HINT</constant></term> | |
1438 | <listitem> | |
1439 | <para> | |
1440 | </para> | |
1441 | <para> | |
1442 | <parameter>params</parameter> returns one value, | |
1443 | a symbolic constant indicating the mode of the derivative accuracy hint | |
1444 | for fragment shaders. The initial value | |
1445 | is <constant>GL_DONT_CARE</constant>. | |
1446 | See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>. | |
1447 | </para> | |
1448 | </listitem> | |
1449 | </varlistentry> | |
1450 | <varlistentry> | |
1451 | <term><constant>GL_FRONT_FACE</constant></term> | |
1452 | <listitem> | |
1453 | <para> | |
1454 | </para> | |
1455 | <para> | |
1456 | <parameter>params</parameter> returns one value, | |
1457 | a symbolic constant indicating whether clockwise or counterclockwise | |
1458 | polygon winding is treated as front-facing. The initial value is | |
1459 | <constant>GL_CCW</constant>. | |
1460 | See <citerefentry><refentrytitle>glFrontFace</refentrytitle></citerefentry>. | |
1461 | </para> | |
1462 | </listitem> | |
1463 | </varlistentry> | |
1464 | <varlistentry> | |
1465 | <term><constant>GL_GENERATE_MIPMAP_HINT</constant></term> | |
1466 | <listitem> | |
1467 | <para> | |
1468 | </para> | |
1469 | <para> | |
1470 | <parameter>params</parameter> returns one value, | |
1471 | a symbolic constant indicating the mode of the mipmap generation filtering | |
1472 | hint. The initial value is <constant>GL_DONT_CARE</constant>. | |
1473 | See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>. | |
1474 | </para> | |
1475 | </listitem> | |
1476 | </varlistentry> | |
1477 | <varlistentry> | |
1478 | <term><constant>GL_GREEN_BIAS</constant></term> | |
1479 | <listitem> | |
1480 | <para> | |
1481 | </para> | |
1482 | <para> | |
1483 | <parameter>params</parameter> returns one value, | |
1484 | the green bias factor used during pixel transfers. The initial value is 0. | |
1485 | </para> | |
1486 | </listitem> | |
1487 | </varlistentry> | |
1488 | <varlistentry> | |
1489 | <term><constant>GL_GREEN_BITS</constant></term> | |
1490 | <listitem> | |
1491 | <para> | |
1492 | </para> | |
1493 | <para> | |
1494 | <parameter>params</parameter> returns one value, | |
1495 | the number of green bitplanes in each color buffer. | |
1496 | </para> | |
1497 | </listitem> | |
1498 | </varlistentry> | |
1499 | <varlistentry> | |
1500 | <term><constant>GL_GREEN_SCALE</constant></term> | |
1501 | <listitem> | |
1502 | <para> | |
1503 | </para> | |
1504 | <para> | |
1505 | <parameter>params</parameter> returns one value, | |
1506 | the green scale factor used during pixel transfers. The initial value is 1. | |
1507 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
1508 | </para> | |
1509 | </listitem> | |
1510 | </varlistentry> | |
1511 | <varlistentry> | |
1512 | <term><constant>GL_HISTOGRAM</constant></term> | |
1513 | <listitem> | |
1514 | <para> | |
1515 | </para> | |
1516 | <para> | |
1517 | <parameter>params</parameter> returns a single boolean value indicating whether histogram is | |
1518 | enabled. The initial value is <constant>GL_FALSE</constant>. | |
1519 | See <citerefentry><refentrytitle>glHistogram</refentrytitle></citerefentry>. | |
1520 | </para> | |
1521 | </listitem> | |
1522 | </varlistentry> | |
1523 | <varlistentry> | |
1524 | <term><constant>GL_INDEX_ARRAY</constant></term> | |
1525 | <listitem> | |
1526 | <para> | |
1527 | </para> | |
1528 | <para> | |
1529 | <parameter>params</parameter> returns a single boolean value indicating whether the color | |
1530 | index array is enabled. The initial value is <constant>GL_FALSE</constant>. | |
1531 | See <citerefentry><refentrytitle>glIndexPointer</refentrytitle></citerefentry>. | |
1532 | </para> | |
1533 | </listitem> | |
1534 | </varlistentry> | |
1535 | <varlistentry> | |
1536 | <term><constant>GL_INDEX_ARRAY_BUFFER_BINDING</constant></term> | |
1537 | <listitem> | |
1538 | <para> | |
1539 | </para> | |
1540 | <para> | |
1541 | <parameter>params</parameter> returns a single value, the name of the buffer object | |
1542 | associated with the color index array. This buffer object would have been bound to the | |
1543 | target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to | |
1544 | <citerefentry><refentrytitle>glIndexPointer</refentrytitle></citerefentry>. | |
1545 | If no buffer object was bound to this target, 0 is returned. The initial value is 0. | |
1546 | See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>. | |
1547 | </para> | |
1548 | </listitem> | |
1549 | </varlistentry> | |
1550 | <varlistentry> | |
1551 | <term><constant>GL_INDEX_ARRAY_STRIDE</constant></term> | |
1552 | <listitem> | |
1553 | <para> | |
1554 | </para> | |
1555 | <para> | |
1556 | <parameter>params</parameter> returns one value, | |
1557 | the byte offset between consecutive color indexes in the color index | |
1558 | array. The initial value is 0. | |
1559 | See <citerefentry><refentrytitle>glIndexPointer</refentrytitle></citerefentry>. | |
1560 | </para> | |
1561 | </listitem> | |
1562 | </varlistentry> | |
1563 | <varlistentry> | |
1564 | <term><constant>GL_INDEX_ARRAY_TYPE</constant></term> | |
1565 | <listitem> | |
1566 | <para> | |
1567 | </para> | |
1568 | <para> | |
1569 | <parameter>params</parameter> returns one value, | |
1570 | the data type of indexes in the color index array. The initial value is | |
1571 | <constant>GL_FLOAT</constant>. | |
1572 | See <citerefentry><refentrytitle>glIndexPointer</refentrytitle></citerefentry>. | |
1573 | </para> | |
1574 | </listitem> | |
1575 | </varlistentry> | |
1576 | <varlistentry> | |
1577 | <term><constant>GL_INDEX_BITS</constant></term> | |
1578 | <listitem> | |
1579 | <para> | |
1580 | </para> | |
1581 | <para> | |
1582 | <parameter>params</parameter> returns one value, | |
1583 | the number of bitplanes in each color index buffer. | |
1584 | </para> | |
1585 | </listitem> | |
1586 | </varlistentry> | |
1587 | <varlistentry> | |
1588 | <term><constant>GL_INDEX_CLEAR_VALUE</constant></term> | |
1589 | <listitem> | |
1590 | <para> | |
1591 | </para> | |
1592 | <para> | |
1593 | <parameter>params</parameter> returns one value, | |
1594 | the color index used to clear the color index buffers. The initial value | |
1595 | is 0. | |
1596 | See <citerefentry><refentrytitle>glClearIndex</refentrytitle></citerefentry>. | |
1597 | </para> | |
1598 | </listitem> | |
1599 | </varlistentry> | |
1600 | <varlistentry> | |
1601 | <term><constant>GL_INDEX_LOGIC_OP</constant></term> | |
1602 | <listitem> | |
1603 | <para> | |
1604 | </para> | |
1605 | <para> | |
1606 | <parameter>params</parameter> returns a single boolean value indicating whether a fragment's index | |
1607 | values are merged into the framebuffer using a logical | |
1608 | operation. The initial value is <constant>GL_FALSE</constant>. | |
1609 | See <citerefentry><refentrytitle>glLogicOp</refentrytitle></citerefentry>. | |
1610 | </para> | |
1611 | </listitem> | |
1612 | </varlistentry> | |
1613 | <varlistentry> | |
1614 | <term><constant>GL_INDEX_MODE</constant></term> | |
1615 | <listitem> | |
1616 | <para> | |
1617 | </para> | |
1618 | <para> | |
1619 | <parameter>params</parameter> returns a single boolean value indicating whether the GL is in | |
1620 | color index mode (<constant>GL_TRUE</constant>) or RGBA mode (<constant>GL_FALSE</constant>). | |
1621 | </para> | |
1622 | </listitem> | |
1623 | </varlistentry> | |
1624 | <varlistentry> | |
1625 | <term><constant>GL_INDEX_OFFSET</constant></term> | |
1626 | <listitem> | |
1627 | <para> | |
1628 | </para> | |
1629 | <para> | |
1630 | <parameter>params</parameter> returns one value, | |
1631 | the offset added to color and stencil indices during pixel | |
1632 | transfers. The initial value is 0. | |
1633 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
1634 | </para> | |
1635 | </listitem> | |
1636 | </varlistentry> | |
1637 | <varlistentry> | |
1638 | <term><constant>GL_INDEX_SHIFT</constant></term> | |
1639 | <listitem> | |
1640 | <para> | |
1641 | </para> | |
1642 | <para> | |
1643 | <parameter>params</parameter> returns one value, | |
1644 | the amount that color and stencil indices are shifted during pixel | |
1645 | transfers. The initial value is 0. | |
1646 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
1647 | </para> | |
1648 | </listitem> | |
1649 | </varlistentry> | |
1650 | <varlistentry> | |
1651 | <term><constant>GL_INDEX_WRITEMASK</constant></term> | |
1652 | <listitem> | |
1653 | <para> | |
1654 | </para> | |
1655 | <para> | |
1656 | <parameter>params</parameter> returns one value, | |
1657 | a mask indicating which bitplanes of each color index buffer can be | |
1658 | written. The initial value is all 1's. | |
1659 | See <citerefentry><refentrytitle>glIndexMask</refentrytitle></citerefentry>. | |
1660 | </para> | |
1661 | </listitem> | |
1662 | </varlistentry> | |
1663 | <varlistentry> | |
1664 | <term><constant>GL_LIGHT</constant><emphasis>i</emphasis></term> | |
1665 | <listitem> | |
1666 | <para> | |
1667 | </para> | |
1668 | <para> | |
1669 | <parameter>params</parameter> returns a single boolean value indicating whether the specified | |
1670 | light is enabled. The initial value is <constant>GL_FALSE</constant>. | |
1671 | See <citerefentry><refentrytitle>glLight</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>. | |
1672 | </para> | |
1673 | </listitem> | |
1674 | </varlistentry> | |
1675 | <varlistentry> | |
1676 | <term><constant>GL_LIGHTING</constant></term> | |
1677 | <listitem> | |
1678 | <para> | |
1679 | </para> | |
1680 | <para> | |
1681 | <parameter>params</parameter> returns a single boolean value indicating whether lighting is | |
1682 | enabled. The initial value is <constant>GL_FALSE</constant>. | |
1683 | See <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>. | |
1684 | </para> | |
1685 | </listitem> | |
1686 | </varlistentry> | |
1687 | <varlistentry> | |
1688 | <term><constant>GL_LIGHT_MODEL_AMBIENT</constant></term> | |
1689 | <listitem> | |
1690 | <para> | |
1691 | </para> | |
1692 | <para> | |
1693 | <parameter>params</parameter> returns four values: | |
1694 | the red, green, blue, and alpha components of the ambient intensity of | |
1695 | the entire scene. | |
1696 | Integer values, | |
1697 | if requested, | |
1698 | are linearly mapped from the internal floating-point representation such | |
1699 | that 1.0 returns the most positive representable integer value, | |
1700 | and | |
1701 | <inlineequation><mml:math> | |
1702 | <!-- eqn: -1.0:--> | |
1703 | <mml:mn>-1.0</mml:mn> | |
1704 | </mml:math></inlineequation> | |
1705 | returns the most negative representable integer | |
1706 | value. The initial value is (0.2, 0.2, 0.2, 1.0). | |
1707 | See <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>. | |
1708 | </para> | |
1709 | </listitem> | |
1710 | </varlistentry> | |
1711 | <varlistentry> | |
1712 | <term><constant>GL_LIGHT_MODEL_COLOR_CONTROL</constant></term> | |
1713 | <listitem> | |
1714 | <para> | |
1715 | </para> | |
1716 | <para> | |
1717 | <parameter>params</parameter> returns single enumerated value indicating whether specular | |
1718 | reflection calculations are separated from normal lighting computations. | |
1719 | The initial value is <constant>GL_SINGLE_COLOR</constant>. | |
1720 | </para> | |
1721 | </listitem> | |
1722 | </varlistentry> | |
1723 | <varlistentry> | |
1724 | <term><constant>GL_LIGHT_MODEL_LOCAL_VIEWER</constant></term> | |
1725 | <listitem> | |
1726 | <para> | |
1727 | </para> | |
1728 | <para> | |
1729 | <parameter>params</parameter> returns a single boolean value indicating whether specular reflection | |
1730 | calculations treat the viewer as being local to the scene. The initial | |
1731 | value is <constant>GL_FALSE</constant>. | |
1732 | See <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>. | |
1733 | </para> | |
1734 | </listitem> | |
1735 | </varlistentry> | |
1736 | <varlistentry> | |
1737 | <term><constant>GL_LIGHT_MODEL_TWO_SIDE</constant></term> | |
1738 | <listitem> | |
1739 | <para> | |
1740 | </para> | |
1741 | <para> | |
1742 | <parameter>params</parameter> returns a single boolean value indicating whether separate materials | |
1743 | are used to compute lighting for front- and back-facing | |
1744 | polygons. The initial value is <constant>GL_FALSE</constant>. | |
1745 | See <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>. | |
1746 | </para> | |
1747 | </listitem> | |
1748 | </varlistentry> | |
1749 | <varlistentry> | |
1750 | <term><constant>GL_LINE_SMOOTH</constant></term> | |
1751 | <listitem> | |
1752 | <para> | |
1753 | </para> | |
1754 | <para> | |
1755 | <parameter>params</parameter> returns a single boolean value indicating whether antialiasing of | |
1756 | lines is enabled. The initial value is <constant>GL_FALSE</constant>. | |
1757 | See <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>. | |
1758 | </para> | |
1759 | </listitem> | |
1760 | </varlistentry> | |
1761 | <varlistentry> | |
1762 | <term><constant>GL_LINE_SMOOTH_HINT</constant></term> | |
1763 | <listitem> | |
1764 | <para> | |
1765 | </para> | |
1766 | <para> | |
1767 | <parameter>params</parameter> returns one value, | |
1768 | a symbolic constant indicating the mode of the line antialiasing | |
1769 | hint. The initial value is <constant>GL_DONT_CARE</constant>. | |
1770 | See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>. | |
1771 | </para> | |
1772 | </listitem> | |
1773 | </varlistentry> | |
1774 | <varlistentry> | |
1775 | <term><constant>GL_LINE_STIPPLE</constant></term> | |
1776 | <listitem> | |
1777 | <para> | |
1778 | </para> | |
1779 | <para> | |
1780 | <parameter>params</parameter> returns a single boolean value indicating whether stippling of lines | |
1781 | is enabled. The initial value is <constant>GL_FALSE</constant>. | |
1782 | See <citerefentry><refentrytitle>glLineStipple</refentrytitle></citerefentry>. | |
1783 | </para> | |
1784 | </listitem> | |
1785 | </varlistentry> | |
1786 | <varlistentry> | |
1787 | <term><constant>GL_LINE_STIPPLE_PATTERN</constant></term> | |
1788 | <listitem> | |
1789 | <para> | |
1790 | </para> | |
1791 | <para> | |
1792 | <parameter>params</parameter> returns one value, | |
1793 | the 16-bit line stipple pattern. The initial value is all 1's. | |
1794 | See <citerefentry><refentrytitle>glLineStipple</refentrytitle></citerefentry>. | |
1795 | </para> | |
1796 | </listitem> | |
1797 | </varlistentry> | |
1798 | <varlistentry> | |
1799 | <term><constant>GL_LINE_STIPPLE_REPEAT</constant></term> | |
1800 | <listitem> | |
1801 | <para> | |
1802 | </para> | |
1803 | <para> | |
1804 | <parameter>params</parameter> returns one value, | |
1805 | the line stipple repeat factor. The initial value is 1. | |
1806 | See <citerefentry><refentrytitle>glLineStipple</refentrytitle></citerefentry>. | |
1807 | </para> | |
1808 | </listitem> | |
1809 | </varlistentry> | |
1810 | <varlistentry> | |
1811 | <term><constant>GL_LINE_WIDTH</constant></term> | |
1812 | <listitem> | |
1813 | <para> | |
1814 | </para> | |
1815 | <para> | |
1816 | <parameter>params</parameter> returns one value, | |
1817 | the line width as specified with <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>. The initial value is | |
1818 | 1. | |
1819 | </para> | |
1820 | </listitem> | |
1821 | </varlistentry> | |
1822 | <varlistentry> | |
1823 | <term><constant>GL_LINE_WIDTH_GRANULARITY</constant></term> | |
1824 | <listitem> | |
1825 | <para> | |
1826 | </para> | |
1827 | <para> | |
1828 | <parameter>params</parameter> returns one value, | |
1829 | the width difference between adjacent supported widths for antialiased lines. | |
1830 | See <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>. | |
1831 | </para> | |
1832 | </listitem> | |
1833 | </varlistentry> | |
1834 | <varlistentry> | |
1835 | <term><constant>GL_LINE_WIDTH_RANGE</constant></term> | |
1836 | <listitem> | |
1837 | <para> | |
1838 | </para> | |
1839 | <para> | |
1840 | <parameter>params</parameter> returns two values: | |
1841 | the smallest and largest supported widths for antialiased | |
1842 | lines. | |
1843 | See <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>. | |
1844 | </para> | |
1845 | </listitem> | |
1846 | </varlistentry> | |
1847 | <varlistentry> | |
1848 | <term><constant>GL_LIST_BASE</constant></term> | |
1849 | <listitem> | |
1850 | <para> | |
1851 | </para> | |
1852 | <para> | |
1853 | <parameter>params</parameter> returns one value, | |
1854 | the base offset added to all names in arrays presented to | |
1855 | <citerefentry><refentrytitle>glCallLists</refentrytitle></citerefentry>. The initial value is 0. | |
1856 | See <citerefentry><refentrytitle>glListBase</refentrytitle></citerefentry>. | |
1857 | </para> | |
1858 | </listitem> | |
1859 | </varlistentry> | |
1860 | <varlistentry> | |
1861 | <term><constant>GL_LIST_INDEX</constant></term> | |
1862 | <listitem> | |
1863 | <para> | |
1864 | </para> | |
1865 | <para> | |
1866 | <parameter>params</parameter> returns one value, | |
1867 | the name of the display list currently under construction. | |
1868 | 0 is returned if no display list is currently under | |
1869 | construction. The initial value is 0. | |
1870 | See <citerefentry><refentrytitle>glNewList</refentrytitle></citerefentry>. | |
1871 | </para> | |
1872 | </listitem> | |
1873 | </varlistentry> | |
1874 | <varlistentry> | |
1875 | <term><constant>GL_LIST_MODE</constant></term> | |
1876 | <listitem> | |
1877 | <para> | |
1878 | </para> | |
1879 | <para> | |
1880 | <parameter>params</parameter> returns one value, | |
1881 | a symbolic constant indicating the construction mode of the display list | |
1882 | currently under construction. The initial value is 0. | |
1883 | See <citerefentry><refentrytitle>glNewList</refentrytitle></citerefentry>. | |
1884 | </para> | |
1885 | </listitem> | |
1886 | </varlistentry> | |
1887 | <varlistentry> | |
1888 | <term><constant>GL_LOGIC_OP_MODE</constant></term> | |
1889 | <listitem> | |
1890 | <para> | |
1891 | </para> | |
1892 | <para> | |
1893 | <parameter>params</parameter> returns one value, | |
1894 | a symbolic constant indicating the selected logic operation | |
1895 | mode. The initial value is <constant>GL_COPY</constant>. | |
1896 | See <citerefentry><refentrytitle>glLogicOp</refentrytitle></citerefentry>. | |
1897 | </para> | |
1898 | </listitem> | |
1899 | </varlistentry> | |
1900 | <varlistentry> | |
1901 | <term><constant>GL_MAP1_COLOR_4</constant></term> | |
1902 | <listitem> | |
1903 | <para> | |
1904 | </para> | |
1905 | <para> | |
1906 | <parameter>params</parameter> returns a single boolean value indicating whether | |
1907 | 1D evaluation generates colors. The initial value is <constant>GL_FALSE</constant>. | |
1908 | See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>. | |
1909 | </para> | |
1910 | </listitem> | |
1911 | </varlistentry> | |
1912 | <varlistentry> | |
1913 | <term><constant>GL_MAP1_GRID_DOMAIN</constant></term> | |
1914 | <listitem> | |
1915 | <para> | |
1916 | </para> | |
1917 | <para> | |
1918 | <parameter>params</parameter> returns two values: | |
1919 | the endpoints of the 1D map's grid domain. The initial value is (0, 1). | |
1920 | See <citerefentry><refentrytitle>glMapGrid</refentrytitle></citerefentry>. | |
1921 | </para> | |
1922 | </listitem> | |
1923 | </varlistentry> | |
1924 | <varlistentry> | |
1925 | <term><constant>GL_MAP1_GRID_SEGMENTS</constant></term> | |
1926 | <listitem> | |
1927 | <para> | |
1928 | </para> | |
1929 | <para> | |
1930 | <parameter>params</parameter> returns one value, | |
1931 | the number of partitions in the 1D map's grid domain. The initial value | |
1932 | is 1. | |
1933 | See <citerefentry><refentrytitle>glMapGrid</refentrytitle></citerefentry>. | |
1934 | </para> | |
1935 | </listitem> | |
1936 | </varlistentry> | |
1937 | <varlistentry> | |
1938 | <term><constant>GL_MAP1_INDEX</constant></term> | |
1939 | <listitem> | |
1940 | <para> | |
1941 | </para> | |
1942 | <para> | |
1943 | <parameter>params</parameter> returns a single boolean value indicating whether | |
1944 | 1D evaluation generates color indices. The initial value is <constant>GL_FALSE</constant>. | |
1945 | See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>. | |
1946 | </para> | |
1947 | </listitem> | |
1948 | </varlistentry> | |
1949 | <varlistentry> | |
1950 | <term><constant>GL_MAP1_NORMAL</constant></term> | |
1951 | <listitem> | |
1952 | <para> | |
1953 | </para> | |
1954 | <para> | |
1955 | <parameter>params</parameter> returns a single boolean value indicating whether | |
1956 | 1D evaluation generates normals. The initial value is <constant>GL_FALSE</constant>. | |
1957 | See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>. | |
1958 | </para> | |
1959 | </listitem> | |
1960 | </varlistentry> | |
1961 | <varlistentry> | |
1962 | <term><constant>GL_MAP1_TEXTURE_COORD_1</constant></term> | |
1963 | <listitem> | |
1964 | <para> | |
1965 | </para> | |
1966 | <para> | |
1967 | <parameter>params</parameter> returns a single boolean value indicating whether | |
1968 | 1D evaluation generates 1D texture coordinates. The initial value is | |
1969 | <constant>GL_FALSE</constant>. | |
1970 | See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>. | |
1971 | </para> | |
1972 | </listitem> | |
1973 | </varlistentry> | |
1974 | <varlistentry> | |
1975 | <term><constant>GL_MAP1_TEXTURE_COORD_2</constant></term> | |
1976 | <listitem> | |
1977 | <para> | |
1978 | </para> | |
1979 | <para> | |
1980 | <parameter>params</parameter> returns a single boolean value indicating whether | |
1981 | 1D evaluation generates 2D texture coordinates. The initial value is | |
1982 | <constant>GL_FALSE</constant>. | |
1983 | See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>. | |
1984 | </para> | |
1985 | </listitem> | |
1986 | </varlistentry> | |
1987 | <varlistentry> | |
1988 | <term><constant>GL_MAP1_TEXTURE_COORD_3</constant></term> | |
1989 | <listitem> | |
1990 | <para> | |
1991 | </para> | |
1992 | <para> | |
1993 | <parameter>params</parameter> returns a single boolean value indicating whether | |
1994 | 1D evaluation generates 3D texture coordinates. The initial value is | |
1995 | <constant>GL_FALSE</constant>. | |
1996 | See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>. | |
1997 | </para> | |
1998 | </listitem> | |
1999 | </varlistentry> | |
2000 | <varlistentry> | |
2001 | <term><constant>GL_MAP1_TEXTURE_COORD_4</constant></term> | |
2002 | <listitem> | |
2003 | <para> | |
2004 | </para> | |
2005 | <para> | |
2006 | <parameter>params</parameter> returns a single boolean value indicating whether | |
2007 | 1D evaluation generates 4D texture coordinates. The initial value is | |
2008 | <constant>GL_FALSE</constant>. | |
2009 | See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>. | |
2010 | </para> | |
2011 | </listitem> | |
2012 | </varlistentry> | |
2013 | <varlistentry> | |
2014 | <term><constant>GL_MAP1_VERTEX_3</constant></term> | |
2015 | <listitem> | |
2016 | <para> | |
2017 | </para> | |
2018 | <para> | |
2019 | <parameter>params</parameter> returns a single boolean value indicating whether | |
2020 | 1D evaluation generates 3D vertex coordinates. The initial value is | |
2021 | <constant>GL_FALSE</constant>. | |
2022 | See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>. | |
2023 | </para> | |
2024 | </listitem> | |
2025 | </varlistentry> | |
2026 | <varlistentry> | |
2027 | <term><constant>GL_MAP1_VERTEX_4</constant></term> | |
2028 | <listitem> | |
2029 | <para> | |
2030 | </para> | |
2031 | <para> | |
2032 | <parameter>params</parameter> returns a single boolean value indicating whether | |
2033 | 1D evaluation generates 4D vertex coordinates. The initial value is | |
2034 | <constant>GL_FALSE</constant>. | |
2035 | See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>. | |
2036 | </para> | |
2037 | </listitem> | |
2038 | </varlistentry> | |
2039 | <varlistentry> | |
2040 | <term><constant>GL_MAP2_COLOR_4</constant></term> | |
2041 | <listitem> | |
2042 | <para> | |
2043 | </para> | |
2044 | <para> | |
2045 | <parameter>params</parameter> returns a single boolean value indicating whether | |
2046 | 2D evaluation generates colors. The initial value is <constant>GL_FALSE</constant>. | |
2047 | See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>. | |
2048 | </para> | |
2049 | </listitem> | |
2050 | </varlistentry> | |
2051 | <varlistentry> | |
2052 | <term><constant>GL_MAP2_GRID_DOMAIN</constant></term> | |
2053 | <listitem> | |
2054 | <para> | |
2055 | </para> | |
2056 | <para> | |
2057 | <parameter>params</parameter> returns four values: | |
2058 | the endpoints of the 2D map's | |
2059 | <inlineequation><mml:math><mml:mi mathvariant="italic">i</mml:mi></mml:math></inlineequation> | |
2060 | and | |
2061 | <inlineequation><mml:math><mml:mi mathvariant="italic">j</mml:mi></mml:math></inlineequation> | |
2062 | grid domains. The initial value | |
2063 | is (0,1; 0,1). | |
2064 | See <citerefentry><refentrytitle>glMapGrid</refentrytitle></citerefentry>. | |
2065 | </para> | |
2066 | </listitem> | |
2067 | </varlistentry> | |
2068 | <varlistentry> | |
2069 | <term><constant>GL_MAP2_GRID_SEGMENTS</constant></term> | |
2070 | <listitem> | |
2071 | <para> | |
2072 | </para> | |
2073 | <para> | |
2074 | <parameter>params</parameter> returns two values: | |
2075 | the number of partitions in the 2D map's | |
2076 | <inlineequation><mml:math><mml:mi mathvariant="italic">i</mml:mi></mml:math></inlineequation> | |
2077 | and | |
2078 | <inlineequation><mml:math><mml:mi mathvariant="italic">j</mml:mi></mml:math></inlineequation> | |
2079 | grid | |
2080 | domains. The initial value is (1,1). | |
2081 | See <citerefentry><refentrytitle>glMapGrid</refentrytitle></citerefentry>. | |
2082 | </para> | |
2083 | </listitem> | |
2084 | </varlistentry> | |
2085 | <varlistentry> | |
2086 | <term><constant>GL_MAP2_INDEX</constant></term> | |
2087 | <listitem> | |
2088 | <para> | |
2089 | </para> | |
2090 | <para> | |
2091 | <parameter>params</parameter> returns a single boolean value indicating whether | |
2092 | 2D evaluation generates color indices. The initial value is <constant>GL_FALSE</constant>. | |
2093 | See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>. | |
2094 | </para> | |
2095 | </listitem> | |
2096 | </varlistentry> | |
2097 | <varlistentry> | |
2098 | <term><constant>GL_MAP2_NORMAL</constant></term> | |
2099 | <listitem> | |
2100 | <para> | |
2101 | </para> | |
2102 | <para> | |
2103 | <parameter>params</parameter> returns a single boolean value indicating whether | |
2104 | 2D evaluation generates normals. The initial value is <constant>GL_FALSE</constant>. | |
2105 | See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>. | |
2106 | </para> | |
2107 | </listitem> | |
2108 | </varlistentry> | |
2109 | <varlistentry> | |
2110 | <term><constant>GL_MAP2_TEXTURE_COORD_1</constant></term> | |
2111 | <listitem> | |
2112 | <para> | |
2113 | </para> | |
2114 | <para> | |
2115 | <parameter>params</parameter> returns a single boolean value indicating whether | |
2116 | 2D evaluation generates 1D texture coordinates. The initial value is | |
2117 | <constant>GL_FALSE</constant>. | |
2118 | See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>. | |
2119 | </para> | |
2120 | </listitem> | |
2121 | </varlistentry> | |
2122 | <varlistentry> | |
2123 | <term><constant>GL_MAP2_TEXTURE_COORD_2</constant></term> | |
2124 | <listitem> | |
2125 | <para> | |
2126 | </para> | |
2127 | <para> | |
2128 | <parameter>params</parameter> returns a single boolean value indicating whether | |
2129 | 2D evaluation generates 2D texture coordinates. The initial value is | |
2130 | <constant>GL_FALSE</constant>. | |
2131 | See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>. | |
2132 | </para> | |
2133 | </listitem> | |
2134 | </varlistentry> | |
2135 | <varlistentry> | |
2136 | <term><constant>GL_MAP2_TEXTURE_COORD_3</constant></term> | |
2137 | <listitem> | |
2138 | <para> | |
2139 | </para> | |
2140 | <para> | |
2141 | <parameter>params</parameter> returns a single boolean value indicating whether | |
2142 | 2D evaluation generates 3D texture coordinates. The initial value is | |
2143 | <constant>GL_FALSE</constant>. | |
2144 | See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>. | |
2145 | </para> | |
2146 | </listitem> | |
2147 | </varlistentry> | |
2148 | <varlistentry> | |
2149 | <term><constant>GL_MAP2_TEXTURE_COORD_4</constant></term> | |
2150 | <listitem> | |
2151 | <para> | |
2152 | </para> | |
2153 | <para> | |
2154 | <parameter>params</parameter> returns a single boolean value indicating whether | |
2155 | 2D evaluation generates 4D texture coordinates. The initial value is | |
2156 | <constant>GL_FALSE</constant>. | |
2157 | See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>. | |
2158 | </para> | |
2159 | </listitem> | |
2160 | </varlistentry> | |
2161 | <varlistentry> | |
2162 | <term><constant>GL_MAP2_VERTEX_3</constant></term> | |
2163 | <listitem> | |
2164 | <para> | |
2165 | </para> | |
2166 | <para> | |
2167 | <parameter>params</parameter> returns a single boolean value indicating whether | |
2168 | 2D evaluation generates 3D vertex coordinates. The initial value is | |
2169 | <constant>GL_FALSE</constant>. | |
2170 | See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>. | |
2171 | </para> | |
2172 | </listitem> | |
2173 | </varlistentry> | |
2174 | <varlistentry> | |
2175 | <term><constant>GL_MAP2_VERTEX_4</constant></term> | |
2176 | <listitem> | |
2177 | <para> | |
2178 | </para> | |
2179 | <para> | |
2180 | <parameter>params</parameter> returns a single boolean value indicating whether | |
2181 | 2D evaluation generates 4D vertex coordinates. The initial value is | |
2182 | <constant>GL_FALSE</constant>. | |
2183 | See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>. | |
2184 | </para> | |
2185 | </listitem> | |
2186 | </varlistentry> | |
2187 | <varlistentry> | |
2188 | <term><constant>GL_MAP_COLOR</constant></term> | |
2189 | <listitem> | |
2190 | <para> | |
2191 | </para> | |
2192 | <para> | |
2193 | <parameter>params</parameter> returns a single boolean value indicating if colors and | |
2194 | color indices are to be replaced by table lookup during pixel | |
2195 | transfers. The initial value is <constant>GL_FALSE</constant>. | |
2196 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
2197 | </para> | |
2198 | </listitem> | |
2199 | </varlistentry> | |
2200 | <varlistentry> | |
2201 | <term><constant>GL_MAP_STENCIL</constant></term> | |
2202 | <listitem> | |
2203 | <para> | |
2204 | </para> | |
2205 | <para> | |
2206 | <parameter>params</parameter> returns a single boolean value indicating if stencil indices | |
2207 | are to be replaced by table lookup during pixel transfers. The initial | |
2208 | value is <constant>GL_FALSE</constant>. | |
2209 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
2210 | </para> | |
2211 | </listitem> | |
2212 | </varlistentry> | |
2213 | <varlistentry> | |
2214 | <term><constant>GL_MATRIX_MODE</constant></term> | |
2215 | <listitem> | |
2216 | <para> | |
2217 | </para> | |
2218 | <para> | |
2219 | <parameter>params</parameter> returns one value, | |
2220 | a symbolic constant indicating which matrix stack is currently the | |
2221 | target of all matrix operations. The initial value is <constant>GL_MODELVIEW</constant>. | |
2222 | See <citerefentry><refentrytitle>glMatrixMode</refentrytitle></citerefentry>. | |
2223 | </para> | |
2224 | </listitem> | |
2225 | </varlistentry> | |
2226 | <varlistentry> | |
2227 | <term><constant>GL_MAX_3D_TEXTURE_SIZE</constant></term> | |
2228 | <listitem> | |
2229 | <para> | |
2230 | </para> | |
2231 | <para> | |
2232 | <parameter>params</parameter> returns one value, | |
2233 | a rough estimate of the largest 3D texture that the GL can handle. | |
2234 | The value must be at least 16. | |
2235 | If the GL version is 1.2 or greater, use | |
2236 | <constant>GL_PROXY_TEXTURE_3D</constant> to determine if a texture is too large. | |
2237 | See <citerefentry><refentrytitle>glTexImage3D</refentrytitle></citerefentry>. | |
2238 | </para> | |
2239 | </listitem> | |
2240 | </varlistentry> | |
2241 | <varlistentry> | |
2242 | <term><constant>GL_MAX_CLIENT_ATTRIB_STACK_DEPTH</constant></term> | |
2243 | <listitem> | |
2244 | <para> | |
2245 | </para> | |
2246 | <para> | |
2247 | <parameter>params</parameter> returns one value indicating the maximum supported depth | |
2248 | of the client attribute stack. | |
2249 | See <citerefentry><refentrytitle>glPushClientAttrib</refentrytitle></citerefentry>. | |
2250 | </para> | |
2251 | </listitem> | |
2252 | </varlistentry> | |
2253 | <varlistentry> | |
2254 | <term><constant>GL_MAX_ATTRIB_STACK_DEPTH</constant></term> | |
2255 | <listitem> | |
2256 | <para> | |
2257 | </para> | |
2258 | <para> | |
2259 | <parameter>params</parameter> returns one value, | |
2260 | the maximum supported depth of the attribute stack. The value must be | |
2261 | at least 16. | |
2262 | See <citerefentry><refentrytitle>glPushAttrib</refentrytitle></citerefentry>. | |
2263 | </para> | |
2264 | </listitem> | |
2265 | </varlistentry> | |
2266 | <varlistentry> | |
2267 | <term><constant>GL_MAX_CLIP_PLANES</constant></term> | |
2268 | <listitem> | |
2269 | <para> | |
2270 | </para> | |
2271 | <para> | |
2272 | <parameter>params</parameter> returns one value, | |
2273 | the maximum number of application-defined clipping planes. The value must be at least 6. | |
2274 | See <citerefentry><refentrytitle>glClipPlane</refentrytitle></citerefentry>. | |
2275 | </para> | |
2276 | </listitem> | |
2277 | </varlistentry> | |
2278 | <varlistentry> | |
2279 | <term><constant>GL_MAX_COLOR_MATRIX_STACK_DEPTH</constant></term> | |
2280 | <listitem> | |
2281 | <para> | |
2282 | </para> | |
2283 | <para> | |
2284 | <parameter>params</parameter> returns one value, the maximum supported depth of the color matrix | |
2285 | stack. The value must be at least 2. | |
2286 | See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>. | |
2287 | </para> | |
2288 | </listitem> | |
2289 | </varlistentry> | |
2290 | <varlistentry> | |
2291 | <term><constant>GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS</constant></term> | |
2292 | <listitem> | |
2293 | <para> | |
2294 | </para> | |
2295 | <para> | |
2296 | <parameter>params</parameter> returns one value, the maximum supported texture image units that | |
2297 | can be used to access texture maps from the vertex shader and the fragment processor combined. | |
2298 | If both the vertex shader and the fragment processing stage access the same texture image | |
2299 | unit, then that counts as using two texture image units against this limit. | |
2300 | The value must be at least 2. | |
2301 | See <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>. | |
2302 | </para> | |
2303 | </listitem> | |
2304 | </varlistentry> | |
2305 | <varlistentry> | |
2306 | <term><constant>GL_MAX_CUBE_MAP_TEXTURE_SIZE</constant></term> | |
2307 | <listitem> | |
2308 | <para> | |
2309 | </para> | |
2310 | <para> | |
2311 | <parameter>params</parameter> returns one value. | |
2312 | The value gives a rough estimate of the largest cube-map texture that | |
2313 | the GL can handle. The value must be at least 16. | |
2314 | If the GL version is 1.3 or greater, use <constant>GL_PROXY_TEXTURE_CUBE_MAP</constant> | |
2315 | to determine if a texture is too large. | |
2316 | See <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>. | |
2317 | </para> | |
2318 | </listitem> | |
2319 | </varlistentry> | |
2320 | <varlistentry> | |
2321 | <term><constant>GL_MAX_DRAW_BUFFERS</constant></term> | |
2322 | <listitem> | |
2323 | <para> | |
2324 | </para> | |
2325 | <para> | |
2326 | <parameter>params</parameter> returns one value, the maximum number | |
2327 | of simultaneous output colors allowed from a fragment shader using the | |
2328 | <code>gl_FragData</code> built-in array. The value must be at least 1. | |
2329 | See <citerefentry><refentrytitle>glDrawBuffers</refentrytitle></citerefentry>. | |
2330 | </para> | |
2331 | </listitem> | |
2332 | </varlistentry> | |
2333 | <varlistentry> | |
2334 | <term><constant>GL_MAX_ELEMENTS_INDICES</constant></term> | |
2335 | <listitem> | |
2336 | <para> | |
2337 | </para> | |
2338 | <para> | |
2339 | <parameter>params</parameter> returns one value, | |
2340 | the recommended maximum number of vertex array indices. | |
2341 | See <citerefentry><refentrytitle>glDrawRangeElements</refentrytitle></citerefentry>. | |
2342 | </para> | |
2343 | </listitem> | |
2344 | </varlistentry> | |
2345 | <varlistentry> | |
2346 | <term><constant>GL_MAX_ELEMENTS_VERTICES</constant></term> | |
2347 | <listitem> | |
2348 | <para> | |
2349 | </para> | |
2350 | <para> | |
2351 | <parameter>params</parameter> returns one value, | |
2352 | the recommended maximum number of vertex array vertices. | |
2353 | See <citerefentry><refentrytitle>glDrawRangeElements</refentrytitle></citerefentry>. | |
2354 | </para> | |
2355 | </listitem> | |
2356 | </varlistentry> | |
2357 | <varlistentry> | |
2358 | <term><constant>GL_MAX_EVAL_ORDER</constant></term> | |
2359 | <listitem> | |
2360 | <para> | |
2361 | </para> | |
2362 | <para> | |
2363 | <parameter>params</parameter> returns one value, | |
2364 | the maximum equation order supported by 1D and 2D | |
2365 | evaluators. The value must be at least 8. | |
2366 | See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>. | |
2367 | </para> | |
2368 | </listitem> | |
2369 | </varlistentry> | |
2370 | <varlistentry> | |
2371 | <term><constant>GL_MAX_FRAGMENT_UNIFORM_COMPONENTS</constant></term> | |
2372 | <listitem> | |
2373 | <para> | |
2374 | </para> | |
2375 | <para> | |
2376 | <parameter>params</parameter> returns one value, | |
2377 | the maximum number of individual floating-point, integer, or boolean values that can be held | |
2378 | in uniform variable storage for a fragment shader. The value must be at least 64. | |
2379 | See <citerefentry><refentrytitle>glUniform</refentrytitle></citerefentry>. | |
2380 | </para> | |
2381 | </listitem> | |
2382 | </varlistentry> | |
2383 | <varlistentry> | |
2384 | <term><constant>GL_MAX_LIGHTS</constant></term> | |
2385 | <listitem> | |
2386 | <para> | |
2387 | </para> | |
2388 | <para> | |
2389 | <parameter>params</parameter> returns one value, | |
2390 | the maximum number of lights. The value must be at least 8. | |
2391 | See <citerefentry><refentrytitle>glLight</refentrytitle></citerefentry>. | |
2392 | </para> | |
2393 | </listitem> | |
2394 | </varlistentry> | |
2395 | <varlistentry> | |
2396 | <term><constant>GL_MAX_LIST_NESTING</constant></term> | |
2397 | <listitem> | |
2398 | <para> | |
2399 | </para> | |
2400 | <para> | |
2401 | <parameter>params</parameter> returns one value, | |
2402 | the maximum recursion depth allowed during display-list | |
2403 | traversal. The value must be at least 64. | |
2404 | See <citerefentry><refentrytitle>glCallList</refentrytitle></citerefentry>. | |
2405 | </para> | |
2406 | </listitem> | |
2407 | </varlistentry> | |
2408 | <varlistentry> | |
2409 | <term><constant>GL_MAX_MODELVIEW_STACK_DEPTH</constant></term> | |
2410 | <listitem> | |
2411 | <para> | |
2412 | </para> | |
2413 | <para> | |
2414 | <parameter>params</parameter> returns one value, | |
2415 | the maximum supported depth of the modelview matrix stack. The value must | |
2416 | be at least 32. | |
2417 | See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>. | |
2418 | </para> | |
2419 | </listitem> | |
2420 | </varlistentry> | |
2421 | <varlistentry> | |
2422 | <term><constant>GL_MAX_NAME_STACK_DEPTH</constant></term> | |
2423 | <listitem> | |
2424 | <para> | |
2425 | </para> | |
2426 | <para> | |
2427 | <parameter>params</parameter> returns one value, | |
2428 | the maximum supported depth of the selection name stack. The value must be at least 64. | |
2429 | See <citerefentry><refentrytitle>glPushName</refentrytitle></citerefentry>. | |
2430 | </para> | |
2431 | </listitem> | |
2432 | </varlistentry> | |
2433 | <varlistentry> | |
2434 | <term><constant>GL_MAX_PIXEL_MAP_TABLE</constant></term> | |
2435 | <listitem> | |
2436 | <para> | |
2437 | </para> | |
2438 | <para> | |
2439 | <parameter>params</parameter> returns one value, | |
2440 | the maximum supported size of a <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry> lookup table. | |
2441 | The value must be at least 32. | |
2442 | See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
2443 | </para> | |
2444 | </listitem> | |
2445 | </varlistentry> | |
2446 | <varlistentry> | |
2447 | <term><constant>GL_MAX_PROJECTION_STACK_DEPTH</constant></term> | |
2448 | <listitem> | |
2449 | <para> | |
2450 | </para> | |
2451 | <para> | |
2452 | <parameter>params</parameter> returns one value, the maximum supported depth of the projection | |
2453 | matrix stack. The value must be at least 2. | |
2454 | See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>. | |
2455 | </para> | |
2456 | </listitem> | |
2457 | </varlistentry> | |
2458 | <varlistentry> | |
2459 | <term><constant>GL_MAX_TEXTURE_COORDS</constant></term> | |
2460 | <listitem> | |
2461 | <para> | |
2462 | </para> | |
2463 | <para> | |
2464 | <parameter>params</parameter> returns one value, | |
2465 | the maximum number of texture coordinate sets available to vertex and fragment shaders. | |
2466 | The value must be at least 2. | |
2467 | See <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry> and | |
2468 | <citerefentry><refentrytitle>glClientActiveTexture</refentrytitle></citerefentry>. | |
2469 | </para> | |
2470 | </listitem> | |
2471 | </varlistentry> | |
2472 | <varlistentry> | |
2473 | <term><constant>GL_MAX_TEXTURE_IMAGE_UNITS</constant></term> | |
2474 | <listitem> | |
2475 | <para> | |
2476 | </para> | |
2477 | <para> | |
2478 | <parameter>params</parameter> returns one value, the maximum supported texture image units that | |
2479 | can be used to access texture maps from the fragment shader. | |
2480 | The value must be at least 2. | |
2481 | See <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>. | |
2482 | </para> | |
2483 | </listitem> | |
2484 | </varlistentry> | |
2485 | <varlistentry> | |
2486 | <term><constant>GL_MAX_TEXTURE_LOD_BIAS</constant></term> | |
2487 | <listitem> | |
2488 | <para> | |
2489 | </para> | |
2490 | <para> | |
2491 | <parameter>params</parameter> returns one value, | |
2492 | the maximum, absolute value of the texture level-of-detail bias. The | |
2493 | value must be at least 4. | |
2494 | </para> | |
2495 | </listitem> | |
2496 | </varlistentry> | |
2497 | <varlistentry> | |
2498 | <term><constant>GL_MAX_TEXTURE_SIZE</constant></term> | |
2499 | <listitem> | |
2500 | <para> | |
2501 | </para> | |
2502 | <para> | |
2503 | <parameter>params</parameter> returns one value. | |
2504 | The value gives a rough estimate of the largest texture that | |
2505 | the GL can handle. The value must be at least 64. | |
2506 | If the GL version is 1.1 or greater, use | |
2507 | <constant>GL_PROXY_TEXTURE_1D</constant> or <constant>GL_PROXY_TEXTURE_2D</constant> | |
2508 | to determine if a texture is too large. | |
2509 | See <citerefentry><refentrytitle>glTexImage1D</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>. | |
2510 | </para> | |
2511 | </listitem> | |
2512 | </varlistentry> | |
2513 | <varlistentry> | |
2514 | <term><constant>GL_MAX_TEXTURE_STACK_DEPTH</constant></term> | |
2515 | <listitem> | |
2516 | <para> | |
2517 | </para> | |
2518 | <para> | |
2519 | <parameter>params</parameter> returns one value, | |
2520 | the maximum supported depth of the texture matrix stack. The value must be at least 2. | |
2521 | See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>. | |
2522 | </para> | |
2523 | </listitem> | |
2524 | </varlistentry> | |
2525 | <varlistentry> | |
2526 | <term><constant>GL_MAX_TEXTURE_UNITS</constant></term> | |
2527 | <listitem> | |
2528 | <para> | |
2529 | </para> | |
2530 | <para> | |
2531 | <parameter>params</parameter> returns a single value indicating the number of conventional | |
2532 | texture units supported. Each conventional texture unit includes both a texture coordinate set | |
2533 | and a texture image unit. Conventional texture units may be used for fixed-function (non-shader) | |
2534 | rendering. The value must be at least 2. Additional texture coordinate sets and texture | |
2535 | image units may be accessed from vertex and fragment shaders. | |
2536 | See <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry> and | |
2537 | <citerefentry><refentrytitle>glClientActiveTexture</refentrytitle></citerefentry>. | |
2538 | </para> | |
2539 | </listitem> | |
2540 | </varlistentry> | |
2541 | <varlistentry> | |
2542 | <term><constant>GL_MAX_VARYING_FLOATS</constant></term> | |
2543 | <listitem> | |
2544 | <para> | |
2545 | </para> | |
2546 | <para> | |
2547 | <parameter>params</parameter> returns one value, | |
2548 | the maximum number of interpolators available for processing varying variables used by | |
2549 | vertex and fragment shaders. This value represents the number of individual floating-point | |
2550 | values that can be interpolated; varying variables declared as vectors, matrices, and arrays | |
2551 | will all consume multiple interpolators. The value must be at least 32. | |
2552 | </para> | |
2553 | </listitem> | |
2554 | </varlistentry> | |
2555 | <varlistentry> | |
2556 | <term><constant>GL_MAX_VERTEX_ATTRIBS</constant></term> | |
2557 | <listitem> | |
2558 | <para> | |
2559 | </para> | |
2560 | <para> | |
2561 | <parameter>params</parameter> returns one value, | |
2562 | the maximum number of 4-component generic vertex attributes accessible to a vertex shader. | |
2563 | The value must be at least 16. | |
2564 | See <citerefentry><refentrytitle>glVertexAttrib</refentrytitle></citerefentry>. | |
2565 | </para> | |
2566 | </listitem> | |
2567 | </varlistentry> | |
2568 | <varlistentry> | |
2569 | <term><constant>GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS</constant></term> | |
2570 | <listitem> | |
2571 | <para> | |
2572 | </para> | |
2573 | <para> | |
2574 | <parameter>params</parameter> returns one value, the maximum supported texture image units that | |
2575 | can be used to access texture maps from the vertex shader. The value may be 0. | |
2576 | See <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>. | |
2577 | </para> | |
2578 | </listitem> | |
2579 | </varlistentry> | |
2580 | <varlistentry> | |
2581 | <term><constant>GL_MAX_VERTEX_UNIFORM_COMPONENTS</constant></term> | |
2582 | <listitem> | |
2583 | <para> | |
2584 | </para> | |
2585 | <para> | |
2586 | <parameter>params</parameter> returns one value, | |
2587 | the maximum number of individual floating-point, integer, or boolean values that can be held | |
2588 | in uniform variable storage for a vertex shader. The value must be at least 512. | |
2589 | See <citerefentry><refentrytitle>glUniform</refentrytitle></citerefentry>. | |
2590 | </para> | |
2591 | </listitem> | |
2592 | </varlistentry> | |
2593 | <varlistentry> | |
2594 | <term><constant>GL_MAX_VIEWPORT_DIMS</constant></term> | |
2595 | <listitem> | |
2596 | <para> | |
2597 | </para> | |
2598 | <para> | |
2599 | <parameter>params</parameter> returns two values: | |
2600 | the maximum supported width and height of the viewport. | |
2601 | These must be at least as large as the visible dimensions of the display | |
2602 | being rendered to. | |
2603 | See <citerefentry><refentrytitle>glViewport</refentrytitle></citerefentry>. | |
2604 | </para> | |
2605 | </listitem> | |
2606 | </varlistentry> | |
2607 | <varlistentry> | |
2608 | <term><constant>GL_MINMAX</constant></term> | |
2609 | <listitem> | |
2610 | <para> | |
2611 | </para> | |
2612 | <para> | |
2613 | <parameter>params</parameter> returns a single boolean value indicating whether pixel minmax | |
2614 | values are computed. The initial value is <constant>GL_FALSE</constant>. | |
2615 | See <citerefentry><refentrytitle>glMinmax</refentrytitle></citerefentry>. | |
2616 | </para> | |
2617 | </listitem> | |
2618 | </varlistentry> | |
2619 | <varlistentry> | |
2620 | <term><constant>GL_MODELVIEW_MATRIX</constant></term> | |
2621 | <listitem> | |
2622 | <para> | |
2623 | </para> | |
2624 | <para> | |
2625 | <parameter>params</parameter> returns sixteen values: | |
2626 | the modelview matrix on the top of the modelview matrix stack. Initially | |
2627 | this matrix is the identity matrix. | |
2628 | See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>. | |
2629 | </para> | |
2630 | </listitem> | |
2631 | </varlistentry> | |
2632 | <varlistentry> | |
2633 | <term><constant>GL_MODELVIEW_STACK_DEPTH</constant></term> | |
2634 | <listitem> | |
2635 | <para> | |
2636 | </para> | |
2637 | <para> | |
2638 | <parameter>params</parameter> returns one value, | |
2639 | the number of matrices on the modelview matrix stack. | |
2640 | The initial value is 1. | |
2641 | See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>. | |
2642 | </para> | |
2643 | </listitem> | |
2644 | </varlistentry> | |
2645 | <varlistentry> | |
2646 | <term><constant>GL_NAME_STACK_DEPTH</constant></term> | |
2647 | <listitem> | |
2648 | <para> | |
2649 | </para> | |
2650 | <para> | |
2651 | <parameter>params</parameter> returns one value, | |
2652 | the number of names on the selection name stack. The initial value is 0. | |
2653 | See <citerefentry><refentrytitle>glPushName</refentrytitle></citerefentry>. | |
2654 | </para> | |
2655 | </listitem> | |
2656 | </varlistentry> | |
2657 | <varlistentry> | |
2658 | <term><constant>GL_NORMAL_ARRAY</constant></term> | |
2659 | <listitem> | |
2660 | <para> | |
2661 | </para> | |
2662 | <para> | |
2663 | <parameter>params</parameter> returns a single boolean value, indicating whether the normal | |
2664 | array is enabled. The initial value is <constant>GL_FALSE</constant>. | |
2665 | See <citerefentry><refentrytitle>glNormalPointer</refentrytitle></citerefentry>. | |
2666 | </para> | |
2667 | </listitem> | |
2668 | </varlistentry> | |
2669 | <varlistentry> | |
2670 | <term><constant>GL_NORMAL_ARRAY_BUFFER_BINDING</constant></term> | |
2671 | <listitem> | |
2672 | <para> | |
2673 | </para> | |
2674 | <para> | |
2675 | <parameter>params</parameter> returns a single value, the name of the buffer object | |
2676 | associated with the normal array. This buffer object would have been bound to the | |
2677 | target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to | |
2678 | <citerefentry><refentrytitle>glNormalPointer</refentrytitle></citerefentry>. | |
2679 | If no buffer object was bound to this target, 0 is returned. The initial value is 0. | |
2680 | See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>. | |
2681 | </para> | |
2682 | </listitem> | |
2683 | </varlistentry> | |
2684 | <varlistentry> | |
2685 | <term><constant>GL_NORMAL_ARRAY_STRIDE</constant></term> | |
2686 | <listitem> | |
2687 | <para> | |
2688 | </para> | |
2689 | <para> | |
2690 | <parameter>params</parameter> returns one value, | |
2691 | the byte offset between consecutive normals in the normal | |
2692 | array. The initial value is 0. | |
2693 | See <citerefentry><refentrytitle>glNormalPointer</refentrytitle></citerefentry>. | |
2694 | </para> | |
2695 | </listitem> | |
2696 | </varlistentry> | |
2697 | <varlistentry> | |
2698 | <term><constant>GL_NORMAL_ARRAY_TYPE</constant></term> | |
2699 | <listitem> | |
2700 | <para> | |
2701 | </para> | |
2702 | <para> | |
2703 | <parameter>params</parameter> returns one value, | |
2704 | the data type of each coordinate in the normal array. The initial value is | |
2705 | <constant>GL_FLOAT</constant>. | |
2706 | See <citerefentry><refentrytitle>glNormalPointer</refentrytitle></citerefentry>. | |
2707 | </para> | |
2708 | </listitem> | |
2709 | </varlistentry> | |
2710 | <varlistentry> | |
2711 | <term><constant>GL_NORMALIZE</constant></term> | |
2712 | <listitem> | |
2713 | <para> | |
2714 | </para> | |
2715 | <para> | |
2716 | <parameter>params</parameter> returns a single boolean value indicating whether normals are | |
2717 | automatically scaled to unit length after they have been transformed to | |
2718 | eye coordinates. The initial value is <constant>GL_FALSE</constant>. | |
2719 | See <citerefentry><refentrytitle>glNormal</refentrytitle></citerefentry>. | |
2720 | </para> | |
2721 | </listitem> | |
2722 | </varlistentry> | |
2723 | <varlistentry> | |
2724 | <term><constant>GL_NUM_COMPRESSED_TEXTURE_FORMATS</constant></term> | |
2725 | <listitem> | |
2726 | <para> | |
2727 | </para> | |
2728 | <para> | |
2729 | <parameter>params</parameter> returns a single integer value indicating the number of available | |
2730 | compressed texture formats. The minimum value is 0. | |
2731 | See <citerefentry><refentrytitle>glCompressedTexImage2D</refentrytitle></citerefentry>. | |
2732 | </para> | |
2733 | </listitem> | |
2734 | </varlistentry> | |
2735 | <varlistentry> | |
2736 | <term><constant>GL_PACK_ALIGNMENT</constant></term> | |
2737 | <listitem> | |
2738 | <para> | |
2739 | </para> | |
2740 | <para> | |
2741 | <parameter>params</parameter> returns one value, | |
2742 | the byte alignment used for writing pixel data to memory. The initial | |
2743 | value is 4. | |
2744 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
2745 | </para> | |
2746 | </listitem> | |
2747 | </varlistentry> | |
2748 | <varlistentry> | |
2749 | <term><constant>GL_PACK_IMAGE_HEIGHT</constant></term> | |
2750 | <listitem> | |
2751 | <para> | |
2752 | </para> | |
2753 | <para> | |
2754 | <parameter>params</parameter> returns one value, | |
2755 | the image height used for writing pixel data to memory. The initial | |
2756 | value is 0. | |
2757 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
2758 | </para> | |
2759 | </listitem> | |
2760 | </varlistentry> | |
2761 | <varlistentry> | |
2762 | <term><constant>GL_PACK_LSB_FIRST</constant></term> | |
2763 | <listitem> | |
2764 | <para> | |
2765 | </para> | |
2766 | <para> | |
2767 | <parameter>params</parameter> returns a single boolean value indicating whether single-bit | |
2768 | pixels being written to memory are written first to the least significant | |
2769 | bit of each unsigned byte. The initial value is <constant>GL_FALSE</constant>. | |
2770 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
2771 | </para> | |
2772 | </listitem> | |
2773 | </varlistentry> | |
2774 | <varlistentry> | |
2775 | <term><constant>GL_PACK_ROW_LENGTH</constant></term> | |
2776 | <listitem> | |
2777 | <para> | |
2778 | </para> | |
2779 | <para> | |
2780 | <parameter>params</parameter> returns one value, | |
2781 | the row length used for writing pixel data to memory. The initial value is | |
2782 | 0. | |
2783 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
2784 | </para> | |
2785 | </listitem> | |
2786 | </varlistentry> | |
2787 | <varlistentry> | |
2788 | <term><constant>GL_PACK_SKIP_IMAGES</constant></term> | |
2789 | <listitem> | |
2790 | <para> | |
2791 | </para> | |
2792 | <para> | |
2793 | <parameter>params</parameter> returns one value, | |
2794 | the number of pixel images skipped before the first pixel is written | |
2795 | into memory. The initial value is 0. | |
2796 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
2797 | </para> | |
2798 | </listitem> | |
2799 | </varlistentry> | |
2800 | <varlistentry> | |
2801 | <term><constant>GL_PACK_SKIP_PIXELS</constant></term> | |
2802 | <listitem> | |
2803 | <para> | |
2804 | </para> | |
2805 | <para> | |
2806 | <parameter>params</parameter> returns one value, | |
2807 | the number of pixel locations skipped before the first pixel is written | |
2808 | into memory. The initial value is 0. | |
2809 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
2810 | </para> | |
2811 | </listitem> | |
2812 | </varlistentry> | |
2813 | <varlistentry> | |
2814 | <term><constant>GL_PACK_SKIP_ROWS</constant></term> | |
2815 | <listitem> | |
2816 | <para> | |
2817 | </para> | |
2818 | <para> | |
2819 | <parameter>params</parameter> returns one value, | |
2820 | the number of rows of pixel locations skipped before the first pixel is written | |
2821 | into memory. The initial value is 0. | |
2822 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
2823 | </para> | |
2824 | </listitem> | |
2825 | </varlistentry> | |
2826 | <varlistentry> | |
2827 | <term><constant>GL_PACK_SWAP_BYTES</constant></term> | |
2828 | <listitem> | |
2829 | <para> | |
2830 | </para> | |
2831 | <para> | |
2832 | <parameter>params</parameter> returns a single boolean value indicating whether the bytes of | |
2833 | two-byte and four-byte pixel indices and components are swapped before being | |
2834 | written to memory. The initial value is <constant>GL_FALSE</constant>. | |
2835 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
2836 | </para> | |
2837 | </listitem> | |
2838 | </varlistentry> | |
2839 | <varlistentry> | |
2840 | <term><constant>GL_PERSPECTIVE_CORRECTION_HINT</constant></term> | |
2841 | <listitem> | |
2842 | <para> | |
2843 | </para> | |
2844 | <para> | |
2845 | <parameter>params</parameter> returns one value, | |
2846 | a symbolic constant indicating the mode of the perspective correction | |
2847 | hint. The initial value is <constant>GL_DONT_CARE</constant>. | |
2848 | See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>. | |
2849 | </para> | |
2850 | </listitem> | |
2851 | </varlistentry> | |
2852 | <varlistentry> | |
2853 | <term><constant>GL_PIXEL_MAP_A_TO_A_SIZE</constant></term> | |
2854 | <listitem> | |
2855 | <para> | |
2856 | </para> | |
2857 | <para> | |
2858 | <parameter>params</parameter> returns one value, | |
2859 | the size of the alpha-to-alpha pixel translation table. | |
2860 | The initial value is 1. | |
2861 | See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
2862 | </para> | |
2863 | </listitem> | |
2864 | </varlistentry> | |
2865 | <varlistentry> | |
2866 | <term><constant>GL_PIXEL_MAP_B_TO_B_SIZE</constant></term> | |
2867 | <listitem> | |
2868 | <para> | |
2869 | </para> | |
2870 | <para> | |
2871 | <parameter>params</parameter> returns one value, | |
2872 | the size of the blue-to-blue pixel translation table. | |
2873 | The initial value is 1. | |
2874 | See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
2875 | </para> | |
2876 | </listitem> | |
2877 | </varlistentry> | |
2878 | <varlistentry> | |
2879 | <term><constant>GL_PIXEL_MAP_G_TO_G_SIZE</constant></term> | |
2880 | <listitem> | |
2881 | <para> | |
2882 | </para> | |
2883 | <para> | |
2884 | <parameter>params</parameter> returns one value, | |
2885 | the size of the green-to-green pixel translation table. | |
2886 | The initial value is 1. | |
2887 | See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
2888 | </para> | |
2889 | </listitem> | |
2890 | </varlistentry> | |
2891 | <varlistentry> | |
2892 | <term><constant>GL_PIXEL_MAP_I_TO_A_SIZE</constant></term> | |
2893 | <listitem> | |
2894 | <para> | |
2895 | </para> | |
2896 | <para> | |
2897 | <parameter>params</parameter> returns one value, | |
2898 | the size of the index-to-alpha pixel translation table. | |
2899 | The initial value is 1. | |
2900 | See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
2901 | </para> | |
2902 | </listitem> | |
2903 | </varlistentry> | |
2904 | <varlistentry> | |
2905 | <term><constant>GL_PIXEL_MAP_I_TO_B_SIZE</constant></term> | |
2906 | <listitem> | |
2907 | <para> | |
2908 | </para> | |
2909 | <para> | |
2910 | <parameter>params</parameter> returns one value, | |
2911 | the size of the index-to-blue pixel translation table. | |
2912 | The initial value is 1. | |
2913 | See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
2914 | </para> | |
2915 | </listitem> | |
2916 | </varlistentry> | |
2917 | <varlistentry> | |
2918 | <term><constant>GL_PIXEL_MAP_I_TO_G_SIZE</constant></term> | |
2919 | <listitem> | |
2920 | <para> | |
2921 | </para> | |
2922 | <para> | |
2923 | <parameter>params</parameter> returns one value, | |
2924 | the size of the index-to-green pixel translation table. | |
2925 | The initial value is 1. | |
2926 | See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
2927 | </para> | |
2928 | </listitem> | |
2929 | </varlistentry> | |
2930 | <varlistentry> | |
2931 | <term><constant>GL_PIXEL_MAP_I_TO_I_SIZE</constant></term> | |
2932 | <listitem> | |
2933 | <para> | |
2934 | </para> | |
2935 | <para> | |
2936 | <parameter>params</parameter> returns one value, | |
2937 | the size of the index-to-index pixel translation table. | |
2938 | The initial value is 1. | |
2939 | See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
2940 | </para> | |
2941 | </listitem> | |
2942 | </varlistentry> | |
2943 | <varlistentry> | |
2944 | <term><constant>GL_PIXEL_MAP_I_TO_R_SIZE</constant></term> | |
2945 | <listitem> | |
2946 | <para> | |
2947 | </para> | |
2948 | <para> | |
2949 | <parameter>params</parameter> returns one value, | |
2950 | the size of the index-to-red pixel translation table. | |
2951 | The initial value is 1. | |
2952 | See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
2953 | </para> | |
2954 | </listitem> | |
2955 | </varlistentry> | |
2956 | <varlistentry> | |
2957 | <term><constant>GL_PIXEL_MAP_R_TO_R_SIZE</constant></term> | |
2958 | <listitem> | |
2959 | <para> | |
2960 | </para> | |
2961 | <para> | |
2962 | <parameter>params</parameter> returns one value, | |
2963 | the size of the red-to-red pixel translation table. | |
2964 | The initial value is 1. | |
2965 | See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
2966 | </para> | |
2967 | </listitem> | |
2968 | </varlistentry> | |
2969 | <varlistentry> | |
2970 | <term><constant>GL_PIXEL_MAP_S_TO_S_SIZE</constant></term> | |
2971 | <listitem> | |
2972 | <para> | |
2973 | </para> | |
2974 | <para> | |
2975 | <parameter>params</parameter> returns one value, | |
2976 | the size of the stencil-to-stencil pixel translation table. | |
2977 | The initial value is 1. | |
2978 | See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
2979 | </para> | |
2980 | </listitem> | |
2981 | </varlistentry> | |
2982 | <varlistentry> | |
2983 | <term><constant>GL_PIXEL_PACK_BUFFER_BINDING</constant></term> | |
2984 | <listitem> | |
2985 | <para> | |
2986 | </para> | |
2987 | <para> | |
2988 | <parameter>params</parameter> returns a single value, the name of the buffer object | |
2989 | currently bound to the target <constant>GL_PIXEL_PACK_BUFFER</constant>. If no buffer object | |
2990 | is bound to this target, 0 is returned. The initial value is 0. | |
2991 | See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>. | |
2992 | </para> | |
2993 | </listitem> | |
2994 | </varlistentry> | |
2995 | <varlistentry> | |
2996 | <term><constant>GL_PIXEL_UNPACK_BUFFER_BINDING</constant></term> | |
2997 | <listitem> | |
2998 | <para> | |
2999 | </para> | |
3000 | <para> | |
3001 | <parameter>params</parameter> returns a single value, the name of the buffer object | |
3002 | currently bound to the target <constant>GL_PIXEL_UNPACK_BUFFER</constant>. If no buffer object | |
3003 | is bound to this target, 0 is returned. The initial value is 0. | |
3004 | See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>. | |
3005 | </para> | |
3006 | </listitem> | |
3007 | </varlistentry> | |
3008 | <varlistentry> | |
3009 | <term><constant>GL_POINT_DISTANCE_ATTENUATION</constant></term> | |
3010 | <listitem> | |
3011 | <para> | |
3012 | </para> | |
3013 | <para> | |
3014 | <parameter>params</parameter> returns three values, | |
3015 | the coefficients for computing the attenuation value for points. | |
3016 | See <citerefentry><refentrytitle>glPointParameter</refentrytitle></citerefentry>. | |
3017 | </para> | |
3018 | </listitem> | |
3019 | </varlistentry> | |
3020 | <varlistentry> | |
3021 | <term><constant>GL_POINT_FADE_THRESHOLD_SIZE</constant></term> | |
3022 | <listitem> | |
3023 | <para> | |
3024 | </para> | |
3025 | <para> | |
3026 | <parameter>params</parameter> returns one value, | |
3027 | the point size threshold for determining the point size. | |
3028 | See <citerefentry><refentrytitle>glPointParameter</refentrytitle></citerefentry>. | |
3029 | </para> | |
3030 | </listitem> | |
3031 | </varlistentry> | |
3032 | <varlistentry> | |
3033 | <term><constant>GL_POINT_SIZE</constant></term> | |
3034 | <listitem> | |
3035 | <para> | |
3036 | </para> | |
3037 | <para> | |
3038 | <parameter>params</parameter> returns one value, | |
3039 | the point size as specified by <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>. The initial value is 1. | |
3040 | </para> | |
3041 | </listitem> | |
3042 | </varlistentry> | |
3043 | <varlistentry> | |
3044 | <term><constant>GL_POINT_SIZE_GRANULARITY</constant></term> | |
3045 | <listitem> | |
3046 | <para> | |
3047 | </para> | |
3048 | <para> | |
3049 | <parameter>params</parameter> returns one value, | |
3050 | the size difference between adjacent supported sizes for antialiased points. | |
3051 | See <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>. | |
3052 | </para> | |
3053 | </listitem> | |
3054 | </varlistentry> | |
3055 | <varlistentry> | |
3056 | <term><constant>GL_POINT_SIZE_MAX</constant></term> | |
3057 | <listitem> | |
3058 | <para> | |
3059 | </para> | |
3060 | <para> | |
3061 | <parameter>params</parameter> returns one value, | |
3062 | the upper bound for the attenuated point sizes. The initial value is 0.0. | |
3063 | See <citerefentry><refentrytitle>glPointParameter</refentrytitle></citerefentry>. | |
3064 | </para> | |
3065 | </listitem> | |
3066 | </varlistentry> | |
3067 | <varlistentry> | |
3068 | <term><constant>GL_POINT_SIZE_MIN</constant></term> | |
3069 | <listitem> | |
3070 | <para> | |
3071 | </para> | |
3072 | <para> | |
3073 | <parameter>params</parameter> returns one value, | |
3074 | the lower bound for the attenuated point sizes. The initial value is 1.0. | |
3075 | See <citerefentry><refentrytitle>glPointParameter</refentrytitle></citerefentry>. | |
3076 | </para> | |
3077 | </listitem> | |
3078 | </varlistentry> | |
3079 | <varlistentry> | |
3080 | <term><constant>GL_POINT_SIZE_RANGE</constant></term> | |
3081 | <listitem> | |
3082 | <para> | |
3083 | </para> | |
3084 | <para> | |
3085 | <parameter>params</parameter> returns two values: | |
3086 | the smallest and largest supported sizes for antialiased | |
3087 | points. The smallest size must be at most 1, and the largest size must | |
3088 | be at least 1. | |
3089 | See <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>. | |
3090 | </para> | |
3091 | </listitem> | |
3092 | </varlistentry> | |
3093 | <varlistentry> | |
3094 | <term><constant>GL_POINT_SMOOTH</constant></term> | |
3095 | <listitem> | |
3096 | <para> | |
3097 | </para> | |
3098 | <para> | |
3099 | <parameter>params</parameter> returns a single boolean value indicating whether antialiasing of | |
3100 | points is enabled. The initial value is <constant>GL_FALSE</constant>. | |
3101 | See <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>. | |
3102 | </para> | |
3103 | </listitem> | |
3104 | </varlistentry> | |
3105 | <varlistentry> | |
3106 | <term><constant>GL_POINT_SMOOTH_HINT</constant></term> | |
3107 | <listitem> | |
3108 | <para> | |
3109 | </para> | |
3110 | <para> | |
3111 | <parameter>params</parameter> returns one value, | |
3112 | a symbolic constant indicating the mode of the point antialiasing | |
3113 | hint. The initial value is <constant>GL_DONT_CARE</constant>. | |
3114 | See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>. | |
3115 | </para> | |
3116 | </listitem> | |
3117 | </varlistentry> | |
3118 | <varlistentry> | |
3119 | <term><constant>GL_POINT_SPRITE</constant></term> | |
3120 | <listitem> | |
3121 | <para> | |
3122 | </para> | |
3123 | <para> | |
3124 | <parameter>params</parameter> returns a single boolean value indicating whether point sprite is | |
3125 | enabled. The initial value is <constant>GL_FALSE</constant>. | |
3126 | </para> | |
3127 | </listitem> | |
3128 | </varlistentry> | |
3129 | <varlistentry> | |
3130 | <term><constant>GL_POLYGON_MODE</constant></term> | |
3131 | <listitem> | |
3132 | <para> | |
3133 | </para> | |
3134 | <para> | |
3135 | <parameter>params</parameter> returns two values: | |
3136 | symbolic constants indicating whether front-facing and back-facing polygons | |
3137 | are rasterized as points, lines, or filled polygons. The initial value is | |
3138 | <constant>GL_FILL</constant>. | |
3139 | See <citerefentry><refentrytitle>glPolygonMode</refentrytitle></citerefentry>. | |
3140 | </para> | |
3141 | </listitem> | |
3142 | </varlistentry> | |
3143 | <varlistentry> | |
3144 | <term><constant>GL_POLYGON_OFFSET_FACTOR</constant></term> | |
3145 | <listitem> | |
3146 | <para> | |
3147 | </para> | |
3148 | <para> | |
3149 | <parameter>params</parameter> returns one value, | |
3150 | the scaling factor used to determine the variable offset that is added | |
3151 | to the depth value of each fragment generated when a polygon is | |
3152 | rasterized. The initial value is 0. | |
3153 | See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>. | |
3154 | </para> | |
3155 | </listitem> | |
3156 | </varlistentry> | |
3157 | <varlistentry> | |
3158 | <term><constant>GL_POLYGON_OFFSET_UNITS</constant></term> | |
3159 | <listitem> | |
3160 | <para> | |
3161 | </para> | |
3162 | <para> | |
3163 | <parameter>params</parameter> returns one value. | |
3164 | This value is multiplied by an implementation-specific value and then | |
3165 | added to the depth value of each fragment | |
3166 | generated when a polygon is rasterized. The initial value is 0. | |
3167 | See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>. | |
3168 | </para> | |
3169 | </listitem> | |
3170 | </varlistentry> | |
3171 | <varlistentry> | |
3172 | <term><constant>GL_POLYGON_OFFSET_FILL</constant></term> | |
3173 | <listitem> | |
3174 | <para> | |
3175 | </para> | |
3176 | <para> | |
3177 | <parameter>params</parameter> returns a single boolean value indicating whether polygon offset | |
3178 | is enabled for polygons in fill mode. The initial value is <constant>GL_FALSE</constant>. | |
3179 | See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>. | |
3180 | </para> | |
3181 | </listitem> | |
3182 | </varlistentry> | |
3183 | <varlistentry> | |
3184 | <term><constant>GL_POLYGON_OFFSET_LINE</constant></term> | |
3185 | <listitem> | |
3186 | <para> | |
3187 | </para> | |
3188 | <para> | |
3189 | <parameter>params</parameter> returns a single boolean value indicating whether polygon offset | |
3190 | is enabled for polygons in line mode. The initial value is <constant>GL_FALSE</constant>. | |
3191 | See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>. | |
3192 | </para> | |
3193 | </listitem> | |
3194 | </varlistentry> | |
3195 | <varlistentry> | |
3196 | <term><constant>GL_POLYGON_OFFSET_POINT</constant></term> | |
3197 | <listitem> | |
3198 | <para> | |
3199 | </para> | |
3200 | <para> | |
3201 | <parameter>params</parameter> returns a single boolean value indicating whether polygon offset | |
3202 | is enabled for polygons in point mode. The initial value is <constant>GL_FALSE</constant>. | |
3203 | See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>. | |
3204 | </para> | |
3205 | </listitem> | |
3206 | </varlistentry> | |
3207 | <varlistentry> | |
3208 | <term><constant>GL_POLYGON_SMOOTH</constant></term> | |
3209 | <listitem> | |
3210 | <para> | |
3211 | </para> | |
3212 | <para> | |
3213 | <parameter>params</parameter> returns a single boolean value indicating whether antialiasing of | |
3214 | polygons is enabled. The initial value is <constant>GL_FALSE</constant>. | |
3215 | See <citerefentry><refentrytitle>glPolygonMode</refentrytitle></citerefentry>. | |
3216 | </para> | |
3217 | </listitem> | |
3218 | </varlistentry> | |
3219 | <varlistentry> | |
3220 | <term><constant>GL_POLYGON_SMOOTH_HINT</constant></term> | |
3221 | <listitem> | |
3222 | <para> | |
3223 | </para> | |
3224 | <para> | |
3225 | <parameter>params</parameter> returns one value, | |
3226 | a symbolic constant indicating the mode of the polygon antialiasing | |
3227 | hint. The initial value is <constant>GL_DONT_CARE</constant>. | |
3228 | See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>. | |
3229 | </para> | |
3230 | </listitem> | |
3231 | </varlistentry> | |
3232 | <varlistentry> | |
3233 | <term><constant>GL_POLYGON_STIPPLE</constant></term> | |
3234 | <listitem> | |
3235 | <para> | |
3236 | </para> | |
3237 | <para> | |
3238 | <parameter>params</parameter> returns a single boolean value indicating whether polygon | |
3239 | stippling is enabled. The initial value is <constant>GL_FALSE</constant>. | |
3240 | See <citerefentry><refentrytitle>glPolygonStipple</refentrytitle></citerefentry>. | |
3241 | </para> | |
3242 | </listitem> | |
3243 | </varlistentry> | |
3244 | <varlistentry> | |
3245 | <term><constant>GL_POST_COLOR_MATRIX_COLOR_TABLE</constant></term> | |
3246 | <listitem> | |
3247 | <para> | |
3248 | </para> | |
3249 | <para> | |
3250 | <parameter>params</parameter> returns a single boolean value indicating whether post color | |
3251 | matrix transformation lookup is enabled. | |
3252 | The initial value is <constant>GL_FALSE</constant>. | |
3253 | See <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>. | |
3254 | </para> | |
3255 | </listitem> | |
3256 | </varlistentry> | |
3257 | <varlistentry> | |
3258 | <term><constant>GL_POST_COLOR_MATRIX_RED_BIAS</constant></term> | |
3259 | <listitem> | |
3260 | <para> | |
3261 | </para> | |
3262 | <para> | |
3263 | <parameter>params</parameter> returns one value, the red bias factor applied to RGBA fragments | |
3264 | after color matrix transformations. | |
3265 | The initial value is 0. | |
3266 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3267 | </para> | |
3268 | </listitem> | |
3269 | </varlistentry> | |
3270 | <varlistentry> | |
3271 | <term><constant>GL_POST_COLOR_MATRIX_GREEN_BIAS</constant></term> | |
3272 | <listitem> | |
3273 | <para> | |
3274 | </para> | |
3275 | <para> | |
3276 | <parameter>params</parameter> returns one value, the green bias factor applied to RGBA fragments | |
3277 | after color matrix transformations. | |
3278 | The initial value is 0. | |
3279 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry> | |
3280 | </para> | |
3281 | </listitem> | |
3282 | </varlistentry> | |
3283 | <varlistentry> | |
3284 | <term><constant>GL_POST_COLOR_MATRIX_BLUE_BIAS</constant></term> | |
3285 | <listitem> | |
3286 | <para> | |
3287 | </para> | |
3288 | <para> | |
3289 | <parameter>params</parameter> returns one value, the blue bias factor applied to RGBA fragments | |
3290 | after color matrix transformations. | |
3291 | The initial value is 0. | |
3292 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3293 | </para> | |
3294 | </listitem> | |
3295 | </varlistentry> | |
3296 | <varlistentry> | |
3297 | <term><constant>GL_POST_COLOR_MATRIX_ALPHA_BIAS</constant></term> | |
3298 | <listitem> | |
3299 | <para> | |
3300 | </para> | |
3301 | <para> | |
3302 | <parameter>params</parameter> returns one value, the alpha bias factor applied to RGBA fragments | |
3303 | after color matrix transformations. | |
3304 | The initial value is 0. | |
3305 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3306 | </para> | |
3307 | </listitem> | |
3308 | </varlistentry> | |
3309 | <varlistentry> | |
3310 | <term><constant>GL_POST_COLOR_MATRIX_RED_SCALE</constant></term> | |
3311 | <listitem> | |
3312 | <para> | |
3313 | </para> | |
3314 | <para> | |
3315 | <parameter>params</parameter> returns one value, the red scale factor applied to RGBA fragments | |
3316 | after color matrix transformations. | |
3317 | The initial value is 1. | |
3318 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3319 | </para> | |
3320 | </listitem> | |
3321 | </varlistentry> | |
3322 | <varlistentry> | |
3323 | <term><constant>GL_POST_COLOR_MATRIX_GREEN_SCALE</constant></term> | |
3324 | <listitem> | |
3325 | <para> | |
3326 | </para> | |
3327 | <para> | |
3328 | <parameter>params</parameter> returns one value, the green scale factor applied to RGBA fragments | |
3329 | after color matrix transformations. | |
3330 | The initial value is 1. | |
3331 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3332 | </para> | |
3333 | </listitem> | |
3334 | </varlistentry> | |
3335 | <varlistentry> | |
3336 | <term><constant>GL_POST_COLOR_MATRIX_BLUE_SCALE</constant></term> | |
3337 | <listitem> | |
3338 | <para> | |
3339 | </para> | |
3340 | <para> | |
3341 | <parameter>params</parameter> returns one value, the blue scale factor applied to RGBA fragments | |
3342 | after color matrix transformations. | |
3343 | The initial value is 1. | |
3344 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3345 | </para> | |
3346 | </listitem> | |
3347 | </varlistentry> | |
3348 | <varlistentry> | |
3349 | <term><constant>GL_POST_COLOR_MATRIX_ALPHA_SCALE</constant></term> | |
3350 | <listitem> | |
3351 | <para> | |
3352 | </para> | |
3353 | <para> | |
3354 | <parameter>params</parameter> returns one value, the alpha scale factor applied to RGBA fragments | |
3355 | after color matrix transformations. | |
3356 | The initial value is 1. | |
3357 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3358 | </para> | |
3359 | </listitem> | |
3360 | </varlistentry> | |
3361 | <varlistentry> | |
3362 | <term><constant>GL_POST_CONVOLUTION_COLOR_TABLE</constant></term> | |
3363 | <listitem> | |
3364 | <para> | |
3365 | </para> | |
3366 | <para> | |
3367 | <parameter>params</parameter> returns a single boolean value indicating whether post convolution | |
3368 | lookup is enabled. The initial value is <constant>GL_FALSE</constant>. | |
3369 | See <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>. | |
3370 | </para> | |
3371 | </listitem> | |
3372 | </varlistentry> | |
3373 | <varlistentry> | |
3374 | <term><constant>GL_POST_CONVOLUTION_RED_BIAS</constant></term> | |
3375 | <listitem> | |
3376 | <para> | |
3377 | </para> | |
3378 | <para> | |
3379 | <parameter>params</parameter> returns one value, the red bias factor applied to RGBA fragments | |
3380 | after convolution. The initial value is 0. | |
3381 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3382 | </para> | |
3383 | </listitem> | |
3384 | </varlistentry> | |
3385 | <varlistentry> | |
3386 | <term><constant>GL_POST_CONVOLUTION_GREEN_BIAS</constant></term> | |
3387 | <listitem> | |
3388 | <para> | |
3389 | </para> | |
3390 | <para> | |
3391 | <parameter>params</parameter> returns one value, the green bias factor applied to RGBA fragments | |
3392 | after convolution. The initial value is 0. | |
3393 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3394 | </para> | |
3395 | </listitem> | |
3396 | </varlistentry> | |
3397 | <varlistentry> | |
3398 | <term><constant>GL_POST_CONVOLUTION_BLUE_BIAS</constant></term> | |
3399 | <listitem> | |
3400 | <para> | |
3401 | </para> | |
3402 | <para> | |
3403 | <parameter>params</parameter> returns one value, the blue bias factor applied to RGBA fragments | |
3404 | after convolution. The initial value is 0. | |
3405 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3406 | </para> | |
3407 | </listitem> | |
3408 | </varlistentry> | |
3409 | <varlistentry> | |
3410 | <term><constant>GL_POST_CONVOLUTION_ALPHA_BIAS</constant></term> | |
3411 | <listitem> | |
3412 | <para> | |
3413 | </para> | |
3414 | <para> | |
3415 | <parameter>params</parameter> returns one value, the alpha bias factor applied to RGBA fragments | |
3416 | after convolution. The initial value is 0. | |
3417 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3418 | </para> | |
3419 | </listitem> | |
3420 | </varlistentry> | |
3421 | <varlistentry> | |
3422 | <term><constant>GL_POST_CONVOLUTION_RED_SCALE</constant></term> | |
3423 | <listitem> | |
3424 | <para> | |
3425 | </para> | |
3426 | <para> | |
3427 | <parameter>params</parameter> returns one value, the red scale factor applied to RGBA fragments | |
3428 | after convolution. The initial value is 1. | |
3429 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3430 | </para> | |
3431 | </listitem> | |
3432 | </varlistentry> | |
3433 | <varlistentry> | |
3434 | <term><constant>GL_POST_CONVOLUTION_GREEN_SCALE</constant></term> | |
3435 | <listitem> | |
3436 | <para> | |
3437 | </para> | |
3438 | <para> | |
3439 | <parameter>params</parameter> returns one value, the green scale factor applied to RGBA fragments | |
3440 | after convolution. The initial value is 1. | |
3441 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3442 | </para> | |
3443 | </listitem> | |
3444 | </varlistentry> | |
3445 | <varlistentry> | |
3446 | <term><constant>GL_POST_CONVOLUTION_BLUE_SCALE</constant></term> | |
3447 | <listitem> | |
3448 | <para> | |
3449 | </para> | |
3450 | <para> | |
3451 | <parameter>params</parameter> returns one value, the blue scale factor applied to RGBA fragments | |
3452 | after convolution. The initial value is 1. | |
3453 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3454 | </para> | |
3455 | </listitem> | |
3456 | </varlistentry> | |
3457 | <varlistentry> | |
3458 | <term><constant>GL_POST_CONVOLUTION_ALPHA_SCALE</constant></term> | |
3459 | <listitem> | |
3460 | <para> | |
3461 | </para> | |
3462 | <para> | |
3463 | <parameter>params</parameter> returns one value, the alpha scale factor applied to RGBA fragments | |
3464 | after convolution. The initial value is 1. | |
3465 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3466 | </para> | |
3467 | </listitem> | |
3468 | </varlistentry> | |
3469 | <varlistentry> | |
3470 | <term><constant>GL_PROJECTION_MATRIX</constant></term> | |
3471 | <listitem> | |
3472 | <para> | |
3473 | </para> | |
3474 | <para> | |
3475 | <parameter>params</parameter> returns sixteen values: | |
3476 | the projection matrix on the top of the projection matrix | |
3477 | stack. Initially this matrix is the identity matrix. | |
3478 | See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>. | |
3479 | </para> | |
3480 | </listitem> | |
3481 | </varlistentry> | |
3482 | <varlistentry> | |
3483 | <term><constant>GL_PROJECTION_STACK_DEPTH</constant></term> | |
3484 | <listitem> | |
3485 | <para> | |
3486 | </para> | |
3487 | <para> | |
3488 | <parameter>params</parameter> returns one value, | |
3489 | the number of matrices on the projection matrix stack. | |
3490 | The initial value is 1. | |
3491 | See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>. | |
3492 | </para> | |
3493 | </listitem> | |
3494 | </varlistentry> | |
3495 | <varlistentry> | |
3496 | <term><constant>GL_READ_BUFFER</constant></term> | |
3497 | <listitem> | |
3498 | <para> | |
3499 | </para> | |
3500 | <para> | |
3501 | <parameter>params</parameter> returns one value, | |
3502 | a symbolic constant indicating which color buffer is selected for | |
3503 | reading. The initial value is <constant>GL_BACK</constant> if there is a back buffer, | |
3504 | otherwise it is <constant>GL_FRONT</constant>. | |
3505 | See | |
3506 | <citerefentry><refentrytitle>glReadPixels</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glAccum</refentrytitle></citerefentry>. | |
3507 | </para> | |
3508 | </listitem> | |
3509 | </varlistentry> | |
3510 | <varlistentry> | |
3511 | <term><constant>GL_RED_BIAS</constant></term> | |
3512 | <listitem> | |
3513 | <para> | |
3514 | </para> | |
3515 | <para> | |
3516 | <parameter>params</parameter> returns one value, | |
3517 | the red bias factor used during pixel transfers. The initial value is 0. | |
3518 | </para> | |
3519 | </listitem> | |
3520 | </varlistentry> | |
3521 | <varlistentry> | |
3522 | <term><constant>GL_RED_BITS</constant></term> | |
3523 | <listitem> | |
3524 | <para> | |
3525 | </para> | |
3526 | <para> | |
3527 | <parameter>params</parameter> returns one value, | |
3528 | the number of red bitplanes in each color buffer. | |
3529 | </para> | |
3530 | </listitem> | |
3531 | </varlistentry> | |
3532 | <varlistentry> | |
3533 | <term><constant>GL_RED_SCALE</constant></term> | |
3534 | <listitem> | |
3535 | <para> | |
3536 | </para> | |
3537 | <para> | |
3538 | <parameter>params</parameter> returns one value, | |
3539 | the red scale factor used during pixel transfers. The initial value is 1. | |
3540 | See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>. | |
3541 | </para> | |
3542 | </listitem> | |
3543 | </varlistentry> | |
3544 | <varlistentry> | |
3545 | <term><constant>GL_RENDER_MODE</constant></term> | |
3546 | <listitem> | |
3547 | <para> | |
3548 | </para> | |
3549 | <para> | |
3550 | <parameter>params</parameter> returns one value, | |
3551 | a symbolic constant indicating whether the GL is in render, | |
3552 | select, | |
3553 | or feedback mode. The initial value is <constant>GL_RENDER</constant>. | |
3554 | See <citerefentry><refentrytitle>glRenderMode</refentrytitle></citerefentry>. | |
3555 | </para> | |
3556 | </listitem> | |
3557 | </varlistentry> | |
3558 | <varlistentry> | |
3559 | <term><constant>GL_RESCALE_NORMAL</constant></term> | |
3560 | <listitem> | |
3561 | <para> | |
3562 | </para> | |
3563 | <para> | |
3564 | <parameter>params</parameter> returns single boolean value | |
3565 | indicating whether normal rescaling is enabled. | |
3566 | See <citerefentry><refentrytitle>glEnable</refentrytitle></citerefentry>. | |
3567 | </para> | |
3568 | </listitem> | |
3569 | </varlistentry> | |
3570 | <varlistentry> | |
3571 | <term><constant>GL_RGBA_MODE</constant></term> | |
3572 | <listitem> | |
3573 | <para> | |
3574 | </para> | |
3575 | <para> | |
3576 | <parameter>params</parameter> returns a single boolean value indicating whether the GL is in RGBA | |
3577 | mode (true) or color index mode (false). | |
3578 | See <citerefentry><refentrytitle>glColor</refentrytitle></citerefentry>. | |
3579 | </para> | |
3580 | </listitem> | |
3581 | </varlistentry> | |
3582 | <varlistentry> | |
3583 | <term><constant>GL_SAMPLE_BUFFERS</constant></term> | |
3584 | <listitem> | |
3585 | <para> | |
3586 | </para> | |
3587 | <para> | |
3588 | <parameter>params</parameter> returns a single integer value indicating the number of sample buffers | |
3589 | associated with the framebuffer. | |
3590 | See <citerefentry><refentrytitle>glSampleCoverage</refentrytitle></citerefentry>. | |
3591 | </para> | |
3592 | </listitem> | |
3593 | </varlistentry> | |
3594 | <varlistentry> | |
3595 | <term><constant>GL_SAMPLE_COVERAGE_VALUE</constant></term> | |
3596 | <listitem> | |
3597 | <para> | |
3598 | </para> | |
3599 | <para> | |
3600 | <parameter>params</parameter> returns a single positive floating-point value indicating the | |
3601 | current sample coverage value. | |
3602 | See <citerefentry><refentrytitle>glSampleCoverage</refentrytitle></citerefentry>. | |
3603 | </para> | |
3604 | </listitem> | |
3605 | </varlistentry> | |
3606 | <varlistentry> | |
3607 | <term><constant>GL_SAMPLE_COVERAGE_INVERT</constant></term> | |
3608 | <listitem> | |
3609 | <para> | |
3610 | </para> | |
3611 | <para> | |
3612 | <parameter>params</parameter> returns a single boolean value indicating if the temporary | |
3613 | coverage value should be inverted. | |
3614 | See <citerefentry><refentrytitle>glSampleCoverage</refentrytitle></citerefentry>. | |
3615 | </para> | |
3616 | </listitem> | |
3617 | </varlistentry> | |
3618 | <varlistentry> | |
3619 | <term><constant>GL_SAMPLES</constant></term> | |
3620 | <listitem> | |
3621 | <para> | |
3622 | </para> | |
3623 | <para> | |
3624 | <parameter>params</parameter> returns a single integer value indicating the coverage mask size. | |
3625 | See <citerefentry><refentrytitle>glSampleCoverage</refentrytitle></citerefentry>. | |
3626 | </para> | |
3627 | </listitem> | |
3628 | </varlistentry> | |
3629 | <varlistentry> | |
3630 | <term><constant>GL_SCISSOR_BOX</constant></term> | |
3631 | <listitem> | |
3632 | <para> | |
3633 | </para> | |
3634 | <para> | |
3635 | <parameter>params</parameter> returns four values: | |
3636 | the | |
3637 | <inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation> | |
3638 | and | |
3639 | <inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation> | |
3640 | window coordinates of the scissor box, | |
3641 | followed by its width and height. | |
3642 | Initially the | |
3643 | <inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation> | |
3644 | and | |
3645 | <inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation> | |
3646 | window coordinates are both 0 and the | |
3647 | width and height are set to the size of the window. | |
3648 | See <citerefentry><refentrytitle>glScissor</refentrytitle></citerefentry>. | |
3649 | </para> | |
3650 | </listitem> | |
3651 | </varlistentry> | |
3652 | <varlistentry> | |
3653 | <term><constant>GL_SCISSOR_TEST</constant></term> | |
3654 | <listitem> | |
3655 | <para> | |
3656 | </para> | |
3657 | <para> | |
3658 | <parameter>params</parameter> returns a single boolean value indicating whether scissoring is | |
3659 | enabled. The initial value is <constant>GL_FALSE</constant>. | |
3660 | See <citerefentry><refentrytitle>glScissor</refentrytitle></citerefentry>. | |
3661 | </para> | |
3662 | </listitem> | |
3663 | </varlistentry> | |
3664 | <varlistentry> | |
3665 | <term><constant>GL_SECONDARY_COLOR_ARRAY</constant></term> | |
3666 | <listitem> | |
3667 | <para> | |
3668 | </para> | |
3669 | <para> | |
3670 | <parameter>params</parameter> returns a single boolean value indicating whether the secondary color array is enabled. The initial value is <constant>GL_FALSE</constant>. | |
3671 | See <citerefentry><refentrytitle>glSecondaryColorPointer</refentrytitle></citerefentry>. | |
3672 | </para> | |
3673 | </listitem> | |
3674 | </varlistentry> | |
3675 | <varlistentry> | |
3676 | <term><constant>GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING</constant></term> | |
3677 | <listitem> | |
3678 | <para> | |
3679 | </para> | |
3680 | <para> | |
3681 | <parameter>params</parameter> returns a single value, the name of the buffer object | |
3682 | associated with the secondary color array. This buffer object would have been bound to the | |
3683 | target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to | |
3684 | <citerefentry><refentrytitle>glSecondaryColorPointer</refentrytitle></citerefentry>. | |
3685 | If no buffer object was bound to this target, 0 is returned. The initial value is 0. | |
3686 | See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>. | |
3687 | </para> | |
3688 | </listitem> | |
3689 | </varlistentry> | |
3690 | <varlistentry> | |
3691 | <term><constant>GL_SECONDARY_COLOR_ARRAY_SIZE</constant></term> | |
3692 | <listitem> | |
3693 | <para> | |
3694 | </para> | |
3695 | <para> | |
3696 | <parameter>params</parameter> returns one value, the number of components per color in the | |
3697 | secondary color array. The initial value is 3. | |
3698 | See <citerefentry><refentrytitle>glSecondaryColorPointer</refentrytitle></citerefentry>. | |
3699 | </para> | |
3700 | </listitem> | |
3701 | </varlistentry> | |
3702 | <varlistentry> | |
3703 | <term><constant>GL_SECONDARY_COLOR_ARRAY_STRIDE</constant></term> | |
3704 | <listitem> | |
3705 | <para> | |
3706 | </para> | |
3707 | <para> | |
3708 | <parameter>params</parameter> returns one value, the byte offset between consecutive colors in | |
3709 | the secondary color array. The initial value is 0. | |
3710 | See <citerefentry><refentrytitle>glSecondaryColorPointer</refentrytitle></citerefentry>. | |
3711 | </para> | |
3712 | </listitem> | |
3713 | </varlistentry> | |
3714 | <varlistentry> | |
3715 | <term><constant>GL_SECONDARY_COLOR_ARRAY_TYPE</constant></term> | |
3716 | <listitem> | |
3717 | <para> | |
3718 | </para> | |
3719 | <para> | |
3720 | <parameter>params</parameter> returns one value, the data type of each component in the secondary | |
3721 | color array. The initial value is <constant>GL_FLOAT</constant>. | |
3722 | See <citerefentry><refentrytitle>glSecondaryColorPointer</refentrytitle></citerefentry>. | |
3723 | </para> | |
3724 | </listitem> | |
3725 | </varlistentry> | |
3726 | <varlistentry> | |
3727 | <term><constant>GL_SELECTION_BUFFER_SIZE</constant></term> | |
3728 | <listitem> | |
3729 | <para> | |
3730 | </para> | |
3731 | <para> | |
3732 | <parameter>params</parameter> return one value, | |
3733 | the size of the selection buffer. | |
3734 | See <citerefentry><refentrytitle>glSelectBuffer</refentrytitle></citerefentry>. | |
3735 | </para> | |
3736 | </listitem> | |
3737 | </varlistentry> | |
3738 | <varlistentry> | |
3739 | <term><constant>GL_SEPARABLE_2D</constant></term> | |
3740 | <listitem> | |
3741 | <para> | |
3742 | </para> | |
3743 | <para> | |
3744 | <parameter>params</parameter> returns a single boolean value indicating whether 2D separable | |
3745 | convolution is enabled. The initial value is <constant>GL_FALSE</constant>. | |
3746 | See <citerefentry><refentrytitle>glSeparableFilter2D</refentrytitle></citerefentry>. | |
3747 | </para> | |
3748 | </listitem> | |
3749 | </varlistentry> | |
3750 | <varlistentry> | |
3751 | <term><constant>GL_SHADE_MODEL</constant></term> | |
3752 | <listitem> | |
3753 | <para> | |
3754 | </para> | |
3755 | <para> | |
3756 | <parameter>params</parameter> returns one value, | |
3757 | a symbolic constant indicating whether the shading mode is flat or | |
3758 | smooth. The initial value is <constant>GL_SMOOTH</constant>. | |
3759 | See <citerefentry><refentrytitle>glShadeModel</refentrytitle></citerefentry>. | |
3760 | </para> | |
3761 | </listitem> | |
3762 | </varlistentry> | |
3763 | <varlistentry> | |
3764 | <term><constant>GL_SMOOTH_LINE_WIDTH_RANGE</constant></term> | |
3765 | <listitem> | |
3766 | <para> | |
3767 | </para> | |
3768 | <para> | |
3769 | <parameter>params</parameter> returns two values, | |
3770 | the smallest and largest supported widths for antialiased lines. | |
3771 | See <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>. | |
3772 | </para> | |
3773 | </listitem> | |
3774 | </varlistentry> | |
3775 | <varlistentry> | |
3776 | <term><constant>GL_SMOOTH_LINE_WIDTH_GRANULARITY</constant></term> | |
3777 | <listitem> | |
3778 | <para> | |
3779 | </para> | |
3780 | <para> | |
3781 | <parameter>params</parameter> returns one value, | |
3782 | the granularity of widths for antialiased lines. | |
3783 | See <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>. | |
3784 | </para> | |
3785 | </listitem> | |
3786 | </varlistentry> | |
3787 | <varlistentry> | |
3788 | <term><constant>GL_SMOOTH_POINT_SIZE_RANGE</constant></term> | |
3789 | <listitem> | |
3790 | <para> | |
3791 | </para> | |
3792 | <para> | |
3793 | <parameter>params</parameter> returns two values, | |
3794 | the smallest and largest supported widths for antialiased points. | |
3795 | See <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>. | |
3796 | </para> | |
3797 | </listitem> | |
3798 | </varlistentry> | |
3799 | <varlistentry> | |
3800 | <term><constant>GL_SMOOTH_POINT_SIZE_GRANULARITY</constant></term> | |
3801 | <listitem> | |
3802 | <para> | |
3803 | </para> | |
3804 | <para> | |
3805 | <parameter>params</parameter> returns one value, | |
3806 | the granularity of sizes for antialiased points. | |
3807 | See <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>. | |
3808 | </para> | |
3809 | </listitem> | |
3810 | </varlistentry> | |
3811 | <varlistentry> | |
3812 | <term><constant>GL_STENCIL_BACK_FAIL</constant></term> | |
3813 | <listitem> | |
3814 | <para> | |
3815 | </para> | |
3816 | <para> | |
3817 | <parameter>params</parameter> returns one value, | |
3818 | a symbolic constant indicating what action is taken for back-facing polygons when the stencil | |
3819 | test fails. The initial value is <constant>GL_KEEP</constant>. | |
3820 | See <citerefentry><refentrytitle>glStencilOpSeparate</refentrytitle></citerefentry>. | |
3821 | </para> | |
3822 | </listitem> | |
3823 | </varlistentry> | |
3824 | <varlistentry> | |
3825 | <term><constant>GL_STENCIL_BACK_FUNC</constant></term> | |
3826 | <listitem> | |
3827 | <para> | |
3828 | </para> | |
3829 | <para> | |
3830 | <parameter>params</parameter> returns one value, | |
3831 | a symbolic constant indicating what function is used for back-facing polygons to compare the | |
3832 | stencil reference value with the stencil buffer value. The initial value | |
3833 | is <constant>GL_ALWAYS</constant>. | |
3834 | See <citerefentry><refentrytitle>glStencilFuncSeparate</refentrytitle></citerefentry>. | |
3835 | </para> | |
3836 | </listitem> | |
3837 | </varlistentry> | |
3838 | <varlistentry> | |
3839 | <term><constant>GL_STENCIL_BACK_PASS_DEPTH_FAIL</constant></term> | |
3840 | <listitem> | |
3841 | <para> | |
3842 | </para> | |
3843 | <para> | |
3844 | <parameter>params</parameter> returns one value, | |
3845 | a symbolic constant indicating what action is taken for back-facing polygons when the stencil | |
3846 | test passes, | |
3847 | but the depth test fails. The initial value is <constant>GL_KEEP</constant>. | |
3848 | See <citerefentry><refentrytitle>glStencilOpSeparate</refentrytitle></citerefentry>. | |
3849 | </para> | |
3850 | </listitem> | |
3851 | </varlistentry> | |
3852 | <varlistentry> | |
3853 | <term><constant>GL_STENCIL_BACK_PASS_DEPTH_PASS</constant></term> | |
3854 | <listitem> | |
3855 | <para> | |
3856 | </para> | |
3857 | <para> | |
3858 | <parameter>params</parameter> returns one value, | |
3859 | a symbolic constant indicating what action is taken for back-facing polygons when the stencil | |
3860 | test passes and the depth test passes. The initial value is <constant>GL_KEEP</constant>. | |
3861 | See <citerefentry><refentrytitle>glStencilOpSeparate</refentrytitle></citerefentry>. | |
3862 | </para> | |
3863 | </listitem> | |
3864 | </varlistentry> | |
3865 | <varlistentry> | |
3866 | <term><constant>GL_STENCIL_BACK_REF</constant></term> | |
3867 | <listitem> | |
3868 | <para> | |
3869 | </para> | |
3870 | <para> | |
3871 | <parameter>params</parameter> returns one value, | |
3872 | the reference value that is compared with the contents of the stencil | |
3873 | buffer for back-facing polygons. The initial value is 0. | |
3874 | See <citerefentry><refentrytitle>glStencilFuncSeparate</refentrytitle></citerefentry>. | |
3875 | </para> | |
3876 | </listitem> | |
3877 | </varlistentry> | |
3878 | <varlistentry> | |
3879 | <term><constant>GL_STENCIL_BACK_VALUE_MASK</constant></term> | |
3880 | <listitem> | |
3881 | <para> | |
3882 | </para> | |
3883 | <para> | |
3884 | <parameter>params</parameter> returns one value, | |
3885 | the mask that is used for back-facing polygons to mask both the stencil reference value and the | |
3886 | stencil buffer value before they are compared. The initial value is all 1's. | |
3887 | See <citerefentry><refentrytitle>glStencilFuncSeparate</refentrytitle></citerefentry>. | |
3888 | </para> | |
3889 | </listitem> | |
3890 | </varlistentry> | |
3891 | <varlistentry> | |
3892 | <term><constant>GL_STENCIL_BACK_WRITEMASK</constant></term> | |
3893 | <listitem> | |
3894 | <para> | |
3895 | </para> | |
3896 | <para> | |
3897 | <parameter>params</parameter> returns one value, | |
3898 | the mask that controls writing of the stencil bitplanes for back-facing polygons. The initial value | |
3899 | is all 1's. | |
3900 | See <citerefentry><refentrytitle>glStencilMaskSeparate</refentrytitle></citerefentry>. | |
3901 | </para> | |
3902 | </listitem> | |
3903 | </varlistentry> | |
3904 | <varlistentry> | |
3905 | <term><constant>GL_STENCIL_BITS</constant></term> | |
3906 | <listitem> | |
3907 | <para> | |
3908 | </para> | |
3909 | <para> | |
3910 | <parameter>params</parameter> returns one value, | |
3911 | the number of bitplanes in the stencil buffer. | |
3912 | </para> | |
3913 | </listitem> | |
3914 | </varlistentry> | |
3915 | <varlistentry> | |
3916 | <term><constant>GL_STENCIL_CLEAR_VALUE</constant></term> | |
3917 | <listitem> | |
3918 | <para> | |
3919 | </para> | |
3920 | <para> | |
3921 | <parameter>params</parameter> returns one value, | |
3922 | the index to which the stencil bitplanes are cleared. The initial value is | |
3923 | 0. | |
3924 | See <citerefentry><refentrytitle>glClearStencil</refentrytitle></citerefentry>. | |
3925 | </para> | |
3926 | </listitem> | |
3927 | </varlistentry> | |
3928 | <varlistentry> | |
3929 | <term><constant>GL_STENCIL_FAIL</constant></term> | |
3930 | <listitem> | |
3931 | <para> | |
3932 | </para> | |
3933 | <para> | |
3934 | <parameter>params</parameter> returns one value, | |
3935 | a symbolic constant indicating what action is taken when the stencil | |
3936 | test fails. The initial value is <constant>GL_KEEP</constant>. | |
3937 | See <citerefentry><refentrytitle>glStencilOp</refentrytitle></citerefentry>. | |
3938 | If the GL version is 2.0 or greater, this stencil state only affects non-polygons | |
3939 | and front-facing polygons. Back-facing polygons use separate stencil state. | |
3940 | See <citerefentry><refentrytitle>glStencilOpSeparate</refentrytitle></citerefentry>. | |
3941 | </para> | |
3942 | </listitem> | |
3943 | </varlistentry> | |
3944 | <varlistentry> | |
3945 | <term><constant>GL_STENCIL_FUNC</constant></term> | |
3946 | <listitem> | |
3947 | <para> | |
3948 | </para> | |
3949 | <para> | |
3950 | <parameter>params</parameter> returns one value, | |
3951 | a symbolic constant indicating what function is used to compare the | |
3952 | stencil reference value with the stencil buffer value. The initial value | |
3953 | is <constant>GL_ALWAYS</constant>. | |
3954 | See <citerefentry><refentrytitle>glStencilFunc</refentrytitle></citerefentry>. | |
3955 | If the GL version is 2.0 or greater, this stencil state only affects non-polygons | |
3956 | and front-facing polygons. Back-facing polygons use separate stencil state. | |
3957 | See <citerefentry><refentrytitle>glStencilFuncSeparate</refentrytitle></citerefentry>. | |
3958 | </para> | |
3959 | </listitem> | |
3960 | </varlistentry> | |
3961 | <varlistentry> | |
3962 | <term><constant>GL_STENCIL_PASS_DEPTH_FAIL</constant></term> | |
3963 | <listitem> | |
3964 | <para> | |
3965 | </para> | |
3966 | <para> | |
3967 | <parameter>params</parameter> returns one value, | |
3968 | a symbolic constant indicating what action is taken when the stencil | |
3969 | test passes, | |
3970 | but the depth test fails. The initial value is <constant>GL_KEEP</constant>. | |
3971 | See <citerefentry><refentrytitle>glStencilOp</refentrytitle></citerefentry>. | |
3972 | If the GL version is 2.0 or greater, this stencil state only affects non-polygons | |
3973 | and front-facing polygons. Back-facing polygons use separate stencil state. | |
3974 | See <citerefentry><refentrytitle>glStencilOpSeparate</refentrytitle></citerefentry>. | |
3975 | </para> | |
3976 | </listitem> | |
3977 | </varlistentry> | |
3978 | <varlistentry> | |
3979 | <term><constant>GL_STENCIL_PASS_DEPTH_PASS</constant></term> | |
3980 | <listitem> | |
3981 | <para> | |
3982 | </para> | |
3983 | <para> | |
3984 | <parameter>params</parameter> returns one value, | |
3985 | a symbolic constant indicating what action is taken when the stencil | |
3986 | test passes and the depth test passes. The initial value is <constant>GL_KEEP</constant>. | |
3987 | See <citerefentry><refentrytitle>glStencilOp</refentrytitle></citerefentry>. | |
3988 | If the GL version is 2.0 or greater, this stencil state only affects non-polygons | |
3989 | and front-facing polygons. Back-facing polygons use separate stencil state. | |
3990 | See <citerefentry><refentrytitle>glStencilOpSeparate</refentrytitle></citerefentry>. | |
3991 | </para> | |
3992 | </listitem> | |
3993 | </varlistentry> | |
3994 | <varlistentry> | |
3995 | <term><constant>GL_STENCIL_REF</constant></term> | |
3996 | <listitem> | |
3997 | <para> | |
3998 | </para> | |
3999 | <para> | |
4000 | <parameter>params</parameter> returns one value, | |
4001 | the reference value that is compared with the contents of the stencil | |
4002 | buffer. The initial value is 0. | |
4003 | See <citerefentry><refentrytitle>glStencilFunc</refentrytitle></citerefentry>. | |
4004 | If the GL version is 2.0 or greater, this stencil state only affects non-polygons | |
4005 | and front-facing polygons. Back-facing polygons use separate stencil state. | |
4006 | See <citerefentry><refentrytitle>glStencilFuncSeparate</refentrytitle></citerefentry>. | |
4007 | </para> | |
4008 | </listitem> | |
4009 | </varlistentry> | |
4010 | <varlistentry> | |
4011 | <term><constant>GL_STENCIL_TEST</constant></term> | |
4012 | <listitem> | |
4013 | <para> | |
4014 | </para> | |
4015 | <para> | |
4016 | <parameter>params</parameter> returns a single boolean value indicating whether stencil testing | |
4017 | of fragments is enabled. The initial value is <constant>GL_FALSE</constant>. | |
4018 | See <citerefentry><refentrytitle>glStencilFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glStencilOp</refentrytitle></citerefentry>. | |
4019 | </para> | |
4020 | </listitem> | |
4021 | </varlistentry> | |
4022 | <varlistentry> | |
4023 | <term><constant>GL_STENCIL_VALUE_MASK</constant></term> | |
4024 | <listitem> | |
4025 | <para> | |
4026 | </para> | |
4027 | <para> | |
4028 | <parameter>params</parameter> returns one value, | |
4029 | the mask that is used to mask both the stencil reference value and the | |
4030 | stencil buffer value before they are compared. The initial value is all 1's. | |
4031 | See <citerefentry><refentrytitle>glStencilFunc</refentrytitle></citerefentry>. | |
4032 | If the GL version is 2.0 or greater, this stencil state only affects non-polygons | |
4033 | and front-facing polygons. Back-facing polygons use separate stencil state. | |
4034 | See <citerefentry><refentrytitle>glStencilFuncSeparate</refentrytitle></citerefentry>. | |
4035 | </para> | |
4036 | </listitem> | |
4037 | </varlistentry> | |
4038 | <varlistentry> | |
4039 | <term><constant>GL_STENCIL_WRITEMASK</constant></term> | |
4040 | <listitem> | |
4041 | <para> | |
4042 | </para> | |
4043 | <para> | |
4044 | <parameter>params</parameter> returns one value, | |
4045 | the mask that controls writing of the stencil bitplanes. The initial value | |
4046 | is all 1's. | |
4047 | See <citerefentry><refentrytitle>glStencilMask</refentrytitle></citerefentry>. | |
4048 | If the GL version is 2.0 or greater, this stencil state only affects non-polygons | |
4049 | and front-facing polygons. Back-facing polygons use separate stencil state. | |
4050 | See <citerefentry><refentrytitle>glStencilMaskSeparate</refentrytitle></citerefentry>. | |
4051 | </para> | |
4052 | </listitem> | |
4053 | </varlistentry> | |
4054 | <varlistentry> | |
4055 | <term><constant>GL_STEREO</constant></term> | |
4056 | <listitem> | |
4057 | <para> | |
4058 | </para> | |
4059 | <para> | |
4060 | <parameter>params</parameter> returns a single boolean value indicating whether stereo buffers | |
4061 | (left and right) are supported. | |
4062 | </para> | |
4063 | </listitem> | |
4064 | </varlistentry> | |
4065 | <varlistentry> | |
4066 | <term><constant>GL_SUBPIXEL_BITS</constant></term> | |
4067 | <listitem> | |
4068 | <para> | |
4069 | </para> | |
4070 | <para> | |
4071 | <parameter>params</parameter> returns one value, | |
4072 | an estimate of the number of bits of subpixel resolution that are used to | |
4073 | position rasterized geometry in window coordinates. The value must be at least 4. | |
4074 | </para> | |
4075 | </listitem> | |
4076 | </varlistentry> | |
4077 | <varlistentry> | |
4078 | <term><constant>GL_TEXTURE_1D</constant></term> | |
4079 | <listitem> | |
4080 | <para> | |
4081 | </para> | |
4082 | <para> | |
4083 | <parameter>params</parameter> returns a single boolean value indicating whether 1D texture | |
4084 | mapping is enabled. The initial value is <constant>GL_FALSE</constant>. | |
4085 | See <citerefentry><refentrytitle>glTexImage1D</refentrytitle></citerefentry>. | |
4086 | </para> | |
4087 | </listitem> | |
4088 | </varlistentry> | |
4089 | <varlistentry> | |
4090 | <term><constant>GL_TEXTURE_BINDING_1D</constant></term> | |
4091 | <listitem> | |
4092 | <para> | |
4093 | </para> | |
4094 | <para> | |
4095 | <parameter>params</parameter> returns a single value, the name of the texture | |
4096 | currently bound to the target <constant>GL_TEXTURE_1D</constant>. The initial value is 0. | |
4097 | See <citerefentry><refentrytitle>glBindTexture</refentrytitle></citerefentry>. | |
4098 | </para> | |
4099 | </listitem> | |
4100 | </varlistentry> | |
4101 | <varlistentry> | |
4102 | <term><constant>GL_TEXTURE_2D</constant></term> | |
4103 | <listitem> | |
4104 | <para> | |
4105 | </para> | |
4106 | <para> | |
4107 | <parameter>params</parameter> returns a single boolean value indicating whether 2D texture | |
4108 | mapping is enabled. The initial value is <constant>GL_FALSE</constant>. | |
4109 | See <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>. | |
4110 | </para> | |
4111 | </listitem> | |
4112 | </varlistentry> | |
4113 | <varlistentry> | |
4114 | <term><constant>GL_TEXTURE_BINDING_2D</constant></term> | |
4115 | <listitem> | |
4116 | <para> | |
4117 | </para> | |
4118 | <para> | |
4119 | <parameter>params</parameter> returns a single value, the name of the texture | |
4120 | currently bound to the target <constant>GL_TEXTURE_2D</constant>. The initial value is 0. | |
4121 | See <citerefentry><refentrytitle>glBindTexture</refentrytitle></citerefentry>. | |
4122 | </para> | |
4123 | </listitem> | |
4124 | </varlistentry> | |
4125 | <varlistentry> | |
4126 | <term><constant>GL_TEXTURE_3D</constant></term> | |
4127 | <listitem> | |
4128 | <para> | |
4129 | </para> | |
4130 | <para> | |
4131 | <parameter>params</parameter> returns a single boolean value indicating whether 3D texture | |
4132 | mapping is enabled. The initial value is <constant>GL_FALSE</constant>. | |
4133 | See <citerefentry><refentrytitle>glTexImage3D</refentrytitle></citerefentry>. | |
4134 | </para> | |
4135 | </listitem> | |
4136 | </varlistentry> | |
4137 | <varlistentry> | |
4138 | <term><constant>GL_TEXTURE_BINDING_3D</constant></term> | |
4139 | <listitem> | |
4140 | <para> | |
4141 | </para> | |
4142 | <para> | |
4143 | <parameter>params</parameter> returns a single value, the name of the texture | |
4144 | currently bound to the target <constant>GL_TEXTURE_3D</constant>. The initial value is 0. | |
4145 | See <citerefentry><refentrytitle>glBindTexture</refentrytitle></citerefentry>. | |
4146 | </para> | |
4147 | </listitem> | |
4148 | </varlistentry> | |
4149 | <varlistentry> | |
4150 | <term><constant>GL_TEXTURE_BINDING_CUBE_MAP</constant></term> | |
4151 | <listitem> | |
4152 | <para> | |
4153 | </para> | |
4154 | <para> | |
4155 | <parameter>params</parameter> returns a single value, the name of the texture | |
4156 | currently bound to the target <constant>GL_TEXTURE_CUBE_MAP</constant>. The initial value is 0. | |
4157 | See <citerefentry><refentrytitle>glBindTexture</refentrytitle></citerefentry>. | |
4158 | </para> | |
4159 | </listitem> | |
4160 | </varlistentry> | |
4161 | <varlistentry> | |
4162 | <term><constant>GL_TEXTURE_COMPRESSION_HINT</constant></term> | |
4163 | <listitem> | |
4164 | <para> | |
4165 | </para> | |
4166 | <para> | |
4167 | <parameter>params</parameter> returns a single value indicating the mode of the texture | |
4168 | compression hint. The initial value is <constant>GL_DONT_CARE</constant>. | |
4169 | </para> | |
4170 | </listitem> | |
4171 | </varlistentry> | |
4172 | <varlistentry> | |
4173 | <term><constant>GL_TEXTURE_COORD_ARRAY</constant></term> | |
4174 | <listitem> | |
4175 | <para> | |
4176 | </para> | |
4177 | <para> | |
4178 | <parameter>params</parameter> returns a single boolean value indicating whether the texture | |
4179 | coordinate array is enabled. The initial value is <constant>GL_FALSE</constant>. | |
4180 | See <citerefentry><refentrytitle>glTexCoordPointer</refentrytitle></citerefentry>. | |
4181 | </para> | |
4182 | </listitem> | |
4183 | </varlistentry> | |
4184 | <varlistentry> | |
4185 | <term><constant>GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING</constant></term> | |
4186 | <listitem> | |
4187 | <para> | |
4188 | </para> | |
4189 | <para> | |
4190 | <parameter>params</parameter> returns a single value, the name of the buffer object | |
4191 | associated with the texture coordinate array. This buffer object would have been bound to the | |
4192 | target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to | |
4193 | <citerefentry><refentrytitle>glTexCoordPointer</refentrytitle></citerefentry>. | |
4194 | If no buffer object was bound to this target, 0 is returned. The initial value is 0. | |
4195 | See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>. | |
4196 | </para> | |
4197 | </listitem> | |
4198 | </varlistentry> | |
4199 | <varlistentry> | |
4200 | <term><constant>GL_TEXTURE_COORD_ARRAY_SIZE</constant></term> | |
4201 | <listitem> | |
4202 | <para> | |
4203 | </para> | |
4204 | <para> | |
4205 | <parameter>params</parameter> returns one value, | |
4206 | the number of coordinates per element in the texture coordinate | |
4207 | array. The initial value is 4. | |
4208 | See <citerefentry><refentrytitle>glTexCoordPointer</refentrytitle></citerefentry>. | |
4209 | </para> | |
4210 | </listitem> | |
4211 | </varlistentry> | |
4212 | <varlistentry> | |
4213 | <term><constant>GL_TEXTURE_COORD_ARRAY_STRIDE</constant></term> | |
4214 | <listitem> | |
4215 | <para> | |
4216 | </para> | |
4217 | <para> | |
4218 | <parameter>params</parameter> returns one value, | |
4219 | the byte offset between consecutive elements in the texture coordinate | |
4220 | array. The initial value is 0. | |
4221 | See <citerefentry><refentrytitle>glTexCoordPointer</refentrytitle></citerefentry>. | |
4222 | </para> | |
4223 | </listitem> | |
4224 | </varlistentry> | |
4225 | <varlistentry> | |
4226 | <term><constant>GL_TEXTURE_COORD_ARRAY_TYPE</constant></term> | |
4227 | <listitem> | |
4228 | <para> | |
4229 | </para> | |
4230 | <para> | |
4231 | <parameter>params</parameter> returns one value, | |
4232 | the data type of the coordinates in the texture coordinate | |
4233 | array. The initial value is <constant>GL_FLOAT</constant>. | |
4234 | See <citerefentry><refentrytitle>glTexCoordPointer</refentrytitle></citerefentry>. | |
4235 | </para> | |
4236 | </listitem> | |
4237 | </varlistentry> | |
4238 | <varlistentry> | |
4239 | <term><constant>GL_TEXTURE_CUBE_MAP</constant></term> | |
4240 | <listitem> | |
4241 | <para> | |
4242 | </para> | |
4243 | <para> | |
4244 | <parameter>params</parameter> returns a single boolean value indicating whether cube-mapped texture | |
4245 | mapping is enabled. The initial value is <constant>GL_FALSE</constant>. | |
4246 | See <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>. | |
4247 | </para> | |
4248 | </listitem> | |
4249 | </varlistentry> | |
4250 | <varlistentry> | |
4251 | <term><constant>GL_TEXTURE_GEN_Q</constant></term> | |
4252 | <listitem> | |
4253 | <para> | |
4254 | </para> | |
4255 | <para> | |
4256 | <parameter>params</parameter> returns a single boolean value indicating whether automatic generation | |
4257 | of the <emphasis>q</emphasis> texture coordinate is enabled. The initial value is <constant>GL_FALSE</constant>. | |
4258 | See <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>. | |
4259 | </para> | |
4260 | </listitem> | |
4261 | </varlistentry> | |
4262 | <varlistentry> | |
4263 | <term><constant>GL_TEXTURE_GEN_R</constant></term> | |
4264 | <listitem> | |
4265 | <para> | |
4266 | </para> | |
4267 | <para> | |
4268 | <parameter>params</parameter> returns a single boolean value indicating whether automatic generation | |
4269 | of the <emphasis>r</emphasis> texture coordinate is enabled. The initial value is <constant>GL_FALSE</constant>. | |
4270 | See <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>. | |
4271 | </para> | |
4272 | </listitem> | |
4273 | </varlistentry> | |
4274 | <varlistentry> | |
4275 | <term><constant>GL_TEXTURE_GEN_S</constant></term> | |
4276 | <listitem> | |
4277 | <para> | |
4278 | </para> | |
4279 | <para> | |
4280 | <parameter>params</parameter> returns a single boolean value indicating whether automatic generation | |
4281 | of the <emphasis>S</emphasis> texture coordinate is enabled. The initial value is <constant>GL_FALSE</constant>. | |
4282 | See <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>. | |
4283 | </para> | |
4284 | </listitem> | |
4285 | </varlistentry> | |
4286 | <varlistentry> | |
4287 | <term><constant>GL_TEXTURE_GEN_T</constant></term> | |
4288 | <listitem> | |
4289 | <para> | |
4290 | </para> | |
4291 | <para> | |
4292 | <parameter>params</parameter> returns a single boolean value indicating whether automatic generation | |
4293 | of the T texture coordinate is enabled. The initial value is <constant>GL_FALSE</constant>. | |
4294 | See <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>. | |
4295 | </para> | |
4296 | </listitem> | |
4297 | </varlistentry> | |
4298 | <varlistentry> | |
4299 | <term><constant>GL_TEXTURE_MATRIX</constant></term> | |
4300 | <listitem> | |
4301 | <para> | |
4302 | </para> | |
4303 | <para> | |
4304 | <parameter>params</parameter> returns sixteen values: | |
4305 | the texture matrix on the top of the texture matrix stack. Initially this | |
4306 | matrix is the identity matrix. | |
4307 | See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>. | |
4308 | </para> | |
4309 | </listitem> | |
4310 | </varlistentry> | |
4311 | <varlistentry> | |
4312 | <term><constant>GL_TEXTURE_STACK_DEPTH</constant></term> | |
4313 | <listitem> | |
4314 | <para> | |
4315 | </para> | |
4316 | <para> | |
4317 | <parameter>params</parameter> returns one value, | |
4318 | the number of matrices on the texture matrix stack. | |
4319 | The initial value is 1. | |
4320 | See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>. | |
4321 | </para> | |
4322 | </listitem> | |
4323 | </varlistentry> | |
4324 | <varlistentry> | |
4325 | <term><constant>GL_TRANSPOSE_COLOR_MATRIX</constant></term> | |
4326 | <listitem> | |
4327 | <para> | |
4328 | </para> | |
4329 | <para> | |
4330 | <parameter>params</parameter> returns 16 values, the elements of the color matrix in row-major | |
4331 | order. | |
4332 | See <citerefentry><refentrytitle>glLoadTransposeMatrix</refentrytitle></citerefentry>. | |
4333 | </para> | |
4334 | </listitem> | |
4335 | </varlistentry> | |
4336 | <varlistentry> | |
4337 | <term><constant>GL_TRANSPOSE_MODELVIEW_MATRIX</constant></term> | |
4338 | <listitem> | |
4339 | <para> | |
4340 | </para> | |
4341 | <para> | |
4342 | <parameter>params</parameter> returns 16 values, the elements of the modelview matrix in row-major | |
4343 | order. | |
4344 | See <citerefentry><refentrytitle>glLoadTransposeMatrix</refentrytitle></citerefentry>. | |
4345 | </para> | |
4346 | </listitem> | |
4347 | </varlistentry> | |
4348 | <varlistentry> | |
4349 | <term><constant>GL_TRANSPOSE_PROJECTION_MATRIX</constant></term> | |
4350 | <listitem> | |
4351 | <para> | |
4352 | </para> | |
4353 | <para> | |
4354 | <parameter>params</parameter> returns 16 values, the elements of the projection matrix in row-major | |
4355 | order. | |
4356 | See <citerefentry><refentrytitle>glLoadTransposeMatrix</refentrytitle></citerefentry>. | |
4357 | </para> | |
4358 | </listitem> | |
4359 | </varlistentry> | |
4360 | <varlistentry> | |
4361 | <term><constant>GL_TRANSPOSE_TEXTURE_MATRIX</constant></term> | |
4362 | <listitem> | |
4363 | <para> | |
4364 | </para> | |
4365 | <para> | |
4366 | <parameter>params</parameter> returns 16 values, the elements of the texture matrix in row-major | |
4367 | order. | |
4368 | See <citerefentry><refentrytitle>glLoadTransposeMatrix</refentrytitle></citerefentry>. | |
4369 | </para> | |
4370 | </listitem> | |
4371 | </varlistentry> | |
4372 | <varlistentry> | |
4373 | <term><constant>GL_UNPACK_ALIGNMENT</constant></term> | |
4374 | <listitem> | |
4375 | <para> | |
4376 | </para> | |
4377 | <para> | |
4378 | <parameter>params</parameter> returns one value, | |
4379 | the byte alignment used for reading pixel data from memory. The initial | |
4380 | value is 4. | |
4381 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
4382 | </para> | |
4383 | </listitem> | |
4384 | </varlistentry> | |
4385 | <varlistentry> | |
4386 | <term><constant>GL_UNPACK_IMAGE_HEIGHT</constant></term> | |
4387 | <listitem> | |
4388 | <para> | |
4389 | </para> | |
4390 | <para> | |
4391 | <parameter>params</parameter> returns one value, | |
4392 | the image height used for reading pixel data from memory. The initial | |
4393 | is 0. | |
4394 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
4395 | </para> | |
4396 | </listitem> | |
4397 | </varlistentry> | |
4398 | <varlistentry> | |
4399 | <term><constant>GL_UNPACK_LSB_FIRST</constant></term> | |
4400 | <listitem> | |
4401 | <para> | |
4402 | </para> | |
4403 | <para> | |
4404 | <parameter>params</parameter> returns a single boolean value indicating whether single-bit | |
4405 | pixels being read from memory are read first from the least significant | |
4406 | bit of each unsigned byte. The initial value is <constant>GL_FALSE</constant>. | |
4407 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
4408 | </para> | |
4409 | </listitem> | |
4410 | </varlistentry> | |
4411 | <varlistentry> | |
4412 | <term><constant>GL_UNPACK_ROW_LENGTH</constant></term> | |
4413 | <listitem> | |
4414 | <para> | |
4415 | </para> | |
4416 | <para> | |
4417 | <parameter>params</parameter> returns one value, | |
4418 | the row length used for reading pixel data from memory. The initial value | |
4419 | is 0. | |
4420 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
4421 | </para> | |
4422 | </listitem> | |
4423 | </varlistentry> | |
4424 | <varlistentry> | |
4425 | <term><constant>GL_UNPACK_SKIP_IMAGES</constant></term> | |
4426 | <listitem> | |
4427 | <para> | |
4428 | </para> | |
4429 | <para> | |
4430 | <parameter>params</parameter> returns one value, | |
4431 | the number of pixel images skipped before the first pixel is read | |
4432 | from memory. The initial value is 0. | |
4433 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
4434 | </para> | |
4435 | </listitem> | |
4436 | </varlistentry> | |
4437 | <varlistentry> | |
4438 | <term><constant>GL_UNPACK_SKIP_PIXELS</constant></term> | |
4439 | <listitem> | |
4440 | <para> | |
4441 | </para> | |
4442 | <para> | |
4443 | <parameter>params</parameter> returns one value, | |
4444 | the number of pixel locations skipped before the first pixel is read | |
4445 | from memory. The initial value is 0. | |
4446 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
4447 | </para> | |
4448 | </listitem> | |
4449 | </varlistentry> | |
4450 | <varlistentry> | |
4451 | <term><constant>GL_UNPACK_SKIP_ROWS</constant></term> | |
4452 | <listitem> | |
4453 | <para> | |
4454 | </para> | |
4455 | <para> | |
4456 | <parameter>params</parameter> returns one value, | |
4457 | the number of rows of pixel locations skipped before the first pixel is read | |
4458 | from memory. The initial value is 0. | |
4459 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
4460 | </para> | |
4461 | </listitem> | |
4462 | </varlistentry> | |
4463 | <varlistentry> | |
4464 | <term><constant>GL_UNPACK_SWAP_BYTES</constant></term> | |
4465 | <listitem> | |
4466 | <para> | |
4467 | </para> | |
4468 | <para> | |
4469 | <parameter>params</parameter> returns a single boolean value indicating whether the bytes of | |
4470 | two-byte and four-byte pixel indices and components are swapped after being | |
4471 | read from memory. The initial value is <constant>GL_FALSE</constant>. | |
4472 | See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>. | |
4473 | </para> | |
4474 | </listitem> | |
4475 | </varlistentry> | |
4476 | <varlistentry> | |
4477 | <term><constant>GL_VERTEX_ARRAY</constant></term> | |
4478 | <listitem> | |
4479 | <para> | |
4480 | </para> | |
4481 | <para> | |
4482 | <parameter>params</parameter> returns a single boolean value indicating whether the vertex | |
4483 | array is enabled. The initial value is <constant>GL_FALSE</constant>. | |
4484 | See <citerefentry><refentrytitle>glVertexPointer</refentrytitle></citerefentry>. | |
4485 | </para> | |
4486 | </listitem> | |
4487 | </varlistentry> | |
4488 | <varlistentry> | |
4489 | <term><constant>GL_VERTEX_ARRAY_BUFFER_BINDING</constant></term> | |
4490 | <listitem> | |
4491 | <para> | |
4492 | </para> | |
4493 | <para> | |
4494 | <parameter>params</parameter> returns a single value, the name of the buffer object | |
4495 | associated with the vertex array. This buffer object would have been bound to the | |
4496 | target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to | |
4497 | <citerefentry><refentrytitle>glVertexPointer</refentrytitle></citerefentry>. | |
4498 | If no buffer object was bound to this target, 0 is returned. The initial value is 0. | |
4499 | See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>. | |
4500 | </para> | |
4501 | </listitem> | |
4502 | </varlistentry> | |
4503 | <varlistentry> | |
4504 | <term><constant>GL_VERTEX_ARRAY_SIZE</constant></term> | |
4505 | <listitem> | |
4506 | <para> | |
4507 | </para> | |
4508 | <para> | |
4509 | <parameter>params</parameter> returns one value, | |
4510 | the number of coordinates per vertex in the vertex array. The initial | |
4511 | value is 4. | |
4512 | See <citerefentry><refentrytitle>glVertexPointer</refentrytitle></citerefentry>. | |
4513 | </para> | |
4514 | </listitem> | |
4515 | </varlistentry> | |
4516 | <varlistentry> | |
4517 | <term><constant>GL_VERTEX_ARRAY_STRIDE</constant></term> | |
4518 | <listitem> | |
4519 | <para> | |
4520 | </para> | |
4521 | <para> | |
4522 | <parameter>params</parameter> returns one value, | |
4523 | the byte offset between consecutive vertices in the vertex | |
4524 | array. The initial value is 0. | |
4525 | See <citerefentry><refentrytitle>glVertexPointer</refentrytitle></citerefentry>. | |
4526 | </para> | |
4527 | </listitem> | |
4528 | </varlistentry> | |
4529 | <varlistentry> | |
4530 | <term><constant>GL_VERTEX_ARRAY_TYPE</constant></term> | |
4531 | <listitem> | |
4532 | <para> | |
4533 | </para> | |
4534 | <para> | |
4535 | <parameter>params</parameter> returns one value, | |
4536 | the data type of each coordinate in the vertex array. The initial value is | |
4537 | <constant>GL_FLOAT</constant>. | |
4538 | See <citerefentry><refentrytitle>glVertexPointer</refentrytitle></citerefentry>. | |
4539 | </para> | |
4540 | </listitem> | |
4541 | </varlistentry> | |
4542 | <varlistentry> | |
4543 | <term><constant>GL_VERTEX_PROGRAM_POINT_SIZE</constant></term> | |
4544 | <listitem> | |
4545 | <para> | |
4546 | </para> | |
4547 | <para> | |
4548 | <parameter>params</parameter> returns a single boolean value indicating whether vertex | |
4549 | program point size mode is enabled. If enabled, and a vertex shader is active, then the | |
4550 | point size is taken from the shader built-in <code>gl_PointSize</code>. If disabled, | |
4551 | and a vertex shader is active, then the point size is taken from the point state as specified | |
4552 | by <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>. | |
4553 | The initial value is <constant>GL_FALSE</constant>. | |
4554 | </para> | |
4555 | </listitem> | |
4556 | </varlistentry> | |
4557 | <varlistentry> | |
4558 | <term><constant>GL_VERTEX_PROGRAM_TWO_SIDE</constant></term> | |
4559 | <listitem> | |
4560 | <para> | |
4561 | </para> | |
4562 | <para> | |
4563 | <parameter>params</parameter> returns a single boolean value indicating whether vertex | |
4564 | program two-sided color mode is enabled. If enabled, and a vertex shader is active, then the | |
4565 | GL chooses the back color output for back-facing polygons, and the front color output for | |
4566 | non-polygons and front-facing polygons. If disabled, and a vertex shader is active, then the | |
4567 | front color output is always selected. The initial value is <constant>GL_FALSE</constant>. | |
4568 | </para> | |
4569 | </listitem> | |
4570 | </varlistentry> | |
4571 | <varlistentry> | |
4572 | <term><constant>GL_VIEWPORT</constant></term> | |
4573 | <listitem> | |
4574 | <para> | |
4575 | </para> | |
4576 | <para> | |
4577 | <parameter>params</parameter> returns four values: | |
4578 | the | |
4579 | <inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation> | |
4580 | and | |
4581 | <inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation> | |
4582 | window coordinates of the viewport, | |
4583 | followed by its width and height. | |
4584 | Initially the | |
4585 | <inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation> | |
4586 | and | |
4587 | <inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation> | |
4588 | window coordinates are both set to 0, | |
4589 | and the width and height are set to the width and height of the window into | |
4590 | which the GL will do its rendering. | |
4591 | See <citerefentry><refentrytitle>glViewport</refentrytitle></citerefentry>. | |
4592 | </para> | |
4593 | </listitem> | |
4594 | </varlistentry> | |
4595 | <varlistentry> | |
4596 | <term><constant>GL_ZOOM_X</constant></term> | |
4597 | <listitem> | |
4598 | <para> | |
4599 | </para> | |
4600 | <para> | |
4601 | <parameter>params</parameter> returns one value, | |
4602 | the | |
4603 | <inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation> | |
4604 | pixel zoom factor. The initial value is 1. | |
4605 | See <citerefentry><refentrytitle>glPixelZoom</refentrytitle></citerefentry>. | |
4606 | </para> | |
4607 | </listitem> | |
4608 | </varlistentry> | |
4609 | <varlistentry> | |
4610 | <term><constant>GL_ZOOM_Y</constant></term> | |
4611 | <listitem> | |
4612 | <para> | |
4613 | </para> | |
4614 | <para> | |
4615 | <parameter>params</parameter> returns one value, | |
4616 | the | |
4617 | <inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation> | |
4618 | pixel zoom factor. The initial value is 1. | |
4619 | See <citerefentry><refentrytitle>glPixelZoom</refentrytitle></citerefentry>. | |
4620 | </para> | |
4621 | </listitem> | |
4622 | </varlistentry> | |
4623 | </variablelist> | |
4624 | <para> | |
4625 | Many of the boolean parameters can also be queried more easily using | |
4626 | <citerefentry><refentrytitle>glIsEnabled</refentrytitle></citerefentry>. | |
4627 | </para> | |
4628 | </refsect1> | |
4629 | <refsect1 id="notes"><title>Notes</title> | |
4630 | <para> | |
4631 | <constant>GL_COLOR_LOGIC_OP</constant>, | |
4632 | <constant>GL_COLOR_ARRAY</constant>, | |
4633 | <constant>GL_COLOR_ARRAY_SIZE</constant>, | |
4634 | <constant>GL_COLOR_ARRAY_STRIDE</constant>, | |
4635 | <constant>GL_COLOR_ARRAY_TYPE</constant>, | |
4636 | <constant>GL_EDGE_FLAG_ARRAY</constant>, | |
4637 | <constant>GL_EDGE_FLAG_ARRAY_STRIDE</constant>, | |
4638 | <constant>GL_INDEX_ARRAY</constant>, | |
4639 | <constant>GL_INDEX_ARRAY_STRIDE</constant>, | |
4640 | <constant>GL_INDEX_ARRAY_TYPE</constant>, | |
4641 | <constant>GL_INDEX_LOGIC_OP</constant>, | |
4642 | <constant>GL_NORMAL_ARRAY</constant>, | |
4643 | <constant>GL_NORMAL_ARRAY_STRIDE</constant>, | |
4644 | <constant>GL_NORMAL_ARRAY_TYPE</constant>, | |
4645 | <constant>GL_POLYGON_OFFSET_UNITS</constant>, | |
4646 | <constant>GL_POLYGON_OFFSET_FACTOR</constant>, | |
4647 | <constant>GL_POLYGON_OFFSET_FILL</constant>, | |
4648 | <constant>GL_POLYGON_OFFSET_LINE</constant>, | |
4649 | <constant>GL_POLYGON_OFFSET_POINT</constant>, | |
4650 | <constant>GL_TEXTURE_COORD_ARRAY</constant>, | |
4651 | <constant>GL_TEXTURE_COORD_ARRAY_SIZE</constant>, | |
4652 | <constant>GL_TEXTURE_COORD_ARRAY_STRIDE</constant>, | |
4653 | <constant>GL_TEXTURE_COORD_ARRAY_TYPE</constant>, | |
4654 | <constant>GL_VERTEX_ARRAY</constant>, | |
4655 | <constant>GL_VERTEX_ARRAY_SIZE</constant>, | |
4656 | <constant>GL_VERTEX_ARRAY_STRIDE</constant>, and | |
4657 | <constant>GL_VERTEX_ARRAY_TYPE</constant> | |
4658 | are available only if the GL version is 1.1 or greater. | |
4659 | </para> | |
4660 | <para> | |
4661 | <constant>GL_ALIASED_POINT_SIZE_RANGE</constant>, | |
4662 | <constant>GL_FEEDBACK_BUFFER_SIZE</constant>, | |
4663 | <constant>GL_FEEDBACK_BUFFER_TYPE</constant>, | |
4664 | <constant>GL_LIGHT_MODEL_AMBIENT</constant>, | |
4665 | <constant>GL_LIGHT_MODEL_COLOR_CONTROL</constant>, | |
4666 | <constant>GL_MAX_3D_TEXTURE_SIZE</constant>, | |
4667 | <constant>GL_MAX_ELEMENTS_INDICES</constant>, | |
4668 | <constant>GL_MAX_ELEMENTS_VERTICES</constant>, | |
4669 | <constant>GL_PACK_IMAGE_HEIGHT</constant>, | |
4670 | <constant>GL_PACK_SKIP_IMAGES</constant>, | |
4671 | <constant>GL_RESCALE_NORMAL</constant>, | |
4672 | <constant>GL_SELECTION_BUFFER_SIZE</constant>, | |
4673 | <constant>GL_SMOOTH_LINE_WIDTH_GRANULARITY</constant>, | |
4674 | <constant>GL_SMOOTH_LINE_WIDTH_RANGE</constant>, | |
4675 | <constant>GL_SMOOTH_POINT_SIZE_GRANULARITY</constant>, | |
4676 | <constant>GL_SMOOTH_POINT_SIZE_RANGE</constant>, | |
4677 | <constant>GL_TEXTURE_3D</constant>, | |
4678 | <constant>GL_TEXTURE_BINDING_3D</constant>, | |
4679 | <constant>GL_UNPACK_IMAGE_HEIGHT</constant>, and | |
4680 | <constant>GL_UNPACK_SKIP_IMAGES</constant> | |
4681 | are available only if the GL version is 1.2 or greater. | |
4682 | </para> | |
4683 | <para> | |
4684 | <constant>GL_COMPRESSED_TEXTURE_FORMATS</constant>, | |
4685 | <constant>GL_NUM_COMPRESSED_TEXTURE_FORMATS</constant>, | |
4686 | <constant>GL_TEXTURE_BINDING_CUBE_MAP</constant>, and | |
4687 | <constant>GL_TEXTURE_COMPRESSION_HINT</constant> | |
4688 | are available only if the GL version is 1.3 or greater. | |
4689 | </para> | |
4690 | <para> | |
4691 | <constant>GL_BLEND_DST_ALPHA</constant>, | |
4692 | <constant>GL_BLEND_DST_RGB</constant>, | |
4693 | <constant>GL_BLEND_SRC_ALPHA</constant>, | |
4694 | <constant>GL_BLEND_SRC_RGB</constant>, | |
4695 | <constant>GL_CURRENT_FOG_COORD</constant>, | |
4696 | <constant>GL_CURRENT_SECONDARY_COLOR</constant>, | |
4697 | <constant>GL_FOG_COORD_ARRAY_STRIDE</constant>, | |
4698 | <constant>GL_FOG_COORD_ARRAY_TYPE</constant>, | |
4699 | <constant>GL_FOG_COORD_SRC</constant>, | |
4700 | <constant>GL_MAX_TEXTURE_LOD_BIAS</constant>, | |
4701 | <constant>GL_POINT_SIZE_MIN</constant>, | |
4702 | <constant>GL_POINT_SIZE_MAX</constant>, | |
4703 | <constant>GL_POINT_FADE_THRESHOLD_SIZE</constant>, | |
4704 | <constant>GL_POINT_DISTANCE_ATTENUATION</constant>, | |
4705 | <constant>GL_SECONDARY_COLOR_ARRAY_SIZE</constant>, | |
4706 | <constant>GL_SECONDARY_COLOR_ARRAY_STRIDE</constant>, and | |
4707 | <constant>GL_SECONDARY_COLOR_ARRAY_TYPE</constant> | |
4708 | are available only if the GL version is 1.4 or greater. | |
4709 | </para> | |
4710 | <para> | |
4711 | <constant>GL_ARRAY_BUFFER_BINDING</constant>, | |
4712 | <constant>GL_COLOR_ARRAY_BUFFER_BINDING</constant>, | |
4713 | <constant>GL_EDGE_FLAG_ARRAY_BUFFER_BINDING</constant>, | |
4714 | <constant>GL_ELEMENT_ARRAY_BUFFER_BINDING</constant>, | |
4715 | <constant>GL_FOG_COORD_ARRAY_BUFFER_BINDING</constant>, | |
4716 | <constant>GL_INDEX_ARRAY_BUFFER_BINDING</constant>, | |
4717 | <constant>GL_NORMAL_ARRAY_BUFFER_BINDING</constant>, | |
4718 | <constant>GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING</constant>, | |
4719 | <constant>GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING</constant>, and | |
4720 | <constant>GL_VERTEX_ARRAY_BUFFER_BINDING</constant> | |
4721 | are available only if the GL version is 1.5 or greater. | |
4722 | </para> | |
4723 | <para> | |
4724 | <constant>GL_BLEND_EQUATION_ALPHA</constant>, | |
4725 | <constant>GL_BLEND_EQUATION_RGB</constant>, | |
4726 | <constant>GL_DRAW_BUFFER</constant><emphasis>i</emphasis>, | |
4727 | <constant>GL_FRAGMENT_SHADER_DERIVATIVE_HINT</constant>, | |
4728 | <constant>GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS</constant>, | |
4729 | <constant>GL_MAX_DRAW_BUFFERS</constant>, | |
4730 | <constant>GL_MAX_FRAGMENT_UNIFORM_COMPONENTS</constant>, | |
4731 | <constant>GL_MAX_TEXTURE_COORDS</constant>, | |
4732 | <constant>GL_MAX_TEXTURE_IMAGE_UNITS</constant>, | |
4733 | <constant>GL_MAX_VARYING_FLOATS</constant>, | |
4734 | <constant>GL_MAX_VERTEX_ATTRIBS</constant>, | |
4735 | <constant>GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS</constant>, | |
4736 | <constant>GL_MAX_VERTEX_UNIFORM_COMPONENTS</constant>, | |
4737 | <constant>GL_POINT_SPRITE</constant>, | |
4738 | <constant>GL_STENCIL_BACK_FAIL</constant>, | |
4739 | <constant>GL_STENCIL_BACK_FUNC</constant>, | |
4740 | <constant>GL_STENCIL_BACK_PASS_DEPTH_FAIL</constant>, | |
4741 | <constant>GL_STENCIL_BACK_PASS_DEPTH_PASS</constant>, | |
4742 | <constant>GL_STENCIL_BACK_REF</constant>, | |
4743 | <constant>GL_STENCIL_BACK_VALUE_MASK</constant>, | |
4744 | <constant>GL_STENCIL_BACK_WRITEMASK</constant>, | |
4745 | <constant>GL_VERTEX_PROGRAM_POINT_SIZE</constant>, and | |
4746 | <constant>GL_VERTEX_PROGRAM_TWO_SIDE</constant> | |
4747 | are available only if the GL version is 2.0 or greater. | |
4748 | </para> | |
4749 | <para> | |
4750 | <constant>GL_CURRENT_RASTER_SECONDARY_COLOR</constant>, | |
4751 | <constant>GL_PIXEL_PACK_BUFFER_BINDING</constant> and | |
4752 | <constant>GL_PIXEL_UNPACK_BUFFER_BINDING</constant> | |
4753 | are available only if the GL version is 2.1 or greater. | |
4754 | </para> | |
4755 | <para> | |
4756 | <constant>GL_LINE_WIDTH_GRANULARITY</constant> was deprecated in GL version 1.2. Its | |
4757 | functionality was replaced by <constant>GL_SMOOTH_LINE_WIDTH_GRANULARITY</constant>. | |
4758 | </para> | |
4759 | <para> | |
4760 | <constant>GL_LINE_WIDTH_RANGE</constant> was deprecated in GL version 1.2. Its | |
4761 | functionality was replaced by <constant>GL_SMOOTH_LINE_WIDTH_RANGE</constant>. | |
4762 | </para> | |
4763 | <para> | |
4764 | <constant>GL_POINT_SIZE_GRANULARITY</constant> was deprecated in GL version 1.2. Its | |
4765 | functionality was replaced by <constant>GL_SMOOTH_POINT_SIZE_GRANULARITY</constant>. | |
4766 | </para> | |
4767 | <para> | |
4768 | <constant>GL_POINT_SIZE_RANGE</constant> was deprecated in GL version 1.2. Its | |
4769 | functionality was replaced by <constant>GL_SMOOTH_POINT_SIZE_RANGE</constant>. | |
4770 | </para> | |
4771 | <para> | |
4772 | <constant>GL_BLEND_EQUATION</constant> was deprecated in GL version 2.0. Its | |
4773 | functionality was replaced by <constant>GL_BLEND_EQUATION_RGB</constant> and | |
4774 | <constant>GL_BLEND_EQUATION_ALPHA</constant>. | |
4775 | </para> | |
4776 | <para> | |
4777 | <constant>GL_COLOR_MATRIX</constant>, | |
4778 | <constant>GL_COLOR_MATRIX_STACK_DEPTH</constant>, | |
4779 | <constant>GL_COLOR_TABLE</constant>, | |
4780 | <constant>GL_CONVOLUTION_1D</constant>, | |
4781 | <constant>GL_CONVOLUTION_2D</constant>, | |
4782 | <constant>GL_HISTOGRAM</constant>, | |
4783 | <constant>GL_MAX_COLOR_MATRIX_STACK_DEPTH</constant>, | |
4784 | <constant>GL_MINMAX</constant>, | |
4785 | <constant>GL_POST_COLOR_MATRIX_COLOR_TABLE</constant>, | |
4786 | <constant>GL_POST_COLOR_MATRIX_RED_BIAS</constant>, | |
4787 | <constant>GL_POST_COLOR_MATRIX_GREEN_BIAS</constant>, | |
4788 | <constant>GL_POST_COLOR_MATRIX_BLUE_BIAS</constant>, | |
4789 | <constant>GL_POST_COLOR_MATRIX_ALPHA_BIAS</constant>, | |
4790 | <constant>GL_POST_COLOR_MATRIX_RED_SCALE</constant>, | |
4791 | <constant>GL_POST_COLOR_MATRIX_GREEN_SCALE</constant>, | |
4792 | <constant>GL_POST_COLOR_MATRIX_BLUE_SCALE</constant>, | |
4793 | <constant>GL_POST_COLOR_MATRIX_ALPHA_SCALE</constant>, | |
4794 | <constant>GL_POST_CONVOLUTION_COLOR_TABLE</constant>, | |
4795 | <constant>GL_POST_CONVOLUTION_RED_BIAS</constant>, | |
4796 | <constant>GL_POST_CONVOLUTION_GREEN_BIAS</constant>, | |
4797 | <constant>GL_POST_CONVOLUTION_BLUE_BIAS</constant>, | |
4798 | <constant>GL_POST_CONVOLUTION_ALPHA_BIAS</constant>, | |
4799 | <constant>GL_POST_CONVOLUTION_RED_SCALE</constant>, | |
4800 | <constant>GL_POST_CONVOLUTION_GREEN_SCALE</constant>, | |
4801 | <constant>GL_POST_CONVOLUTION_BLUE_SCALE</constant>, | |
4802 | <constant>GL_POST_CONVOLUTION_ALPHA_SCALE</constant>, and | |
4803 | <constant>GL_SEPARABLE_2D</constant> | |
4804 | are available only if <code>ARB_imaging</code> is returned from <function>glGet</function> | |
4805 | when called with the argument <constant>GL_EXTENSIONS</constant>. | |
4806 | </para> | |
4807 | <para> | |
4808 | When the <code>ARB_multitexture</code> extension is supported, or the GL version | |
4809 | is 1.3 or greater, the following | |
4810 | parameters return the associated value for the active texture unit: | |
4811 | <constant>GL_CURRENT_RASTER_TEXTURE_COORDS</constant>, | |
4812 | <constant>GL_TEXTURE_1D</constant>, <constant>GL_TEXTURE_BINDING_1D</constant>, | |
4813 | <constant>GL_TEXTURE_2D</constant>, <constant>GL_TEXTURE_BINDING_2D</constant>, | |
4814 | <constant>GL_TEXTURE_3D</constant>, <constant>GL_TEXTURE_BINDING_3D</constant>, | |
4815 | <constant>GL_TEXTURE_GEN_S</constant>, | |
4816 | <constant>GL_TEXTURE_GEN_T</constant>, | |
4817 | <constant>GL_TEXTURE_GEN_R</constant>, | |
4818 | <constant>GL_TEXTURE_GEN_Q</constant>, | |
4819 | <constant>GL_TEXTURE_MATRIX</constant>, and | |
4820 | <constant>GL_TEXTURE_STACK_DEPTH</constant>. | |
4821 | Likewise, the following parameters return the associated value for the | |
4822 | active client texture unit: | |
4823 | <constant>GL_TEXTURE_COORD_ARRAY</constant>, | |
4824 | <constant>GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING</constant>, | |
4825 | <constant>GL_TEXTURE_COORD_ARRAY_SIZE</constant>, | |
4826 | <constant>GL_TEXTURE_COORD_ARRAY_STRIDE</constant>, | |
4827 | <constant>GL_TEXTURE_COORD_ARRAY_TYPE</constant>. | |
4828 | </para> | |
4829 | </refsect1> | |
4830 | <refsect1 id="errors"><title>Errors</title> | |
4831 | <para> | |
4832 | <constant>GL_INVALID_ENUM</constant> is generated if <parameter>pname</parameter> is not an accepted value. | |
4833 | </para> | |
4834 | <para> | |
4835 | <constant>GL_INVALID_OPERATION</constant> is generated if <function>glGet</function> | |
4836 | is executed between the execution of <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry> | |
4837 | and the corresponding execution of <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>. | |
4838 | </para> | |
4839 | <para> | |
4840 | </para> | |
4841 | </refsect1> | |
4842 | <refsect1 id="seealso"><title>See Also</title> | |
4843 | <para> | |
4844 | <citerefentry><refentrytitle>glGetActiveAttrib</refentrytitle></citerefentry>, | |
4845 | <citerefentry><refentrytitle>glGetActiveUniform</refentrytitle></citerefentry>, | |
4846 | <citerefentry><refentrytitle>glGetAttachedShaders</refentrytitle></citerefentry>, | |
4847 | <citerefentry><refentrytitle>glGetAttribLocation</refentrytitle></citerefentry>, | |
4848 | <citerefentry><refentrytitle>glGetBufferParameteriv</refentrytitle></citerefentry>, | |
4849 | <citerefentry><refentrytitle>glGetBufferPointerv</refentrytitle></citerefentry>, | |
4850 | <citerefentry><refentrytitle>glGetBufferSubData</refentrytitle></citerefentry>, | |
4851 | <citerefentry><refentrytitle>glGetClipPlane</refentrytitle></citerefentry>, | |
4852 | <citerefentry><refentrytitle>glGetColorTable</refentrytitle></citerefentry>, | |
4853 | <citerefentry><refentrytitle>glGetColorTableParameter</refentrytitle></citerefentry>, | |
4854 | <citerefentry><refentrytitle>glGetCompressedTexImage</refentrytitle></citerefentry>, | |
4855 | <citerefentry><refentrytitle>glGetConvolutionFilter</refentrytitle></citerefentry>, | |
4856 | <citerefentry><refentrytitle>glGetConvolutionParameter</refentrytitle></citerefentry>, | |
4857 | <citerefentry><refentrytitle>glGetError</refentrytitle></citerefentry>, | |
4858 | <citerefentry><refentrytitle>glGetHistogram</refentrytitle></citerefentry>, | |
4859 | <citerefentry><refentrytitle>glGetHistogramParameter</refentrytitle></citerefentry>, | |
4860 | <citerefentry><refentrytitle>glGetLight</refentrytitle></citerefentry>, | |
4861 | <citerefentry><refentrytitle>glGetMap</refentrytitle></citerefentry>, | |
4862 | <citerefentry><refentrytitle>glGetMaterial</refentrytitle></citerefentry>, | |
4863 | <citerefentry><refentrytitle>glGetMinmax</refentrytitle></citerefentry>, | |
4864 | <citerefentry><refentrytitle>glGetMinmaxParameter</refentrytitle></citerefentry>, | |
4865 | <citerefentry><refentrytitle>glGetPixelMap</refentrytitle></citerefentry>, | |
4866 | <citerefentry><refentrytitle>glGetPointerv</refentrytitle></citerefentry>, | |
4867 | <citerefentry><refentrytitle>glGetPolygonStipple</refentrytitle></citerefentry>, | |
4868 | <citerefentry><refentrytitle>glGetProgram</refentrytitle></citerefentry>, | |
4869 | <citerefentry><refentrytitle>glGetProgramInfoLog</refentrytitle></citerefentry>, | |
4870 | <citerefentry><refentrytitle>glGetQueryiv</refentrytitle></citerefentry>, | |
4871 | <citerefentry><refentrytitle>glGetQueryObject</refentrytitle></citerefentry>, | |
4872 | <citerefentry><refentrytitle>glGetSeparableFilter</refentrytitle></citerefentry>, | |
4873 | <citerefentry><refentrytitle>glGetShader</refentrytitle></citerefentry>, | |
4874 | <citerefentry><refentrytitle>glGetShaderInfoLog</refentrytitle></citerefentry>, | |
4875 | <citerefentry><refentrytitle>glGetShaderSource</refentrytitle></citerefentry>, | |
4876 | <citerefentry><refentrytitle>glGetString</refentrytitle></citerefentry>, | |
4877 | <citerefentry><refentrytitle>glGetTexEnv</refentrytitle></citerefentry>, | |
4878 | <citerefentry><refentrytitle>glGetTexGen</refentrytitle></citerefentry>, | |
4879 | <citerefentry><refentrytitle>glGetTexImage</refentrytitle></citerefentry>, | |
4880 | <citerefentry><refentrytitle>glGetTexLevelParameter</refentrytitle></citerefentry>, | |
4881 | <citerefentry><refentrytitle>glGetTexParameter</refentrytitle></citerefentry>, | |
4882 | <citerefentry><refentrytitle>glGetUniform</refentrytitle></citerefentry>, | |
4883 | <citerefentry><refentrytitle>glGetUniformLocation</refentrytitle></citerefentry>, | |
4884 | <citerefentry><refentrytitle>glGetVertexAttrib</refentrytitle></citerefentry>, | |
4885 | <citerefentry><refentrytitle>glGetVertexAttribPointerv</refentrytitle></citerefentry>, | |
4886 | <citerefentry><refentrytitle>glIsEnabled</refentrytitle></citerefentry> | |
4887 | </para> | |
4888 | </refsect1> | |
4889 | <refsect1 id="Copyright"><title>Copyright</title> | |
4890 | <para> | |
4891 | Copyright <trademark class="copyright"></trademark> 1991-2006 | |
4892 | Silicon Graphics, Inc. This document is licensed under the SGI | |
4893 | Free Software B License. For details, see | |
4894 | <ulink url="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</ulink>. | |
4895 | </para> | |
4896 | </refsect1> | |
4897 | </refentry> |