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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="glPixelTransfer"> | |
5 | <refmeta> | |
6 | <refmetainfo> | |
7 | <copyright> | |
8 | <year>1991-2006</year> | |
9 | <holder>Silicon Graphics, Inc.</holder> | |
10 | </copyright> | |
11 | </refmetainfo> | |
12 | <refentrytitle>glPixelTransfer</refentrytitle> | |
13 | <manvolnum>3G</manvolnum> | |
14 | </refmeta> | |
15 | <refnamediv> | |
16 | <refname>glPixelTransfer</refname> | |
17 | <refpurpose>set pixel transfer modes</refpurpose> | |
18 | </refnamediv> | |
19 | <refsynopsisdiv><title>C Specification</title> | |
20 | <funcsynopsis> | |
21 | <funcprototype> | |
22 | <funcdef>void <function>glPixelTransferf</function></funcdef> | |
23 | <paramdef>GLenum <parameter>pname</parameter></paramdef> | |
24 | <paramdef>GLfloat <parameter>param</parameter></paramdef> | |
25 | </funcprototype> | |
26 | </funcsynopsis> | |
27 | <funcsynopsis> | |
28 | <funcprototype> | |
29 | <funcdef>void <function>glPixelTransferi</function></funcdef> | |
30 | <paramdef>GLenum <parameter>pname</parameter></paramdef> | |
31 | <paramdef>GLint <parameter>param</parameter></paramdef> | |
32 | </funcprototype> | |
33 | </funcsynopsis> | |
34 | </refsynopsisdiv> | |
35 | <!-- eqn: ignoring delim $$ --> | |
36 | <refsect1 id="parameters"><title>Parameters</title> | |
37 | <variablelist> | |
38 | <varlistentry> | |
39 | <term><parameter>pname</parameter></term> | |
40 | <listitem> | |
41 | <para> | |
42 | Specifies the symbolic name of the pixel transfer parameter to be set. | |
43 | Must be one of the following: | |
44 | <constant>GL_MAP_COLOR</constant>, | |
45 | <constant>GL_MAP_STENCIL</constant>, | |
46 | <constant>GL_INDEX_SHIFT</constant>, | |
47 | <constant>GL_INDEX_OFFSET</constant>, | |
48 | <constant>GL_RED_SCALE</constant>, | |
49 | <constant>GL_RED_BIAS</constant>, | |
50 | <constant>GL_GREEN_SCALE</constant>, | |
51 | <constant>GL_GREEN_BIAS</constant>, | |
52 | <constant>GL_BLUE_SCALE</constant>, | |
53 | <constant>GL_BLUE_BIAS</constant>, | |
54 | <constant>GL_ALPHA_SCALE</constant>, | |
55 | <constant>GL_ALPHA_BIAS</constant>, | |
56 | <constant>GL_DEPTH_SCALE</constant>, or | |
57 | <constant>GL_DEPTH_BIAS</constant>. | |
58 | </para> | |
59 | <para> | |
60 | Additionally, if the <code>ARB_imaging</code> extension is supported, the | |
61 | following symbolic names are accepted: | |
62 | <constant>GL_POST_COLOR_MATRIX_RED_SCALE</constant>, | |
63 | <constant>GL_POST_COLOR_MATRIX_GREEN_SCALE</constant>, | |
64 | <constant>GL_POST_COLOR_MATRIX_BLUE_SCALE</constant>, | |
65 | <constant>GL_POST_COLOR_MATRIX_ALPHA_SCALE</constant>, | |
66 | <constant>GL_POST_COLOR_MATRIX_RED_BIAS</constant>, | |
67 | <constant>GL_POST_COLOR_MATRIX_GREEN_BIAS</constant>, | |
68 | <constant>GL_POST_COLOR_MATRIX_BLUE_BIAS</constant>, | |
69 | <constant>GL_POST_COLOR_MATRIX_ALPHA_BIAS</constant>, | |
70 | <constant>GL_POST_CONVOLUTION_RED_SCALE</constant>, | |
71 | <constant>GL_POST_CONVOLUTION_GREEN_SCALE</constant>, | |
72 | <constant>GL_POST_CONVOLUTION_BLUE_SCALE</constant>, | |
73 | <constant>GL_POST_CONVOLUTION_ALPHA_SCALE</constant>, | |
74 | <constant>GL_POST_CONVOLUTION_RED_BIAS</constant>, | |
75 | <constant>GL_POST_CONVOLUTION_GREEN_BIAS</constant>, | |
76 | <constant>GL_POST_CONVOLUTION_BLUE_BIAS</constant>, and | |
77 | <constant>GL_POST_CONVOLUTION_ALPHA_BIAS</constant>. | |
78 | </para> | |
79 | </listitem> | |
80 | </varlistentry> | |
81 | <varlistentry> | |
82 | <term><parameter>param</parameter></term> | |
83 | <listitem> | |
84 | <para> | |
85 | Specifies the value that <parameter>pname</parameter> is set to. | |
86 | </para> | |
87 | </listitem> | |
88 | </varlistentry> | |
89 | </variablelist> | |
90 | </refsect1> | |
91 | <refsect1 id="description"><title>Description</title> | |
92 | <para> | |
93 | <function>glPixelTransfer</function> sets pixel transfer modes that affect the operation of subsequent | |
94 | <citerefentry><refentrytitle>glCopyPixels</refentrytitle></citerefentry>, | |
95 | <citerefentry><refentrytitle>glCopyTexImage1D</refentrytitle></citerefentry>, | |
96 | <citerefentry><refentrytitle>glCopyTexImage2D</refentrytitle></citerefentry>, | |
97 | <citerefentry><refentrytitle>glCopyTexSubImage1D</refentrytitle></citerefentry>, | |
98 | <citerefentry><refentrytitle>glCopyTexSubImage2D</refentrytitle></citerefentry>, | |
99 | <citerefentry><refentrytitle>glCopyTexSubImage3D</refentrytitle></citerefentry>, | |
100 | <citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry>, | |
101 | <citerefentry><refentrytitle>glReadPixels</refentrytitle></citerefentry>, | |
102 | <citerefentry><refentrytitle>glTexImage1D</refentrytitle></citerefentry>, | |
103 | <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>, | |
104 | <citerefentry><refentrytitle>glTexImage3D</refentrytitle></citerefentry>, | |
105 | <citerefentry><refentrytitle>glTexSubImage1D</refentrytitle></citerefentry>, | |
106 | <citerefentry><refentrytitle>glTexSubImage2D</refentrytitle></citerefentry>, and | |
107 | <citerefentry><refentrytitle>glTexSubImage3D</refentrytitle></citerefentry> commands. | |
108 | Additionally, if the <code>ARB_imaging</code> subset is supported, the | |
109 | routines | |
110 | <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>, | |
111 | <citerefentry><refentrytitle>glColorSubTable</refentrytitle></citerefentry>, | |
112 | <citerefentry><refentrytitle>glConvolutionFilter1D</refentrytitle></citerefentry>, | |
113 | <citerefentry><refentrytitle>glConvolutionFilter2D</refentrytitle></citerefentry>, | |
114 | <citerefentry><refentrytitle>glHistogram</refentrytitle></citerefentry>, | |
115 | <citerefentry><refentrytitle>glMinmax</refentrytitle></citerefentry>, and | |
116 | <citerefentry><refentrytitle>glSeparableFilter2D</refentrytitle></citerefentry> are also affected. | |
117 | The algorithms that are specified by pixel transfer modes operate on | |
118 | pixels after they are read from the frame buffer | |
119 | (<citerefentry><refentrytitle>glCopyPixels</refentrytitle></citerefentry> | |
120 | <citerefentry><refentrytitle>glCopyTexImage1D</refentrytitle></citerefentry>, | |
121 | <citerefentry><refentrytitle>glCopyTexImage2D</refentrytitle></citerefentry>, | |
122 | <citerefentry><refentrytitle>glCopyTexSubImage1D</refentrytitle></citerefentry>, | |
123 | <citerefentry><refentrytitle>glCopyTexSubImage2D</refentrytitle></citerefentry>, | |
124 | <citerefentry><refentrytitle>glCopyTexSubImage3D</refentrytitle></citerefentry>, and | |
125 | <citerefentry><refentrytitle>glReadPixels</refentrytitle></citerefentry>), | |
126 | or unpacked from client memory | |
127 | (<citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry>, <citerefentry><refentrytitle>glTexImage1D</refentrytitle></citerefentry>, <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>, <citerefentry><refentrytitle>glTexImage3D</refentrytitle></citerefentry>, | |
128 | <citerefentry><refentrytitle>glTexSubImage1D</refentrytitle></citerefentry>, <citerefentry><refentrytitle>glTexSubImage2D</refentrytitle></citerefentry>, and <citerefentry><refentrytitle>glTexSubImage3D</refentrytitle></citerefentry>). | |
129 | Pixel transfer operations happen in the same order, | |
130 | and in the same manner, | |
131 | regardless of the command that resulted in the pixel operation. | |
132 | Pixel storage modes | |
133 | (see <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>) | |
134 | control the unpacking of pixels being read from client memory | |
135 | and the packing of pixels being written back into client memory. | |
136 | </para> | |
137 | <para> | |
138 | Pixel transfer operations handle four fundamental pixel types: | |
139 | <emphasis>color</emphasis>, | |
140 | <emphasis>color index</emphasis>, | |
141 | <emphasis>depth</emphasis>, and | |
142 | <emphasis>stencil</emphasis>. | |
143 | <emphasis>Color</emphasis> pixels consist of four floating-point values | |
144 | with unspecified mantissa and exponent sizes, | |
145 | scaled such that 0 represents zero intensity | |
146 | and 1 represents full intensity. | |
147 | <emphasis>Color indices</emphasis> comprise a single fixed-point value, | |
148 | with unspecified precision to the right of the binary point. | |
149 | <emphasis>Depth</emphasis> pixels comprise a single floating-point value, | |
150 | with unspecified mantissa and exponent sizes, | |
151 | scaled such that 0.0 represents the minimum depth buffer value, | |
152 | and 1.0 represents the maximum depth buffer value. | |
153 | Finally, | |
154 | <emphasis>stencil</emphasis> pixels comprise a single fixed-point value, | |
155 | with unspecified precision to the right of the binary point. | |
156 | </para> | |
157 | <para> | |
158 | The pixel transfer operations performed on the four basic pixel types are | |
159 | as follows: | |
160 | </para> | |
161 | <variablelist> | |
162 | <varlistentry> | |
163 | <term><emphasis>Color</emphasis></term> | |
164 | <listitem> | |
165 | <para> | |
166 | Each of the four color components is multiplied by a scale factor, | |
167 | then added to a bias factor. | |
168 | That is, | |
169 | the red component is multiplied by <constant>GL_RED_SCALE</constant>, | |
170 | then added to <constant>GL_RED_BIAS</constant>; | |
171 | the green component is multiplied by <constant>GL_GREEN_SCALE</constant>, | |
172 | then added to <constant>GL_GREEN_BIAS</constant>; | |
173 | the blue component is multiplied by <constant>GL_BLUE_SCALE</constant>, | |
174 | then added to <constant>GL_BLUE_BIAS</constant>; and | |
175 | the alpha component is multiplied by <constant>GL_ALPHA_SCALE</constant>, | |
176 | then added to <constant>GL_ALPHA_BIAS</constant>. | |
177 | After all four color components are scaled and biased, | |
178 | each is clamped to the range | |
179 | <inlineequation><mml:math> | |
180 | <!-- eqn: [0,1]:--> | |
181 | <mml:mfenced open="[" close="]"> | |
182 | <mml:mn>0</mml:mn> | |
183 | <mml:mn>1</mml:mn> | |
184 | </mml:mfenced> | |
185 | </mml:math></inlineequation>. | |
186 | All color, scale, and bias values are specified with <function>glPixelTransfer</function>. | |
187 | </para> | |
188 | <para> | |
189 | If <constant>GL_MAP_COLOR</constant> is true, | |
190 | each color component is scaled by the size of the corresponding | |
191 | color-to-color map, | |
192 | then replaced by the contents of that map indexed by the scaled component. | |
193 | That is, | |
194 | the red component is scaled by <constant>GL_PIXEL_MAP_R_TO_R_SIZE</constant>, | |
195 | then replaced by the contents of <constant>GL_PIXEL_MAP_R_TO_R</constant> indexed by itself. | |
196 | The green component is scaled by <constant>GL_PIXEL_MAP_G_TO_G_SIZE</constant>, | |
197 | then replaced by the contents of <constant>GL_PIXEL_MAP_G_TO_G</constant> indexed by itself. | |
198 | The blue component is scaled by <constant>GL_PIXEL_MAP_B_TO_B_SIZE</constant>, | |
199 | then replaced by the contents of <constant>GL_PIXEL_MAP_B_TO_B</constant> indexed by itself. | |
200 | And | |
201 | the alpha component is scaled by <constant>GL_PIXEL_MAP_A_TO_A_SIZE</constant>, | |
202 | then replaced by the contents of <constant>GL_PIXEL_MAP_A_TO_A</constant> indexed by itself. | |
203 | All components taken from the maps are then clamped to the range | |
204 | <inlineequation><mml:math> | |
205 | <!-- eqn: [0,1]:--> | |
206 | <mml:mfenced open="[" close="]"> | |
207 | <mml:mn>0</mml:mn> | |
208 | <mml:mn>1</mml:mn> | |
209 | </mml:mfenced> | |
210 | </mml:math></inlineequation>. | |
211 | <constant>GL_MAP_COLOR</constant> is specified with <function>glPixelTransfer</function>. | |
212 | The contents of the various maps are specified with <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
213 | </para> | |
214 | <para> | |
215 | If the <code>ARB_imaging</code> extension is supported, each of the four | |
216 | color components may be scaled and biased after transformation by the | |
217 | color matrix. | |
218 | That is, | |
219 | the red component is multiplied by <constant>GL_POST_COLOR_MATRIX_RED_SCALE</constant>, | |
220 | then added to <constant>GL_POST_COLOR_MATRIX_RED_BIAS</constant>; | |
221 | the green component is multiplied by <constant>GL_POST_COLOR_MATRIX_GREEN_SCALE</constant>, | |
222 | then added to <constant>GL_POST_COLOR_MATRIX_GREEN_BIAS</constant>; | |
223 | the blue component is multiplied by <constant>GL_POST_COLOR_MATRIX_BLUE_SCALE</constant>, | |
224 | then added to <constant>GL_POST_COLOR_MATRIX_BLUE_BIAS</constant>; and | |
225 | the alpha component is multiplied by <constant>GL_POST_COLOR_MATRIX_ALPHA_SCALE</constant>, | |
226 | then added to <constant>GL_POST_COLOR_MATRIX_ALPHA_BIAS</constant>. | |
227 | After all four color components are scaled and biased, | |
228 | each is clamped to the range | |
229 | <inlineequation><mml:math> | |
230 | <!-- eqn: [0,1]:--> | |
231 | <mml:mfenced open="[" close="]"> | |
232 | <mml:mn>0</mml:mn> | |
233 | <mml:mn>1</mml:mn> | |
234 | </mml:mfenced> | |
235 | </mml:math></inlineequation>. | |
236 | </para> | |
237 | <para> | |
238 | Similarly, if the <code>ARB_imaging</code> extension is supported, each of | |
239 | the four color components may be scaled and biased after processing by | |
240 | the enabled convolution filter. | |
241 | That is, | |
242 | the red component is multiplied by <constant>GL_POST_CONVOLUTION_RED_SCALE</constant>, | |
243 | then added to <constant>GL_POST_CONVOLUTION_RED_BIAS</constant>; | |
244 | the green component is multiplied by <constant>GL_POST_CONVOLUTION_GREEN_SCALE</constant>, | |
245 | then added to <constant>GL_POST_CONVOLUTION_GREEN_BIAS</constant>; | |
246 | the blue component is multiplied by <constant>GL_POST_CONVOLUTION_BLUE_SCALE</constant>, | |
247 | then added to <constant>GL_POST_CONVOLUTION_BLUE_BIAS</constant>; and | |
248 | the alpha component is multiplied by <constant>GL_POST_CONVOLUTION_ALPHA_SCALE</constant>, | |
249 | then added to <constant>GL_POST_CONVOLUTION_ALPHA_BIAS</constant>. | |
250 | After all four color components are scaled and biased, | |
251 | each is clamped to the range | |
252 | <inlineequation><mml:math> | |
253 | <!-- eqn: [0,1]:--> | |
254 | <mml:mfenced open="[" close="]"> | |
255 | <mml:mn>0</mml:mn> | |
256 | <mml:mn>1</mml:mn> | |
257 | </mml:mfenced> | |
258 | </mml:math></inlineequation>. | |
259 | </para> | |
260 | </listitem> | |
261 | </varlistentry> | |
262 | <varlistentry> | |
263 | <term><emphasis>Color index</emphasis></term> | |
264 | <listitem> | |
265 | <para> | |
266 | Each color index is shifted left by <constant>GL_INDEX_SHIFT</constant> bits; any bits | |
267 | beyond the number of fraction bits carried | |
268 | by the fixed-point index are filled with zeros. | |
269 | If <constant>GL_INDEX_SHIFT</constant> is negative, | |
270 | the shift is to the right, | |
271 | again zero filled. | |
272 | Then <constant>GL_INDEX_OFFSET</constant> is added to the index. | |
273 | <constant>GL_INDEX_SHIFT</constant> and <constant>GL_INDEX_OFFSET</constant> are specified with | |
274 | <function>glPixelTransfer</function>. | |
275 | </para> | |
276 | <para> | |
277 | From this point, operation diverges depending on the required format of | |
278 | the resulting pixels. | |
279 | If the resulting pixels are to be written to a color index buffer, | |
280 | or if they are being read back to client memory in <constant>GL_COLOR_INDEX</constant> format, | |
281 | the pixels continue to be treated as indices. | |
282 | If <constant>GL_MAP_COLOR</constant> is true, | |
283 | each index is masked by | |
284 | <inlineequation><mml:math> | |
285 | <!-- eqn: 2 sup n - 1:--> | |
286 | <mml:mrow> | |
287 | <mml:msup><mml:mn>2</mml:mn> | |
288 | <mml:mi mathvariant="italic">n</mml:mi> | |
289 | </mml:msup> | |
290 | <mml:mo>-</mml:mo> | |
291 | <mml:mn>1</mml:mn> | |
292 | </mml:mrow> | |
293 | </mml:math></inlineequation>, | |
294 | where | |
295 | <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation> | |
296 | is <constant>GL_PIXEL_MAP_I_TO_I_SIZE</constant>, | |
297 | then replaced by the contents of <constant>GL_PIXEL_MAP_I_TO_I</constant> indexed by the | |
298 | masked value. | |
299 | <constant>GL_MAP_COLOR</constant> is specified with <function>glPixelTransfer</function>. | |
300 | The contents of the index map is specified with <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
301 | </para> | |
302 | <para> | |
303 | If the resulting pixels are to be written to an RGBA color buffer, | |
304 | or if they are read back to client memory in a format other than | |
305 | <constant>GL_COLOR_INDEX</constant>, | |
306 | the pixels are converted from indices to colors by referencing the | |
307 | four maps | |
308 | <constant>GL_PIXEL_MAP_I_TO_R</constant>, | |
309 | <constant>GL_PIXEL_MAP_I_TO_G</constant>, | |
310 | <constant>GL_PIXEL_MAP_I_TO_B</constant>, and | |
311 | <constant>GL_PIXEL_MAP_I_TO_A</constant>. | |
312 | Before being dereferenced, | |
313 | the index is masked by | |
314 | <inlineequation><mml:math> | |
315 | <!-- eqn: 2 sup n - 1:--> | |
316 | <mml:mrow> | |
317 | <mml:msup><mml:mn>2</mml:mn> | |
318 | <mml:mi mathvariant="italic">n</mml:mi> | |
319 | </mml:msup> | |
320 | <mml:mo>-</mml:mo> | |
321 | <mml:mn>1</mml:mn> | |
322 | </mml:mrow> | |
323 | </mml:math></inlineequation>, | |
324 | where | |
325 | <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation> | |
326 | is | |
327 | <constant>GL_PIXEL_MAP_I_TO_R_SIZE</constant> for the red map, | |
328 | <constant>GL_PIXEL_MAP_I_TO_G_SIZE</constant> for the green map, | |
329 | <constant>GL_PIXEL_MAP_I_TO_B_SIZE</constant> for the blue map, and | |
330 | <constant>GL_PIXEL_MAP_I_TO_A_SIZE</constant> for the alpha map. | |
331 | All components taken from the maps are then clamped to the range | |
332 | <inlineequation><mml:math> | |
333 | <!-- eqn: [0,1]:--> | |
334 | <mml:mfenced open="[" close="]"> | |
335 | <mml:mn>0</mml:mn> | |
336 | <mml:mn>1</mml:mn> | |
337 | </mml:mfenced> | |
338 | </mml:math></inlineequation>. | |
339 | The contents of the four maps is specified with <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>. | |
340 | </para> | |
341 | </listitem> | |
342 | </varlistentry> | |
343 | <varlistentry> | |
344 | <term><emphasis>Depth</emphasis></term> | |
345 | <listitem> | |
346 | <para> | |
347 | Each depth value is multiplied by <constant>GL_DEPTH_SCALE</constant>, | |
348 | added to <constant>GL_DEPTH_BIAS</constant>, | |
349 | then clamped to the range | |
350 | <inlineequation><mml:math> | |
351 | <!-- eqn: [0,1]:--> | |
352 | <mml:mfenced open="[" close="]"> | |
353 | <mml:mn>0</mml:mn> | |
354 | <mml:mn>1</mml:mn> | |
355 | </mml:mfenced> | |
356 | </mml:math></inlineequation>. | |
357 | </para> | |
358 | </listitem> | |
359 | </varlistentry> | |
360 | <varlistentry> | |
361 | <term><emphasis>Stencil</emphasis></term> | |
362 | <listitem> | |
363 | <para> | |
364 | Each index is shifted <constant>GL_INDEX_SHIFT</constant> bits just as a color index is, | |
365 | then added to <constant>GL_INDEX_OFFSET</constant>. | |
366 | If <constant>GL_MAP_STENCIL</constant> is true, | |
367 | each index is masked by | |
368 | <inlineequation><mml:math> | |
369 | <!-- eqn: 2 sup n - 1:--> | |
370 | <mml:mrow> | |
371 | <mml:msup><mml:mn>2</mml:mn> | |
372 | <mml:mi mathvariant="italic">n</mml:mi> | |
373 | </mml:msup> | |
374 | <mml:mo>-</mml:mo> | |
375 | <mml:mn>1</mml:mn> | |
376 | </mml:mrow> | |
377 | </mml:math></inlineequation>, | |
378 | where | |
379 | <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation> | |
380 | is <constant>GL_PIXEL_MAP_S_TO_S_SIZE</constant>, | |
381 | then replaced by the contents of <constant>GL_PIXEL_MAP_S_TO_S</constant> indexed by the | |
382 | masked value. | |
383 | </para> | |
384 | </listitem> | |
385 | </varlistentry> | |
386 | </variablelist> | |
387 | <para> | |
388 | The following table gives the type, | |
389 | initial value, | |
390 | and range of valid values for each of the pixel transfer parameters | |
391 | that are set with <function>glPixelTransfer</function>. | |
392 | </para> | |
393 | <para> | |
394 | </para> | |
395 | <informaltable frame="topbot"> | |
396 | <tgroup cols="4" align="left"> | |
397 | <colspec colwidth="4*" /> | |
398 | <colspec colwidth="1*" align="center"/> | |
399 | <colspec colwidth="1*" align="center"/> | |
400 | <colspec colwidth="2*" align="center"/> | |
401 | <thead> | |
402 | <row> | |
403 | <entry rowsep="1" align="left"><emphasis role="bold"> | |
404 | <parameter>pname</parameter> | |
405 | </emphasis></entry> | |
406 | <entry rowsep="1" align="center"><emphasis role="bold"> | |
407 | Type | |
408 | </emphasis></entry> | |
409 | <entry rowsep="1" align="center"><emphasis role="bold"> | |
410 | Initial Value | |
411 | </emphasis></entry> | |
412 | <entry rowsep="1" align="center"><emphasis role="bold"> | |
413 | Valid Range | |
414 | </emphasis></entry> | |
415 | </row> | |
416 | </thead> | |
417 | <tbody> | |
418 | <row> | |
419 | <entry align="left"> | |
420 | <constant>GL_MAP_COLOR</constant> | |
421 | </entry> | |
422 | <entry align="center"> | |
423 | boolean | |
424 | </entry> | |
425 | <entry align="center"> | |
426 | false | |
427 | </entry> | |
428 | <entry align="center"> | |
429 | true/false | |
430 | </entry> | |
431 | </row> | |
432 | <row> | |
433 | <entry align="left"> | |
434 | <constant>GL_MAP_STENCIL</constant> | |
435 | </entry> | |
436 | <entry align="center"> | |
437 | boolean | |
438 | </entry> | |
439 | <entry align="center"> | |
440 | false | |
441 | </entry> | |
442 | <entry align="center"> | |
443 | true/false | |
444 | </entry> | |
445 | </row> | |
446 | <row> | |
447 | <entry align="left"> | |
448 | <constant>GL_INDEX_SHIFT</constant> | |
449 | </entry> | |
450 | <entry align="center"> | |
451 | integer | |
452 | </entry> | |
453 | <entry align="center"> | |
454 | 0 | |
455 | </entry> | |
456 | <entry align="center"> | |
457 | <inlineequation><mml:math> | |
458 | <!-- eqn: left ( -\(if, \(if right ):--> | |
459 | <mml:mfenced open="(" close=")"> | |
460 | <mml:mrow> | |
461 | <mml:mo>-</mml:mo> | |
462 | <mml:infinity/> | |
463 | </mml:mrow> | |
464 | <mml:infinity/> | |
465 | </mml:mfenced> | |
466 | </mml:math></inlineequation> | |
467 | </entry> | |
468 | </row> | |
469 | <row> | |
470 | <entry align="left"> | |
471 | <constant>GL_INDEX_OFFSET</constant> | |
472 | </entry> | |
473 | <entry align="center"> | |
474 | integer | |
475 | </entry> | |
476 | <entry align="center"> | |
477 | 0 | |
478 | </entry> | |
479 | <entry align="center"> | |
480 | <inlineequation><mml:math> | |
481 | <!-- eqn: left ( -\(if, \(if right ):--> | |
482 | <mml:mfenced open="(" close=")"> | |
483 | <mml:mrow> | |
484 | <mml:mo>-</mml:mo> | |
485 | <mml:infinity/> | |
486 | </mml:mrow> | |
487 | <mml:infinity/> | |
488 | </mml:mfenced> | |
489 | </mml:math></inlineequation> | |
490 | </entry> | |
491 | </row> | |
492 | <row> | |
493 | <entry align="left"> | |
494 | <constant>GL_RED_SCALE</constant> | |
495 | </entry> | |
496 | <entry align="center"> | |
497 | float | |
498 | </entry> | |
499 | <entry align="center"> | |
500 | 1 | |
501 | </entry> | |
502 | <entry align="center"> | |
503 | <inlineequation><mml:math> | |
504 | <!-- eqn: left ( -\(if, \(if right ):--> | |
505 | <mml:mfenced open="(" close=")"> | |
506 | <mml:mrow> | |
507 | <mml:mo>-</mml:mo> | |
508 | <mml:infinity/> | |
509 | </mml:mrow> | |
510 | <mml:infinity/> | |
511 | </mml:mfenced> | |
512 | </mml:math></inlineequation> | |
513 | </entry> | |
514 | </row> | |
515 | <row> | |
516 | <entry align="left"> | |
517 | <constant>GL_GREEN_SCALE</constant> | |
518 | </entry> | |
519 | <entry align="center"> | |
520 | float | |
521 | </entry> | |
522 | <entry align="center"> | |
523 | 1 | |
524 | </entry> | |
525 | <entry align="center"> | |
526 | <inlineequation><mml:math> | |
527 | <!-- eqn: left ( -\(if, \(if right ):--> | |
528 | <mml:mfenced open="(" close=")"> | |
529 | <mml:mrow> | |
530 | <mml:mo>-</mml:mo> | |
531 | <mml:infinity/> | |
532 | </mml:mrow> | |
533 | <mml:infinity/> | |
534 | </mml:mfenced> | |
535 | </mml:math></inlineequation> | |
536 | </entry> | |
537 | </row> | |
538 | <row> | |
539 | <entry align="left"> | |
540 | <constant>GL_BLUE_SCALE</constant> | |
541 | </entry> | |
542 | <entry align="center"> | |
543 | float | |
544 | </entry> | |
545 | <entry align="center"> | |
546 | 1 | |
547 | </entry> | |
548 | <entry align="center"> | |
549 | <inlineequation><mml:math> | |
550 | <!-- eqn: left ( -\(if, \(if right ):--> | |
551 | <mml:mfenced open="(" close=")"> | |
552 | <mml:mrow> | |
553 | <mml:mo>-</mml:mo> | |
554 | <mml:infinity/> | |
555 | </mml:mrow> | |
556 | <mml:infinity/> | |
557 | </mml:mfenced> | |
558 | </mml:math></inlineequation> | |
559 | </entry> | |
560 | </row> | |
561 | <row> | |
562 | <entry align="left"> | |
563 | <constant>GL_ALPHA_SCALE</constant> | |
564 | </entry> | |
565 | <entry align="center"> | |
566 | float | |
567 | </entry> | |
568 | <entry align="center"> | |
569 | 1 | |
570 | </entry> | |
571 | <entry align="center"> | |
572 | <inlineequation><mml:math> | |
573 | <!-- eqn: left ( -\(if, \(if right ):--> | |
574 | <mml:mfenced open="(" close=")"> | |
575 | <mml:mrow> | |
576 | <mml:mo>-</mml:mo> | |
577 | <mml:infinity/> | |
578 | </mml:mrow> | |
579 | <mml:infinity/> | |
580 | </mml:mfenced> | |
581 | </mml:math></inlineequation> | |
582 | </entry> | |
583 | </row> | |
584 | <row> | |
585 | <entry align="left"> | |
586 | <constant>GL_DEPTH_SCALE</constant> | |
587 | </entry> | |
588 | <entry align="center"> | |
589 | float | |
590 | </entry> | |
591 | <entry align="center"> | |
592 | 1 | |
593 | </entry> | |
594 | <entry align="center"> | |
595 | <inlineequation><mml:math> | |
596 | <!-- eqn: left ( -\(if, \(if right ):--> | |
597 | <mml:mfenced open="(" close=")"> | |
598 | <mml:mrow> | |
599 | <mml:mo>-</mml:mo> | |
600 | <mml:infinity/> | |
601 | </mml:mrow> | |
602 | <mml:infinity/> | |
603 | </mml:mfenced> | |
604 | </mml:math></inlineequation> | |
605 | </entry> | |
606 | </row> | |
607 | <row> | |
608 | <entry align="left"> | |
609 | <constant>GL_RED_BIAS</constant> | |
610 | </entry> | |
611 | <entry align="center"> | |
612 | float | |
613 | </entry> | |
614 | <entry align="center"> | |
615 | 0 | |
616 | </entry> | |
617 | <entry align="center"> | |
618 | <inlineequation><mml:math> | |
619 | <!-- eqn: left ( -\(if, \(if right ):--> | |
620 | <mml:mfenced open="(" close=")"> | |
621 | <mml:mrow> | |
622 | <mml:mo>-</mml:mo> | |
623 | <mml:infinity/> | |
624 | </mml:mrow> | |
625 | <mml:infinity/> | |
626 | </mml:mfenced> | |
627 | </mml:math></inlineequation> | |
628 | </entry> | |
629 | </row> | |
630 | <row> | |
631 | <entry align="left"> | |
632 | <constant>GL_GREEN_BIAS</constant> | |
633 | </entry> | |
634 | <entry align="center"> | |
635 | float | |
636 | </entry> | |
637 | <entry align="center"> | |
638 | 0 | |
639 | </entry> | |
640 | <entry align="center"> | |
641 | <inlineequation><mml:math> | |
642 | <!-- eqn: left ( -\(if, \(if right ):--> | |
643 | <mml:mfenced open="(" close=")"> | |
644 | <mml:mrow> | |
645 | <mml:mo>-</mml:mo> | |
646 | <mml:infinity/> | |
647 | </mml:mrow> | |
648 | <mml:infinity/> | |
649 | </mml:mfenced> | |
650 | </mml:math></inlineequation> | |
651 | </entry> | |
652 | </row> | |
653 | <row> | |
654 | <entry align="left"> | |
655 | <constant>GL_BLUE_BIAS</constant> | |
656 | </entry> | |
657 | <entry align="center"> | |
658 | float | |
659 | </entry> | |
660 | <entry align="center"> | |
661 | 0 | |
662 | </entry> | |
663 | <entry align="center"> | |
664 | <inlineequation><mml:math> | |
665 | <!-- eqn: left ( -\(if, \(if right ):--> | |
666 | <mml:mfenced open="(" close=")"> | |
667 | <mml:mrow> | |
668 | <mml:mo>-</mml:mo> | |
669 | <mml:infinity/> | |
670 | </mml:mrow> | |
671 | <mml:infinity/> | |
672 | </mml:mfenced> | |
673 | </mml:math></inlineequation> | |
674 | </entry> | |
675 | </row> | |
676 | <row> | |
677 | <entry align="left"> | |
678 | <constant>GL_ALPHA_BIAS</constant> | |
679 | </entry> | |
680 | <entry align="center"> | |
681 | float | |
682 | </entry> | |
683 | <entry align="center"> | |
684 | 0 | |
685 | </entry> | |
686 | <entry align="center"> | |
687 | <inlineequation><mml:math> | |
688 | <!-- eqn: left ( -\(if, \(if right ):--> | |
689 | <mml:mfenced open="(" close=")"> | |
690 | <mml:mrow> | |
691 | <mml:mo>-</mml:mo> | |
692 | <mml:infinity/> | |
693 | </mml:mrow> | |
694 | <mml:infinity/> | |
695 | </mml:mfenced> | |
696 | </mml:math></inlineequation> | |
697 | </entry> | |
698 | </row> | |
699 | <row> | |
700 | <entry align="left"> | |
701 | <constant>GL_DEPTH_BIAS</constant> | |
702 | </entry> | |
703 | <entry align="center"> | |
704 | float | |
705 | </entry> | |
706 | <entry align="center"> | |
707 | 0 | |
708 | </entry> | |
709 | <entry align="center"> | |
710 | <inlineequation><mml:math> | |
711 | <!-- eqn: left ( -\(if, \(if right ):--> | |
712 | <mml:mfenced open="(" close=")"> | |
713 | <mml:mrow> | |
714 | <mml:mo>-</mml:mo> | |
715 | <mml:infinity/> | |
716 | </mml:mrow> | |
717 | <mml:infinity/> | |
718 | </mml:mfenced> | |
719 | </mml:math></inlineequation> | |
720 | </entry> | |
721 | </row> | |
722 | <row> | |
723 | <entry align="left"> | |
724 | <constant>GL_POST_COLOR_MATRIX_RED_SCALE</constant> | |
725 | </entry> | |
726 | <entry align="center"> | |
727 | float | |
728 | </entry> | |
729 | <entry align="center"> | |
730 | 1 | |
731 | </entry> | |
732 | <entry align="center"> | |
733 | <inlineequation><mml:math> | |
734 | <!-- eqn: left ( -\(if, \(if right ):--> | |
735 | <mml:mfenced open="(" close=")"> | |
736 | <mml:mrow> | |
737 | <mml:mo>-</mml:mo> | |
738 | <mml:infinity/> | |
739 | </mml:mrow> | |
740 | <mml:infinity/> | |
741 | </mml:mfenced> | |
742 | </mml:math></inlineequation> | |
743 | </entry> | |
744 | </row> | |
745 | <row> | |
746 | <entry align="left"> | |
747 | <constant>GL_POST_COLOR_MATRIX_GREEN_SCALE</constant> | |
748 | </entry> | |
749 | <entry align="center"> | |
750 | float | |
751 | </entry> | |
752 | <entry align="center"> | |
753 | 1 | |
754 | </entry> | |
755 | <entry align="center"> | |
756 | <inlineequation><mml:math> | |
757 | <!-- eqn: left ( -\(if, \(if right ):--> | |
758 | <mml:mfenced open="(" close=")"> | |
759 | <mml:mrow> | |
760 | <mml:mo>-</mml:mo> | |
761 | <mml:infinity/> | |
762 | </mml:mrow> | |
763 | <mml:infinity/> | |
764 | </mml:mfenced> | |
765 | </mml:math></inlineequation> | |
766 | </entry> | |
767 | </row> | |
768 | <row> | |
769 | <entry align="left"> | |
770 | <constant>GL_POST_COLOR_MATRIX_BLUE_SCALE</constant> | |
771 | </entry> | |
772 | <entry align="center"> | |
773 | float | |
774 | </entry> | |
775 | <entry align="center"> | |
776 | 1 | |
777 | </entry> | |
778 | <entry align="center"> | |
779 | <inlineequation><mml:math> | |
780 | <!-- eqn: left ( -\(if, \(if right ):--> | |
781 | <mml:mfenced open="(" close=")"> | |
782 | <mml:mrow> | |
783 | <mml:mo>-</mml:mo> | |
784 | <mml:infinity/> | |
785 | </mml:mrow> | |
786 | <mml:infinity/> | |
787 | </mml:mfenced> | |
788 | </mml:math></inlineequation> | |
789 | </entry> | |
790 | </row> | |
791 | <row> | |
792 | <entry align="left"> | |
793 | <constant>GL_POST_COLOR_MATRIX_ALPHA_SCALE</constant> | |
794 | </entry> | |
795 | <entry align="center"> | |
796 | float | |
797 | </entry> | |
798 | <entry align="center"> | |
799 | 1 | |
800 | </entry> | |
801 | <entry align="center"> | |
802 | <inlineequation><mml:math> | |
803 | <!-- eqn: left ( -\(if, \(if right ):--> | |
804 | <mml:mfenced open="(" close=")"> | |
805 | <mml:mrow> | |
806 | <mml:mo>-</mml:mo> | |
807 | <mml:infinity/> | |
808 | </mml:mrow> | |
809 | <mml:infinity/> | |
810 | </mml:mfenced> | |
811 | </mml:math></inlineequation> | |
812 | </entry> | |
813 | </row> | |
814 | <row> | |
815 | <entry align="left"> | |
816 | <constant>GL_POST_COLOR_MATRIX_RED_BIAS</constant> | |
817 | </entry> | |
818 | <entry align="center"> | |
819 | float | |
820 | </entry> | |
821 | <entry align="center"> | |
822 | 0 | |
823 | </entry> | |
824 | <entry align="center"> | |
825 | <inlineequation><mml:math> | |
826 | <!-- eqn: left ( -\(if, \(if right ):--> | |
827 | <mml:mfenced open="(" close=")"> | |
828 | <mml:mrow> | |
829 | <mml:mo>-</mml:mo> | |
830 | <mml:infinity/> | |
831 | </mml:mrow> | |
832 | <mml:infinity/> | |
833 | </mml:mfenced> | |
834 | </mml:math></inlineequation> | |
835 | </entry> | |
836 | </row> | |
837 | <row> | |
838 | <entry align="left"> | |
839 | <constant>GL_POST_COLOR_MATRIX_GREEN_BIAS</constant> | |
840 | </entry> | |
841 | <entry align="center"> | |
842 | float | |
843 | </entry> | |
844 | <entry align="center"> | |
845 | 0 | |
846 | </entry> | |
847 | <entry align="center"> | |
848 | <inlineequation><mml:math> | |
849 | <!-- eqn: left ( -\(if, \(if right ):--> | |
850 | <mml:mfenced open="(" close=")"> | |
851 | <mml:mrow> | |
852 | <mml:mo>-</mml:mo> | |
853 | <mml:infinity/> | |
854 | </mml:mrow> | |
855 | <mml:infinity/> | |
856 | </mml:mfenced> | |
857 | </mml:math></inlineequation> | |
858 | </entry> | |
859 | </row> | |
860 | <row> | |
861 | <entry align="left"> | |
862 | <constant>GL_POST_COLOR_MATRIX_BLUE_BIAS</constant> | |
863 | </entry> | |
864 | <entry align="center"> | |
865 | float | |
866 | </entry> | |
867 | <entry align="center"> | |
868 | 0 | |
869 | </entry> | |
870 | <entry align="center"> | |
871 | <inlineequation><mml:math> | |
872 | <!-- eqn: left ( -\(if, \(if right ):--> | |
873 | <mml:mfenced open="(" close=")"> | |
874 | <mml:mrow> | |
875 | <mml:mo>-</mml:mo> | |
876 | <mml:infinity/> | |
877 | </mml:mrow> | |
878 | <mml:infinity/> | |
879 | </mml:mfenced> | |
880 | </mml:math></inlineequation> | |
881 | </entry> | |
882 | </row> | |
883 | <row> | |
884 | <entry align="left"> | |
885 | <constant>GL_POST_COLOR_MATRIX_ALPHA_BIAS</constant> | |
886 | </entry> | |
887 | <entry align="center"> | |
888 | float | |
889 | </entry> | |
890 | <entry align="center"> | |
891 | 0 | |
892 | </entry> | |
893 | <entry align="center"> | |
894 | <inlineequation><mml:math> | |
895 | <!-- eqn: left ( -\(if, \(if right ):--> | |
896 | <mml:mfenced open="(" close=")"> | |
897 | <mml:mrow> | |
898 | <mml:mo>-</mml:mo> | |
899 | <mml:infinity/> | |
900 | </mml:mrow> | |
901 | <mml:infinity/> | |
902 | </mml:mfenced> | |
903 | </mml:math></inlineequation> | |
904 | </entry> | |
905 | </row> | |
906 | <row> | |
907 | <entry align="left"> | |
908 | <constant>GL_POST_CONVOLUTION_RED_SCALE</constant> | |
909 | </entry> | |
910 | <entry align="center"> | |
911 | float | |
912 | </entry> | |
913 | <entry align="center"> | |
914 | 1 | |
915 | </entry> | |
916 | <entry align="center"> | |
917 | <inlineequation><mml:math> | |
918 | <!-- eqn: left ( -\(if, \(if right ):--> | |
919 | <mml:mfenced open="(" close=")"> | |
920 | <mml:mrow> | |
921 | <mml:mo>-</mml:mo> | |
922 | <mml:infinity/> | |
923 | </mml:mrow> | |
924 | <mml:infinity/> | |
925 | </mml:mfenced> | |
926 | </mml:math></inlineequation> | |
927 | </entry> | |
928 | </row> | |
929 | <row> | |
930 | <entry align="left"> | |
931 | <constant>GL_POST_CONVOLUTION_GREEN_SCALE</constant> | |
932 | </entry> | |
933 | <entry align="center"> | |
934 | float | |
935 | </entry> | |
936 | <entry align="center"> | |
937 | 1 | |
938 | </entry> | |
939 | <entry align="center"> | |
940 | <inlineequation><mml:math> | |
941 | <!-- eqn: left ( -\(if, \(if right ):--> | |
942 | <mml:mfenced open="(" close=")"> | |
943 | <mml:mrow> | |
944 | <mml:mo>-</mml:mo> | |
945 | <mml:infinity/> | |
946 | </mml:mrow> | |
947 | <mml:infinity/> | |
948 | </mml:mfenced> | |
949 | </mml:math></inlineequation> | |
950 | </entry> | |
951 | </row> | |
952 | <row> | |
953 | <entry align="left"> | |
954 | <constant>GL_POST_CONVOLUTION_BLUE_SCALE</constant> | |
955 | </entry> | |
956 | <entry align="center"> | |
957 | float | |
958 | </entry> | |
959 | <entry align="center"> | |
960 | 1 | |
961 | </entry> | |
962 | <entry align="center"> | |
963 | <inlineequation><mml:math> | |
964 | <!-- eqn: left ( -\(if, \(if right ):--> | |
965 | <mml:mfenced open="(" close=")"> | |
966 | <mml:mrow> | |
967 | <mml:mo>-</mml:mo> | |
968 | <mml:infinity/> | |
969 | </mml:mrow> | |
970 | <mml:infinity/> | |
971 | </mml:mfenced> | |
972 | </mml:math></inlineequation> | |
973 | </entry> | |
974 | </row> | |
975 | <row> | |
976 | <entry align="left"> | |
977 | <constant>GL_POST_CONVOLUTION_ALPHA_SCALE</constant> | |
978 | </entry> | |
979 | <entry align="center"> | |
980 | float | |
981 | </entry> | |
982 | <entry align="center"> | |
983 | 1 | |
984 | </entry> | |
985 | <entry align="center"> | |
986 | <inlineequation><mml:math> | |
987 | <!-- eqn: left ( -\(if, \(if right ):--> | |
988 | <mml:mfenced open="(" close=")"> | |
989 | <mml:mrow> | |
990 | <mml:mo>-</mml:mo> | |
991 | <mml:infinity/> | |
992 | </mml:mrow> | |
993 | <mml:infinity/> | |
994 | </mml:mfenced> | |
995 | </mml:math></inlineequation> | |
996 | </entry> | |
997 | </row> | |
998 | <row> | |
999 | <entry align="left"> | |
1000 | <constant>GL_POST_CONVOLUTION_RED_BIAS</constant> | |
1001 | </entry> | |
1002 | <entry align="center"> | |
1003 | float | |
1004 | </entry> | |
1005 | <entry align="center"> | |
1006 | 0 | |
1007 | </entry> | |
1008 | <entry align="center"> | |
1009 | <inlineequation><mml:math> | |
1010 | <!-- eqn: left ( -\(if, \(if right ):--> | |
1011 | <mml:mfenced open="(" close=")"> | |
1012 | <mml:mrow> | |
1013 | <mml:mo>-</mml:mo> | |
1014 | <mml:infinity/> | |
1015 | </mml:mrow> | |
1016 | <mml:infinity/> | |
1017 | </mml:mfenced> | |
1018 | </mml:math></inlineequation> | |
1019 | </entry> | |
1020 | </row> | |
1021 | <row> | |
1022 | <entry align="left"> | |
1023 | <constant>GL_POST_CONVOLUTION_GREEN_BIAS</constant> | |
1024 | </entry> | |
1025 | <entry align="center"> | |
1026 | float | |
1027 | </entry> | |
1028 | <entry align="center"> | |
1029 | 0 | |
1030 | </entry> | |
1031 | <entry align="center"> | |
1032 | <inlineequation><mml:math> | |
1033 | <!-- eqn: left ( -\(if, \(if right ):--> | |
1034 | <mml:mfenced open="(" close=")"> | |
1035 | <mml:mrow> | |
1036 | <mml:mo>-</mml:mo> | |
1037 | <mml:infinity/> | |
1038 | </mml:mrow> | |
1039 | <mml:infinity/> | |
1040 | </mml:mfenced> | |
1041 | </mml:math></inlineequation> | |
1042 | </entry> | |
1043 | </row> | |
1044 | <row> | |
1045 | <entry align="left"> | |
1046 | <constant>GL_POST_CONVOLUTION_BLUE_BIAS</constant> | |
1047 | </entry> | |
1048 | <entry align="center"> | |
1049 | float | |
1050 | </entry> | |
1051 | <entry align="center"> | |
1052 | 0 | |
1053 | </entry> | |
1054 | <entry align="center"> | |
1055 | <inlineequation><mml:math> | |
1056 | <!-- eqn: left ( -\(if, \(if right ):--> | |
1057 | <mml:mfenced open="(" close=")"> | |
1058 | <mml:mrow> | |
1059 | <mml:mo>-</mml:mo> | |
1060 | <mml:infinity/> | |
1061 | </mml:mrow> | |
1062 | <mml:infinity/> | |
1063 | </mml:mfenced> | |
1064 | </mml:math></inlineequation> | |
1065 | </entry> | |
1066 | </row> | |
1067 | <row> | |
1068 | <entry align="left"> | |
1069 | <constant>GL_POST_CONVOLUTION_ALPHA_BIAS</constant> | |
1070 | </entry> | |
1071 | <entry align="center"> | |
1072 | float | |
1073 | </entry> | |
1074 | <entry align="center"> | |
1075 | 0 | |
1076 | </entry> | |
1077 | <entry align="center"> | |
1078 | <inlineequation><mml:math> | |
1079 | <!-- eqn: left ( -\(if, \(if right ):--> | |
1080 | <mml:mfenced open="(" close=")"> | |
1081 | <mml:mrow> | |
1082 | <mml:mo>-</mml:mo> | |
1083 | <mml:infinity/> | |
1084 | </mml:mrow> | |
1085 | <mml:infinity/> | |
1086 | </mml:mfenced> | |
1087 | </mml:math></inlineequation> | |
1088 | </entry> | |
1089 | </row> | |
1090 | </tbody> | |
1091 | </tgroup> | |
1092 | </informaltable> | |
1093 | <para> | |
1094 | <function>glPixelTransferf</function> can be used to set any pixel transfer parameter. | |
1095 | If the parameter type is boolean, | |
1096 | 0 implies false and any other value implies true. | |
1097 | If <parameter>pname</parameter> is an integer parameter, | |
1098 | <parameter>param</parameter> is rounded to the nearest integer. | |
1099 | </para> | |
1100 | <para> | |
1101 | Likewise, | |
1102 | <function>glPixelTransferi</function> can be used to set any of the | |
1103 | pixel transfer parameters. | |
1104 | Boolean parameters are set to false if <parameter>param</parameter> is 0 and to true otherwise. | |
1105 | <parameter>param</parameter> is converted to floating point before being assigned to real-valued parameters. | |
1106 | </para> | |
1107 | </refsect1> | |
1108 | <refsect1 id="notes"><title>Notes</title> | |
1109 | <para> | |
1110 | If a | |
1111 | <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>, | |
1112 | <citerefentry><refentrytitle>glColorSubTable</refentrytitle></citerefentry>, | |
1113 | <citerefentry><refentrytitle>glConvolutionFilter1D</refentrytitle></citerefentry>, | |
1114 | <citerefentry><refentrytitle>glConvolutionFilter2D</refentrytitle></citerefentry>, | |
1115 | <citerefentry><refentrytitle>glCopyPixels</refentrytitle></citerefentry>, | |
1116 | <citerefentry><refentrytitle>glCopyTexImage1D</refentrytitle></citerefentry>, | |
1117 | <citerefentry><refentrytitle>glCopyTexImage2D</refentrytitle></citerefentry>, | |
1118 | <citerefentry><refentrytitle>glCopyTexSubImage1D</refentrytitle></citerefentry>, | |
1119 | <citerefentry><refentrytitle>glCopyTexSubImage2D</refentrytitle></citerefentry>, | |
1120 | <citerefentry><refentrytitle>glCopyTexSubImage3D</refentrytitle></citerefentry>, | |
1121 | <citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry>, | |
1122 | <citerefentry><refentrytitle>glReadPixels</refentrytitle></citerefentry>, | |
1123 | <citerefentry><refentrytitle>glSeparableFilter2D</refentrytitle></citerefentry>, | |
1124 | <citerefentry><refentrytitle>glTexImage1D</refentrytitle></citerefentry>, | |
1125 | <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>, | |
1126 | <citerefentry><refentrytitle>glTexImage3D</refentrytitle></citerefentry>, | |
1127 | <citerefentry><refentrytitle>glTexSubImage1D</refentrytitle></citerefentry>, | |
1128 | <citerefentry><refentrytitle>glTexSubImage2D</refentrytitle></citerefentry>, or | |
1129 | <citerefentry><refentrytitle>glTexSubImage3D</refentrytitle></citerefentry> | |
1130 | command is placed in a display list | |
1131 | (see <citerefentry><refentrytitle>glNewList</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glCallList</refentrytitle></citerefentry>), | |
1132 | the pixel transfer mode settings in effect when the display list is | |
1133 | <emphasis>executed</emphasis> | |
1134 | are the ones that are used. | |
1135 | They may be different from the settings when the command was compiled | |
1136 | into the display list. | |
1137 | </para> | |
1138 | </refsect1> | |
1139 | <refsect1 id="errors"><title>Errors</title> | |
1140 | <para> | |
1141 | <constant>GL_INVALID_ENUM</constant> is generated if <parameter>pname</parameter> is not an accepted value. | |
1142 | </para> | |
1143 | <para> | |
1144 | <constant>GL_INVALID_OPERATION</constant> is generated if <function>glPixelTransfer</function> | |
1145 | is executed between the execution of <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry> | |
1146 | and the corresponding execution of <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>. | |
1147 | </para> | |
1148 | </refsect1> | |
1149 | <refsect1 id="associatedgets"><title>Associated Gets</title> | |
1150 | <para> | |
1151 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_MAP_COLOR</constant> | |
1152 | </para> | |
1153 | <para> | |
1154 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_MAP_STENCIL</constant> | |
1155 | </para> | |
1156 | <para> | |
1157 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_INDEX_SHIFT</constant> | |
1158 | </para> | |
1159 | <para> | |
1160 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_INDEX_OFFSET</constant> | |
1161 | </para> | |
1162 | <para> | |
1163 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_RED_SCALE</constant> | |
1164 | </para> | |
1165 | <para> | |
1166 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_RED_BIAS</constant> | |
1167 | </para> | |
1168 | <para> | |
1169 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_GREEN_SCALE</constant> | |
1170 | </para> | |
1171 | <para> | |
1172 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_GREEN_BIAS</constant> | |
1173 | </para> | |
1174 | <para> | |
1175 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_BLUE_SCALE</constant> | |
1176 | </para> | |
1177 | <para> | |
1178 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_BLUE_BIAS</constant> | |
1179 | </para> | |
1180 | <para> | |
1181 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_ALPHA_SCALE</constant> | |
1182 | </para> | |
1183 | <para> | |
1184 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_ALPHA_BIAS</constant> | |
1185 | </para> | |
1186 | <para> | |
1187 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_DEPTH_SCALE</constant> | |
1188 | </para> | |
1189 | <para> | |
1190 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_DEPTH_BIAS</constant> | |
1191 | </para> | |
1192 | <para> | |
1193 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_COLOR_MATRIX_RED_SCALE</constant> | |
1194 | </para> | |
1195 | <para> | |
1196 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_COLOR_MATRIX_RED_BIAS</constant> | |
1197 | </para> | |
1198 | <para> | |
1199 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_COLOR_MATRIX_GREEN_SCALE</constant> | |
1200 | </para> | |
1201 | <para> | |
1202 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_COLOR_MATRIX_GREEN_BIAS</constant> | |
1203 | </para> | |
1204 | <para> | |
1205 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_COLOR_MATRIX_BLUE_SCALE</constant> | |
1206 | </para> | |
1207 | <para> | |
1208 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_COLOR_MATRIX_BLUE_BIAS</constant> | |
1209 | </para> | |
1210 | <para> | |
1211 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_COLOR_MATRIX_ALPHA_SCALE</constant> | |
1212 | </para> | |
1213 | <para> | |
1214 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_COLOR_MATRIX_ALPHA_BIAS</constant> | |
1215 | </para> | |
1216 | <para> | |
1217 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_CONVOLUTION_RED_SCALE</constant> | |
1218 | </para> | |
1219 | <para> | |
1220 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_CONVOLUTION_RED_BIAS</constant> | |
1221 | </para> | |
1222 | <para> | |
1223 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_CONVOLUTION_GREEN_SCALE</constant> | |
1224 | </para> | |
1225 | <para> | |
1226 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_CONVOLUTION_GREEN_BIAS</constant> | |
1227 | </para> | |
1228 | <para> | |
1229 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_CONVOLUTION_BLUE_SCALE</constant> | |
1230 | </para> | |
1231 | <para> | |
1232 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_CONVOLUTION_BLUE_BIAS</constant> | |
1233 | </para> | |
1234 | <para> | |
1235 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_CONVOLUTION_ALPHA_SCALE</constant> | |
1236 | </para> | |
1237 | <para> | |
1238 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POST_CONVOLUTION_ALPHA_BIAS</constant> | |
1239 | </para> | |
1240 | </refsect1> | |
1241 | <refsect1 id="seealso"><title>See Also</title> | |
1242 | <para> | |
1243 | <citerefentry><refentrytitle>glCallList</refentrytitle></citerefentry>, | |
1244 | <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>, | |
1245 | <citerefentry><refentrytitle>glColorSubTable</refentrytitle></citerefentry>, | |
1246 | <citerefentry><refentrytitle>glConvolutionFilter1D</refentrytitle></citerefentry>, | |
1247 | <citerefentry><refentrytitle>glConvolutionFilter2D</refentrytitle></citerefentry>, | |
1248 | <citerefentry><refentrytitle>glCopyPixels</refentrytitle></citerefentry>, | |
1249 | <citerefentry><refentrytitle>glCopyTexImage1D</refentrytitle></citerefentry>, | |
1250 | <citerefentry><refentrytitle>glCopyTexImage2D</refentrytitle></citerefentry>, | |
1251 | <citerefentry><refentrytitle>glCopyTexSubImage1D</refentrytitle></citerefentry>, | |
1252 | <citerefentry><refentrytitle>glCopyTexSubImage2D</refentrytitle></citerefentry>, | |
1253 | <citerefentry><refentrytitle>glCopyTexSubImage3D</refentrytitle></citerefentry>, | |
1254 | <citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry>, | |
1255 | <citerefentry><refentrytitle>glNewList</refentrytitle></citerefentry>, | |
1256 | <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>, | |
1257 | <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>, | |
1258 | <citerefentry><refentrytitle>glPixelZoom</refentrytitle></citerefentry>, | |
1259 | <citerefentry><refentrytitle>glReadPixels</refentrytitle></citerefentry>, | |
1260 | <citerefentry><refentrytitle>glTexImage1D</refentrytitle></citerefentry>, | |
1261 | <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>, | |
1262 | <citerefentry><refentrytitle>glTexImage3D</refentrytitle></citerefentry>, | |
1263 | <citerefentry><refentrytitle>glTexSubImage1D</refentrytitle></citerefentry>, | |
1264 | <citerefentry><refentrytitle>glTexSubImage2D</refentrytitle></citerefentry>, | |
1265 | <citerefentry><refentrytitle>glTexSubImage3D</refentrytitle></citerefentry> | |
1266 | </para> | |
1267 | </refsect1> | |
1268 | <refsect1 id="Copyright"><title>Copyright</title> | |
1269 | <para> | |
1270 | Copyright <trademark class="copyright"></trademark> 1991-2006 | |
1271 | Silicon Graphics, Inc. This document is licensed under the SGI | |
1272 | Free Software B License. For details, see | |
1273 | <ulink url="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</ulink>. | |
1274 | </para> | |
1275 | </refsect1> | |
1276 | </refentry> |