Commit | Line | Data |
---|---|---|
7faf1d71 AW |
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="glTexCoord"> | |
5 | <refmeta> | |
6 | <refmetainfo> | |
7 | <copyright> | |
8 | <year>1991-2006</year> | |
9 | <holder>Silicon Graphics, Inc.</holder> | |
10 | </copyright> | |
11 | </refmetainfo> | |
12 | <refentrytitle>glTexCoord</refentrytitle> | |
13 | <manvolnum>3G</manvolnum> | |
14 | </refmeta> | |
15 | <refnamediv> | |
16 | <refname>glTexCoord</refname> | |
17 | <refpurpose>set the current texture coordinates</refpurpose> | |
18 | </refnamediv> | |
19 | <refsynopsisdiv><title>C Specification</title> | |
20 | <funcsynopsis> | |
21 | <funcprototype> | |
22 | <funcdef>void <function>glTexCoord1s</function></funcdef> | |
23 | <paramdef>GLshort <parameter>s</parameter></paramdef> | |
24 | </funcprototype> | |
25 | </funcsynopsis> | |
26 | <funcsynopsis> | |
27 | <funcprototype> | |
28 | <funcdef>void <function>glTexCoord1i</function></funcdef> | |
29 | <paramdef>GLint <parameter>s</parameter></paramdef> | |
30 | </funcprototype> | |
31 | </funcsynopsis> | |
32 | <funcsynopsis> | |
33 | <funcprototype> | |
34 | <funcdef>void <function>glTexCoord1f</function></funcdef> | |
35 | <paramdef>GLfloat <parameter>s</parameter></paramdef> | |
36 | </funcprototype> | |
37 | </funcsynopsis> | |
38 | <funcsynopsis> | |
39 | <funcprototype> | |
40 | <funcdef>void <function>glTexCoord1d</function></funcdef> | |
41 | <paramdef>GLdouble <parameter>s</parameter></paramdef> | |
42 | </funcprototype> | |
43 | </funcsynopsis> | |
44 | <funcsynopsis> | |
45 | <funcprototype> | |
46 | <funcdef>void <function>glTexCoord2s</function></funcdef> | |
47 | <paramdef>GLshort <parameter>s</parameter></paramdef> | |
48 | <paramdef>GLshort <parameter>t</parameter></paramdef> | |
49 | </funcprototype> | |
50 | </funcsynopsis> | |
51 | <funcsynopsis> | |
52 | <funcprototype> | |
53 | <funcdef>void <function>glTexCoord2i</function></funcdef> | |
54 | <paramdef>GLint <parameter>s</parameter></paramdef> | |
55 | <paramdef>GLint <parameter>t</parameter></paramdef> | |
56 | </funcprototype> | |
57 | </funcsynopsis> | |
58 | <funcsynopsis> | |
59 | <funcprototype> | |
60 | <funcdef>void <function>glTexCoord2f</function></funcdef> | |
61 | <paramdef>GLfloat <parameter>s</parameter></paramdef> | |
62 | <paramdef>GLfloat <parameter>t</parameter></paramdef> | |
63 | </funcprototype> | |
64 | </funcsynopsis> | |
65 | <funcsynopsis> | |
66 | <funcprototype> | |
67 | <funcdef>void <function>glTexCoord2d</function></funcdef> | |
68 | <paramdef>GLdouble <parameter>s</parameter></paramdef> | |
69 | <paramdef>GLdouble <parameter>t</parameter></paramdef> | |
70 | </funcprototype> | |
71 | </funcsynopsis> | |
72 | <funcsynopsis> | |
73 | <funcprototype> | |
74 | <funcdef>void <function>glTexCoord3s</function></funcdef> | |
75 | <paramdef>GLshort <parameter>s</parameter></paramdef> | |
76 | <paramdef>GLshort <parameter>t</parameter></paramdef> | |
77 | <paramdef>GLshort <parameter>r</parameter></paramdef> | |
78 | </funcprototype> | |
79 | </funcsynopsis> | |
80 | <funcsynopsis> | |
81 | <funcprototype> | |
82 | <funcdef>void <function>glTexCoord3i</function></funcdef> | |
83 | <paramdef>GLint <parameter>s</parameter></paramdef> | |
84 | <paramdef>GLint <parameter>t</parameter></paramdef> | |
85 | <paramdef>GLint <parameter>r</parameter></paramdef> | |
86 | </funcprototype> | |
87 | </funcsynopsis> | |
88 | <funcsynopsis> | |
89 | <funcprototype> | |
90 | <funcdef>void <function>glTexCoord3f</function></funcdef> | |
91 | <paramdef>GLfloat <parameter>s</parameter></paramdef> | |
92 | <paramdef>GLfloat <parameter>t</parameter></paramdef> | |
93 | <paramdef>GLfloat <parameter>r</parameter></paramdef> | |
94 | </funcprototype> | |
95 | </funcsynopsis> | |
96 | <funcsynopsis> | |
97 | <funcprototype> | |
98 | <funcdef>void <function>glTexCoord3d</function></funcdef> | |
99 | <paramdef>GLdouble <parameter>s</parameter></paramdef> | |
100 | <paramdef>GLdouble <parameter>t</parameter></paramdef> | |
101 | <paramdef>GLdouble <parameter>r</parameter></paramdef> | |
102 | </funcprototype> | |
103 | </funcsynopsis> | |
104 | <funcsynopsis> | |
105 | <funcprototype> | |
106 | <funcdef>void <function>glTexCoord4s</function></funcdef> | |
107 | <paramdef>GLshort <parameter>s</parameter></paramdef> | |
108 | <paramdef>GLshort <parameter>t</parameter></paramdef> | |
109 | <paramdef>GLshort <parameter>r</parameter></paramdef> | |
110 | <paramdef>GLshort <parameter>q</parameter></paramdef> | |
111 | </funcprototype> | |
112 | </funcsynopsis> | |
113 | <funcsynopsis> | |
114 | <funcprototype> | |
115 | <funcdef>void <function>glTexCoord4i</function></funcdef> | |
116 | <paramdef>GLint <parameter>s</parameter></paramdef> | |
117 | <paramdef>GLint <parameter>t</parameter></paramdef> | |
118 | <paramdef>GLint <parameter>r</parameter></paramdef> | |
119 | <paramdef>GLint <parameter>q</parameter></paramdef> | |
120 | </funcprototype> | |
121 | </funcsynopsis> | |
122 | <funcsynopsis> | |
123 | <funcprototype> | |
124 | <funcdef>void <function>glTexCoord4f</function></funcdef> | |
125 | <paramdef>GLfloat <parameter>s</parameter></paramdef> | |
126 | <paramdef>GLfloat <parameter>t</parameter></paramdef> | |
127 | <paramdef>GLfloat <parameter>r</parameter></paramdef> | |
128 | <paramdef>GLfloat <parameter>q</parameter></paramdef> | |
129 | </funcprototype> | |
130 | </funcsynopsis> | |
131 | <funcsynopsis> | |
132 | <funcprototype> | |
133 | <funcdef>void <function>glTexCoord4d</function></funcdef> | |
134 | <paramdef>GLdouble <parameter>s</parameter></paramdef> | |
135 | <paramdef>GLdouble <parameter>t</parameter></paramdef> | |
136 | <paramdef>GLdouble <parameter>r</parameter></paramdef> | |
137 | <paramdef>GLdouble <parameter>q</parameter></paramdef> | |
138 | </funcprototype> | |
139 | </funcsynopsis> | |
140 | </refsynopsisdiv> | |
141 | <refsect1 id="parameters"><title>Parameters</title> | |
142 | <variablelist> | |
143 | <varlistentry> | |
144 | <term><parameter>s</parameter></term> | |
145 | <term><parameter>t</parameter></term> | |
146 | <term><parameter>r</parameter></term> | |
147 | <term><parameter>q</parameter></term> | |
148 | <listitem> | |
149 | <para> | |
150 | Specify <emphasis>s</emphasis>, <emphasis>t</emphasis>, <emphasis>r</emphasis>, and <emphasis>q</emphasis> texture coordinates. | |
151 | Not all parameters are present in all forms of the command. | |
152 | </para> | |
153 | </listitem> | |
154 | </varlistentry> | |
155 | </variablelist> | |
156 | </refsect1> | |
157 | <refsynopsisdiv><title>C Specification</title> | |
158 | <funcsynopsis> | |
159 | <funcprototype> | |
160 | <funcdef>void <function>glTexCoord1sv</function></funcdef> | |
161 | <paramdef>const GLshort * <parameter>v</parameter></paramdef> | |
162 | </funcprototype> | |
163 | </funcsynopsis> | |
164 | <funcsynopsis> | |
165 | <funcprototype> | |
166 | <funcdef>void <function>glTexCoord1iv</function></funcdef> | |
167 | <paramdef>const GLint * <parameter>v</parameter></paramdef> | |
168 | </funcprototype> | |
169 | </funcsynopsis> | |
170 | <funcsynopsis> | |
171 | <funcprototype> | |
172 | <funcdef>void <function>glTexCoord1fv</function></funcdef> | |
173 | <paramdef>const GLfloat * <parameter>v</parameter></paramdef> | |
174 | </funcprototype> | |
175 | </funcsynopsis> | |
176 | <funcsynopsis> | |
177 | <funcprototype> | |
178 | <funcdef>void <function>glTexCoord1dv</function></funcdef> | |
179 | <paramdef>const GLdouble * <parameter>v</parameter></paramdef> | |
180 | </funcprototype> | |
181 | </funcsynopsis> | |
182 | <funcsynopsis> | |
183 | <funcprototype> | |
184 | <funcdef>void <function>glTexCoord2sv</function></funcdef> | |
185 | <paramdef>const GLshort * <parameter>v</parameter></paramdef> | |
186 | </funcprototype> | |
187 | </funcsynopsis> | |
188 | <funcsynopsis> | |
189 | <funcprototype> | |
190 | <funcdef>void <function>glTexCoord2iv</function></funcdef> | |
191 | <paramdef>const GLint * <parameter>v</parameter></paramdef> | |
192 | </funcprototype> | |
193 | </funcsynopsis> | |
194 | <funcsynopsis> | |
195 | <funcprototype> | |
196 | <funcdef>void <function>glTexCoord2fv</function></funcdef> | |
197 | <paramdef>const GLfloat * <parameter>v</parameter></paramdef> | |
198 | </funcprototype> | |
199 | </funcsynopsis> | |
200 | <funcsynopsis> | |
201 | <funcprototype> | |
202 | <funcdef>void <function>glTexCoord2dv</function></funcdef> | |
203 | <paramdef>const GLdouble * <parameter>v</parameter></paramdef> | |
204 | </funcprototype> | |
205 | </funcsynopsis> | |
206 | <funcsynopsis> | |
207 | <funcprototype> | |
208 | <funcdef>void <function>glTexCoord3sv</function></funcdef> | |
209 | <paramdef>const GLshort * <parameter>v</parameter></paramdef> | |
210 | </funcprototype> | |
211 | </funcsynopsis> | |
212 | <funcsynopsis> | |
213 | <funcprototype> | |
214 | <funcdef>void <function>glTexCoord3iv</function></funcdef> | |
215 | <paramdef>const GLint * <parameter>v</parameter></paramdef> | |
216 | </funcprototype> | |
217 | </funcsynopsis> | |
218 | <funcsynopsis> | |
219 | <funcprototype> | |
220 | <funcdef>void <function>glTexCoord3fv</function></funcdef> | |
221 | <paramdef>const GLfloat * <parameter>v</parameter></paramdef> | |
222 | </funcprototype> | |
223 | </funcsynopsis> | |
224 | <funcsynopsis> | |
225 | <funcprototype> | |
226 | <funcdef>void <function>glTexCoord3dv</function></funcdef> | |
227 | <paramdef>const GLdouble * <parameter>v</parameter></paramdef> | |
228 | </funcprototype> | |
229 | </funcsynopsis> | |
230 | <funcsynopsis> | |
231 | <funcprototype> | |
232 | <funcdef>void <function>glTexCoord4sv</function></funcdef> | |
233 | <paramdef>const GLshort * <parameter>v</parameter></paramdef> | |
234 | </funcprototype> | |
235 | </funcsynopsis> | |
236 | <funcsynopsis> | |
237 | <funcprototype> | |
238 | <funcdef>void <function>glTexCoord4iv</function></funcdef> | |
239 | <paramdef>const GLint * <parameter>v</parameter></paramdef> | |
240 | </funcprototype> | |
241 | </funcsynopsis> | |
242 | <funcsynopsis> | |
243 | <funcprototype> | |
244 | <funcdef>void <function>glTexCoord4fv</function></funcdef> | |
245 | <paramdef>const GLfloat * <parameter>v</parameter></paramdef> | |
246 | </funcprototype> | |
247 | </funcsynopsis> | |
248 | <funcsynopsis> | |
249 | <funcprototype> | |
250 | <funcdef>void <function>glTexCoord4dv</function></funcdef> | |
251 | <paramdef>const GLdouble * <parameter>v</parameter></paramdef> | |
252 | </funcprototype> | |
253 | </funcsynopsis> | |
254 | </refsynopsisdiv> | |
255 | <refsect1 id="parameters2"><title>Parameters</title> | |
256 | <variablelist> | |
257 | <varlistentry> | |
258 | <term><parameter>v</parameter></term> | |
259 | <listitem> | |
260 | <para> | |
261 | Specifies a pointer to an array of one, two, three, or four elements, | |
262 | which in turn specify the | |
263 | <emphasis>s</emphasis>, | |
264 | <emphasis>t</emphasis>, | |
265 | <emphasis>r</emphasis>, and | |
266 | <emphasis>q</emphasis> texture coordinates. | |
267 | </para> | |
268 | </listitem> | |
269 | </varlistentry> | |
270 | </variablelist> | |
271 | </refsect1> | |
272 | <refsect1 id="description"><title>Description</title> | |
273 | <para> | |
274 | <function>glTexCoord</function> specifies texture coordinates in | |
275 | one, | |
276 | two, | |
277 | three, or | |
278 | four dimensions. | |
279 | <function>glTexCoord1</function> sets the current texture coordinates to | |
280 | <inlineequation><mml:math> | |
281 | <!-- eqn: (s, 0, 0, 1):--> | |
282 | <mml:mfenced open="(" close=")"> | |
283 | <mml:mi mathvariant="italic">s</mml:mi> | |
284 | <mml:mn>0</mml:mn> | |
285 | <mml:mn>0</mml:mn> | |
286 | <mml:mn>1</mml:mn> | |
287 | </mml:mfenced> | |
288 | </mml:math></inlineequation>; | |
289 | a call to | |
290 | <function>glTexCoord2</function> sets them to | |
291 | <inlineequation><mml:math> | |
292 | <!-- eqn: (s, t, 0, 1):--> | |
293 | <mml:mfenced open="(" close=")"> | |
294 | <mml:mi mathvariant="italic">s</mml:mi> | |
295 | <mml:mi mathvariant="italic">t</mml:mi> | |
296 | <mml:mn>0</mml:mn> | |
297 | <mml:mn>1</mml:mn> | |
298 | </mml:mfenced> | |
299 | </mml:math></inlineequation>. | |
300 | Similarly, <function>glTexCoord3</function> specifies the texture coordinates as | |
301 | <inlineequation><mml:math> | |
302 | <!-- eqn: (s, t, r, 1):--> | |
303 | <mml:mfenced open="(" close=")"> | |
304 | <mml:mi mathvariant="italic">s</mml:mi> | |
305 | <mml:mi mathvariant="italic">t</mml:mi> | |
306 | <mml:mi mathvariant="italic">r</mml:mi> | |
307 | <mml:mn>1</mml:mn> | |
308 | </mml:mfenced> | |
309 | </mml:math></inlineequation>, | |
310 | and | |
311 | <function>glTexCoord4</function> defines all four components explicitly as | |
312 | <inlineequation><mml:math> | |
313 | <!-- eqn: (s, t, r, q):--> | |
314 | <mml:mfenced open="(" close=")"> | |
315 | <mml:mi mathvariant="italic">s</mml:mi> | |
316 | <mml:mi mathvariant="italic">t</mml:mi> | |
317 | <mml:mi mathvariant="italic">r</mml:mi> | |
318 | <mml:mi mathvariant="italic">q</mml:mi> | |
319 | </mml:mfenced> | |
320 | </mml:math></inlineequation>. | |
321 | </para> | |
322 | <para> | |
323 | The current texture coordinates are part of the data | |
324 | that is associated with each vertex and with the current | |
325 | raster position. | |
326 | Initially, the values for | |
327 | <emphasis>s</emphasis>, | |
328 | <emphasis>t</emphasis>, | |
329 | <emphasis>r</emphasis>, and | |
330 | <emphasis>q</emphasis> | |
331 | are (0, 0, 0, 1). | |
332 | </para> | |
333 | <para> | |
334 | </para> | |
335 | </refsect1> | |
336 | <refsect1 id="notes"><title>Notes</title> | |
337 | <para> | |
338 | The current texture coordinates can be updated at any time. | |
339 | In particular, | |
340 | <function>glTexCoord</function> can be called between a call to <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry> and the corresponding | |
341 | call to <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>. | |
342 | </para> | |
343 | <para> | |
344 | When the <code>ARB_imaging</code> extension is supported, <function>glTexCoord</function> always | |
345 | updates texture unit <constant>GL_TEXTURE0</constant>. | |
346 | </para> | |
347 | </refsect1> | |
348 | <refsect1 id="associatedgets"><title>Associated Gets</title> | |
349 | <para> | |
350 | <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_TEXTURE_COORDS</constant> | |
351 | </para> | |
352 | </refsect1> | |
353 | <refsect1 id="seealso"><title>See Also</title> | |
354 | <para> | |
355 | <citerefentry><refentrytitle>glMultiTexCoord</refentrytitle></citerefentry>, | |
356 | <function>glTexCoordPointer</function>, | |
357 | <citerefentry><refentrytitle>glVertex</refentrytitle></citerefentry> | |
358 | </para> | |
359 | </refsect1> | |
360 | <refsect1 id="Copyright"><title>Copyright</title> | |
361 | <para> | |
362 | Copyright <trademark class="copyright"></trademark> 1991-2006 | |
363 | Silicon Graphics, Inc. This document is licensed under the SGI | |
364 | Free Software B License. For details, see | |
365 | <ulink url="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</ulink>. | |
366 | </para> | |
367 | </refsect1> | |
368 | </refentry> |