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3 | <?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>glTexCoord</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /></head><body><div class="refentry" lang="en" xml:lang="en"><a id="glTexCoord"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glTexCoord — set the current texture coordinates</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1s</b>(</code></td><td>GLshort </td><td><var class="pdparam">s</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1i</b>(</code></td><td>GLint </td><td><var class="pdparam">s</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1f</b>(</code></td><td>GLfloat </td><td><var class="pdparam">s</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1d</b>(</code></td><td>GLdouble </td><td><var class="pdparam">s</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2s</b>(</code></td><td>GLshort </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLshort </td><td><var class="pdparam">t</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2i</b>(</code></td><td>GLint </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLint </td><td><var class="pdparam">t</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2f</b>(</code></td><td>GLfloat </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLfloat </td><td><var class="pdparam">t</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2d</b>(</code></td><td>GLdouble </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLdouble </td><td><var class="pdparam">t</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3s</b>(</code></td><td>GLshort </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLshort </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLshort </td><td><var class="pdparam">r</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3i</b>(</code></td><td>GLint </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLint </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLint </td><td><var class="pdparam">r</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3f</b>(</code></td><td>GLfloat </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLfloat </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLfloat </td><td><var class="pdparam">r</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3d</b>(</code></td><td>GLdouble </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLdouble </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLdouble </td><td><var class="pdparam">r</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4s</b>(</code></td><td>GLshort </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLshort </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLshort </td><td><var class="pdparam">r</var>, </td></tr><tr><td> </td><td>GLshort </td><td><var class="pdparam">q</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4i</b>(</code></td><td>GLint </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLint </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLint </td><td><var class="pdparam">r</var>, </td></tr><tr><td> </td><td>GLint </td><td><var class="pdparam">q</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4f</b>(</code></td><td>GLfloat </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLfloat </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLfloat </td><td><var class="pdparam">r</var>, </td></tr><tr><td> </td><td>GLfloat </td><td><var class="pdparam">q</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4d</b>(</code></td><td>GLdouble </td><td><var class="pdparam">s</var>, </td></tr><tr><td> </td><td>GLdouble </td><td><var class="pdparam">t</var>, </td></tr><tr><td> </td><td>GLdouble </td><td><var class="pdparam">r</var>, </td></tr><tr><td> </td><td>GLdouble </td><td><var class="pdparam">q</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>s</code></em>, </span><span class="term"><em class="parameter"><code>t</code></em>, </span><span class="term"><em class="parameter"><code>r</code></em>, </span><span class="term"><em class="parameter"><code>q</code></em></span></dt><dd><p> | |
4 | Specify <span class="emphasis"><em>s</em></span>, <span class="emphasis"><em>t</em></span>, <span class="emphasis"><em>r</em></span>, and <span class="emphasis"><em>q</em></span> texture coordinates. | |
5 | Not all parameters are present in all forms of the command. | |
6 | </p></dd></dl></div></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1sv</b>(</code></td><td>const GLshort * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1iv</b>(</code></td><td>const GLint * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1fv</b>(</code></td><td>const GLfloat * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord1dv</b>(</code></td><td>const GLdouble * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2sv</b>(</code></td><td>const GLshort * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2iv</b>(</code></td><td>const GLint * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2fv</b>(</code></td><td>const GLfloat * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord2dv</b>(</code></td><td>const GLdouble * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3sv</b>(</code></td><td>const GLshort * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3iv</b>(</code></td><td>const GLint * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3fv</b>(</code></td><td>const GLfloat * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord3dv</b>(</code></td><td>const GLdouble * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4sv</b>(</code></td><td>const GLshort * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4iv</b>(</code></td><td>const GLint * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4fv</b>(</code></td><td>const GLfloat * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glTexCoord4dv</b>(</code></td><td>const GLdouble * </td><td><var class="pdparam">v</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters2"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>v</code></em></span></dt><dd><p> | |
7 | Specifies a pointer to an array of one, two, three, or four elements, | |
8 | which in turn specify the | |
9 | <span class="emphasis"><em>s</em></span>, | |
10 | <span class="emphasis"><em>t</em></span>, | |
11 | <span class="emphasis"><em>r</em></span>, and | |
12 | <span class="emphasis"><em>q</em></span> texture coordinates. | |
13 | </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p> | |
14 | <code class="function">glTexCoord</code> specifies texture coordinates in | |
15 | one, | |
16 | two, | |
17 | three, or | |
18 | four dimensions. | |
19 | <code class="function">glTexCoord1</code> sets the current texture coordinates to | |
20 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
21 | ||
22 | <mml:mfenced open="(" close=")"> | |
23 | <mml:mi mathvariant="italic">s</mml:mi> | |
24 | <mml:mn>0</mml:mn> | |
25 | <mml:mn>0</mml:mn> | |
26 | <mml:mn>1</mml:mn> | |
27 | </mml:mfenced> | |
28 | </mml:math>; | |
29 | a call to | |
30 | <code class="function">glTexCoord2</code> sets them to | |
31 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
32 | ||
33 | <mml:mfenced open="(" close=")"> | |
34 | <mml:mi mathvariant="italic">s</mml:mi> | |
35 | <mml:mi mathvariant="italic">t</mml:mi> | |
36 | <mml:mn>0</mml:mn> | |
37 | <mml:mn>1</mml:mn> | |
38 | </mml:mfenced> | |
39 | </mml:math>. | |
40 | Similarly, <code class="function">glTexCoord3</code> specifies the texture coordinates as | |
41 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
42 | ||
43 | <mml:mfenced open="(" close=")"> | |
44 | <mml:mi mathvariant="italic">s</mml:mi> | |
45 | <mml:mi mathvariant="italic">t</mml:mi> | |
46 | <mml:mi mathvariant="italic">r</mml:mi> | |
47 | <mml:mn>1</mml:mn> | |
48 | </mml:mfenced> | |
49 | </mml:math>, | |
50 | and | |
51 | <code class="function">glTexCoord4</code> defines all four components explicitly as | |
52 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
53 | ||
54 | <mml:mfenced open="(" close=")"> | |
55 | <mml:mi mathvariant="italic">s</mml:mi> | |
56 | <mml:mi mathvariant="italic">t</mml:mi> | |
57 | <mml:mi mathvariant="italic">r</mml:mi> | |
58 | <mml:mi mathvariant="italic">q</mml:mi> | |
59 | </mml:mfenced> | |
60 | </mml:math>. | |
61 | </p><p> | |
62 | The current texture coordinates are part of the data | |
63 | that is associated with each vertex and with the current | |
64 | raster position. | |
65 | Initially, the values for | |
66 | <span class="emphasis"><em>s</em></span>, | |
67 | <span class="emphasis"><em>t</em></span>, | |
68 | <span class="emphasis"><em>r</em></span>, and | |
69 | <span class="emphasis"><em>q</em></span> | |
70 | are (0, 0, 0, 1). | |
71 | </p><p> | |
72 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="notes"></a><h2>Notes</h2><p> | |
73 | The current texture coordinates can be updated at any time. | |
74 | In particular, | |
75 | <code class="function">glTexCoord</code> can be called between a call to <a class="citerefentry" href="glBegin.xml"><span class="citerefentry"><span class="refentrytitle">glBegin</span></span></a> and the corresponding | |
76 | call to <a class="citerefentry" href="glEnd.xml"><span class="citerefentry"><span class="refentrytitle">glEnd</span></span></a>. | |
77 | </p><p> | |
78 | When the <code class="code">ARB_imaging</code> extension is supported, <code class="function">glTexCoord</code> always | |
79 | updates texture unit <code class="constant">GL_TEXTURE0</code>. | |
80 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="associatedgets"></a><h2>Associated Gets</h2><p> | |
81 | <a class="citerefentry" href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_CURRENT_TEXTURE_COORDS</code> | |
82 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p> | |
83 | <a class="citerefentry" href="glMultiTexCoord.xml"><span class="citerefentry"><span class="refentrytitle">glMultiTexCoord</span></span></a>, | |
84 | <code class="function">glTexCoordPointer</code>, | |
85 | <a class="citerefentry" href="glVertex.xml"><span class="citerefentry"><span class="refentrytitle">glVertex</span></span></a> | |
86 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p> | |
87 | Copyright <span class="trademark"></span>© 1991-2006 | |
88 | Silicon Graphics, Inc. This document is licensed under the SGI | |
89 | Free Software B License. For details, see | |
90 | <a class="ulink" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>. | |
91 | </p></div></div></body></html> |