Commit | Line | Data |
---|---|---|
7faf1d71 AW |
1 | <?xml version="1.0" encoding="UTF-8"?> |
2 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd"> | |
3 | <!-- saved from url=(0013)about:internet --> | |
4 | <?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>glTexEnv</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /></head><body><div class="refentry" title="glTexEnv"><a id="glTexEnv"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glTexEnv — set texture environment parameters</p></div><div class="refsynopsisdiv" title="C Specification"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">void <b class="fsfunc">glTexEnvf</b>(</code></td><td>GLenum <var class="pdparam">target</var>, </td></tr><tr><td> </td><td>GLenum <var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>GLfloat <var class="pdparam">param</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div><p></p><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">void <b class="fsfunc">glTexEnvi</b>(</code></td><td>GLenum <var class="pdparam">target</var>, </td></tr><tr><td> </td><td>GLenum <var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>GLint <var class="pdparam">param</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Parameters"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>target</code></em></span></dt><dd><p> | |
5 | Specifies a texture environment. | |
6 | May be <code class="constant">GL_TEXTURE_ENV</code>, <code class="constant">GL_TEXTURE_FILTER_CONTROL</code> or <code class="constant">GL_POINT_SPRITE</code>. | |
7 | </p></dd><dt><span class="term"><em class="parameter"><code>pname</code></em></span></dt><dd><p> | |
8 | Specifies the symbolic name of a single-valued texture environment parameter. | |
9 | May be either <code class="constant">GL_TEXTURE_ENV_MODE</code>, <code class="constant">GL_TEXTURE_LOD_BIAS</code>, | |
10 | <code class="constant">GL_COMBINE_RGB</code>, | |
11 | <code class="constant">GL_COMBINE_ALPHA</code>, | |
12 | <code class="constant">GL_SRC0_RGB</code>, | |
13 | <code class="constant">GL_SRC1_RGB</code>, | |
14 | <code class="constant">GL_SRC2_RGB</code>, | |
15 | <code class="constant">GL_SRC0_ALPHA</code>, | |
16 | <code class="constant">GL_SRC1_ALPHA</code>, | |
17 | <code class="constant">GL_SRC2_ALPHA</code>, | |
18 | <code class="constant">GL_OPERAND0_RGB</code>, | |
19 | <code class="constant">GL_OPERAND1_RGB</code>, | |
20 | <code class="constant">GL_OPERAND2_RGB</code>, | |
21 | <code class="constant">GL_OPERAND0_ALPHA</code>, | |
22 | <code class="constant">GL_OPERAND1_ALPHA</code>, | |
23 | <code class="constant">GL_OPERAND2_ALPHA</code>, | |
24 | <code class="constant">GL_RGB_SCALE</code>, | |
25 | <code class="constant">GL_ALPHA_SCALE</code>, or | |
26 | <code class="constant">GL_COORD_REPLACE</code>. | |
27 | </p></dd><dt><span class="term"><em class="parameter"><code>param</code></em></span></dt><dd><p> | |
28 | Specifies a single symbolic constant, one of <code class="constant">GL_ADD</code>, | |
29 | <code class="constant">GL_ADD_SIGNED</code>, <code class="constant">GL_INTERPOLATE</code>, <code class="constant">GL_MODULATE</code>, <code class="constant">GL_DECAL</code>, | |
30 | <code class="constant">GL_BLEND</code>, <code class="constant">GL_REPLACE</code>, <code class="constant">GL_SUBTRACT</code>, <code class="constant">GL_COMBINE</code>, | |
31 | <code class="constant">GL_TEXTURE</code>, <code class="constant">GL_CONSTANT</code>, <code class="constant">GL_PRIMARY_COLOR</code>, <code class="constant">GL_PREVIOUS</code>, | |
32 | <code class="constant">GL_SRC_COLOR</code>, <code class="constant">GL_ONE_MINUS_SRC_COLOR</code>, <code class="constant">GL_SRC_ALPHA</code>, | |
33 | <code class="constant">GL_ONE_MINUS_SRC_ALPHA</code>, | |
34 | a single boolean value for the point sprite texture coordinate replacement, | |
35 | a single floating-point value for the texture level-of-detail bias, | |
36 | or 1.0, 2.0, or 4.0 when specifying the <code class="constant">GL_RGB_SCALE</code> or <code class="constant">GL_ALPHA_SCALE</code>. | |
37 | </p></dd></dl></div></div><div class="refsynopsisdiv" title="C Specification"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">void <b class="fsfunc">glTexEnvfv</b>(</code></td><td>GLenum <var class="pdparam">target</var>, </td></tr><tr><td> </td><td>GLenum <var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>const GLfloat * <var class="pdparam">params</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">void <b class="fsfunc">glTexEnviv</b>(</code></td><td>GLenum <var class="pdparam">target</var>, </td></tr><tr><td> </td><td>GLenum <var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>const GLint * <var class="pdparam">params</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Parameters"><a id="parameters2"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>target</code></em></span></dt><dd><p> | |
38 | Specifies a texture environment. | |
39 | May be either <code class="constant">GL_TEXTURE_ENV</code>, or <code class="constant">GL_TEXTURE_FILTER_CONTROL</code>. | |
40 | </p></dd><dt><span class="term"><em class="parameter"><code>pname</code></em></span></dt><dd><p> | |
41 | Specifies the symbolic name of a texture environment parameter. | |
42 | Accepted values are <code class="constant">GL_TEXTURE_ENV_MODE</code>, <code class="constant">GL_TEXTURE_ENV_COLOR</code>, or | |
43 | <code class="constant">GL_TEXTURE_LOD_BIAS</code>. | |
44 | </p></dd><dt><span class="term"><em class="parameter"><code>params</code></em></span></dt><dd><p> | |
45 | Specifies a pointer to a parameter array that contains | |
46 | either a single symbolic constant, single floating-point number, or an RGBA | |
47 | color. | |
48 | </p></dd></dl></div></div><div class="refsect1" title="Description"><a id="description"></a><h2>Description</h2><p> | |
49 | A texture environment specifies how texture values are interpreted when a | |
50 | fragment is textured. When <em class="parameter"><code>target</code></em> is <code class="constant">GL_TEXTURE_FILTER_CONTROL</code>, | |
51 | <em class="parameter"><code>pname</code></em> must be <code class="constant">GL_TEXTURE_LOD_BIAS</code>. When <em class="parameter"><code>target</code></em> is | |
52 | <code class="constant">GL_TEXTURE_ENV</code>, <em class="parameter"><code>pname</code></em> can be <code class="constant">GL_TEXTURE_ENV_MODE</code>, | |
53 | <code class="constant">GL_TEXTURE_ENV_COLOR</code>, <code class="constant">GL_COMBINE_RGB</code>, <code class="constant">GL_COMBINE_ALPHA</code>, | |
54 | <code class="constant">GL_RGB_SCALE</code>, <code class="constant">GL_ALPHA_SCALE</code>, | |
55 | <code class="constant">GL_SRC0_RGB</code>, <code class="constant">GL_SRC1_RGB</code>, <code class="constant">GL_SRC2_RGB</code>, | |
56 | <code class="constant">GL_SRC0_ALPHA</code>, <code class="constant">GL_SRC1_ALPHA</code>, or <code class="constant">GL_SRC2_ALPHA</code>. | |
57 | </p><p> | |
58 | If <em class="parameter"><code>pname</code></em> is <code class="constant">GL_TEXTURE_ENV_MODE</code>, | |
59 | then <em class="parameter"><code>params</code></em> is (or points to) the symbolic name of a texture function. | |
60 | Six texture functions may be specified: | |
61 | <code class="constant">GL_ADD</code>, | |
62 | <code class="constant">GL_MODULATE</code>, | |
63 | <code class="constant">GL_DECAL</code>, | |
64 | <code class="constant">GL_BLEND</code>, | |
65 | <code class="constant">GL_REPLACE</code>, or | |
66 | <code class="constant">GL_COMBINE</code>. | |
67 | </p><p> | |
68 | The following table shows the correspondence of filtered texture | |
69 | values | |
70 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">R</mml:mi> | |
71 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
72 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">G</mml:mi> | |
73 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
74 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">B</mml:mi> | |
75 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
76 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
77 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
78 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">L</mml:mi> | |
79 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
80 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">I</mml:mi> | |
81 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math> | |
82 | to texture source components. | |
83 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
84 | <mml:mi mathvariant="italic">s</mml:mi></mml:msub></mml:math> | |
85 | and | |
86 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
87 | <mml:mi mathvariant="italic">s</mml:mi></mml:msub></mml:math> | |
88 | are used by the texture functions described below. | |
89 | </p><p> | |
90 | </p><div class="informaltable"><table border="1"><colgroup><col align="left" /><col align="left" /><col /></colgroup><thead><tr><th align="left"> | |
91 | Texture Base Internal Format | |
92 | </th><th align="center"> | |
93 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="bold-italic">C</mml:mi> | |
94 | <mml:mi mathvariant="italic">s</mml:mi></mml:msub></mml:math> | |
95 | </th><th align="center"> | |
96 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="bold-italic">A</mml:mi> | |
97 | <mml:mi mathvariant="italic">s</mml:mi></mml:msub></mml:math> | |
98 | </th></tr></thead><tbody><tr><td align="left"> | |
99 | <code class="constant">GL_ALPHA</code> | |
100 | </td><td align="left"> | |
101 | (0, 0, 0) | |
102 | </td><td align="left"> | |
103 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
104 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math> | |
105 | </td></tr><tr><td align="left"> | |
106 | <code class="constant">GL_LUMINANCE</code> | |
107 | </td><td align="left"> | |
108 | ( | |
109 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">L</mml:mi> | |
110 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
111 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">L</mml:mi> | |
112 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
113 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">L</mml:mi> | |
114 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math> | |
115 | ) | |
116 | </td><td align="left"> | |
117 | 1 | |
118 | </td></tr><tr><td align="left"> | |
119 | <code class="constant">GL_LUMINANCE_ALPHA</code> | |
120 | </td><td align="left"> | |
121 | ( | |
122 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">L</mml:mi> | |
123 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
124 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">L</mml:mi> | |
125 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
126 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">L</mml:mi> | |
127 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math> | |
128 | ) | |
129 | </td><td align="left"> | |
130 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
131 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math> | |
132 | </td></tr><tr><td align="left"> | |
133 | <code class="constant">GL_INTENSITY</code> | |
134 | </td><td align="left"> | |
135 | ( | |
136 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">I</mml:mi> | |
137 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
138 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">I</mml:mi> | |
139 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
140 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">I</mml:mi> | |
141 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math> | |
142 | ) | |
143 | </td><td align="left"> | |
144 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">I</mml:mi> | |
145 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math> | |
146 | </td></tr><tr><td align="left"> | |
147 | <code class="constant">GL_RGB</code> | |
148 | </td><td align="left"> | |
149 | ( | |
150 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">R</mml:mi> | |
151 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
152 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">G</mml:mi> | |
153 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
154 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">B</mml:mi> | |
155 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math> | |
156 | ) | |
157 | </td><td align="left"> | |
158 | 1 | |
159 | </td></tr><tr><td align="left"> | |
160 | <code class="constant">GL_RGBA</code> | |
161 | </td><td align="left"> | |
162 | ( | |
163 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">R</mml:mi> | |
164 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
165 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">G</mml:mi> | |
166 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math>, | |
167 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">B</mml:mi> | |
168 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math> | |
169 | ) | |
170 | </td><td align="left"> | |
171 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
172 | <mml:mi mathvariant="italic">t</mml:mi></mml:msub></mml:math> | |
173 | </td></tr></tbody></table></div><p> | |
174 | A texture function acts on the fragment to be textured using | |
175 | the texture image value that applies to the fragment | |
176 | (see <a class="citerefentry" href="glTexParameter.xml"><span class="citerefentry"><span class="refentrytitle">glTexParameter</span></span></a>) | |
177 | and produces an RGBA color for that fragment. | |
178 | The following table shows how the RGBA color is produced for each | |
179 | of the first five texture functions that can be chosen. | |
180 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">C</mml:mi></mml:math> | |
181 | is a triple of color values (RGB) and | |
182 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">A</mml:mi></mml:math> | |
183 | is the associated alpha value. | |
184 | RGBA values extracted from a texture image are in the range [0,1]. | |
185 | The subscript | |
186 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">p</mml:mi></mml:math> | |
187 | refers to the color computed from the previous texture stage (or the incoming fragment if processing texture stage 0), | |
188 | the subscript | |
189 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">s</mml:mi></mml:math> | |
190 | to the texture source color, | |
191 | the subscript | |
192 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">c</mml:mi></mml:math> | |
193 | to the texture environment color, | |
194 | and the subscript | |
195 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">v</mml:mi></mml:math> | |
196 | indicates a value produced by the texture function. | |
197 | </p><p> | |
198 | </p><div class="informaltable"><table width="100%" border="1"><colgroup><col align="center" /><col align="center" /><col align="center" /><col align="left" /><col align="left" /><col align="left" /><col align="left" /></colgroup><thead><tr><th align="center"> | |
199 | Texture Base Internal Format | |
200 | </th><th align="center"> | |
201 | <code class="constant">Value</code> | |
202 | </th><th align="center"> | |
203 | <code class="constant">GL_REPLACE</code> Function | |
204 | </th><th align="center"> | |
205 | <code class="constant">GL_MODULATE</code> Function | |
206 | </th><th align="center"> | |
207 | <code class="constant">GL_DECAL</code> Function | |
208 | </th><th align="center"> | |
209 | <code class="constant">GL_BLEND</code> Function | |
210 | </th><th align="center"> | |
211 | <code class="constant">GL_ADD</code> Function | |
212 | </th></tr></thead><tbody><tr><td align="center"> | |
213 | <code class="constant">GL_ALPHA</code> | |
214 | </td><td align="center"> | |
215 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
216 | ||
217 | <mml:mrow> | |
218 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
219 | <mml:mi mathvariant="italic">v</mml:mi> | |
220 | </mml:msub> | |
221 | <mml:mo>=</mml:mo> | |
222 | </mml:mrow> | |
223 | </mml:math> | |
224 | </td><td align="center"> | |
225 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
226 | ||
227 | <mml:mrow> | |
228 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
229 | <mml:mi mathvariant="italic">p</mml:mi> | |
230 | </mml:msub> | |
231 | </mml:mrow> | |
232 | </mml:math> | |
233 | </td><td align="center"> | |
234 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
235 | ||
236 | <mml:mrow> | |
237 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
238 | <mml:mi mathvariant="italic">p</mml:mi> | |
239 | </mml:msub> | |
240 | </mml:mrow> | |
241 | </mml:math> | |
242 | </td><td align="center"> | |
243 | undefined | |
244 | </td><td align="center"> | |
245 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
246 | ||
247 | <mml:mrow> | |
248 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
249 | <mml:mi mathvariant="italic">p</mml:mi> | |
250 | </mml:msub> | |
251 | </mml:mrow> | |
252 | </mml:math> | |
253 | </td><td align="center"> | |
254 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
255 | ||
256 | <mml:mrow> | |
257 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
258 | <mml:mi mathvariant="italic">p</mml:mi> | |
259 | </mml:msub> | |
260 | </mml:mrow> | |
261 | </mml:math> | |
262 | </td></tr><tr><td align="center"> | |
263 | </td><td align="center"> | |
264 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
265 | ||
266 | <mml:mrow> | |
267 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
268 | <mml:mi mathvariant="italic">v</mml:mi> | |
269 | </mml:msub> | |
270 | <mml:mo>=</mml:mo> | |
271 | </mml:mrow> | |
272 | </mml:math> | |
273 | </td><td align="center"> | |
274 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
275 | ||
276 | <mml:mrow> | |
277 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
278 | <mml:mi mathvariant="italic">s</mml:mi> | |
279 | </mml:msub> | |
280 | </mml:mrow> | |
281 | </mml:math> | |
282 | </td><td align="center"> | |
283 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
284 | ||
285 | <mml:mrow> | |
286 | <mml:mrow> | |
287 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
288 | <mml:mi mathvariant="italic">p</mml:mi> | |
289 | </mml:msub> | |
290 | <mml:mo></mml:mo> | |
291 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
292 | <mml:mi mathvariant="italic">s</mml:mi> | |
293 | </mml:msub> | |
294 | </mml:mrow> | |
295 | </mml:mrow> | |
296 | </mml:math> | |
297 | </td><td align="center"> | |
298 | </td><td align="center"> | |
299 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
300 | ||
301 | <mml:mrow> | |
302 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
303 | <mml:mi mathvariant="italic">v</mml:mi> | |
304 | </mml:msub> | |
305 | <mml:mo>=</mml:mo> | |
306 | <mml:mrow> | |
307 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
308 | <mml:mi mathvariant="italic">p</mml:mi> | |
309 | </mml:msub> | |
310 | <mml:mo></mml:mo> | |
311 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
312 | <mml:mi mathvariant="italic">s</mml:mi> | |
313 | </mml:msub> | |
314 | </mml:mrow> | |
315 | </mml:mrow> | |
316 | </mml:math> | |
317 | </td><td align="center"> | |
318 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
319 | ||
320 | <mml:mrow> | |
321 | <mml:mrow> | |
322 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
323 | <mml:mi mathvariant="italic">p</mml:mi> | |
324 | </mml:msub> | |
325 | <mml:mo></mml:mo> | |
326 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
327 | <mml:mi mathvariant="italic">s</mml:mi> | |
328 | </mml:msub> | |
329 | </mml:mrow> | |
330 | </mml:mrow> | |
331 | </mml:math> | |
332 | </td></tr><tr><td align="center"> | |
333 | <code class="constant">GL_LUMINANCE</code> | |
334 | </td><td align="center"> | |
335 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
336 | ||
337 | <mml:mrow> | |
338 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
339 | <mml:mi mathvariant="italic">v</mml:mi> | |
340 | </mml:msub> | |
341 | <mml:mo>=</mml:mo> | |
342 | </mml:mrow> | |
343 | </mml:math> | |
344 | </td><td align="center"> | |
345 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
346 | ||
347 | <mml:mrow> | |
348 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
349 | <mml:mi mathvariant="italic">s</mml:mi> | |
350 | </mml:msub> | |
351 | </mml:mrow> | |
352 | </mml:math> | |
353 | </td><td align="center"> | |
354 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
355 | ||
356 | <mml:mrow> | |
357 | <mml:mrow> | |
358 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
359 | <mml:mi mathvariant="italic">p</mml:mi> | |
360 | </mml:msub> | |
361 | <mml:mo></mml:mo> | |
362 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
363 | <mml:mi mathvariant="italic">s</mml:mi> | |
364 | </mml:msub> | |
365 | </mml:mrow> | |
366 | </mml:mrow> | |
367 | </mml:math> | |
368 | </td><td align="center"> | |
369 | undefined | |
370 | </td><td align="center"> | |
371 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
372 | ||
373 | <mml:mrow> | |
374 | <mml:mrow> | |
375 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
376 | <mml:mi mathvariant="italic">p</mml:mi> | |
377 | </mml:msub> | |
378 | <mml:mo></mml:mo> | |
379 | <mml:mfenced open="(" close=")"> | |
380 | <mml:mrow> | |
381 | <mml:mn>1</mml:mn> | |
382 | <mml:mo>-</mml:mo> | |
383 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
384 | <mml:mi mathvariant="italic">s</mml:mi> | |
385 | </mml:msub> | |
386 | </mml:mrow> | |
387 | </mml:mfenced> | |
388 | <mml:mo>+</mml:mo> | |
389 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
390 | <mml:mi mathvariant="italic">c</mml:mi> | |
391 | </mml:msub> | |
392 | <mml:mo></mml:mo> | |
393 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
394 | <mml:mi mathvariant="italic">s</mml:mi> | |
395 | </mml:msub> | |
396 | </mml:mrow> | |
397 | </mml:mrow> | |
398 | </mml:math> | |
399 | </td><td align="center"> | |
400 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
401 | ||
402 | <mml:mrow> | |
403 | <mml:mrow> | |
404 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
405 | <mml:mi mathvariant="italic">p</mml:mi> | |
406 | </mml:msub> | |
407 | <mml:mo>+</mml:mo> | |
408 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
409 | <mml:mi mathvariant="italic">s</mml:mi> | |
410 | </mml:msub> | |
411 | </mml:mrow> | |
412 | </mml:mrow> | |
413 | </mml:math> | |
414 | </td></tr><tr><td align="center"> | |
415 | (or 1) | |
416 | </td><td align="center"> | |
417 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
418 | ||
419 | <mml:mrow> | |
420 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
421 | <mml:mi mathvariant="italic">v</mml:mi> | |
422 | </mml:msub> | |
423 | <mml:mo>=</mml:mo> | |
424 | </mml:mrow> | |
425 | </mml:math> | |
426 | </td><td align="center"> | |
427 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
428 | ||
429 | <mml:mrow> | |
430 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
431 | <mml:mi mathvariant="italic">p</mml:mi> | |
432 | </mml:msub> | |
433 | </mml:mrow> | |
434 | </mml:math> | |
435 | </td><td align="center"> | |
436 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
437 | ||
438 | <mml:mrow> | |
439 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
440 | <mml:mi mathvariant="italic">p</mml:mi> | |
441 | </mml:msub> | |
442 | </mml:mrow> | |
443 | </mml:math> | |
444 | </td><td align="center"> | |
445 | </td><td align="center"> | |
446 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
447 | ||
448 | <mml:mrow> | |
449 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
450 | <mml:mi mathvariant="italic">p</mml:mi> | |
451 | </mml:msub> | |
452 | </mml:mrow> | |
453 | </mml:math> | |
454 | </td><td align="center"> | |
455 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
456 | ||
457 | <mml:mrow> | |
458 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
459 | <mml:mi mathvariant="italic">p</mml:mi> | |
460 | </mml:msub> | |
461 | </mml:mrow> | |
462 | </mml:math> | |
463 | </td></tr><tr><td align="center"> | |
464 | <code class="constant">GL_LUMINANCE_ALPHA</code> | |
465 | </td><td align="center"> | |
466 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
467 | ||
468 | <mml:mrow> | |
469 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
470 | <mml:mi mathvariant="italic">v</mml:mi> | |
471 | </mml:msub> | |
472 | <mml:mo>=</mml:mo> | |
473 | </mml:mrow> | |
474 | </mml:math> | |
475 | </td><td align="center"> | |
476 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
477 | ||
478 | <mml:mrow> | |
479 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
480 | <mml:mi mathvariant="italic">s</mml:mi> | |
481 | </mml:msub> | |
482 | </mml:mrow> | |
483 | </mml:math> | |
484 | </td><td align="center"> | |
485 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
486 | ||
487 | <mml:mrow> | |
488 | <mml:mrow> | |
489 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
490 | <mml:mi mathvariant="italic">p</mml:mi> | |
491 | </mml:msub> | |
492 | <mml:mo></mml:mo> | |
493 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
494 | <mml:mi mathvariant="italic">s</mml:mi> | |
495 | </mml:msub> | |
496 | </mml:mrow> | |
497 | </mml:mrow> | |
498 | </mml:math> | |
499 | </td><td align="center"> | |
500 | undefined | |
501 | </td><td align="center"> | |
502 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
503 | ||
504 | <mml:mrow> | |
505 | <mml:mrow> | |
506 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
507 | <mml:mi mathvariant="italic">p</mml:mi> | |
508 | </mml:msub> | |
509 | <mml:mo></mml:mo> | |
510 | <mml:mfenced open="(" close=")"> | |
511 | <mml:mrow> | |
512 | <mml:mn>1</mml:mn> | |
513 | <mml:mo>-</mml:mo> | |
514 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
515 | <mml:mi mathvariant="italic">s</mml:mi> | |
516 | </mml:msub> | |
517 | </mml:mrow> | |
518 | </mml:mfenced> | |
519 | <mml:mo>+</mml:mo> | |
520 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
521 | <mml:mi mathvariant="italic">c</mml:mi> | |
522 | </mml:msub> | |
523 | <mml:mo></mml:mo> | |
524 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
525 | <mml:mi mathvariant="italic">s</mml:mi> | |
526 | </mml:msub> | |
527 | </mml:mrow> | |
528 | </mml:mrow> | |
529 | </mml:math> | |
530 | </td><td align="center"> | |
531 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
532 | ||
533 | <mml:mrow> | |
534 | <mml:mrow> | |
535 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
536 | <mml:mi mathvariant="italic">p</mml:mi> | |
537 | </mml:msub> | |
538 | <mml:mo>+</mml:mo> | |
539 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
540 | <mml:mi mathvariant="italic">s</mml:mi> | |
541 | </mml:msub> | |
542 | </mml:mrow> | |
543 | </mml:mrow> | |
544 | </mml:math> | |
545 | </td></tr><tr><td align="center"> | |
546 | (or 2) | |
547 | </td><td align="center"> | |
548 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
549 | ||
550 | <mml:mrow> | |
551 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
552 | <mml:mi mathvariant="italic">v</mml:mi> | |
553 | </mml:msub> | |
554 | <mml:mo>=</mml:mo> | |
555 | </mml:mrow> | |
556 | </mml:math> | |
557 | </td><td align="center"> | |
558 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
559 | ||
560 | <mml:mrow> | |
561 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
562 | <mml:mi mathvariant="italic">s</mml:mi> | |
563 | </mml:msub> | |
564 | </mml:mrow> | |
565 | </mml:math> | |
566 | </td><td align="center"> | |
567 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
568 | ||
569 | <mml:mrow> | |
570 | <mml:mrow> | |
571 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
572 | <mml:mi mathvariant="italic">p</mml:mi> | |
573 | </mml:msub> | |
574 | <mml:mo></mml:mo> | |
575 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
576 | <mml:mi mathvariant="italic">s</mml:mi> | |
577 | </mml:msub> | |
578 | </mml:mrow> | |
579 | </mml:mrow> | |
580 | </mml:math> | |
581 | </td><td align="center"> | |
582 | </td><td align="center"> | |
583 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
584 | ||
585 | <mml:mrow> | |
586 | <mml:mrow> | |
587 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
588 | <mml:mi mathvariant="italic">p</mml:mi> | |
589 | </mml:msub> | |
590 | <mml:mo></mml:mo> | |
591 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
592 | <mml:mi mathvariant="italic">s</mml:mi> | |
593 | </mml:msub> | |
594 | </mml:mrow> | |
595 | </mml:mrow> | |
596 | </mml:math> | |
597 | </td><td align="center"> | |
598 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
599 | ||
600 | <mml:mrow> | |
601 | <mml:mrow> | |
602 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
603 | <mml:mi mathvariant="italic">p</mml:mi> | |
604 | </mml:msub> | |
605 | <mml:mo></mml:mo> | |
606 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
607 | <mml:mi mathvariant="italic">s</mml:mi> | |
608 | </mml:msub> | |
609 | </mml:mrow> | |
610 | </mml:mrow> | |
611 | </mml:math> | |
612 | </td></tr><tr><td align="center"> | |
613 | <code class="constant">GL_INTENSITY</code> | |
614 | </td><td align="center"> | |
615 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
616 | ||
617 | <mml:mrow> | |
618 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
619 | <mml:mi mathvariant="italic">v</mml:mi> | |
620 | </mml:msub> | |
621 | <mml:mo>=</mml:mo> | |
622 | </mml:mrow> | |
623 | </mml:math> | |
624 | </td><td align="center"> | |
625 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
626 | ||
627 | <mml:mrow> | |
628 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
629 | <mml:mi mathvariant="italic">s</mml:mi> | |
630 | </mml:msub> | |
631 | </mml:mrow> | |
632 | </mml:math> | |
633 | </td><td align="center"> | |
634 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
635 | ||
636 | <mml:mrow> | |
637 | <mml:mrow> | |
638 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
639 | <mml:mi mathvariant="italic">p</mml:mi> | |
640 | </mml:msub> | |
641 | <mml:mo></mml:mo> | |
642 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
643 | <mml:mi mathvariant="italic">s</mml:mi> | |
644 | </mml:msub> | |
645 | </mml:mrow> | |
646 | </mml:mrow> | |
647 | </mml:math> | |
648 | </td><td align="center"> | |
649 | undefined | |
650 | </td><td align="center"> | |
651 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
652 | ||
653 | <mml:mrow> | |
654 | <mml:mrow> | |
655 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
656 | <mml:mi mathvariant="italic">p</mml:mi> | |
657 | </mml:msub> | |
658 | <mml:mo></mml:mo> | |
659 | <mml:mfenced open="(" close=")"> | |
660 | <mml:mrow> | |
661 | <mml:mn>1</mml:mn> | |
662 | <mml:mo>-</mml:mo> | |
663 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
664 | <mml:mi mathvariant="italic">s</mml:mi> | |
665 | </mml:msub> | |
666 | </mml:mrow> | |
667 | </mml:mfenced> | |
668 | <mml:mo>+</mml:mo> | |
669 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
670 | <mml:mi mathvariant="italic">c</mml:mi> | |
671 | </mml:msub> | |
672 | <mml:mo></mml:mo> | |
673 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
674 | <mml:mi mathvariant="italic">s</mml:mi> | |
675 | </mml:msub> | |
676 | </mml:mrow> | |
677 | </mml:mrow> | |
678 | </mml:math> | |
679 | </td><td align="center"> | |
680 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
681 | ||
682 | <mml:mrow> | |
683 | <mml:mrow> | |
684 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
685 | <mml:mi mathvariant="italic">p</mml:mi> | |
686 | </mml:msub> | |
687 | <mml:mo>+</mml:mo> | |
688 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
689 | <mml:mi mathvariant="italic">s</mml:mi> | |
690 | </mml:msub> | |
691 | </mml:mrow> | |
692 | </mml:mrow> | |
693 | </mml:math> | |
694 | </td></tr><tr><td align="center"> | |
695 | </td><td align="center"> | |
696 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
697 | ||
698 | <mml:mrow> | |
699 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
700 | <mml:mi mathvariant="italic">v</mml:mi> | |
701 | </mml:msub> | |
702 | <mml:mo>=</mml:mo> | |
703 | </mml:mrow> | |
704 | </mml:math> | |
705 | </td><td align="center"> | |
706 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
707 | ||
708 | <mml:mrow> | |
709 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
710 | <mml:mi mathvariant="italic">s</mml:mi> | |
711 | </mml:msub> | |
712 | </mml:mrow> | |
713 | </mml:math> | |
714 | </td><td align="center"> | |
715 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
716 | ||
717 | <mml:mrow> | |
718 | <mml:mrow> | |
719 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
720 | <mml:mi mathvariant="italic">p</mml:mi> | |
721 | </mml:msub> | |
722 | <mml:mo></mml:mo> | |
723 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
724 | <mml:mi mathvariant="italic">s</mml:mi> | |
725 | </mml:msub> | |
726 | </mml:mrow> | |
727 | </mml:mrow> | |
728 | </mml:math> | |
729 | </td><td align="center"> | |
730 | </td><td align="center"> | |
731 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
732 | ||
733 | <mml:mrow> | |
734 | <mml:mrow> | |
735 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
736 | <mml:mi mathvariant="italic">p</mml:mi> | |
737 | </mml:msub> | |
738 | <mml:mo></mml:mo> | |
739 | <mml:mfenced open="(" close=")"> | |
740 | <mml:mrow> | |
741 | <mml:mn>1</mml:mn> | |
742 | <mml:mo>-</mml:mo> | |
743 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
744 | <mml:mi mathvariant="italic">s</mml:mi> | |
745 | </mml:msub> | |
746 | </mml:mrow> | |
747 | </mml:mfenced> | |
748 | <mml:mo>+</mml:mo> | |
749 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
750 | <mml:mi mathvariant="italic">c</mml:mi> | |
751 | </mml:msub> | |
752 | <mml:mo></mml:mo> | |
753 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
754 | <mml:mi mathvariant="italic">s</mml:mi> | |
755 | </mml:msub> | |
756 | </mml:mrow> | |
757 | </mml:mrow> | |
758 | </mml:math> | |
759 | </td><td align="center"> | |
760 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
761 | ||
762 | <mml:mrow> | |
763 | <mml:mrow> | |
764 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
765 | <mml:mi mathvariant="italic">p</mml:mi> | |
766 | </mml:msub> | |
767 | <mml:mo>+</mml:mo> | |
768 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
769 | <mml:mi mathvariant="italic">s</mml:mi> | |
770 | </mml:msub> | |
771 | </mml:mrow> | |
772 | </mml:mrow> | |
773 | </mml:math> | |
774 | </td></tr><tr><td align="center"> | |
775 | <code class="constant">GL_RGB</code> | |
776 | </td><td align="center"> | |
777 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
778 | ||
779 | <mml:mrow> | |
780 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
781 | <mml:mi mathvariant="italic">v</mml:mi> | |
782 | </mml:msub> | |
783 | <mml:mo>=</mml:mo> | |
784 | </mml:mrow> | |
785 | </mml:math> | |
786 | </td><td align="center"> | |
787 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
788 | ||
789 | <mml:mrow> | |
790 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
791 | <mml:mi mathvariant="italic">s</mml:mi> | |
792 | </mml:msub> | |
793 | </mml:mrow> | |
794 | </mml:math> | |
795 | </td><td align="center"> | |
796 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
797 | ||
798 | <mml:mrow> | |
799 | <mml:mrow> | |
800 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
801 | <mml:mi mathvariant="italic">p</mml:mi> | |
802 | </mml:msub> | |
803 | <mml:mo></mml:mo> | |
804 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
805 | <mml:mi mathvariant="italic">s</mml:mi> | |
806 | </mml:msub> | |
807 | </mml:mrow> | |
808 | </mml:mrow> | |
809 | </mml:math> | |
810 | </td><td align="center"> | |
811 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
812 | ||
813 | <mml:mrow> | |
814 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
815 | <mml:mi mathvariant="italic">s</mml:mi> | |
816 | </mml:msub> | |
817 | </mml:mrow> | |
818 | </mml:math> | |
819 | </td><td align="center"> | |
820 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
821 | ||
822 | <mml:mrow> | |
823 | <mml:mrow> | |
824 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
825 | <mml:mi mathvariant="italic">p</mml:mi> | |
826 | </mml:msub> | |
827 | <mml:mo></mml:mo> | |
828 | <mml:mfenced open="(" close=")"> | |
829 | <mml:mrow> | |
830 | <mml:mn>1</mml:mn> | |
831 | <mml:mo>-</mml:mo> | |
832 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
833 | <mml:mi mathvariant="italic">s</mml:mi> | |
834 | </mml:msub> | |
835 | </mml:mrow> | |
836 | </mml:mfenced> | |
837 | <mml:mo>+</mml:mo> | |
838 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
839 | <mml:mi mathvariant="italic">c</mml:mi> | |
840 | </mml:msub> | |
841 | <mml:mo></mml:mo> | |
842 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
843 | <mml:mi mathvariant="italic">s</mml:mi> | |
844 | </mml:msub> | |
845 | </mml:mrow> | |
846 | </mml:mrow> | |
847 | </mml:math> | |
848 | </td><td align="center"> | |
849 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
850 | ||
851 | <mml:mrow> | |
852 | <mml:mrow> | |
853 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
854 | <mml:mi mathvariant="italic">p</mml:mi> | |
855 | </mml:msub> | |
856 | <mml:mo>+</mml:mo> | |
857 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
858 | <mml:mi mathvariant="italic">s</mml:mi> | |
859 | </mml:msub> | |
860 | </mml:mrow> | |
861 | </mml:mrow> | |
862 | </mml:math> | |
863 | </td></tr><tr><td align="center"> | |
864 | (or 3) | |
865 | </td><td align="center"> | |
866 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
867 | ||
868 | <mml:mrow> | |
869 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
870 | <mml:mi mathvariant="italic">v</mml:mi> | |
871 | </mml:msub> | |
872 | <mml:mo>=</mml:mo> | |
873 | </mml:mrow> | |
874 | </mml:math> | |
875 | </td><td align="center"> | |
876 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
877 | ||
878 | <mml:mrow> | |
879 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
880 | <mml:mi mathvariant="italic">p</mml:mi> | |
881 | </mml:msub> | |
882 | </mml:mrow> | |
883 | </mml:math> | |
884 | </td><td align="center"> | |
885 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
886 | ||
887 | <mml:mrow> | |
888 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
889 | <mml:mi mathvariant="italic">p</mml:mi> | |
890 | </mml:msub> | |
891 | </mml:mrow> | |
892 | </mml:math> | |
893 | </td><td align="center"> | |
894 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
895 | ||
896 | <mml:mrow> | |
897 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
898 | <mml:mi mathvariant="italic">p</mml:mi> | |
899 | </mml:msub> | |
900 | </mml:mrow> | |
901 | </mml:math> | |
902 | </td><td align="center"> | |
903 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
904 | ||
905 | <mml:mrow> | |
906 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
907 | <mml:mi mathvariant="italic">p</mml:mi> | |
908 | </mml:msub> | |
909 | </mml:mrow> | |
910 | </mml:math> | |
911 | </td><td align="center"> | |
912 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
913 | ||
914 | <mml:mrow> | |
915 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
916 | <mml:mi mathvariant="italic">p</mml:mi> | |
917 | </mml:msub> | |
918 | </mml:mrow> | |
919 | </mml:math> | |
920 | </td></tr><tr><td align="center"> | |
921 | <code class="constant">GL_RGBA</code> | |
922 | </td><td align="center"> | |
923 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
924 | ||
925 | <mml:mrow> | |
926 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
927 | <mml:mi mathvariant="italic">v</mml:mi> | |
928 | </mml:msub> | |
929 | <mml:mo>=</mml:mo> | |
930 | </mml:mrow> | |
931 | </mml:math> | |
932 | </td><td align="center"> | |
933 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
934 | ||
935 | <mml:mrow> | |
936 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
937 | <mml:mi mathvariant="italic">s</mml:mi> | |
938 | </mml:msub> | |
939 | </mml:mrow> | |
940 | </mml:math> | |
941 | </td><td align="center"> | |
942 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
943 | ||
944 | <mml:mrow> | |
945 | <mml:mrow> | |
946 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
947 | <mml:mi mathvariant="italic">p</mml:mi> | |
948 | </mml:msub> | |
949 | <mml:mo></mml:mo> | |
950 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
951 | <mml:mi mathvariant="italic">s</mml:mi> | |
952 | </mml:msub> | |
953 | </mml:mrow> | |
954 | </mml:mrow> | |
955 | </mml:math> | |
956 | </td><td align="center"> | |
957 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
958 | ||
959 | <mml:mrow> | |
960 | <mml:mrow> | |
961 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
962 | <mml:mi mathvariant="italic">p</mml:mi> | |
963 | </mml:msub> | |
964 | <mml:mo></mml:mo> | |
965 | <mml:mfenced open="(" close=")"> | |
966 | <mml:mrow> | |
967 | <mml:mn>1</mml:mn> | |
968 | <mml:mo>-</mml:mo> | |
969 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
970 | <mml:mi mathvariant="italic">s</mml:mi> | |
971 | </mml:msub> | |
972 | </mml:mrow> | |
973 | </mml:mfenced> | |
974 | <mml:mo>+</mml:mo> | |
975 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
976 | <mml:mi mathvariant="italic">s</mml:mi> | |
977 | </mml:msub> | |
978 | <mml:mo></mml:mo> | |
979 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
980 | <mml:mi mathvariant="italic">s</mml:mi> | |
981 | </mml:msub> | |
982 | </mml:mrow> | |
983 | </mml:mrow> | |
984 | </mml:math> | |
985 | </td><td align="center"> | |
986 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
987 | ||
988 | <mml:mrow> | |
989 | <mml:mrow> | |
990 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
991 | <mml:mi mathvariant="italic">p</mml:mi> | |
992 | </mml:msub> | |
993 | <mml:mo></mml:mo> | |
994 | <mml:mfenced open="(" close=")"> | |
995 | <mml:mrow> | |
996 | <mml:mn>1</mml:mn> | |
997 | <mml:mo>-</mml:mo> | |
998 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
999 | <mml:mi mathvariant="italic">s</mml:mi> | |
1000 | </mml:msub> | |
1001 | </mml:mrow> | |
1002 | </mml:mfenced> | |
1003 | <mml:mo>+</mml:mo> | |
1004 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1005 | <mml:mi mathvariant="italic">c</mml:mi> | |
1006 | </mml:msub> | |
1007 | <mml:mo></mml:mo> | |
1008 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1009 | <mml:mi mathvariant="italic">s</mml:mi> | |
1010 | </mml:msub> | |
1011 | </mml:mrow> | |
1012 | </mml:mrow> | |
1013 | </mml:math> | |
1014 | </td><td align="center"> | |
1015 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1016 | ||
1017 | <mml:mrow> | |
1018 | <mml:mrow> | |
1019 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1020 | <mml:mi mathvariant="italic">p</mml:mi> | |
1021 | </mml:msub> | |
1022 | <mml:mo>+</mml:mo> | |
1023 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1024 | <mml:mi mathvariant="italic">s</mml:mi> | |
1025 | </mml:msub> | |
1026 | </mml:mrow> | |
1027 | </mml:mrow> | |
1028 | </mml:math> | |
1029 | </td></tr><tr><td align="center"> | |
1030 | (or 4) | |
1031 | </td><td align="center"> | |
1032 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1033 | ||
1034 | <mml:mrow> | |
1035 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1036 | <mml:mi mathvariant="italic">v</mml:mi> | |
1037 | </mml:msub> | |
1038 | <mml:mo>=</mml:mo> | |
1039 | </mml:mrow> | |
1040 | </mml:math> | |
1041 | </td><td align="center"> | |
1042 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1043 | ||
1044 | <mml:mrow> | |
1045 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1046 | <mml:mi mathvariant="italic">s</mml:mi> | |
1047 | </mml:msub> | |
1048 | </mml:mrow> | |
1049 | </mml:math> | |
1050 | </td><td align="center"> | |
1051 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1052 | ||
1053 | <mml:mrow> | |
1054 | <mml:mrow> | |
1055 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1056 | <mml:mi mathvariant="italic">p</mml:mi> | |
1057 | </mml:msub> | |
1058 | <mml:mo></mml:mo> | |
1059 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1060 | <mml:mi mathvariant="italic">s</mml:mi> | |
1061 | </mml:msub> | |
1062 | </mml:mrow> | |
1063 | </mml:mrow> | |
1064 | </mml:math> | |
1065 | </td><td align="center"> | |
1066 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1067 | ||
1068 | <mml:mrow> | |
1069 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1070 | <mml:mi mathvariant="italic">p</mml:mi> | |
1071 | </mml:msub> | |
1072 | </mml:mrow> | |
1073 | </mml:math> | |
1074 | </td><td align="center"> | |
1075 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1076 | ||
1077 | <mml:mrow> | |
1078 | <mml:mrow> | |
1079 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1080 | <mml:mi mathvariant="italic">p</mml:mi> | |
1081 | </mml:msub> | |
1082 | <mml:mo></mml:mo> | |
1083 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1084 | <mml:mi mathvariant="italic">s</mml:mi> | |
1085 | </mml:msub> | |
1086 | </mml:mrow> | |
1087 | </mml:mrow> | |
1088 | </mml:math> | |
1089 | </td><td align="center"> | |
1090 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1091 | ||
1092 | <mml:mrow> | |
1093 | <mml:mrow> | |
1094 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1095 | <mml:mi mathvariant="italic">p</mml:mi> | |
1096 | </mml:msub> | |
1097 | <mml:mo></mml:mo> | |
1098 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1099 | <mml:mi mathvariant="italic">s</mml:mi> | |
1100 | </mml:msub> | |
1101 | </mml:mrow> | |
1102 | </mml:mrow> | |
1103 | </mml:math> | |
1104 | </td></tr></tbody></table></div><p> | |
1105 | If <em class="parameter"><code>pname</code></em> is <code class="constant">GL_TEXTURE_ENV_MODE</code>, and <em class="parameter"><code>params</code></em> is <code class="constant">GL_COMBINE</code>, the | |
1106 | form of the texture function depends on the values of <code class="constant">GL_COMBINE_RGB</code> | |
1107 | and <code class="constant">GL_COMBINE_ALPHA</code>. | |
1108 | </p><p> | |
1109 | The following describes how the texture sources, as specified by | |
1110 | <code class="constant">GL_SRC0_RGB</code>, <code class="constant">GL_SRC1_RGB</code>, <code class="constant">GL_SRC2_RGB</code>, | |
1111 | <code class="constant">GL_SRC0_ALPHA</code>, <code class="constant">GL_SRC1_ALPHA</code>, and <code class="constant">GL_SRC2_ALPHA</code>, | |
1112 | are combined to produce a final texture color. In the following tables, | |
1113 | <code class="constant">GL_SRC0_c</code> is represented by | |
1114 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">Arg0</mml:mi></mml:math>, | |
1115 | <code class="constant">GL_SRC1_c</code> is | |
1116 | represented by | |
1117 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">Arg1</mml:mi></mml:math>, | |
1118 | and <code class="constant">GL_SRC2_c</code> is represented by | |
1119 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">Arg2</mml:mi></mml:math>. | |
1120 | </p><p> | |
1121 | <code class="constant">GL_COMBINE_RGB</code> accepts any of <code class="constant">GL_REPLACE</code>, <code class="constant">GL_MODULATE</code>, | |
1122 | <code class="constant">GL_ADD</code>, <code class="constant">GL_ADD_SIGNED</code>, <code class="constant">GL_INTERPOLATE</code>, <code class="constant">GL_SUBTRACT</code>, | |
1123 | <code class="constant">GL_DOT3_RGB</code>, or <code class="constant">GL_DOT3_RGBA</code>. | |
1124 | </p><p> | |
1125 | </p><div class="informaltable"><table border="1"><colgroup><col align="left" /><col align="left" /></colgroup><thead><tr><th align="left"><span class="bold"><strong> | |
1126 | <code class="constant">GL_COMBINE_RGB</code> | |
1127 | </strong></span></th><th align="left"><span class="bold"><strong> | |
1128 | Texture Function | |
1129 | </strong></span></th></tr></thead><tbody><tr><td align="left"> | |
1130 | <code class="constant">GL_REPLACE</code> | |
1131 | </td><td align="left"> | |
1132 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">Arg0</mml:mi></mml:math> | |
1133 | </td></tr><tr><td align="left"> | |
1134 | <code class="constant">GL_MODULATE</code> | |
1135 | </td><td align="left"> | |
1136 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1137 | ||
1138 | <mml:mrow> | |
1139 | <mml:mi mathvariant="italic">Arg0</mml:mi> | |
1140 | <mml:mo>×</mml:mo> | |
1141 | <mml:mi mathvariant="italic">Arg1</mml:mi> | |
1142 | </mml:mrow> | |
1143 | </mml:math> | |
1144 | </td></tr><tr><td align="left"> | |
1145 | <code class="constant">GL_ADD</code> | |
1146 | </td><td align="left"> | |
1147 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1148 | ||
1149 | <mml:mrow> | |
1150 | <mml:mi mathvariant="italic">Arg0</mml:mi> | |
1151 | <mml:mo>+</mml:mo> | |
1152 | <mml:mi mathvariant="italic">Arg1</mml:mi> | |
1153 | </mml:mrow> | |
1154 | </mml:math> | |
1155 | </td></tr><tr><td align="left"> | |
1156 | <code class="constant">GL_ADD_SIGNED</code> | |
1157 | </td><td align="left"> | |
1158 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1159 | ||
1160 | <mml:mrow> | |
1161 | <mml:mi mathvariant="italic">Arg0</mml:mi> | |
1162 | <mml:mo>+</mml:mo> | |
1163 | <mml:mi mathvariant="italic">Arg1</mml:mi> | |
1164 | <mml:mo>-</mml:mo> | |
1165 | <mml:mn>0.5</mml:mn> | |
1166 | </mml:mrow> | |
1167 | </mml:math> | |
1168 | </td></tr><tr><td align="left"> | |
1169 | <code class="constant">GL_INTERPOLATE</code> | |
1170 | </td><td align="left"> | |
1171 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1172 | ||
1173 | <mml:mrow> | |
1174 | <mml:mrow> | |
1175 | <mml:mi mathvariant="italic">Arg0</mml:mi> | |
1176 | <mml:mo>×</mml:mo> | |
1177 | <mml:mi mathvariant="italic">Arg2</mml:mi> | |
1178 | </mml:mrow> | |
1179 | <mml:mo>+</mml:mo> | |
1180 | <mml:mrow> | |
1181 | <mml:mi mathvariant="italic">Arg1</mml:mi> | |
1182 | <mml:mo>×</mml:mo> | |
1183 | <mml:mfenced open="(" close=")"> | |
1184 | <mml:mrow> | |
1185 | <mml:mn>1</mml:mn> | |
1186 | <mml:mo>-</mml:mo> | |
1187 | <mml:mi mathvariant="italic">Arg2</mml:mi> | |
1188 | </mml:mrow> | |
1189 | </mml:mfenced> | |
1190 | </mml:mrow> | |
1191 | </mml:mrow> | |
1192 | </mml:math> | |
1193 | </td></tr><tr><td align="left"> | |
1194 | <code class="constant">GL_SUBTRACT</code> | |
1195 | </td><td align="left"> | |
1196 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1197 | ||
1198 | <mml:mrow> | |
1199 | <mml:mi mathvariant="italic">Arg0</mml:mi> | |
1200 | <mml:mo>-</mml:mo> | |
1201 | <mml:mi mathvariant="italic">Arg1</mml:mi> | |
1202 | </mml:mrow> | |
1203 | </mml:math> | |
1204 | </td></tr><tr><td align="left"> | |
1205 | <code class="constant">GL_DOT3_RGB</code> | |
1206 | or | |
1207 | <code class="constant">GL_DOT3_RGBA</code> | |
1208 | </td><td align="left"> | |
1209 | ||
1210 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1211 | <mml:mrow> | |
1212 | <mml:mn>4</mml:mn> | |
1213 | <mml:mo>×</mml:mo> | |
1214 | <mml:mfenced open="(" close=")"> | |
1215 | <mml:mrow> | |
1216 | <mml:mfenced open="(" close=")"> | |
1217 | <mml:mrow> | |
1218 | <mml:mfenced open="(" close=")"> | |
1219 | <mml:mrow> | |
1220 | <mml:mfenced open="" close=""> | |
1221 | <mml:msub><mml:mi mathvariant="italic">Arg0</mml:mi> | |
1222 | <mml:mi mathvariant="italic">r</mml:mi> | |
1223 | </mml:msub> | |
1224 | </mml:mfenced> | |
1225 | <mml:mo>-</mml:mo> | |
1226 | <mml:mn>0.5</mml:mn> | |
1227 | </mml:mrow> | |
1228 | </mml:mfenced> | |
1229 | <mml:mo>×</mml:mo> | |
1230 | <mml:mfenced open="(" close=")"> | |
1231 | <mml:mrow> | |
1232 | <mml:mfenced open="" close=""> | |
1233 | <mml:msub><mml:mi mathvariant="italic">Arg1</mml:mi> | |
1234 | <mml:mi mathvariant="italic">r</mml:mi> | |
1235 | </mml:msub> | |
1236 | </mml:mfenced> | |
1237 | <mml:mo>-</mml:mo> | |
1238 | <mml:mn>0.5</mml:mn> | |
1239 | </mml:mrow> | |
1240 | </mml:mfenced> | |
1241 | </mml:mrow> | |
1242 | </mml:mfenced> | |
1243 | <mml:mo>+</mml:mo> | |
1244 | <mml:mfenced open="(" close=")"> | |
1245 | <mml:mrow> | |
1246 | <mml:mfenced open="(" close=")"> | |
1247 | <mml:mrow> | |
1248 | <mml:mfenced open="" close=""> | |
1249 | <mml:msub><mml:mi mathvariant="italic">Arg0</mml:mi> | |
1250 | <mml:mi mathvariant="italic">g</mml:mi> | |
1251 | </mml:msub> | |
1252 | </mml:mfenced> | |
1253 | <mml:mo>-</mml:mo> | |
1254 | <mml:mn>0.5</mml:mn> | |
1255 | </mml:mrow> | |
1256 | </mml:mfenced> | |
1257 | <mml:mo>×</mml:mo> | |
1258 | <mml:mfenced open="(" close=")"> | |
1259 | <mml:mrow> | |
1260 | <mml:mfenced open="" close=""> | |
1261 | <mml:msub><mml:mi mathvariant="italic">Arg1</mml:mi> | |
1262 | <mml:mi mathvariant="italic">g</mml:mi> | |
1263 | </mml:msub> | |
1264 | </mml:mfenced> | |
1265 | <mml:mo>-</mml:mo> | |
1266 | <mml:mn>0.5</mml:mn> | |
1267 | </mml:mrow> | |
1268 | </mml:mfenced> | |
1269 | </mml:mrow> | |
1270 | </mml:mfenced> | |
1271 | <mml:mo>+</mml:mo> | |
1272 | <mml:mfenced open="(" close=")"> | |
1273 | <mml:mrow> | |
1274 | <mml:mfenced open="(" close=")"> | |
1275 | <mml:mrow> | |
1276 | <mml:mfenced open="" close=""> | |
1277 | <mml:msub><mml:mi mathvariant="italic">Arg0</mml:mi> | |
1278 | <mml:mi mathvariant="italic">b</mml:mi> | |
1279 | </mml:msub> | |
1280 | </mml:mfenced> | |
1281 | <mml:mo>-</mml:mo> | |
1282 | <mml:mn>0.5</mml:mn> | |
1283 | </mml:mrow> | |
1284 | </mml:mfenced> | |
1285 | <mml:mo>×</mml:mo> | |
1286 | <mml:mfenced open="(" close=")"> | |
1287 | <mml:mrow> | |
1288 | <mml:mfenced open="" close=""> | |
1289 | <mml:msub><mml:mi mathvariant="italic">Arg1</mml:mi> | |
1290 | <mml:mi mathvariant="italic">b</mml:mi> | |
1291 | </mml:msub> | |
1292 | </mml:mfenced> | |
1293 | <mml:mo>-</mml:mo> | |
1294 | <mml:mn>0.5</mml:mn> | |
1295 | </mml:mrow> | |
1296 | </mml:mfenced> | |
1297 | </mml:mrow> | |
1298 | </mml:mfenced> | |
1299 | </mml:mrow> | |
1300 | </mml:mfenced> | |
1301 | </mml:mrow> | |
1302 | </mml:math> | |
1303 | </td></tr></tbody></table></div><p> | |
1304 | The scalar results for <code class="constant">GL_DOT3_RGB</code> and <code class="constant">GL_DOT3_RGBA</code> are placed | |
1305 | into each of the 3 (RGB) or 4 (RGBA) components on output. | |
1306 | </p><p> | |
1307 | Likewise, <code class="constant">GL_COMBINE_ALPHA</code> accepts any of <code class="constant">GL_REPLACE</code>, | |
1308 | <code class="constant">GL_MODULATE</code>, <code class="constant">GL_ADD</code>, <code class="constant">GL_ADD_SIGNED</code>, <code class="constant">GL_INTERPOLATE</code>, or | |
1309 | <code class="constant">GL_SUBTRACT</code>. The following table describes how alpha values are | |
1310 | combined: | |
1311 | </p><p> | |
1312 | </p><div class="informaltable"><table border="1"><colgroup><col align="left" /><col align="left" /></colgroup><thead><tr><th align="left"><span class="bold"><strong> | |
1313 | <code class="constant">GL_COMBINE_ALPHA</code> | |
1314 | </strong></span></th><th align="left"><span class="bold"><strong> | |
1315 | Texture Function | |
1316 | </strong></span></th></tr></thead><tbody><tr><td align="left"> | |
1317 | <code class="constant">GL_REPLACE</code> | |
1318 | </td><td align="left"> | |
1319 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">Arg0</mml:mi></mml:math> | |
1320 | </td></tr><tr><td align="left"> | |
1321 | <code class="constant">GL_MODULATE</code> | |
1322 | </td><td align="left"> | |
1323 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1324 | ||
1325 | <mml:mrow> | |
1326 | <mml:mi mathvariant="italic">Arg0</mml:mi> | |
1327 | <mml:mo>×</mml:mo> | |
1328 | <mml:mi mathvariant="italic">Arg1</mml:mi> | |
1329 | </mml:mrow> | |
1330 | </mml:math> | |
1331 | </td></tr><tr><td align="left"> | |
1332 | <code class="constant">GL_ADD</code> | |
1333 | </td><td align="left"> | |
1334 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1335 | ||
1336 | <mml:mrow> | |
1337 | <mml:mi mathvariant="italic">Arg0</mml:mi> | |
1338 | <mml:mo>+</mml:mo> | |
1339 | <mml:mi mathvariant="italic">Arg1</mml:mi> | |
1340 | </mml:mrow> | |
1341 | </mml:math> | |
1342 | </td></tr><tr><td align="left"> | |
1343 | <code class="constant">GL_ADD_SIGNED</code> | |
1344 | </td><td align="left"> | |
1345 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1346 | ||
1347 | <mml:mrow> | |
1348 | <mml:mi mathvariant="italic">Arg0</mml:mi> | |
1349 | <mml:mo>+</mml:mo> | |
1350 | <mml:mi mathvariant="italic">Arg1</mml:mi> | |
1351 | <mml:mo>-</mml:mo> | |
1352 | <mml:mn>0.5</mml:mn> | |
1353 | </mml:mrow> | |
1354 | </mml:math> | |
1355 | </td></tr><tr><td align="left"> | |
1356 | <code class="constant">GL_INTERPOLATE</code> | |
1357 | </td><td align="left"> | |
1358 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1359 | ||
1360 | <mml:mrow> | |
1361 | <mml:mrow> | |
1362 | <mml:mi mathvariant="italic">Arg0</mml:mi> | |
1363 | <mml:mo>×</mml:mo> | |
1364 | <mml:mi mathvariant="italic">Arg2</mml:mi> | |
1365 | </mml:mrow> | |
1366 | <mml:mo>+</mml:mo> | |
1367 | <mml:mrow> | |
1368 | <mml:mi mathvariant="italic">Arg1</mml:mi> | |
1369 | <mml:mo>×</mml:mo> | |
1370 | <mml:mfenced open="(" close=")"> | |
1371 | <mml:mrow> | |
1372 | <mml:mn>1</mml:mn> | |
1373 | <mml:mo>-</mml:mo> | |
1374 | <mml:mi mathvariant="italic">Arg2</mml:mi> | |
1375 | </mml:mrow> | |
1376 | </mml:mfenced> | |
1377 | </mml:mrow> | |
1378 | </mml:mrow> | |
1379 | </mml:math> | |
1380 | </td></tr><tr><td align="left"> | |
1381 | <code class="constant">GL_SUBTRACT</code> | |
1382 | </td><td align="left"> | |
1383 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1384 | ||
1385 | <mml:mrow> | |
1386 | <mml:mi mathvariant="italic">Arg0</mml:mi> | |
1387 | <mml:mo>-</mml:mo> | |
1388 | <mml:mi mathvariant="italic">Arg1</mml:mi> | |
1389 | </mml:mrow> | |
1390 | </mml:math> | |
1391 | </td></tr></tbody></table></div><p> | |
1392 | In the following tables, the value | |
1393 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1394 | ||
1395 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1396 | <mml:mi mathvariant="italic">s</mml:mi> | |
1397 | </mml:msub> | |
1398 | </mml:math> | |
1399 | represents the color sampled | |
1400 | from the currently bound texture, | |
1401 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1402 | ||
1403 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1404 | <mml:mi mathvariant="italic">c</mml:mi> | |
1405 | </mml:msub> | |
1406 | </mml:math> | |
1407 | represents the constant | |
1408 | texture-environment color, | |
1409 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1410 | ||
1411 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1412 | <mml:mi mathvariant="italic">f</mml:mi> | |
1413 | </mml:msub> | |
1414 | </mml:math> | |
1415 | represents the primary color of the | |
1416 | incoming fragment, and | |
1417 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1418 | ||
1419 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1420 | <mml:mi mathvariant="italic">p</mml:mi> | |
1421 | </mml:msub> | |
1422 | </mml:math> | |
1423 | represents the color computed from the | |
1424 | previous texture stage or | |
1425 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1426 | ||
1427 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1428 | <mml:mi mathvariant="italic">f</mml:mi> | |
1429 | </mml:msub> | |
1430 | </mml:math> | |
1431 | if processing texture stage 0. Likewise, | |
1432 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1433 | ||
1434 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1435 | <mml:mi mathvariant="italic">s</mml:mi> | |
1436 | </mml:msub> | |
1437 | </mml:math>, | |
1438 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1439 | ||
1440 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1441 | <mml:mi mathvariant="italic">c</mml:mi> | |
1442 | </mml:msub> | |
1443 | </mml:math>, | |
1444 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1445 | ||
1446 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1447 | <mml:mi mathvariant="italic">f</mml:mi> | |
1448 | </mml:msub> | |
1449 | </mml:math>, | |
1450 | and | |
1451 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1452 | ||
1453 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1454 | <mml:mi mathvariant="italic">p</mml:mi> | |
1455 | </mml:msub> | |
1456 | </mml:math> | |
1457 | represent the respective | |
1458 | alpha values. | |
1459 | </p><p> | |
1460 | The following table describes the values assigned to | |
1461 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">Arg0</mml:mi></mml:math>, | |
1462 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">Arg1</mml:mi></mml:math>, | |
1463 | and | |
1464 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">Arg2</mml:mi></mml:math> | |
1465 | based upon the RGB sources and operands: | |
1466 | </p><p> | |
1467 | </p><div class="informaltable"><table border="1"><colgroup><col align="left" /><col align="left" /><col align="center" /></colgroup><thead><tr><th align="left"><span class="bold"><strong> | |
1468 | <code class="constant">GL_SRCn_RGB</code> | |
1469 | </strong></span></th><th align="left"><span class="bold"><strong> | |
1470 | <code class="constant">GL_OPERANDn_RGB</code> | |
1471 | </strong></span></th><th align="center"><span class="bold"><strong> | |
1472 | Argument Value | |
1473 | </strong></span></th></tr></thead><tbody><tr><td align="left"> | |
1474 | <code class="constant">GL_TEXTURE</code> | |
1475 | </td><td align="left"> | |
1476 | <code class="constant">GL_SRC_COLOR</code> | |
1477 | </td><td align="center"> | |
1478 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1479 | ||
1480 | <mml:mfenced open="" close=""> | |
1481 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1482 | <mml:mi mathvariant="italic">s</mml:mi> | |
1483 | </mml:msub> | |
1484 | </mml:mfenced> | |
1485 | </mml:math> | |
1486 | </td></tr><tr><td align="left"> | |
1487 | </td><td align="left"> | |
1488 | <code class="constant">GL_ONE_MINUS_SRC_COLOR</code> | |
1489 | </td><td align="center"> | |
1490 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1491 | ||
1492 | <mml:mrow> | |
1493 | <mml:mn>1</mml:mn> | |
1494 | <mml:mo>-</mml:mo> | |
1495 | <mml:mfenced open="" close=""> | |
1496 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1497 | <mml:mi mathvariant="italic">s</mml:mi> | |
1498 | </mml:msub> | |
1499 | </mml:mfenced> | |
1500 | </mml:mrow> | |
1501 | </mml:math> | |
1502 | </td></tr><tr><td align="left"> | |
1503 | </td><td align="left"> | |
1504 | <code class="constant">GL_SRC_ALPHA</code> | |
1505 | </td><td align="center"> | |
1506 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1507 | ||
1508 | <mml:mfenced open="" close=""> | |
1509 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1510 | <mml:mi mathvariant="italic">s</mml:mi> | |
1511 | </mml:msub> | |
1512 | </mml:mfenced> | |
1513 | </mml:math> | |
1514 | </td></tr><tr><td align="left"> | |
1515 | </td><td align="left"> | |
1516 | <code class="constant">GL_ONE_MINUS_SRC_ALPHA</code> | |
1517 | </td><td align="center"> | |
1518 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1519 | ||
1520 | <mml:mrow> | |
1521 | <mml:mn>1</mml:mn> | |
1522 | <mml:mo>-</mml:mo> | |
1523 | <mml:mfenced open="" close=""> | |
1524 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1525 | <mml:mi mathvariant="italic">s</mml:mi> | |
1526 | </mml:msub> | |
1527 | </mml:mfenced> | |
1528 | </mml:mrow> | |
1529 | </mml:math> | |
1530 | </td></tr><tr><td align="left"> | |
1531 | <code class="constant">GL_TEXTUREn</code> | |
1532 | </td><td align="left"> | |
1533 | <code class="constant">GL_SRC_COLOR</code> | |
1534 | </td><td align="center"> | |
1535 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1536 | ||
1537 | <mml:mfenced open="" close=""> | |
1538 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1539 | <mml:mi mathvariant="italic">s</mml:mi> | |
1540 | </mml:msub> | |
1541 | </mml:mfenced> | |
1542 | </mml:math> | |
1543 | </td></tr><tr><td align="left"> | |
1544 | </td><td align="left"> | |
1545 | <code class="constant">GL_ONE_MINUS_SRC_COLOR</code> | |
1546 | </td><td align="center"> | |
1547 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1548 | ||
1549 | <mml:mrow> | |
1550 | <mml:mn>1</mml:mn> | |
1551 | <mml:mo>-</mml:mo> | |
1552 | <mml:mfenced open="" close=""> | |
1553 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1554 | <mml:mi mathvariant="italic">s</mml:mi> | |
1555 | </mml:msub> | |
1556 | </mml:mfenced> | |
1557 | </mml:mrow> | |
1558 | </mml:math> | |
1559 | </td></tr><tr><td align="left"> | |
1560 | </td><td align="left"> | |
1561 | <code class="constant">GL_SRC_ALPHA</code> | |
1562 | </td><td align="center"> | |
1563 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1564 | ||
1565 | <mml:mfenced open="" close=""> | |
1566 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1567 | <mml:mi mathvariant="italic">s</mml:mi> | |
1568 | </mml:msub> | |
1569 | </mml:mfenced> | |
1570 | </mml:math> | |
1571 | </td></tr><tr><td align="left"> | |
1572 | </td><td align="left"> | |
1573 | <code class="constant">GL_ONE_MINUS_SRC_ALPHA</code> | |
1574 | </td><td align="center"> | |
1575 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1576 | ||
1577 | <mml:mrow> | |
1578 | <mml:mn>1</mml:mn> | |
1579 | <mml:mo>-</mml:mo> | |
1580 | <mml:mfenced open="" close=""> | |
1581 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1582 | <mml:mi mathvariant="italic">s</mml:mi> | |
1583 | </mml:msub> | |
1584 | </mml:mfenced> | |
1585 | </mml:mrow> | |
1586 | </mml:math> | |
1587 | </td></tr><tr><td align="left"> | |
1588 | <code class="constant">GL_CONSTANT</code> | |
1589 | </td><td align="left"> | |
1590 | <code class="constant">GL_SRC_COLOR</code> | |
1591 | </td><td align="center"> | |
1592 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1593 | ||
1594 | <mml:mfenced open="" close=""> | |
1595 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1596 | <mml:mi mathvariant="italic">c</mml:mi> | |
1597 | </mml:msub> | |
1598 | </mml:mfenced> | |
1599 | </mml:math> | |
1600 | </td></tr><tr><td align="left"> | |
1601 | </td><td align="left"> | |
1602 | <code class="constant">GL_ONE_MINUS_SRC_COLOR</code> | |
1603 | </td><td align="center"> | |
1604 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1605 | ||
1606 | <mml:mrow> | |
1607 | <mml:mn>1</mml:mn> | |
1608 | <mml:mo>-</mml:mo> | |
1609 | <mml:mfenced open="" close=""> | |
1610 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1611 | <mml:mi mathvariant="italic">c</mml:mi> | |
1612 | </mml:msub> | |
1613 | </mml:mfenced> | |
1614 | </mml:mrow> | |
1615 | </mml:math> | |
1616 | </td></tr><tr><td align="left"> | |
1617 | </td><td align="left"> | |
1618 | <code class="constant">GL_SRC_ALPHA</code> | |
1619 | </td><td align="center"> | |
1620 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1621 | ||
1622 | <mml:mfenced open="" close=""> | |
1623 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1624 | <mml:mi mathvariant="italic">c</mml:mi> | |
1625 | </mml:msub> | |
1626 | </mml:mfenced> | |
1627 | </mml:math> | |
1628 | </td></tr><tr><td align="left"> | |
1629 | </td><td align="left"> | |
1630 | <code class="constant">GL_ONE_MINUS_SRC_ALPHA</code> | |
1631 | </td><td align="center"> | |
1632 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1633 | ||
1634 | <mml:mrow> | |
1635 | <mml:mn>1</mml:mn> | |
1636 | <mml:mo>-</mml:mo> | |
1637 | <mml:mfenced open="" close=""> | |
1638 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1639 | <mml:mi mathvariant="italic">c</mml:mi> | |
1640 | </mml:msub> | |
1641 | </mml:mfenced> | |
1642 | </mml:mrow> | |
1643 | </mml:math> | |
1644 | </td></tr><tr><td align="left"> | |
1645 | <code class="constant">GL_PRIMARY_COLOR</code> | |
1646 | </td><td align="left"> | |
1647 | <code class="constant">GL_SRC_COLOR</code> | |
1648 | </td><td align="center"> | |
1649 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1650 | ||
1651 | <mml:mfenced open="" close=""> | |
1652 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1653 | <mml:mi mathvariant="italic">f</mml:mi> | |
1654 | </mml:msub> | |
1655 | </mml:mfenced> | |
1656 | </mml:math> | |
1657 | </td></tr><tr><td align="left"> | |
1658 | </td><td align="left"> | |
1659 | <code class="constant">GL_ONE_MINUS_SRC_COLOR</code> | |
1660 | </td><td align="center"> | |
1661 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1662 | ||
1663 | <mml:mrow> | |
1664 | <mml:mn>1</mml:mn> | |
1665 | <mml:mo>-</mml:mo> | |
1666 | <mml:mfenced open="" close=""> | |
1667 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1668 | <mml:mi mathvariant="italic">f</mml:mi> | |
1669 | </mml:msub> | |
1670 | </mml:mfenced> | |
1671 | </mml:mrow> | |
1672 | </mml:math> | |
1673 | </td></tr><tr><td align="left"> | |
1674 | </td><td align="left"> | |
1675 | <code class="constant">GL_SRC_ALPHA</code> | |
1676 | </td><td align="center"> | |
1677 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1678 | ||
1679 | <mml:mfenced open="" close=""> | |
1680 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1681 | <mml:mi mathvariant="italic">f</mml:mi> | |
1682 | </mml:msub> | |
1683 | </mml:mfenced> | |
1684 | </mml:math> | |
1685 | </td></tr><tr><td align="left"> | |
1686 | </td><td align="left"> | |
1687 | <code class="constant">GL_ONE_MINUS_SRC_ALPHA</code> | |
1688 | </td><td align="center"> | |
1689 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1690 | ||
1691 | <mml:mrow> | |
1692 | <mml:mn>1</mml:mn> | |
1693 | <mml:mo>-</mml:mo> | |
1694 | <mml:mfenced open="" close=""> | |
1695 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1696 | <mml:mi mathvariant="italic">f</mml:mi> | |
1697 | </mml:msub> | |
1698 | </mml:mfenced> | |
1699 | </mml:mrow> | |
1700 | </mml:math> | |
1701 | </td></tr><tr><td align="left"> | |
1702 | <code class="constant">GL_PREVIOUS</code> | |
1703 | </td><td align="left"> | |
1704 | <code class="constant">GL_SRC_COLOR</code> | |
1705 | </td><td align="center"> | |
1706 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1707 | ||
1708 | <mml:mfenced open="" close=""> | |
1709 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1710 | <mml:mi mathvariant="italic">p</mml:mi> | |
1711 | </mml:msub> | |
1712 | </mml:mfenced> | |
1713 | </mml:math> | |
1714 | </td></tr><tr><td align="left"> | |
1715 | </td><td align="left"> | |
1716 | <code class="constant">GL_ONE_MINUS_SRC_COLOR</code> | |
1717 | </td><td align="center"> | |
1718 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1719 | ||
1720 | <mml:mrow> | |
1721 | <mml:mn>1</mml:mn> | |
1722 | <mml:mo>-</mml:mo> | |
1723 | <mml:mfenced open="" close=""> | |
1724 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1725 | <mml:mi mathvariant="italic">p</mml:mi> | |
1726 | </mml:msub> | |
1727 | </mml:mfenced> | |
1728 | </mml:mrow> | |
1729 | </mml:math> | |
1730 | </td></tr><tr><td align="left"> | |
1731 | </td><td align="left"> | |
1732 | <code class="constant">GL_SRC_ALPHA</code> | |
1733 | </td><td align="center"> | |
1734 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1735 | ||
1736 | <mml:mfenced open="" close=""> | |
1737 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1738 | <mml:mi mathvariant="italic">p</mml:mi> | |
1739 | </mml:msub> | |
1740 | </mml:mfenced> | |
1741 | </mml:math> | |
1742 | </td></tr><tr><td align="left"> | |
1743 | </td><td align="left"> | |
1744 | <code class="constant">GL_ONE_MINUS_SRC_ALPHA</code> | |
1745 | </td><td align="center"> | |
1746 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1747 | ||
1748 | <mml:mrow> | |
1749 | <mml:mn>1</mml:mn> | |
1750 | <mml:mo>-</mml:mo> | |
1751 | <mml:mfenced open="" close=""> | |
1752 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1753 | <mml:mi mathvariant="italic">p</mml:mi> | |
1754 | </mml:msub> | |
1755 | </mml:mfenced> | |
1756 | </mml:mrow> | |
1757 | </mml:math> | |
1758 | </td></tr></tbody></table></div><p> | |
1759 | For <code class="constant">GL_TEXTUREn</code> sources, | |
1760 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1761 | ||
1762 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1763 | <mml:mi mathvariant="italic">s</mml:mi> | |
1764 | </mml:msub> | |
1765 | </mml:math> | |
1766 | and | |
1767 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1768 | ||
1769 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1770 | <mml:mi mathvariant="italic">s</mml:mi> | |
1771 | </mml:msub> | |
1772 | </mml:math> | |
1773 | represent the color | |
1774 | and alpha, respectively, produced from texture stage | |
1775 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">n</mml:mi></mml:math>. | |
1776 | </p><p> | |
1777 | The follow table describes the values assigned to | |
1778 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">Arg0</mml:mi></mml:math>, | |
1779 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">Arg1</mml:mi></mml:math>, | |
1780 | and | |
1781 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">Arg2</mml:mi></mml:math> | |
1782 | based upon the alpha sources and operands: | |
1783 | </p><p> | |
1784 | </p><div class="informaltable"><table border="1"><colgroup><col align="left" /><col align="left" /><col align="center" /></colgroup><thead><tr><th align="left"><span class="bold"><strong> | |
1785 | <code class="constant">GL_SRCn_ALPHA</code> | |
1786 | </strong></span></th><th align="left"><span class="bold"><strong> | |
1787 | <code class="constant">GL_OPERANDn_ALPHA</code> | |
1788 | </strong></span></th><th align="center"><span class="bold"><strong> | |
1789 | Argument Value | |
1790 | </strong></span></th></tr></thead><tbody><tr><td align="left"> | |
1791 | <code class="constant">GL_TEXTURE</code> | |
1792 | </td><td align="left"> | |
1793 | <code class="constant">GL_SRC_ALPHA</code> | |
1794 | </td><td align="center"> | |
1795 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1796 | ||
1797 | <mml:mfenced open="" close=""> | |
1798 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1799 | <mml:mi mathvariant="italic">s</mml:mi> | |
1800 | </mml:msub> | |
1801 | </mml:mfenced> | |
1802 | </mml:math> | |
1803 | </td></tr><tr><td align="left"> | |
1804 | </td><td align="left"> | |
1805 | <code class="constant">GL_ONE_MINUS_SRC_ALPHA</code> | |
1806 | </td><td align="center"> | |
1807 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1808 | ||
1809 | <mml:mrow> | |
1810 | <mml:mn>1</mml:mn> | |
1811 | <mml:mo>-</mml:mo> | |
1812 | <mml:mfenced open="" close=""> | |
1813 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1814 | <mml:mi mathvariant="italic">s</mml:mi> | |
1815 | </mml:msub> | |
1816 | </mml:mfenced> | |
1817 | </mml:mrow> | |
1818 | </mml:math> | |
1819 | </td></tr><tr><td align="left"> | |
1820 | <code class="constant">GL_TEXTUREn</code> | |
1821 | </td><td align="left"> | |
1822 | <code class="constant">GL_SRC_ALPHA</code> | |
1823 | </td><td align="center"> | |
1824 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1825 | ||
1826 | <mml:mfenced open="" close=""> | |
1827 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1828 | <mml:mi mathvariant="italic">s</mml:mi> | |
1829 | </mml:msub> | |
1830 | </mml:mfenced> | |
1831 | </mml:math> | |
1832 | </td></tr><tr><td align="left"> | |
1833 | </td><td align="left"> | |
1834 | <code class="constant">GL_ONE_MINUS_SRC_ALPHA</code> | |
1835 | </td><td align="center"> | |
1836 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1837 | ||
1838 | <mml:mrow> | |
1839 | <mml:mn>1</mml:mn> | |
1840 | <mml:mo>-</mml:mo> | |
1841 | <mml:mfenced open="" close=""> | |
1842 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1843 | <mml:mi mathvariant="italic">s</mml:mi> | |
1844 | </mml:msub> | |
1845 | </mml:mfenced> | |
1846 | </mml:mrow> | |
1847 | </mml:math> | |
1848 | </td></tr><tr><td align="left"> | |
1849 | <code class="constant">GL_CONSTANT</code> | |
1850 | </td><td align="left"> | |
1851 | <code class="constant">GL_SRC_ALPHA</code> | |
1852 | </td><td align="center"> | |
1853 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1854 | ||
1855 | <mml:mfenced open="" close=""> | |
1856 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1857 | <mml:mi mathvariant="italic">c</mml:mi> | |
1858 | </mml:msub> | |
1859 | </mml:mfenced> | |
1860 | </mml:math> | |
1861 | </td></tr><tr><td align="left"> | |
1862 | </td><td align="left"> | |
1863 | <code class="constant">GL_ONE_MINUS_SRC_ALPHA</code> | |
1864 | </td><td align="center"> | |
1865 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1866 | ||
1867 | <mml:mrow> | |
1868 | <mml:mn>1</mml:mn> | |
1869 | <mml:mo>-</mml:mo> | |
1870 | <mml:mfenced open="" close=""> | |
1871 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1872 | <mml:mi mathvariant="italic">c</mml:mi> | |
1873 | </mml:msub> | |
1874 | </mml:mfenced> | |
1875 | </mml:mrow> | |
1876 | </mml:math> | |
1877 | </td></tr><tr><td align="left"> | |
1878 | <code class="constant">GL_PRIMARY_COLOR</code> | |
1879 | </td><td align="left"> | |
1880 | <code class="constant">GL_SRC_ALPHA</code> | |
1881 | </td><td align="center"> | |
1882 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1883 | ||
1884 | <mml:mfenced open="" close=""> | |
1885 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1886 | <mml:mi mathvariant="italic">f</mml:mi> | |
1887 | </mml:msub> | |
1888 | </mml:mfenced> | |
1889 | </mml:math> | |
1890 | </td></tr><tr><td align="left"> | |
1891 | </td><td align="left"> | |
1892 | <code class="constant">GL_ONE_MINUS_SRC_ALPHA</code> | |
1893 | </td><td align="center"> | |
1894 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1895 | ||
1896 | <mml:mrow> | |
1897 | <mml:mn>1</mml:mn> | |
1898 | <mml:mo>-</mml:mo> | |
1899 | <mml:mfenced open="" close=""> | |
1900 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1901 | <mml:mi mathvariant="italic">f</mml:mi> | |
1902 | </mml:msub> | |
1903 | </mml:mfenced> | |
1904 | </mml:mrow> | |
1905 | </mml:math> | |
1906 | </td></tr><tr><td align="left"> | |
1907 | <code class="constant">GL_PREVIOUS</code> | |
1908 | </td><td align="left"> | |
1909 | <code class="constant">GL_SRC_ALPHA</code> | |
1910 | </td><td align="center"> | |
1911 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1912 | ||
1913 | <mml:mfenced open="" close=""> | |
1914 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1915 | <mml:mi mathvariant="italic">p</mml:mi> | |
1916 | </mml:msub> | |
1917 | </mml:mfenced> | |
1918 | </mml:math> | |
1919 | </td></tr><tr><td align="left"> | |
1920 | </td><td align="left"> | |
1921 | <code class="constant">GL_ONE_MINUS_SRC_ALPHA</code> | |
1922 | </td><td align="center"> | |
1923 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1924 | ||
1925 | <mml:mrow> | |
1926 | <mml:mn>1</mml:mn> | |
1927 | <mml:mo>-</mml:mo> | |
1928 | <mml:mfenced open="" close=""> | |
1929 | <mml:msub><mml:mi mathvariant="italic">A</mml:mi> | |
1930 | <mml:mi mathvariant="italic">p</mml:mi> | |
1931 | </mml:msub> | |
1932 | </mml:mfenced> | |
1933 | </mml:mrow> | |
1934 | </mml:math> | |
1935 | </td></tr></tbody></table></div><p> | |
1936 | The RGB and alpha results of the texture function are multipled by the | |
1937 | values of <code class="constant">GL_RGB_SCALE</code> and <code class="constant">GL_ALPHA_SCALE</code>, respectively, and | |
1938 | clamped to the range | |
1939 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1940 | ||
1941 | <mml:mfenced open="[" close="]"> | |
1942 | <mml:mn>0</mml:mn> | |
1943 | <mml:mn>1</mml:mn> | |
1944 | </mml:mfenced> | |
1945 | </mml:math>. | |
1946 | </p><p> | |
1947 | If <em class="parameter"><code>pname</code></em> is <code class="constant">GL_TEXTURE_ENV_COLOR</code>, | |
1948 | <em class="parameter"><code>params</code></em> is a pointer to an array that holds an RGBA color consisting of four | |
1949 | values. | |
1950 | Integer color components are interpreted linearly such that the most | |
1951 | positive integer maps to 1.0, | |
1952 | and the most negative integer maps to -1.0. | |
1953 | The values are clamped to the range [0,1] when they are specified. | |
1954 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
1955 | ||
1956 | <mml:msub><mml:mi mathvariant="italic">C</mml:mi> | |
1957 | <mml:mi mathvariant="italic">c</mml:mi> | |
1958 | </mml:msub> | |
1959 | </mml:math> | |
1960 | takes these four values. | |
1961 | </p><p> | |
1962 | If <em class="parameter"><code>pname</code></em> is <code class="constant">GL_TEXTURE_LOD_BIAS</code>, the value specified is added to the | |
1963 | texture level-of-detail parameter, that selects which mipmap, or mipmaps | |
1964 | depending upon the selected <code class="constant">GL_TEXTURE_MIN_FILTER</code>, will be sampled. | |
1965 | </p><p> | |
1966 | <code class="constant">GL_TEXTURE_ENV_MODE</code> defaults to <code class="constant">GL_MODULATE</code> and | |
1967 | <code class="constant">GL_TEXTURE_ENV_COLOR</code> defaults to (0, 0, 0, 0). | |
1968 | </p><p> | |
1969 | If <em class="parameter"><code>target</code></em> is <code class="constant">GL_POINT_SPRITE</code> and <em class="parameter"><code>pname</code></em> is <code class="constant">GL_COORD_REPLACE</code>, the boolean value specified | |
1970 | is used to either enable or disable point sprite texture coordinate replacement. The default value is <code class="constant">GL_FALSE</code>. | |
1971 | </p></div><div class="refsect1" title="Notes"><a id="notes"></a><h2>Notes</h2><p> | |
1972 | <code class="constant">GL_REPLACE</code> may only be used if the GL version is 1.1 or greater. | |
1973 | </p><p> | |
1974 | <code class="constant">GL_TEXTURE_FILTER_CONTROL</code> and <code class="constant">GL_TEXTURE_LOD_BIAS</code> may only be | |
1975 | used if the GL version is 1.4 or greater. | |
1976 | </p><p> | |
1977 | <code class="constant">GL_COMBINE</code> mode and its associated constants may only be used if the | |
1978 | GL version is 1.3 or greater. | |
1979 | </p><p> | |
1980 | <code class="constant">GL_TEXTUREn</code> may only be used if the GL version is 1.4 or greater. | |
1981 | </p><p> | |
1982 | Internal formats other than 1, 2, 3, or 4 may only be used if the GL | |
1983 | version is 1.1 or greater. | |
1984 | </p><p> | |
1985 | For OpenGL versions 1.3 and greater, or when the <code class="code">ARB_multitexture</code> extension is supported, <code class="function">glTexEnv</code> controls | |
1986 | the texture environment for the current active texture unit, selected by | |
1987 | <a class="citerefentry" href="glActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glActiveTexture</span></span></a>. | |
1988 | </p><p> | |
1989 | <code class="constant">GL_POINT_SPRITE</code> and <code class="constant">GL_COORD_REPLACE</code> are available | |
1990 | only if the GL version is 2.0 or greater. | |
1991 | </p></div><div class="refsect1" title="Errors"><a id="errors"></a><h2>Errors</h2><p> | |
1992 | <code class="constant">GL_INVALID_ENUM</code> is generated when <em class="parameter"><code>target</code></em> or <em class="parameter"><code>pname</code></em> is not | |
1993 | one of the accepted defined values, | |
1994 | or when <em class="parameter"><code>params</code></em> should have a defined constant value | |
1995 | (based on the value of <em class="parameter"><code>pname</code></em>) | |
1996 | and does not. | |
1997 | </p><p> | |
1998 | <code class="constant">GL_INVALID_VALUE</code> is generated if the <em class="parameter"><code>params</code></em> value for | |
1999 | <code class="constant">GL_RGB_SCALE</code> or <code class="constant">GL_ALPHA_SCALE</code> are not one of 1.0, 2.0, | |
2000 | or 4.0. | |
2001 | </p><p> | |
2002 | <code class="constant">GL_INVALID_OPERATION</code> is generated if <code class="function">glTexEnv</code> | |
2003 | is executed between the execution of <a class="citerefentry" href="glBegin.xml"><span class="citerefentry"><span class="refentrytitle">glBegin</span></span></a> | |
2004 | and the corresponding execution of <a class="citerefentry" href="glEnd.xml"><span class="citerefentry"><span class="refentrytitle">glEnd</span></span></a>. | |
2005 | </p></div><div class="refsect1" title="Associated Gets"><a id="associatedgets"></a><h2>Associated Gets</h2><p> | |
2006 | <a class="citerefentry" href="glGetTexEnv.xml"><span class="citerefentry"><span class="refentrytitle">glGetTexEnv</span></span></a> | |
2007 | </p></div><div class="refsect1" title="See Also"><a id="seealso"></a><h2>See Also</h2><p> | |
2008 | <a class="citerefentry" href="glActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glActiveTexture</span></span></a>, | |
2009 | <a class="citerefentry" href="glCopyPixels.xml"><span class="citerefentry"><span class="refentrytitle">glCopyPixels</span></span></a>, | |
2010 | <a class="citerefentry" href="glCopyTexImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glCopyTexImage1D</span></span></a>, | |
2011 | <a class="citerefentry" href="glCopyTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCopyTexImage2D</span></span></a>, | |
2012 | <a class="citerefentry" href="glCopyTexSubImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glCopyTexSubImage1D</span></span></a>, | |
2013 | <a class="citerefentry" href="glCopyTexSubImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCopyTexSubImage2D</span></span></a>, | |
2014 | <a class="citerefentry" href="glCopyTexSubImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glCopyTexSubImage3D</span></span></a>, | |
2015 | <a class="citerefentry" href="glTexImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage1D</span></span></a>, | |
2016 | <a class="citerefentry" href="glTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage2D</span></span></a>, | |
2017 | <a class="citerefentry" href="glTexImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage3D</span></span></a>, | |
2018 | <a class="citerefentry" href="glTexParameter.xml"><span class="citerefentry"><span class="refentrytitle">glTexParameter</span></span></a>, | |
2019 | <a class="citerefentry" href="glTexSubImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glTexSubImage1D</span></span></a>, | |
2020 | <a class="citerefentry" href="glTexSubImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glTexSubImage2D</span></span></a>, | |
2021 | <a class="citerefentry" href="glTexSubImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glTexSubImage3D</span></span></a> | |
2022 | </p></div><div class="refsect1" title="Copyright"><a id="Copyright"></a><h2>Copyright</h2><p> | |
2023 | Copyright <span class="trademark"></span>© 1991-2006 | |
2024 | Silicon Graphics, Inc. This document is licensed under the SGI | |
2025 | Free Software B License. For details, see | |
2026 | <a class="ulink" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>. | |
2027 | </p></div></div></body></html> |