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1 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd"> |
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3 | <?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>glCallLists</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /></head><body><div class="refentry" lang="en" xml:lang="en"><a id="glCallLists"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glCallLists — execute a list of display lists</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glCallLists</b>(</code></td><td>GLsizei </td><td><var class="pdparam">n</var>, </td></tr><tr><td> </td><td>GLenum </td><td><var class="pdparam">type</var>, </td></tr><tr><td> </td><td>const GLvoid * </td><td><var class="pdparam">lists</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>n</code></em></span></dt><dd><p> | |
4 | Specifies the number of display lists to be executed. | |
5 | </p></dd><dt><span class="term"><em class="parameter"><code>type</code></em></span></dt><dd><p> | |
6 | Specifies the type of values in <em class="parameter"><code>lists</code></em>. | |
7 | Symbolic constants | |
8 | <code class="constant">GL_BYTE</code>, | |
9 | <code class="constant">GL_UNSIGNED_BYTE</code>, | |
10 | <code class="constant">GL_SHORT</code>, | |
11 | <code class="constant">GL_UNSIGNED_SHORT</code>, | |
12 | <code class="constant">GL_INT</code>, | |
13 | <code class="constant">GL_UNSIGNED_INT</code>, | |
14 | <code class="constant">GL_FLOAT</code>, | |
15 | <code class="constant">GL_2_BYTES</code>, | |
16 | <code class="constant">GL_3_BYTES</code>, and | |
17 | <code class="constant">GL_4_BYTES</code> are accepted. | |
18 | </p></dd><dt><span class="term"><em class="parameter"><code>lists</code></em></span></dt><dd><p> | |
19 | Specifies the address of an array of name offsets in the display list. | |
20 | The pointer type is void because the offsets can be bytes, | |
21 | shorts, | |
22 | ints, | |
23 | or floats, | |
24 | depending on the value of <em class="parameter"><code>type</code></em>. | |
25 | </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p> | |
26 | <code class="function">glCallLists</code> causes each display list in the list of names passed as <em class="parameter"><code>lists</code></em> | |
27 | to be executed. | |
28 | As a result, | |
29 | the commands saved in each display list are executed in order, | |
30 | just as if they were called without using a display list. | |
31 | Names of display lists that have not been defined are ignored. | |
32 | </p><p> | |
33 | <code class="function">glCallLists</code> provides an efficient means for executing more than one display list. | |
34 | <em class="parameter"><code>type</code></em> allows lists with various name formats to be accepted. | |
35 | The formats are as | |
36 | follows: | |
37 | </p><div class="variablelist"><dl><dt><span class="term"><code class="constant">GL_BYTE</code></span></dt><dd><p> | |
38 | <em class="parameter"><code>lists</code></em> is treated as an array of signed bytes, | |
39 | each in the range | |
40 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
41 | ||
42 | <mml:mn>-128</mml:mn> | |
43 | </mml:math> | |
44 | through 127. | |
45 | </p></dd><dt><span class="term"><code class="constant">GL_UNSIGNED_BYTE</code></span></dt><dd><p> | |
46 | <em class="parameter"><code>lists</code></em> is treated as an array of unsigned bytes, | |
47 | each in the range 0 through 255. | |
48 | </p></dd><dt><span class="term"><code class="constant">GL_SHORT</code></span></dt><dd><p> | |
49 | <em class="parameter"><code>lists</code></em> is treated as an array of signed two-byte integers, | |
50 | each in the range | |
51 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> | |
52 | ||
53 | <mml:mn>-32768</mml:mn> | |
54 | </mml:math> | |
55 | through 32767. | |
56 | </p></dd><dt><span class="term"><code class="constant">GL_UNSIGNED_SHORT</code></span></dt><dd><p> | |
57 | <em class="parameter"><code>lists</code></em> is treated as an array of unsigned two-byte integers, | |
58 | each in the range 0 through 65535. | |
59 | </p></dd><dt><span class="term"><code class="constant">GL_INT</code></span></dt><dd><p> | |
60 | <em class="parameter"><code>lists</code></em> is treated as an array of signed four-byte integers. | |
61 | </p></dd><dt><span class="term"><code class="constant">GL_UNSIGNED_INT</code></span></dt><dd><p> | |
62 | <em class="parameter"><code>lists</code></em> is treated as an array of unsigned four-byte integers. | |
63 | </p></dd><dt><span class="term"><code class="constant">GL_FLOAT</code></span></dt><dd><p> | |
64 | <em class="parameter"><code>lists</code></em> is treated as an array of four-byte floating-point values. | |
65 | </p></dd><dt><span class="term"><code class="constant">GL_2_BYTES</code></span></dt><dd><p> | |
66 | <em class="parameter"><code>lists</code></em> is treated as an array of unsigned bytes. | |
67 | Each pair of bytes specifies a single display-list name. | |
68 | The value of the pair is computed as 256 times the unsigned value | |
69 | of the first byte plus the unsigned value of the second byte. | |
70 | </p></dd><dt><span class="term"><code class="constant">GL_3_BYTES</code></span></dt><dd><p> | |
71 | <em class="parameter"><code>lists</code></em> is treated as an array of unsigned bytes. | |
72 | Each triplet of bytes specifies a single display-list name. | |
73 | The value of the triplet is computed as 65536 times the unsigned value | |
74 | of the first byte, | |
75 | plus 256 times the unsigned value of the second byte, | |
76 | plus the unsigned value of the third byte. | |
77 | </p></dd><dt><span class="term"><code class="constant">GL_4_BYTES</code></span></dt><dd><p> | |
78 | <em class="parameter"><code>lists</code></em> is treated as an array of unsigned bytes. | |
79 | Each quadruplet of bytes specifies a single display-list name. | |
80 | The value of the quadruplet is computed as 16777216 times the unsigned value | |
81 | of the first byte, | |
82 | plus 65536 times the unsigned value of the second byte, | |
83 | plus 256 times the unsigned value of the third byte, | |
84 | plus the unsigned value of the fourth byte. | |
85 | </p></dd></dl></div><p> | |
86 | The list of display-list names is not null-terminated. | |
87 | Rather, | |
88 | <em class="parameter"><code>n</code></em> specifies how many names are to be taken from <em class="parameter"><code>lists</code></em>. | |
89 | </p><p> | |
90 | An additional level of indirection is made available with the | |
91 | <a class="citerefentry" href="glListBase.xml"><span class="citerefentry"><span class="refentrytitle">glListBase</span></span></a> command, | |
92 | which specifies an unsigned offset that is added to each display-list | |
93 | name specified in <em class="parameter"><code>lists</code></em> before that display list is executed. | |
94 | </p><p> | |
95 | <code class="function">glCallLists</code> can appear inside a display list. | |
96 | To avoid the possibility of infinite recursion resulting from display lists | |
97 | calling one another, | |
98 | a limit is placed on the nesting level of display | |
99 | lists during display-list execution. | |
100 | This limit must be at least 64, and it depends on the implementation. | |
101 | </p><p> | |
102 | GL state is not saved and restored across a call to <code class="function">glCallLists</code>. | |
103 | Thus, | |
104 | changes made to GL state during the execution of the display lists | |
105 | remain after execution is completed. | |
106 | Use <a class="citerefentry" href="glPushAttrib.xml"><span class="citerefentry"><span class="refentrytitle">glPushAttrib</span></span></a>, | |
107 | <a class="citerefentry" href="glPopAttrib.xml"><span class="citerefentry"><span class="refentrytitle">glPopAttrib</span></span></a>, | |
108 | <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>, | |
109 | and <a class="citerefentry" href="glPopMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPopMatrix</span></span></a> to preserve GL state across <code class="function">glCallLists</code> calls. | |
110 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="notes"></a><h2>Notes</h2><p> | |
111 | Display lists can be executed between a call to <a class="citerefentry" href="glBegin.xml"><span class="citerefentry"><span class="refentrytitle">glBegin</span></span></a> | |
112 | and the corresponding call to <a class="citerefentry" href="glEnd.xml"><span class="citerefentry"><span class="refentrytitle">glEnd</span></span></a>, | |
113 | as long as the display list includes only commands that are allowed | |
114 | in this interval. | |
115 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="errors"></a><h2>Errors</h2><p> | |
116 | <code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>n</code></em> is negative. | |
117 | </p><p> | |
118 | <code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>type</code></em> is not one of | |
119 | <code class="constant">GL_BYTE</code>, | |
120 | <code class="constant">GL_UNSIGNED_BYTE</code>, | |
121 | <code class="constant">GL_SHORT</code>, | |
122 | <code class="constant">GL_UNSIGNED_SHORT</code>, | |
123 | <code class="constant">GL_INT</code>, | |
124 | <code class="constant">GL_UNSIGNED_INT</code>, | |
125 | <code class="constant">GL_FLOAT</code>, | |
126 | <code class="constant">GL_2_BYTES</code>, | |
127 | <code class="constant">GL_3_BYTES</code>, | |
128 | <code class="constant">GL_4_BYTES</code>. | |
129 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="associatedgets"></a><h2>Associated Gets</h2><p> | |
130 | <a class="citerefentry" href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_LIST_BASE</code> | |
131 | </p><p> | |
132 | <a class="citerefentry" href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_MAX_LIST_NESTING</code> | |
133 | </p><p> | |
134 | <a class="citerefentry" href="glIsList.xml"><span class="citerefentry"><span class="refentrytitle">glIsList</span></span></a> | |
135 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p> | |
136 | <a class="citerefentry" href="glCallList.xml"><span class="citerefentry"><span class="refentrytitle">glCallList</span></span></a>, | |
137 | <a class="citerefentry" href="glDeleteLists.xml"><span class="citerefentry"><span class="refentrytitle">glDeleteLists</span></span></a>, | |
138 | <a class="citerefentry" href="glGenLists.xml"><span class="citerefentry"><span class="refentrytitle">glGenLists</span></span></a>, | |
139 | <a class="citerefentry" href="glListBase.xml"><span class="citerefentry"><span class="refentrytitle">glListBase</span></span></a>, | |
140 | <a class="citerefentry" href="glNewList.xml"><span class="citerefentry"><span class="refentrytitle">glNewList</span></span></a>, | |
141 | <a class="citerefentry" href="glPushAttrib.xml"><span class="citerefentry"><span class="refentrytitle">glPushAttrib</span></span></a>, | |
142 | <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a> | |
143 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p> | |
144 | Copyright <span class="trademark"></span>© 1991-2006 | |
145 | Silicon Graphics, Inc. This document is licensed under the SGI | |
146 | Free Software B License. For details, see | |
147 | <a class="ulink" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>. | |
148 | </p></div></div></body></html> |