/usr/share/doc/opengl-4-html-doc/glInvalidateTexSubImage.xml is in opengl-4-html-doc 1.0~svn22917-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd"><!-- saved from url=(0013)about:internet -->
<?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" /><link rel="stylesheet" type="text/css" href="opengl-man.css" /><title>glInvalidateTexSubImage - OpenGL 4 Reference Pages</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /></head><body><div class="refentry"><a id="glInvalidateTexSubImage"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glInvalidateTexSubImage — invalidate a region of a texture image</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <strong class="fsfunc">glInvalidateTexSubImage</strong>(</code></td><td>GLuint <var class="pdparam">texture</var>, </td></tr><tr><td> </td><td>GLint <var class="pdparam">level</var>, </td></tr><tr><td> </td><td>GLint <var class="pdparam">xoffset</var>, </td></tr><tr><td> </td><td>GLint <var class="pdparam">yoffset</var>, </td></tr><tr><td> </td><td>GLint <var class="pdparam">zoffset</var>, </td></tr><tr><td> </td><td>GLsizei <var class="pdparam">width</var>, </td></tr><tr><td> </td><td>GLsizei <var class="pdparam">height</var>, </td></tr><tr><td> </td><td>GLsizei <var class="pdparam">depth</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>texture</code></em></span></dt><dd><p>
The name of a texture object a subregion of which to invalidate.
</p></dd><dt><span class="term"><em class="parameter"><code>level</code></em></span></dt><dd><p>
The level of detail of the texture object within which the region resides.
</p></dd><dt><span class="term"><em class="parameter"><code>xoffset</code></em></span></dt><dd><p>
The X offset of the region to be invalidated.
</p></dd><dt><span class="term"><em class="parameter"><code>yoffset</code></em></span></dt><dd><p>
The Y offset of the region to be invalidated.
</p></dd><dt><span class="term"><em class="parameter"><code>zoffset</code></em></span></dt><dd><p>
The Z offset of the region to be invalidated.
</p></dd><dt><span class="term"><em class="parameter"><code>width</code></em></span></dt><dd><p>
The width of the region to be invalidated.
</p></dd><dt><span class="term"><em class="parameter"><code>height</code></em></span></dt><dd><p>
The height of the region to be invalidated.
</p></dd><dt><span class="term"><em class="parameter"><code>depth</code></em></span></dt><dd><p>
The depth of the region to be invalidated.
</p></dd></dl></div></div><div class="refsect1"><a id="description"></a><h2>Description</h2><p>
<code class="function">glInvalidateTexSubImage</code> invalidates all or part of
a texture image. <em class="parameter"><code>texture</code></em> and <em class="parameter"><code>level</code></em> indicated
which texture image is being invalidated. After this command, data in that subregion have undefined
values. <em class="parameter"><code>xoffset</code></em>, <em class="parameter"><code>yoffset</code></em>, <em class="parameter"><code>zoffset</code></em>, <em class="parameter"><code>width</code></em>, <em class="parameter"><code>height</code></em>, and <em class="parameter"><code>depth</code></em>
are interpreted as they are in <a class="citerefentry" href="glTexSubImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glTexSubImage3D</span></span></a>. For texture targets that
don't have certain dimensions, this command treats those dimensions as
having a size of 1. For example, to invalidate a portion of a two-
dimensional texture, the application would use <em class="parameter"><code>zoffset</code></em> equal to zero and
<em class="parameter"><code>depth</code></em> equal to one. Cube map textures are treated as an array of six
slices in the z-dimension, where a value of <em class="parameter"><code>zoffset</code></em> is interpreted as
specifying face <code class="constant">TEXTURE_CUBE_MAP_POSITIVE_X</code> + <em class="parameter"><code>zoffset</code></em>.
</p><p>
<em class="parameter"><code>level</code></em> must be greater than or equal to zero and be
less than the base 2 logarithm of the maximum texture width, height, or depth.
<em class="parameter"><code>xoffset</code></em>, <em class="parameter"><code>yoffset</code></em> and <em class="parameter"><code>zoffset</code></em>
must be greater than or equal to zero and be less than the width, height or depth
of the image, respectively. Furthermore, <em class="parameter"><code>xoffset</code></em> + <em class="parameter"><code>width</code></em>,
<em class="parameter"><code>yoffset</code></em> + <em class="parameter"><code>height</code></em>, and
<em class="parameter"><code>zoffset</code></em> + <em class="parameter"><code>depth</code></em> must be less
than or equal to the width, height or depth of the image, respectively.
</p><p>
For textures of targets <code class="constant">GL_TEXTURE_RECTANGLE</code>, <code class="constant">GL_TEXTURE_BUFFER</code>, <code class="constant">GL_TEXTURE_2D_MULTISAMPLE</code>, or
<code class="constant">GL_TEXTURE_2D_MULTISAMPLE_ARRAY</code>, level must be zero.
</p></div><div class="refsect1"><a id="errors"></a><h2>Errors</h2><p>
<code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>xoffset</code></em>,
<em class="parameter"><code>yoffset</code></em> or <em class="parameter"><code>zoffset</code></em> is less than zero,
or if any of them is greater than the size of the image in the corresponding dimension.
</p><p>
<code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>level</code></em> is
less than zero or if it is greater or equal to the base 2 logarithm of the maximum texture width, height, or depth.
</p><p>
<code class="constant">GL_INVALID_VALUE</code> is generated if the target of <em class="parameter"><code>texture</code></em>
is any of <code class="constant">GL_TEXTURE_RECTANGLE</code>, <code class="constant">GL_TEXTURE_BUFFER</code>, <code class="constant">GL_TEXTURE_2D_MULTISAMPLE</code>, or
<code class="constant">GL_TEXTURE_2D_MULTISAMPLE_ARRAY</code> and <em class="parameter"><code>level</code></em> is not zero.
</p><p>
<code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>texture</code></em> is not the
name of an existing texture object.
</p></div><div class="refsect1"><a id="associatedgets"></a><h2>Associated Gets</h2><p>
<a class="citerefentry" href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_MAX_TEXTURE_SIZE</code>
</p></div><div class="refsect1"><a id="seealso"></a><h2>See Also</h2><p>
<a class="citerefentry" href="glInvalidateTexImage.xml"><span class="citerefentry"><span class="refentrytitle">glInvalidateTexImage</span></span></a>,,
<a class="citerefentry" href="glInvalidateBufferSubData.xml"><span class="citerefentry"><span class="refentrytitle">glInvalidateBufferSubData</span></span></a>,
<a class="citerefentry" href="glInvalidateBufferData.xml"><span class="citerefentry"><span class="refentrytitle">glInvalidateBufferData</span></span></a>,
<a class="citerefentry" href="glInvalidateFramebuffer.xml"><span class="citerefentry"><span class="refentrytitle">glInvalidateFramebuffer</span></span></a>,
<a class="citerefentry" href="glInvalidateSubFramebuffer.xml"><span class="citerefentry"><span class="refentrytitle">glInvalidateSubFramebuffer</span></span></a>.
</p></div><div class="refsect1"><a id="Copyright"></a><h2>Copyright</h2><p>
Copyright <span class="trademark"></span>© 2012 Khronos Group.
This material may be distributed subject to the terms and conditions set forth in
the Open Publication License, v 1.0, 8 June 1999.
<a class="ulink" href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
</p></div></div></body></html>
|