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><head><title>gluBuild3DMipmapLevels</title><link rel="stylesheet" href="style.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.59.1"/><link rel="home" href="index.xml" title="PyOpenGL 2.0.1.07 Man Pages"/><link rel="up" href="reference-GLU.xml" title="GLU"/><link rel="previous" href="gluBuild2DMipmaps.3G.xml" title="gluBuild2DMipmaps"/><link rel="next" href="gluBuild3DMipmaps.3G.xml" title="gluBuild3DMipmaps"/></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">gluBuild3DMipmapLevels</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="gluBuild2DMipmaps.3G.xml">Prev</a> </td><th width="60%" align="center">GLU</th><td width="20%" align="right"> <a accesskey="n" href="gluBuild3DMipmaps.3G.xml">Next</a></td></tr></table><hr/></div><div class="refentry" lang="en"><a name="gluBuild3DMipmapLevels.3G"/><div class="titlepage"/><div class="refnamediv"><a name="gluBuild3DMipmapLevels.3G-name"/><h2>Name</h2><p>gluBuild3DMipmapLevels, gluBuild3DMipmapLevelsb, gluBuild3DMipmapLevelsf, gluBuild3DMipmapLevelsi, gluBuild3DMipmapLevelss, gluBuild3DMipmapLevelsub, gluBuild3DMipmapLevelsui, gluBuild3DMipmapLevelsus &#8212; builds a subset of three-dimensional mipmap levels</p></div><div class="refsynopsisdiv"><a name="gluBuild3DMipmapLevels.3G-c_spec"/><h2>C Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code>GLint <tt>gluBuild3DMipmapLevels</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>GLenum <i><tt>target</tt></i>, GLint <i><tt>internalFormat</tt></i>, GLsizei <i><tt>width</tt></i>, GLsizei <i><tt>height</tt></i>, GLsizei <i><tt>depth</tt></i>, GLenum <i><tt>format</tt></i>, GLenum <i><tt>type</tt></i>, GLint <i><tt>level</tt></i>, GLint <i><tt>base</tt></i>, GLint <i><tt>max</tt></i>, const void *<i><tt>data</tt></i>);</code></td></tr></table></div><div class="refsynopsisdiv"><a name="gluBuild3DMipmapLevels.3G-python_spec"/><h2>Python Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code><tt>gluBuild3DMipmapLevels</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>target</tt></i>, <i><tt>internalFormat</tt></i>, <i><tt>width</tt></i>, <i><tt>height</tt></i>, <i><tt>depth</tt></i>, <i><tt>format</tt></i>, <i><tt>type</tt></i>, <i><tt>level</tt></i>, <i><tt>base</tt></i>, <i><tt>max</tt></i>, <i><tt>data</tt></i>) &#8594; <tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>gluBuild3DMipmapLevelsb</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>target</tt></i>, <i><tt>internalFormat</tt></i>, <i><tt>format</tt></i>, <i><tt>level</tt></i>, <i><tt>base</tt></i>, <i><tt>max</tt></i>, <i><tt>data</tt></i>) &#8594; <tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>gluBuild3DMipmapLevelsf</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>target</tt></i>, <i><tt>internalFormat</tt></i>, <i><tt>format</tt></i>, <i><tt>level</tt></i>, <i><tt>base</tt></i>, <i><tt>max</tt></i>, <i><tt>data</tt></i>) &#8594; <tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>gluBuild3DMipmapLevelsi</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>target</tt></i>, <i><tt>internalFormat</tt></i>, <i><tt>format</tt></i>, <i><tt>level</tt></i>, <i><tt>base</tt></i>, <i><tt>max</tt></i>, <i><tt>data</tt></i>) &#8594; <tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>gluBuild3DMipmapLevelss</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>target</tt></i>, <i><tt>internalFormat</tt></i>, <i><tt>format</tt></i>, <i><tt>level</tt></i>, <i><tt>base</tt></i>, <i><tt>max</tt></i>, <i><tt>data</tt></i>) &#8594; <tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>gluBuild3DMipmapLevelsub</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>target</tt></i>, <i><tt>internalFormat</tt></i>, <i><tt>format</tt></i>, <i><tt>level</tt></i>, <i><tt>base</tt></i>, <i><tt>max</tt></i>, <i><tt>data</tt></i>) &#8594; <tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>gluBuild3DMipmapLevelsui</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>target</tt></i>, <i><tt>internalFormat</tt></i>, <i><tt>format</tt></i>, <i><tt>level</tt></i>, <i><tt>base</tt></i>, <i><tt>max</tt></i>, <i><tt>data</tt></i>) &#8594; <tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>gluBuild3DMipmapLevelsus</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>target</tt></i>, <i><tt>internalFormat</tt></i>, <i><tt>format</tt></i>, <i><tt>level</tt></i>, <i><tt>base</tt></i>, <i><tt>max</tt></i>, <i><tt>data</tt></i>) &#8594; <tt>None</tt></code></td></tr></table></div><div class="refsect1" lang="en"><a name="gluBuild3DMipmapLevels.3G-parameters"/><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><i><tt>target</tt></i></span></dt><dd>
						Specifies the target texture. Must be <tt>GL_TEXTURE_3D</tt>.
					</dd><dt><span class="term"><i><tt>internalFormat</tt></i></span></dt><dd>
						Requests the internal storage format of the texture image. Must be 1, 2, 3, 4, or one of the following
						symbolic constants: <tt>GL_ALPHA</tt>, <tt>GL_ALPHA4</tt>,
						<tt>GL_ALPHA8</tt>, <tt>GL_ALPHA12</tt>, <tt>GL_ALPHA16</tt>,
						<tt>GL_LUMINANCE</tt>, <tt>GL_LUMINANCE4</tt>, <tt>GL_LUMINANCE8</tt>,
						<tt>GL_LUMINANCE12</tt>, <tt>GL_LUMINANCE16</tt>,
						<tt>GL_LUMINANCE_ALPHA</tt>, <tt>GL_LUMINANCE4_ALPHA4</tt>,
						<tt>GL_LUMINANCE6_ALPHA2</tt>, <tt>GL_LUMINANCE8_ALPHA8</tt>,
						<tt>GL_LUMINANCE12_ALPHA4</tt>, <tt>GL_LUMINANCE12_ALPHA12</tt>,
						<tt>GL_LUMINANCE16_ALPHA16</tt>, <tt>GL_INTENSITY</tt>,
						<tt>GL_INTENSITY4</tt>, <tt>GL_INTENSITY8</tt>,
						<tt>GL_INTENSITY12</tt>, <tt>GL_INTENSITY16</tt>, <tt>GL_RGB</tt>,
						<tt>GL_R3_G3_B2</tt>, <tt>GL_RGB4</tt>, <tt>GL_RGB5</tt>,
						<tt>GL_RGB8</tt>, <tt>GL_RGB10</tt>, <tt>GL_RGB12</tt>,
						<tt>GL_RGB16</tt>, <tt>GL_RGBA</tt>, <tt>GL_RGBA2</tt>,
						<tt>GL_RGBA4</tt>, <tt>GL_RGB5_A1</tt>, <tt>GL_RGBA8</tt>,
						<tt>GL_RGB10_A2</tt>, <tt>GL_RGBA12</tt>, or <tt>GL_RGBA16</tt>.
					</dd><dt><span class="term"><i><tt>width</tt></i>, <i><tt>height</tt></i>, <i><tt>depth</tt></i></span></dt><dd>
						Specifies in pixels the width, height and depth respectively, of the texture image. These should be a power
						of 2.
					</dd><dt><span class="term"><i><tt>format</tt></i></span></dt><dd>
						Specifies the format of the pixel data. Must be one of <tt>GL_COLOR_INDEX</tt>,
						<tt>GL_DEPTH_COMPONENT</tt>, <tt>GL_RED</tt>, <tt>GL_GREEN</tt>,
						<tt>GL_BLUE</tt>, <tt>GL_ALPHA</tt>, <tt>GL_RGB</tt>,
						<tt>GL_RGBA</tt>, <tt>GL_BGR</tt>, <tt>GL_BGRA</tt>,
						<tt>GL_LUMINANCE</tt>, or <tt>GL_LUMINANCE_ALPHA</tt>.
					</dd><dt><span class="term"><i><tt>type</tt></i></span></dt><dd>
						Specifies the data type for <i><tt>data</tt></i>. Must be one of
						<tt>GL_UNSIGNED_BYTE</tt>, <tt>GL_BYTE</tt>, <tt>GL_BITMAP</tt>,
						<tt>GL_UNSIGNED_SHORT</tt>, <tt>GL_SHORT</tt>,
						<tt>GL_UNSIGNED_INT</tt>, <tt>GL_INT</tt>, <tt>GL_FLOAT</tt>,
						<tt>GL_UNSIGNED_BYTE_3_3_2</tt>, <tt>GL_UNSIGNED_BYTE_2_3_3_REV</tt>,
						<tt>GL_UNSIGNED_SHORT_5_6_5</tt>, <tt>GL_UNSIGNED_SHORT_5_6_5_REV</tt>,
						<tt>GL_UNSIGNED_SHORT_4_4_4_4</tt>, <tt>GL_UNSIGNED_SHORT_4_4_4_4_REV</tt>,
						<tt>GL_UNSIGNED_SHORT_5_5_5_1</tt>, <tt>GL_UNSIGNED_SHORT_1_5_5_5_REV</tt>,
						<tt>GL_UNSIGNED_INT_8_8_8_8</tt>, <tt>GL_UNSIGNED_INT_8_8_8_8_REV</tt>,
						<tt>GL_UNSIGNED_INT_10_10_10_2</tt>, or <tt>GL_UNSIGNED_INT_2_10_10_10_REV</tt>.
					</dd><dt><span class="term"><i><tt>level</tt></i></span></dt><dd>
						Specifies the mipmap level of the image data.
					</dd><dt><span class="term"><i><tt>base</tt></i></span></dt><dd>
						Specifies the minimum mipmap level to pass to <a href="glTexImage3D.3G.xml"><tt>glTexImage3D</tt></a>.
					</dd><dt><span class="term"><i><tt>max</tt></i></span></dt><dd>
						Specifies the maximum mipmap level to pass to <a href="glTexImage3D.3G.xml"><tt>glTexImage3D</tt></a>.
					</dd><dt><span class="term"><i><tt>data</tt></i></span></dt><dd>
						Specifies a pointer to the image data in memory.
					</dd></dl></div></div><div class="refsect1" lang="en"><a name="gluBuild3DMipmapLevels.3G-description"/><h2>Description</h2><p>
			<tt>gluBuild3DMipmapLevels</tt> builds a subset of prefiltered three-dimensional texture maps of decreasing
			resolutions called a mipmap. This is used for the antialiasing of texture mapped primitives.
		</p><p>
			A return value of zero indicates success, otherwise a GLU error code is returned (see <a href="gluErrorString.3G.xml">gluErrorString</a>).
		</p><p>
			A series of mipmap levels from <i><tt>base</tt></i> to <i><tt>max</tt></i> is built by decimating
			<i><tt>data</tt></i> in half along both dimensions until size <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
					<mml:mrow>
						<mml:mn>1</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>1</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>1</mml:mn>
					</mml:mrow>
				</mml:math> is reached. At each level, each texel in the halved mipmap level is an average of the corresponding
			eight texels in the larger mipmap level. (If exactly one of the dimensions is 1, four texels are averaged. If exactly
			two of the dimensions are 1, two texels are averaged.) <a href="glTexImage3D.3G.xml"><tt>glTexImage3D</tt></a> is called
			to load these mipmap levels from <i><tt>base</tt></i> to <i><tt>max</tt></i>. If
			<i><tt>max</tt></i> is larger than the highest mipmap level for the texture of the specified size, then a GLU
			error code is returned (see <a href="gluErrorString.3G.xml"><tt>gluErrorString</tt></a>) and nothing is loaded.
		</p><p>
			For example, if <i><tt>level</tt></i> is 2 and <i><tt>width</tt></i> is 16, <i><tt>height</tt></i>
			is 8 and <i><tt>depth</tt></i> is 4, the following levels are possible: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
					<mml:mrow>
						<mml:mn>16</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>8</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>4</mml:mn>
					</mml:mrow>
				</mml:math>, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
					<mml:mrow>
						<mml:mn>8</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>4</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>2</mml:mn>
					</mml:mrow>
				</mml:math>, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
					<mml:mrow>
						<mml:mn>4</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>2</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>1</mml:mn>
					</mml:mrow>
				</mml:math>, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
					<mml:mrow>
						<mml:mn>2</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>1</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>1</mml:mn>
					</mml:mrow>
				</mml:math>, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
					<mml:mrow>
						<mml:mn>1</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>1</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>1</mml:mn>
					</mml:mrow>
				</mml:math>. These correspond to levels 2 through 6 respectively. If <i><tt>base</tt></i> is 3 and
			<i><tt>max</tt></i> is 5, then only mipmap levels <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
					<mml:mrow>
						<mml:mn>8</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>4</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>2</mml:mn>
					</mml:mrow>
				</mml:math>, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
					<mml:mrow>
						<mml:mn>4</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>2</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>1</mml:mn>
					</mml:mrow>
				</mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
					<mml:mrow>
						<mml:mn>2</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>1</mml:mn>
						<mml:mo>×</mml:mo>
						<mml:mn>1</mml:mn>
					</mml:mrow>
				</mml:math> are loaded. However, if <i><tt>max</tt></i> is 7 then an error is returned and nothing is
			loaded, since <i><tt>max</tt></i> is larger than the highest mipmap level which is, in this case, 6.
		</p><p>
			The highest mipmap level can be derived from the formula <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
					<mml:mrow>
						<mml:msub>
							<mml:mi>log</mml:mi>
							<mml:mn>2</mml:mn>
						</mml:msub>
						<mml:mo>(</mml:mo>
						<mml:mi>max</mml:mi>
						<mml:mo>(</mml:mo>
						<mml:mi>width</mml:mi>
						<mml:mi>height</mml:mi>
						<mml:mi>depth</mml:mi>
						<mml:mo>)</mml:mo>
						<mml:msup>
							<mml:mn>2</mml:mn>
							<mml:mi>level</mml:mi>
						</mml:msup>
						<mml:mo>)</mml:mo>
					</mml:mrow>
				</mml:math>.
		</p><p>
			See the <a href="glTexImage1D.3G.xml"><tt>glTexImage1D</tt></a> reference page for a description of the acceptable values
			for <i><tt>format</tt></i> parameter. See the <a href="glDrawPixels.3G.xml"><tt>glDrawPixels</tt></a> reference
			page for a description of the acceptable values for <i><tt>type</tt></i> parameter.
		</p></div><div class="refsect1" lang="en"><a name="gluBuild3DMipmapLevels.3G-notes"/><h2>Notes</h2><p>
			<tt>gluBuild3DMipmapLevels</tt> is only available if the GLU version is 1.3 or greater.
		</p><p>
			Formats <tt>GL_BGR</tt>, and <tt>GL_BGRA</tt>, and types
			<tt>GL_UNSIGNED_BYTE_3_3_2</tt>, <tt>GL_UNSIGNED_BYTE_2_3_3_REV</tt>,
			<tt>GL_UNSIGNED_SHORT_5_6_5</tt>, <tt>GL_UNSIGNED_SHORT_5_6_5_REV</tt>,
			<tt>GL_UNSIGNED_SHORT_4_4_4_4</tt>, <tt>GL_UNSIGNED_SHORT_4_4_4_4_REV</tt>,
			<tt>GL_UNSIGNED_SHORT_5_5_5_1</tt>, <tt>GL_UNSIGNED_SHORT_1_5_5_5_REV</tt>,
			<tt>GL_UNSIGNED_INT_8_8_8_8</tt>, <tt>GL_UNSIGNED_INT_8_8_8_8_REV</tt>,
			<tt>GL_UNSIGNED_INT_10_10_10_2</tt>, and <tt>GL_UNSIGNED_INT_2_10_10_10_REV</tt> are only
			available if the GL version is 1.2 or greater.
		</p></div><div class="refsect1" lang="en"><a name="gluBuild3DMipmapLevels.3G-errors"/><h2>Errors</h2><p>
			<tt>GLU_INVALID_VALUE</tt> is returned if <i><tt>level</tt></i> &gt; <i><tt>base</tt></i>,
			<i><tt>base</tt></i> &lt; 0, <i><tt>max</tt></i> &lt; <i><tt>base</tt></i> or
			<i><tt>max</tt></i> is &gt; the highest mipmap level for <i><tt>data</tt></i>.
		</p><p>
			<tt>GLU_INVALID_VALUE</tt> is returned if <i><tt>width</tt></i>, <i><tt>height</tt></i>, or
			<i><tt>depth</tt></i> is &lt; 1.
		</p><p>
			<tt>GLU_INVALID_ENUM</tt> is returned if <i><tt>internalFormat</tt></i>,
			<i><tt>format</tt></i>, or <i><tt>type</tt></i> is not legal.
		</p><p>
			<tt>GLU_INVALID_OPERATION</tt> is returned if <i><tt>type</tt></i> is
			<tt>GL_UNSIGNED_BYTE_3_3_2</tt> or <tt>GL_UNSIGNED_BYTE_2_3_3_REV</tt> and
			<i><tt>format</tt></i> is not <tt>GL_RGB</tt>.
		</p><p>
			<tt>GLU_INVALID_OPERATION</tt> is returned if <i><tt>type</tt></i> is
			<tt>GL_UNSIGNED_SHORT_5_6_5</tt> or <tt>GL_UNSIGNED_SHORT_5_6_5_REV</tt> and
			<i><tt>format</tt></i> is not <tt>GL_RGB</tt>.
		</p><p>
			<tt>GLU_INVALID_OPERATION</tt> is returned if <i><tt>type</tt></i> is
			<tt>GL_UNSIGNED_SHORT_4_4_4_4</tt> or <tt>GL_UNSIGNED_SHORT_4_4_4_4_REV</tt> and
			<i><tt>format</tt></i> is neither <tt>GL_RGBA</tt> nor <tt>GL_BGRA</tt>.
		</p><p>
			<tt>GLU_INVALID_OPERATION</tt> is returned if <i><tt>type</tt></i> is
			<tt>GL_UNSIGNED_SHORT_5_5_5_1</tt> or <tt>GL_UNSIGNED_SHORT_1_5_5_5_REV</tt> and
			<i><tt>format</tt></i> is neither <tt>GL_RGBA</tt> nor <tt>GL_BGRA</tt>.
		</p><p>
			<tt>GLU_INVALID_OPERATION</tt> is returned if <i><tt>type</tt></i> is
			<tt>GL_UNSIGNED_INT_8_8_8_8</tt> or <tt>GL_UNSIGNED_INT_8_8_8_8_REV</tt> and
			<i><tt>format</tt></i> is neither <tt>GL_RGBA</tt> nor <tt>GL_BGRA</tt>.
		</p><p>
			<tt>GLU_INVALID_OPERATION</tt> is returned if <i><tt>type</tt></i> is
			<tt>GL_UNSIGNED_INT_10_10_10_2</tt> or <tt>GL_UNSIGNED_INT_2_10_10_10_REV</tt> and
			<i><tt>format</tt></i> is neither <tt>GL_RGBA</tt> nor <tt>GL_BGRA</tt>.
		</p></div><div class="refsect1" lang="en"><a name="gluBuild3DMipmapLevels.3G-see_also"/><h2>See Also</h2><p>
			<span class="simplelist"><a href="glDrawPixels.3G.xml">glDrawPixels</a>, <a href="glTexImage1D.3G.xml">glTexImage1D</a>, <a href="glTexImage2D.3G.xml">glTexImage2D</a>, <a href="glTexImage3D.3G.xml">glTexImage3D</a>, <a href="gluBuild1DMipmaps.3G.xml">gluBuild1DMipmaps</a>, <a href="gluBuild2DMipmaps.3G.xml">gluBuild2DMipmaps</a>, <a href="gluBuild3DMipmaps.3G.xml">gluBuild3DMipmaps</a>, <a href="gluErrorString.3G.xml">gluErrorString</a>, <a href="glGetTexImage.3G.xml">glGetTexImage</a>, <a href="glGetTexLevelParameter.3G.xml">glGetTexLevelParameter</a>, <a href="gluBuild1DMipmapLevels.3G.xml">gluBuild1DMipmapLevels</a>, <a href="gluBuild2DMipmapLevels.3G.xml">gluBuild2DMipmapLevels</a></span>
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