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4 Reference Pages
</title><meta name=
"generator" content=
"DocBook XSL Stylesheets V1.69.1" /></head><body><div class=
"refentry" lang=
"en" xml:
lang=
"en"><a id=
"glCopyTexImage1D"></a><div class=
"titlepage"></div><div class=
"refnamediv"><h2>Name
</h2><p>glCopyTexImage1D — copy pixels into a
1D texture image
</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">glCopyTexImage1D
</b>(
</code></td><td>GLenum
</td><td><var class=
"pdparam">target
</var>,
</td></tr><tr><td> </td><td>GLint
</td><td><var class=
"pdparam">level
</var>,
</td></tr><tr><td> </td><td>GLenum
</td><td><var class=
"pdparam">internalformat
</var>,
</td></tr><tr><td> </td><td>GLint
</td><td><var class=
"pdparam">x
</var>,
</td></tr><tr><td> </td><td>GLint
</td><td><var class=
"pdparam">y
</var>,
</td></tr><tr><td> </td><td>GLsizei
</td><td><var class=
"pdparam">width
</var>,
</td></tr><tr><td> </td><td>GLint
</td><td><var class=
"pdparam">border
</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>target
</code></em></span></dt><dd><p>
5 Specifies the target texture.
6 Must be
<code class=
"constant">GL_TEXTURE_1D
</code>.
7 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>level
</code></em></span></dt><dd><p>
8 Specifies the level-of-detail number.
9 Level
0 is the base image level.
10 Level
<span class=
"emphasis"><em>n
</em></span> is the
<span class=
"emphasis"><em>n
</em></span>th mipmap reduction image.
11 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>internalformat
</code></em></span></dt><dd><p>
12 Specifies the internal format of the texture.
13 Must be one of the following symbolic constants:
14 <code class=
"constant">GL_COMPRESSED_RED
</code>,
15 <code class=
"constant">GL_COMPRESSED_RG
</code>,
16 <code class=
"constant">GL_COMPRESSED_RGB
</code>,
17 <code class=
"constant">GL_COMPRESSED_RGBA
</code>.
18 <code class=
"constant">GL_COMPRESSED_SRGB
</code>,
19 <code class=
"constant">GL_COMPRESSED_SRGB_ALPHA
</code>.
20 <code class=
"constant">GL_DEPTH_COMPONENT
</code>,
21 <code class=
"constant">GL_DEPTH_COMPONENT16
</code>,
22 <code class=
"constant">GL_DEPTH_COMPONENT24
</code>,
23 <code class=
"constant">GL_DEPTH_COMPONENT32
</code>,
24 <code class=
"constant">GL_RED
</code>,
25 <code class=
"constant">GL_RG
</code>,
26 <code class=
"constant">GL_RGB
</code>,
27 <code class=
"constant">GL_R3_G3_B2
</code>,
28 <code class=
"constant">GL_RGB4
</code>,
29 <code class=
"constant">GL_RGB5
</code>,
30 <code class=
"constant">GL_RGB8
</code>,
31 <code class=
"constant">GL_RGB10
</code>,
32 <code class=
"constant">GL_RGB12
</code>,
33 <code class=
"constant">GL_RGB16
</code>,
34 <code class=
"constant">GL_RGBA
</code>,
35 <code class=
"constant">GL_RGBA2
</code>,
36 <code class=
"constant">GL_RGBA4
</code>,
37 <code class=
"constant">GL_RGB5_A1
</code>,
38 <code class=
"constant">GL_RGBA8
</code>,
39 <code class=
"constant">GL_RGB10_A2
</code>,
40 <code class=
"constant">GL_RGBA12
</code>,
41 <code class=
"constant">GL_RGBA16
</code>,
42 <code class=
"constant">GL_SRGB
</code>,
43 <code class=
"constant">GL_SRGB8
</code>,
44 <code class=
"constant">GL_SRGB_ALPHA
</code>, or
45 <code class=
"constant">GL_SRGB8_ALPHA8
</code>.
46 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>x
</code></em>,
</span><span class=
"term"><em class=
"parameter"><code>y
</code></em></span></dt><dd><p>
47 Specify the window coordinates of the left corner
48 of the row of pixels to be copied.
49 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>width
</code></em></span></dt><dd><p>
50 Specifies the width of the texture image.
52 <mml:math xmlns:
mml=
"http://www.w3.org/1998/Math/MathML" overflow=
"scroll">
55 <mml:msup><mml:mn>2</mml:mn>
56 <mml:mi mathvariant=
"italic">n
</mml:mi>
62 <mml:mfenced open=
"(" close=
")">
63 <mml:mi mathvariant=
"italic">border
</mml:mi>
69 <mml:math xmlns:
mml=
"http://www.w3.org/1998/Math/MathML" overflow=
"scroll"><mml:mi mathvariant=
"italic">n
</mml:mi></mml:math>.
70 The height of the texture image is
1.
71 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>border
</code></em></span></dt><dd><p>
72 Specifies the width of the border.
73 Must be either
0 or
1.
74 </p></dd></dl></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"description"></a><h2>Description
</h2><p>
75 <code class=
"function">glCopyTexImage1D
</code> defines a one-dimensional texture image with pixels from the current
76 <code class=
"constant">GL_READ_BUFFER
</code>.
78 The screen-aligned pixel row with left corner at
79 <mml:math xmlns:
mml=
"http://www.w3.org/1998/Math/MathML" overflow=
"scroll">
81 <mml:mfenced open=
"(" close=
")">
82 <mml:mi mathvariant=
"italic">x
</mml:mi>
83 <mml:mi mathvariant=
"italic">y
</mml:mi>
87 <mml:math xmlns:
mml=
"http://www.w3.org/1998/Math/MathML" overflow=
"scroll">
90 <mml:mi mathvariant=
"italic">width
</mml:mi>
95 <mml:mfenced open=
"(" close=
")">
96 <mml:mi mathvariant=
"italic">border
</mml:mi>
101 defines the texture array
102 at the mipmap level specified by
<em class=
"parameter"><code>level
</code></em>.
103 <em class=
"parameter"><code>internalformat
</code></em> specifies the internal format of the texture array.
105 The pixels in the row are processed exactly as if
106 <a href=
"glReadPixels.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glReadPixels
</span></span></a> had been called, but the process stops just before
108 At this point all pixel component values are clamped to the range
109 <mml:math xmlns:
mml=
"http://www.w3.org/1998/Math/MathML" overflow=
"scroll">
111 <mml:mfenced open=
"[" close=
"]">
116 and then converted to the texture's internal format for storage in the texel
119 Pixel ordering is such that lower
120 <mml:math xmlns:
mml=
"http://www.w3.org/1998/Math/MathML" overflow=
"scroll"><mml:mi mathvariant=
"italic">x
</mml:mi></mml:math>
121 screen coordinates correspond to
122 lower texture coordinates.
124 If any of the pixels within the specified row of the current
125 <code class=
"constant">GL_READ_BUFFER
</code> are outside the window associated with the current
126 rendering context, then the values obtained for those pixels are undefined.
128 <code class=
"function">glCopyTexImage1D
</code> defines a one-dimensional texture image with pixels from the current
129 <code class=
"constant">GL_READ_BUFFER
</code>.
131 When
<em class=
"parameter"><code>internalformat
</code></em> is one of the sRGB types, the GL does not automatically convert the source pixels to the sRGB color space. In this case, the
<code class=
"function">glPixelMap
</code> function can be used to accomplish the conversion.
132 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"notes"></a><h2>Notes
</h2><p>
133 1,
2,
3, and
4 are not accepted values for
<em class=
"parameter"><code>internalformat
</code></em>.
135 An image with
0 width indicates a NULL texture.
136 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"errors"></a><h2>Errors
</h2><p>
137 <code class=
"constant">GL_INVALID_ENUM
</code> is generated if
<em class=
"parameter"><code>target
</code></em> is not one of the allowable values.
139 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if
<em class=
"parameter"><code>level
</code></em> is less than
0.
141 <code class=
"constant">GL_INVALID_VALUE
</code> may be generated if
<em class=
"parameter"><code>level
</code></em> is greater
143 <mml:math xmlns:
mml=
"http://www.w3.org/1998/Math/MathML" overflow=
"scroll">
146 <mml:msub><mml:mi mathvariant=
"italic">log
</mml:mi>
150 <mml:mi mathvariant=
"italic">max
</mml:mi>
154 <mml:math xmlns:
mml=
"http://www.w3.org/1998/Math/MathML" overflow=
"scroll"><mml:mi mathvariant=
"italic">max
</mml:mi></mml:math>
155 is the returned value of
<code class=
"constant">GL_MAX_TEXTURE_SIZE
</code>.
157 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if
<em class=
"parameter"><code>internalformat
</code></em> is not an allowable value.
159 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if
<em class=
"parameter"><code>width
</code></em> is less than
0 or greater than
160 <code class=
"constant">GL_MAX_TEXTURE_SIZE
</code>.
162 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if non-power-of-two textures are not supported and the
<em class=
"parameter"><code>width
</code></em> cannot be represented as
163 <mml:math xmlns:
mml=
"http://www.w3.org/1998/Math/MathML" overflow=
"scroll">
166 <mml:msup><mml:mn>2</mml:mn>
167 <mml:mi mathvariant=
"italic">n
</mml:mi>
173 <mml:mfenced open=
"(" close=
")">
174 <mml:mi mathvariant=
"italic">border
</mml:mi>
179 for some integer value of
<span class=
"emphasis"><em>n
</em></span>.
181 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if
<em class=
"parameter"><code>border
</code></em> is not
0 or
1.
183 <code class=
"constant">GL_INVALID_OPERATION
</code> is generated if
<em class=
"parameter"><code>internalformat
</code></em> is
184 <code class=
"constant">GL_DEPTH_COMPONENT
</code>,
<code class=
"constant">GL_DEPTH_COMPONENT16
</code>,
185 <code class=
"constant">GL_DEPTH_COMPONENT24
</code>, or
<code class=
"constant">GL_DEPTH_COMPONENT32
</code> and there is no depth
187 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"associatedgets"></a><h2>Associated Gets
</h2><p>
188 <a href=
"glGetTexImage.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetTexImage
</span></span></a>
189 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"seealso"></a><h2>See Also
</h2><p>
190 <a href=
"glCopyTexImage2D.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glCopyTexImage2D
</span></span></a>,
191 <a href=
"glCopyTexSubImage1D.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glCopyTexSubImage1D
</span></span></a>,
192 <a href=
"glCopyTexSubImage2D.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glCopyTexSubImage2D
</span></span></a>,
193 <a href=
"glPixelStore.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glPixelStore
</span></span></a>,
194 <a href=
"glTexImage1D.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glTexImage1D
</span></span></a>,
195 <a href=
"glTexImage2D.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glTexImage2D
</span></span></a>,
196 <a href=
"glTexSubImage1D.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glTexSubImage1D
</span></span></a>,
197 <a href=
"glTexSubImage2D.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glTexSubImage2D
</span></span></a>,
198 <a href=
"glTexParameter.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glTexParameter
</span></span></a>
199 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"Copyright"></a><h2>Copyright
</h2><p>
200 Copyright
<span class=
"trademark"></span>©
1991-
2006
201 Silicon Graphics, Inc. This document is licensed under the SGI
202 Free Software B License. For details, see
203 <a href=
"http://oss.sgi.com/projects/FreeB/" target=
"_top">http://oss.sgi.com/projects/FreeB/
</a>.
204 </p></div></div></body></html>