Difference between revisions of "GLAPI/glTexSubImage1D"

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m (Renaming category: 'GL 4 API Texturing' to 'Core API Ref Texturing'.)
m (Bot: Adding better formatting.)
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{{infobox feature  
 
{{infobox feature  
| name = glTexSubImage1D  
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| name = glTexSubImage1D }}
| core = 1.0
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}}
+
  
 
'''glTexSubImage1D:''' specify a one-dimensional texture subimage
 
'''glTexSubImage1D:''' specify a one-dimensional texture subimage
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== Function Definition ==
 
== Function Definition ==
  
   void '''glTexSubImage1D'''(GLenum ''target'', GLint ''level'', GLint ''xoffset'', GLsizei ''width'', GLenum ''format'', GLenum ''type'', const GLvoid * ''data'');
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   void '''glTexSubImage1D'''(GLenum {{param|target}}, GLint {{param|level}}, GLint {{param|xoffset}}, GLsizei {{param|width}}, GLenum {{param|format}}, GLenum {{param|type}}, const GLvoid * {{param|data}});
  
 
; target
 
; target
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== Description ==
 
== Description ==
  
Texturing maps a portion of a specified texture image onto each graphical primitive for which texturing is enabled. To enable or disable one-dimensional texturing, call [[GLAPI/glEnable|glEnable]] and [[GLAPI/glDisable|glDisable]] with argument {{code|GL_TEXTURE_1D}}.
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Texturing maps a portion of a specified texture image onto each graphical primitive for which texturing is enabled. To enable or disable one-dimensional texturing, call {{apifunc|glEnable}} and {{apifunc|glDisable}} with argument {{code|GL_TEXTURE_1D}}.
  
'''glTexSubImage1D''' redefines a contiguous subregion of an existing one-dimensional texture image. The texels referenced by ''data'' replace the portion of the existing texture array with x indices ''xoffset'' and xoffset + width - 1, inclusive. This region may not include any texels outside the range of the texture array as it was originally specified. It is not an error to specify a subtexture with width of 0, but such a specification has no effect.
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'''glTexSubImage1D''' redefines a contiguous subregion of an existing one-dimensional texture image. The texels referenced by {{param|data}} replace the portion of the existing texture array with x indices {{param|xoffset}} and xoffset + width - 1, inclusive. This region may not include any texels outside the range of the texture array as it was originally specified. It is not an error to specify a subtexture with width of 0, but such a specification has no effect.
  
If a non-zero named buffer object is bound to the {{code|GL_PIXEL_UNPACK_BUFFER}} target (see [[GLAPI/glBindBuffer|glBindBuffer]]) while a texture image is specified, ''data'' is treated as a byte offset into the buffer object's data store.
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If a non-zero named buffer object is bound to the {{code|GL_PIXEL_UNPACK_BUFFER}} target (see {{apifunc|glBindBuffer}}) while a texture image is specified, {{param|data}} is treated as a byte offset into the buffer object's data store.
  
 
== Notes ==
 
== Notes ==
  
[[GLAPI/glPixelStore|glPixelStore]] modes affect texture images.
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{{apifunc|glPixelStore}} modes affect texture images.
  
'''glTexSubImage1D''' specifies a one-dimensional subtexture for the current texture unit, specified with [[GLAPI/glActiveTexture|glActiveTexture]].
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'''glTexSubImage1D''' specifies a one-dimensional subtexture for the current texture unit, specified with {{apifunc|glActiveTexture}}.
  
 
== Errors ==
 
== Errors ==
  
{{code|GL_INVALID_ENUM}} is generated if ''target'' is not one of the allowable values.
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{{code|GL_INVALID_ENUM}} is generated if {{param|target}} is not one of the allowable values.
  
{{code|GL_INVALID_ENUM}} is generated if ''format'' is not an accepted format constant.
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{{code|GL_INVALID_ENUM}} is generated if {{param|format}} is not an accepted format constant.
  
{{code|GL_INVALID_ENUM}} is generated if ''type'' is not a type constant.
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{{code|GL_INVALID_ENUM}} is generated if {{param|type}} is not a type constant.
  
{{code|GL_INVALID_VALUE}} is generated if ''level'' is less than 0.
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{{code|GL_INVALID_VALUE}} is generated if {{param|level}} is less than 0.
  
{{code|GL_INVALID_VALUE}} may be generated if ''level'' is greater than log<sub>2</sub>(''max''), where ''max'' is the returned value of {{code|GL_MAX_TEXTURE_SIZE}}.
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{{code|GL_INVALID_VALUE}} may be generated if {{param|level}} is greater than log<sub>2</sub>(''max''), where ''max'' is the returned value of {{code|GL_MAX_TEXTURE_SIZE}}.
  
 
{{code|GL_INVALID_VALUE}} is generated if ''xoffset'' < 0, or if ''xoffset'' + ''width'' > ''w'', where ''w'' is the {{code|GL_TEXTURE_WIDTH}}. Note that ''w'' includes twice the border width.
 
{{code|GL_INVALID_VALUE}} is generated if ''xoffset'' < 0, or if ''xoffset'' + ''width'' > ''w'', where ''w'' is the {{code|GL_TEXTURE_WIDTH}}. Note that ''w'' includes twice the border width.
  
{{code|GL_INVALID_VALUE}} is generated if ''width'' is less than 0.
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{{code|GL_INVALID_VALUE}} is generated if {{param|width}} is less than 0.
  
{{code|GL_INVALID_OPERATION}} is generated if the texture array has not been defined by a previous [[GLAPI/glTexImage1D|glTexImage1D]] operation.
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{{code|GL_INVALID_OPERATION}} is generated if the texture array has not been defined by a previous {{apifunc|glTexImage1D}} operation.
  
{{code|GL_INVALID_OPERATION}} is generated if ''type'' is one of {{code|GL_UNSIGNED_BYTE_3_3_2}}, {{code|GL_UNSIGNED_BYTE_2_3_3_REV}}, {{code|GL_UNSIGNED_SHORT_5_6_5}}, or {{code|GL_UNSIGNED_SHORT_5_6_5_REV}} and ''format'' is not {{code|GL_RGB}}.
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{{code|GL_INVALID_OPERATION}} is generated if {{param|type}} is one of {{code|GL_UNSIGNED_BYTE_3_3_2}}, {{code|GL_UNSIGNED_BYTE_2_3_3_REV}}, {{code|GL_UNSIGNED_SHORT_5_6_5}}, or {{code|GL_UNSIGNED_SHORT_5_6_5_REV}} and {{param|format}} is not {{code|GL_RGB}}.
  
{{code|GL_INVALID_OPERATION}} is generated if ''type'' is one of {{code|GL_UNSIGNED_SHORT_4_4_4_4}}, {{code|GL_UNSIGNED_SHORT_4_4_4_4_REV}}, {{code|GL_UNSIGNED_SHORT_5_5_5_1}}, {{code|GL_UNSIGNED_SHORT_1_5_5_5_REV}}, {{code|GL_UNSIGNED_INT_8_8_8_8}}, {{code|GL_UNSIGNED_INT_8_8_8_8_REV}}, {{code|GL_UNSIGNED_INT_10_10_10_2}}, or {{code|GL_UNSIGNED_INT_2_10_10_10_REV}} and ''format'' is neither {{code|GL_RGBA}} nor {{code|GL_BGRA}}.
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{{code|GL_INVALID_OPERATION}} is generated if {{param|type}} is one of {{code|GL_UNSIGNED_SHORT_4_4_4_4}}, {{code|GL_UNSIGNED_SHORT_4_4_4_4_REV}}, {{code|GL_UNSIGNED_SHORT_5_5_5_1}}, {{code|GL_UNSIGNED_SHORT_1_5_5_5_REV}}, {{code|GL_UNSIGNED_INT_8_8_8_8}}, {{code|GL_UNSIGNED_INT_8_8_8_8_REV}}, {{code|GL_UNSIGNED_INT_10_10_10_2}}, or {{code|GL_UNSIGNED_INT_2_10_10_10_REV}} and {{param|format}} is neither {{code|GL_RGBA}} nor {{code|GL_BGRA}}.
  
 
{{code|GL_INVALID_OPERATION}} is generated if a non-zero buffer object name is bound to the {{code|GL_PIXEL_UNPACK_BUFFER}} target and the buffer object's data store is currently mapped.
 
{{code|GL_INVALID_OPERATION}} is generated if a non-zero buffer object name is bound to the {{code|GL_PIXEL_UNPACK_BUFFER}} target and the buffer object's data store is currently mapped.
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{{code|GL_INVALID_OPERATION}} is generated if a non-zero buffer object name is bound to the {{code|GL_PIXEL_UNPACK_BUFFER}} target and the data would be unpacked from the buffer object such that the memory reads required would exceed the data store size.
 
{{code|GL_INVALID_OPERATION}} is generated if a non-zero buffer object name is bound to the {{code|GL_PIXEL_UNPACK_BUFFER}} target and the data would be unpacked from the buffer object such that the memory reads required would exceed the data store size.
  
{{code|GL_INVALID_OPERATION}} is generated if a non-zero buffer object name is bound to the {{code|GL_PIXEL_UNPACK_BUFFER}} target and ''data'' is not evenly divisible into the number of bytes needed to store in memory a datum indicated by ''type''.
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{{code|GL_INVALID_OPERATION}} is generated if a non-zero buffer object name is bound to the {{code|GL_PIXEL_UNPACK_BUFFER}} target and {{param|data}} is not evenly divisible into the number of bytes needed to store in memory a datum indicated by {{param|type}}.
  
 
== Associated Gets ==
 
== Associated Gets ==
  
[[GLAPI/glGetTexImage|glGetTexImage]]
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{{apifunc|glGetTexImage}}
  
[[GLAPI/glGet|glGet]] with argument {{code|GL_PIXEL_UNPACK_BUFFER_BINDING}}
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{{apifunc|glGet}} with argument {{code|GL_PIXEL_UNPACK_BUFFER_BINDING}}
  
 
== See Also ==
 
== See Also ==
  
[[GLAPI/glActiveTexture|glActiveTexture]], [[GLAPI/glCopyTexImage1D|glCopyTexImage1D]], [[GLAPI/glCopyTexImage2D|glCopyTexImage2D]], [[GLAPI/glCopyTexSubImage1D|glCopyTexSubImage1D]], [[GLAPI/glCopyTexSubImage2D|glCopyTexSubImage2D]], [[GLAPI/glCopyTexSubImage3D|glCopyTexSubImage3D]], [[GLAPI/glPixelStore|glPixelStore]], [[GLAPI/glTexImage1D|glTexImage1D]], [[GLAPI/glTexImage2D|glTexImage2D]], [[GLAPI/glTexImage3D|glTexImage3D]], [[GLAPI/glTexParameter|glTexParameter]], [[GLAPI/glTexSubImage2D|glTexSubImage2D]], [[GLAPI/glTexSubImage3D|glTexSubImage3D]]
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{{apifunc|glActiveTexture}}, {{apifunc|glCopyTexImage1D}}, {{apifunc|glCopyTexImage2D}}, {{apifunc|glCopyTexSubImage1D}}, {{apifunc|glCopyTexSubImage2D}}, {{apifunc|glCopyTexSubImage3D}}, {{apifunc|glPixelStore}}, {{apifunc|glTexImage1D}}, {{apifunc|glTexImage2D}}, {{apifunc|glTexImage3D}}, {{apifunc|glTexParameter}}, {{apifunc|glTexSubImage2D}}, {{apifunc|glTexSubImage3D}}
  
 
== Copyright ==
 
== Copyright ==

Revision as of 21:26, 28 April 2012

glTexSubImage1D
Core in version 4.5

glTexSubImage1D: specify a one-dimensional texture subimage

Function Definition

 void glTexSubImage1D(GLenum target​, GLint level​, GLint xoffset​, GLsizei width​, GLenum format​, GLenum type​, const GLvoid * data​);
target
Specifies the target texture. Must be GL_TEXTURE_1D​.
level
Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap reduction image.
xoffset
Specifies a texel offset in the x direction within the texture array.
width
Specifies the width of the texture subimage.
format
Specifies the format of the pixel data. The following symbolic values are accepted: GL_RED​, GL_RG​, GL_RGB​, GL_BGR​, GL_RGBA​, and GL_BGRA​.
type
Specifies the data type of the pixel data. The following symbolic values are accepted: GL_UNSIGNED_BYTE​, GL_BYTE​, GL_UNSIGNED_SHORT​, GL_SHORT​, GL_UNSIGNED_INT​, GL_INT​, GL_FLOAT​, GL_UNSIGNED_BYTE_3_3_2​, GL_UNSIGNED_BYTE_2_3_3_REV​, GL_UNSIGNED_SHORT_5_6_5​, GL_UNSIGNED_SHORT_5_6_5_REV​, GL_UNSIGNED_SHORT_4_4_4_4​, GL_UNSIGNED_SHORT_4_4_4_4_REV​, GL_UNSIGNED_SHORT_5_5_5_1​, GL_UNSIGNED_SHORT_1_5_5_5_REV​, GL_UNSIGNED_INT_8_8_8_8​, GL_UNSIGNED_INT_8_8_8_8_REV​, GL_UNSIGNED_INT_10_10_10_2​, and GL_UNSIGNED_INT_2_10_10_10_REV​.
data
Specifies a pointer to the image data in memory.

Description

Texturing maps a portion of a specified texture image onto each graphical primitive for which texturing is enabled. To enable or disable one-dimensional texturing, call glEnable and glDisable with argument GL_TEXTURE_1D​.

glTexSubImage1D redefines a contiguous subregion of an existing one-dimensional texture image. The texels referenced by data​ replace the portion of the existing texture array with x indices xoffset​ and xoffset + width - 1, inclusive. This region may not include any texels outside the range of the texture array as it was originally specified. It is not an error to specify a subtexture with width of 0, but such a specification has no effect.

If a non-zero named buffer object is bound to the GL_PIXEL_UNPACK_BUFFER​ target (see glBindBuffer) while a texture image is specified, data​ is treated as a byte offset into the buffer object's data store.

Notes

glPixelStore modes affect texture images.

glTexSubImage1D specifies a one-dimensional subtexture for the current texture unit, specified with glActiveTexture.

Errors

GL_INVALID_ENUM​ is generated if target​ is not one of the allowable values.

GL_INVALID_ENUM​ is generated if format​ is not an accepted format constant.

GL_INVALID_ENUM​ is generated if type​ is not a type constant.

GL_INVALID_VALUE​ is generated if level​ is less than 0.

GL_INVALID_VALUE​ may be generated if level​ is greater than log2(max), where max is the returned value of GL_MAX_TEXTURE_SIZE​.

GL_INVALID_VALUE​ is generated if xoffset < 0, or if xoffset + width > w, where w is the GL_TEXTURE_WIDTH​. Note that w includes twice the border width.

GL_INVALID_VALUE​ is generated if width​ is less than 0.

GL_INVALID_OPERATION​ is generated if the texture array has not been defined by a previous glTexImage1D operation.

GL_INVALID_OPERATION​ is generated if type​ is one of GL_UNSIGNED_BYTE_3_3_2​, GL_UNSIGNED_BYTE_2_3_3_REV​, GL_UNSIGNED_SHORT_5_6_5​, or GL_UNSIGNED_SHORT_5_6_5_REV​ and format​ is not GL_RGB​.

GL_INVALID_OPERATION​ is generated if type​ is one of GL_UNSIGNED_SHORT_4_4_4_4​, GL_UNSIGNED_SHORT_4_4_4_4_REV​, GL_UNSIGNED_SHORT_5_5_5_1​, GL_UNSIGNED_SHORT_1_5_5_5_REV​, GL_UNSIGNED_INT_8_8_8_8​, GL_UNSIGNED_INT_8_8_8_8_REV​, GL_UNSIGNED_INT_10_10_10_2​, or GL_UNSIGNED_INT_2_10_10_10_REV​ and format​ is neither GL_RGBA​ nor GL_BGRA​.

GL_INVALID_OPERATION​ is generated if a non-zero buffer object name is bound to the GL_PIXEL_UNPACK_BUFFER​ target and the buffer object's data store is currently mapped.

GL_INVALID_OPERATION​ is generated if a non-zero buffer object name is bound to the GL_PIXEL_UNPACK_BUFFER​ target and the data would be unpacked from the buffer object such that the memory reads required would exceed the data store size.

GL_INVALID_OPERATION​ is generated if a non-zero buffer object name is bound to the GL_PIXEL_UNPACK_BUFFER​ target and data​ is not evenly divisible into the number of bytes needed to store in memory a datum indicated by type​.

Associated Gets

glGetTexImage

glGet with argument GL_PIXEL_UNPACK_BUFFER_BINDING​

See Also

glActiveTexture, glCopyTexImage1D, glCopyTexImage2D, glCopyTexSubImage1D, glCopyTexSubImage2D, glCopyTexSubImage3D, glPixelStore, glTexImage1D, glTexImage2D, glTexImage3D, glTexParameter, glTexSubImage2D, glTexSubImage3D

Copyright

Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.