GLAPI/glTexSubImage1D: Difference between revisions

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; target
; target
: Specifies the target texture. Must be {{code|GL_TEXTURE_1D}}.
: Specifies the target texture. Must be {{enum|GL_TEXTURE_1D}}.
; level
; level
: Specifies the level-of-detail number. Level 0 is the base image level. Level ''n'' is the ''n''th mipmap reduction image.
: Specifies the level-of-detail number. Level 0 is the base image level. Level ''n'' is the ''n''th mipmap reduction image.
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; width
; width
: Specifies the width of the texture subimage.
: Specifies the width of the texture subimage.
; format
{{glapi pixeltransferupparams}}
: Specifies the format of the pixel data. The following symbolic values are accepted: {{code|GL_RED}}, {{code|GL_RG}}, {{code|GL_RGB}}, {{code|GL_BGR}}, {{code|GL_RGBA}}, and {{code|GL_BGRA}}.
; type
: Specifies the data type of the pixel data. The following symbolic values are accepted: {{code|GL_UNSIGNED_BYTE}}, {{code|GL_BYTE}}, {{code|GL_UNSIGNED_SHORT}}, {{code|GL_SHORT}}, {{code|GL_UNSIGNED_INT}}, {{code|GL_INT}}, {{code|GL_FLOAT}}, {{code|GL_UNSIGNED_BYTE_3_3_2}}, {{code|GL_UNSIGNED_BYTE_2_3_3_REV}}, {{code|GL_UNSIGNED_SHORT_5_6_5}}, {{code|GL_UNSIGNED_SHORT_5_6_5_REV}}, {{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}}, and {{code|GL_UNSIGNED_INT_2_10_10_10_REV}}.
; data
: Specifies a pointer to the image data in memory.


== 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 {{apifunc|glEnable}} and {{apifunc|glDisable}} with argument {{code|GL_TEXTURE_1D}}.
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 {{enum|GL_TEXTURE_1D}}.


'''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.
'''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 {{apifunc|glBindBuffer}}) while a texture image is specified, {{param|data}} is treated as a byte offset into the buffer object's data store.
If a non-zero named buffer object is bound to the {{enum|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 ==
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'''glTexSubImage1D''' specifies a one-dimensional subtexture for the current texture unit, specified with {{apifunc|glActiveTexture}}.
'''glTexSubImage1D''' specifies a one-dimensional subtexture for the current texture unit, specified with {{apifunc|glActiveTexture}}.
{{enum|GL_STENCIL_INDEX}} is accepted for {{param|format}} only if the GL version is 4.4 or higher.


== Errors ==
== Errors ==


{{code|GL_INVALID_ENUM}} is generated if {{param|target}} is not one of the allowable values.
{{enum|GL_INVALID_ENUM}} is generated if {{param|target}} is not one of the allowable values.
 
{{enum|GL_INVALID_ENUM}} is generated if {{param|format}} is not an accepted format constant.


{{code|GL_INVALID_ENUM}} is generated if {{param|format}} is not an accepted format constant.
{{enum|GL_INVALID_ENUM}} is generated if {{param|type}} is not a type constant.


{{code|GL_INVALID_ENUM}} is generated if {{param|type}} is not a type constant.
{{enum|GL_INVALID_VALUE}} is generated if {{param|level}} is less than 0.


{{code|GL_INVALID_VALUE}} is generated if {{param|level}} is less than 0.
{{enum|GL_INVALID_VALUE}} may be generated if {{param|level}} is greater than log<sub>2</sub>(''max''), where ''max'' is the returned value of {{enum|GL_MAX_TEXTURE_SIZE}}.


{{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}}.
{{enum|GL_INVALID_VALUE}} is generated if ''xoffset'' < 0, or if ''xoffset'' + ''width'' > ''w'', where ''w'' is the {{enum|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.
{{enum|GL_INVALID_VALUE}} is generated if {{param|width}} is less than 0.


{{code|GL_INVALID_VALUE}} is generated if {{param|width}} is less than 0.
{{enum|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 the texture array has not been defined by a previous {{apifunc|glTexImage1D}} operation.
{{enum|GL_INVALID_OPERATION}} is generated if {{param|type}} is one of {{enum|GL_UNSIGNED_BYTE_3_3_2}}, {{enum|GL_UNSIGNED_BYTE_2_3_3_REV}}, {{enum|GL_UNSIGNED_SHORT_5_6_5}}, or {{enum|GL_UNSIGNED_SHORT_5_6_5_REV}} and {{param|format}} is not {{enum|GL_RGB}}.


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


{{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}}.
{{enum|GL_INVALID_OPERATION}} is generated if {{param|format}} is {{enum|GL_STENCIL_INDEX}} and the base internal format is not {{enum|GL_STENCIL_INDEX}}.


{{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.
{{enum|GL_INVALID_OPERATION}} is generated if a non-zero buffer object name is bound to the {{enum|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 data would be unpacked from the buffer object such that the memory reads required would exceed the data store size.
{{enum|GL_INVALID_OPERATION}} is generated if a non-zero buffer object name is bound to the {{enum|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 {{param|data}} is not evenly divisible into the number of bytes needed to store in memory a datum indicated by {{param|type}}.
{{enum|GL_INVALID_OPERATION}} is generated if a non-zero buffer object name is bound to the {{enum|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 ==
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{{apifunc|glGetTexImage}}
{{apifunc|glGetTexImage}}


{{apifunc|glGet}} with argument {{code|GL_PIXEL_UNPACK_BUFFER_BINDING}}
{{apifunc|glGet}} with argument {{enum|GL_PIXEL_UNPACK_BUFFER_BINDING}}


== See Also ==
== See Also ==


{{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}}
{{apifunc|glActiveTexture}}, {{apifunc|glBindTexture}}, {{apifunc|glTexSubImage2D}}, {{apifunc|glTexSubImage3D}}, {{apifunc|glCopyTexImage1D}}, {{apifunc|glTexImage1D}}, {{apifunc|glTexStorage1D}}, {{apifunc|glTextureView}}, {{apifunc|glPixelStore}}


== Copyright ==
== 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/ http://oss.sgi.com/projects/FreeB/].
Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see [https://khronos.org/registry/OpenGL-Refpages/LICENSES/LicenseRef-FreeB.txt LicenseRef-FreeB].


[[Category:Core API Reference|TexSubImage1D]]
[[Category:Core API Reference|TexSubImage1D]]
[[Category:Core API Ref Texturing|TexSubImage1D]]
[[Category:Core API Ref Texturing|TexSubImage1D]]
[[Category:Texture Object API State Functions|TexSubImage1D]]

Latest revision as of 22:24, 5 February 2021

glTexSubImage1D
Core in version 4.6
Core since version 1.0

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. For transfers of depth, stencil, or depth/stencil data, you must use GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, or GL_DEPTH_STENCIL, where appropriate. For transfers of normalized integer or floating-point color image data, you must use one of the following: GL_RED, GL_GREEN, GL_BLUE, GL_RG, GL_RGB, GL_BGR, GL_RGBA, and GL_BGRA. For transfers of non-normalized integer data, you must use one of the following: GL_RED_INTEGER, GL_GREEN_INTEGER, GL_BLUE_INTEGER, GL_RG_INTEGER, GL_RGB_INTEGER, GL_BGR_INTEGER, GL_RGBA_INTEGER, and GL_BGRA_INTEGER.
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, or if a buffer is bound to GL_PIXEL_UNPACK_BUFFER, this provides an integer offset into the bound buffer object. If a buffer is not bound to GL_PIXEL_UNPACK_BUFFER, and this parameter is NULL, no Pixel Transfer will be performed.


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.

GL_STENCIL_INDEX is accepted for format​ only if the GL version is 4.4 or higher.

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 format​ is GL_STENCIL_INDEX and the base internal format is not GL_STENCIL_INDEX.

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, glBindTexture, glTexSubImage2D, glTexSubImage3D, glCopyTexImage1D, glTexImage1D, glTexStorage1D, glTextureView, glPixelStore

Copyright

Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see LicenseRef-FreeB.

Retrieved from "https://wikis.khronos.org/opengl/index.php?title=GLAPI/glTexSubImage1D&oldid=14823"