GLAPI/glTexBufferRange

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glTexBufferRange
Core in version 4.6
Core since version 4.3
Core ARB extension ARB_texture_buffer_range

glTexBufferRange: bind a range of a buffer's data store to a buffer texture

Function Definition

 void glTexBufferRange(GLenum target​, GLenum internalFormat​, GLuint buffer​, GLintptr offset​, GLsizeiptr size​);
target
Specifies the target of the operation and must be GL_TEXTURE_BUFFER.
internalFormat
Specifies the internal format of the data in the store belonging to buffer​.
buffer
Specifies the name of the buffer object whose storage to attach to the active buffer texture.
offset
Specifies the offset of the start of the range of the buffer's data store to attach.
size
Specifies the size of the range of the buffer's data store to attach.

Description

glTexBufferRange attaches the a range of the data store of the buffer object named buffer​ to the active buffer texture, and specifies the internal format for the texel array found in the attached buffer object. If buffer​ is zero, any buffer object attached to the buffer texture is detached and no new buffer object is attached. If buffer​ is non-zero, it must be the name of an existing buffer object. target​ must be GL_TEXTURE_BUFFER. The start of the range is specified by offset​ and the size of the range is specified by size​, both measured in basic machine units. offset​ must be greater than or equal to zero, size​ must be greater than zero, and the sum of offset​ and size​ not exceed the value of GL_BUFFER_SIZE for buffer​. Furthermore, offset​ must be an integer multiple of the value of GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT. internalformat​ specifies the storage format, and must be one of the following sized internal formats:

Component Sized Internal Format Base Type Components Norm 0 1 2 3 GL_R8 ubyte 1 YES R 0 0 1 GL_R16 ushort 1 YES R 0 0 1 GL_R16F half 1 NO R 0 0 1 GL_R32F float 1 NO R 0 0 1 GL_R8I byte 1 NO R 0 0 1 GL_R16I short 1 NO R 0 0 1 GL_R32I int 1 NO R 0 0 1 GL_R8UI ubyte 1 NO R 0 0 1 GL_R16UI ushort 1 NO R 0 0 1 GL_R32UI uint 1 NO R 0 0 1 GL_RG8 ubyte 2 YES R G 0 1 GL_RG16 ushort 2 YES R G 0 1 GL_RG16F half 2 NO R G 0 1 GL_RG32F float 2 NO R G 0 1 GL_RG8I byte 2 NO R G 0 1 GL_RG16I short 2 NO R G 0 1 GL_RG32I int 2 NO R G 0 1 GL_RG8UI ubyte 2 NO R G 0 1 GL_RG16UI ushort 2 NO R G 0 1 GL_RG32UI uint 2 NO R G 0 1 GL_RGB32F float 3 NO R G B 1 GL_RGB32I int 3 NO R G B 1 GL_RGB32UI uint 3 NO R G B 1 GL_RGBA8 uint 4 YES R G B A GL_RGBA16 short 4 YES R G B A GL_RGBA16F half 4 NO R G B A GL_RGBA32F float 4 NO R G B A GL_RGBA8I byte 4 NO R G B A GL_RGBA16I short 4 NO R G B A GL_RGBA32I int 4 NO R G B A GL_RGBA8UI ubyte 4 NO R G B A GL_RGBA16UI ushort 4 NO R G B A GL_RGBA32UI uint 4 NO R G B A

Errors

GL_INVALID_ENUM is generated if target​ is not GL_TEXTURE_BUFFER.

GL_INVALID_VALUE is generated if offset​ is less than zero.

GL_INVALID_VALUE is generated if size​ is less than or equal to zero.

GL_INVALID_VALUE is generated if offset​ + size​ is greater than the value of GL_BUFFER_SIZE for buffer​.

GL_INVALID_VALUE is generated if offset​ is not an integer multiple of the value of GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT.

Associated Gets

glGet with argument GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT

glGetTexLevelParameter with arguments GL_TEXTURE_BUFFER_OFFSET or GL_TEXTURE_BUFFER_SIZE.

See Also

glActiveTexture, glBindTexture, glGenBuffers, glBufferData, glTexBuffer

Copyright

Copyright © 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. http://opencontent.org/openpub/.