2012 Khronos Group
glTexBufferRange 3G
glTexBufferRange bind a range of a buffer's data store to a buffer texture

## C Specification

void `glTexBufferRange` GLenum target GLenum internalFormat GLuint buffer GLintptr offset GLsizeiptr size

## Parameters

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

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/.