GLTEXBUFFERRANGE(3G)

NAME
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/.