Name

texBUFsize - returns the size of a given texture image for a given level of detail.

Synopsis

int3 texBUFsize(samplerBUF samp, int lod)

int3 texBUFsize(isamplerBUF samp, int lod)

int3 texBUFsize(usamplerBUF samp, int lod)

Parameters

samp

Sampler to be queried for size.

lod

Level of detail to obtain size.

Description

Given a sampler and a level of detail the size (width in x, height in y, and depth in z) of the corresponding texture buffer is returned as the result of the operation.

Because texture buffers lack mipmaps, the lod parameter is unused.

Texture buffer samplers are created with the EXT_texture_buffer_object extension. See:

  http://developer.download.nvidia.com/opengl/specs/GL_EXT_texture_buffer_object.txt

Texture buffer object samplers roughly correspond to the tbuffer functionality of DirectX 10.

Profile Support

texBUF is supported in gp4vp, gp4gp, and gp4fp profiles.

See Also

tex1Dsize, texBUF