tex1DARRAYsize - returns the size of a given texture array image for a given level of detail.
int3 tex1DARRAYsize(sampler1DARRAY samp, int lod)
int3 tex1DARRAYsize(isampler1DARRAY samp, int lod)
int3 tex1DARRAYsize(usampler1DARRAY samp, int lod)
Sampler to be queried for size.
Level of detail to obtain size.
Given a sampler array and a level of detail the size of one element of the corresponding texture
array for a given level of detail is returned as a result of the operation.
tex1DARRAYsize is only supported in gp4 and newer profiles.