VolumeTextures & IDirect3DVolumeTexture9
From what I understand this is a different way of interpreting texture stages. And since it inherits for the same base type as IDirect3DTexture9 it should fit perfectly into the normal pipeline.
However, I'm confused how a vertex would actually use this info with a standard FVF. Shouldn't there be a tv, tv, and tw texture coordinate for each vertex? Is the depth handled in some other special way? I can't find any info through Google cause it seems like nobody uses IDirect3DVolumeTexture9... are they that worthless?
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