https://bugs.freedesktop.org/show_bug.cgi?id=66067
--- Comment #10 from Nicholas Miell <nmi...@gmail.com> --- To quote the Cg tutorial: "Notice that the code for the shadow map query is virtually identical to the code for the projective texture lookup in Example 9-6. To a Cg programmer, shadow maps are like other projective textures, except that instead of returning a texture color,tex2Dproj returns a value representing shadow coverage. The underlying hardware implementation automatically recognizes when a texture is a depth texture (instead of a color texture) and performs the shadow map comparison instead of an ordinary texture fetch." I suspect that the Cg compiler always compiles tex2Dproj to a TEX instruction with the SHADOW2D target and relies on OpenGL implementations always transparently using normal sampling on non-depth non-stencil textures. -- You are receiving this mail because: You are the assignee for the bug.
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