   projective textures and env bump mapping
  I''m trying to connect these two techniques, but when I enable env bump mapping the result is incorrect. I try used these techniques separately, and they working correctly.I hava GF 3 TI card, and I suppose that might be a problem.Can anyone tell me what can i do ?Thanks for help. 
  If you mean you''re using the texbem or texbeml pixel shader instruction (and I guess the FFP texture op equivalent), then a GF3 just can''t do projective UVs at the same time. A GF4 can, and I guess Radeons >= 8500 can, using a 2 phase ps_1_4 program.Check the D3DPTEXTURECAPS_NOPROJECTEDBUMPENV cap in TextureCaps.You''ll just have to stick with non-projective UVs and tesselate your geometry if need be, or if you''re doing a water effect (or similar), you might be able to switch to doing a fullscreen pass with stencil to cut out the water surface.HTHMatt Halpin 