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OpenGL CgFX and OpenGL compatibility

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I am in trouble with CgFX and OpenGL. I don''t know why but I can''t compile shaders with vp20 vp30 fp20 and fp30 profiles. I get the error "Unknown profile vp20". My graphic card is a GeForce4 Ti4200 and Cg program compile with these profiles, so I don''t understand what is the matter with CgFX. Moreover I would like to know how CgFX files running on OpenGL are compatible with Direct3D fx files? especially features other that vertex/pixel shader (i.e. Texture Combine, Blending, etc.) Thanks in advance. PS: May be someone know where I can''t find some resource about OpenGL+CgFX???

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vp20 compiles on a GF4?! You sure?

edit: Just checked my CG book. Yeah vp20 should be OK on a GF4. vp30 and fp30 are unsupported.

"C lets you shoot yourself in the foot rather easily. C++ allows you to reuse the bullet!"

[edited by - CPPMaster Poppet on May 29, 2004 10:45:19 AM]

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