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naan Junior Member Posts: 2 From: india Registered: 05-26-2004 |
i had implemented de boer's paper (geo mip mapping). in order to speed up vertex morphing i tried to use vertex programs, but it turned out that we had very little calculations to do on the GPU. the performance of the program instead of getting boosted , got deteriorated. same program with no vertex program mode runs faster. i havn't got any idea why this is so. can any body tell me the reason. (i guess that the presence of a few function calls for setting the parameters for the vertex program, even when no calculations are being done may be the cause) |
GUMP Member Posts: 1335 From: Melbourne, FL USA Registered: 11-09-2002 |
Fixed Function pipeline is almost always faster than the Programmable pipeline. Then again, you could post your code; it could be a mistake somewhere. |