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Old 10-03-06, 08:56 AM   #1
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Join Date: Dec 2002
Posts: 47
Default problem upgrading from cg 1.4.1 to cg 1.5


After upgrading to Cg 1.5, some of my fragment shader (which runs fine with cg 1.4.1) no more load : they continue to compile fine, bit i have an error when loading the shader.

After some investigation, i saw that the problem is with texRECT family of functions :

1/ if a shader contains f3texRECT, there is an error, replacing f3texRECT by texRECT solve the problem.

2/ texRECT use to be polymorphic, there is both texRECT(samplerRECT, float3) and
texRECT(samplerRECT, float2), with prior version of Cg both of these function run fine, but with Cg 1.5, only texRECT(samplerRECT, float3) load correctly.

I have made tests with both a 7900gt card and a quadro 4400, with linux 8774 and 9625 beta,
with same results.

Does this is due to new spec of Cg, or is this just temporary bugs that's belongs to Cg 1.5 ?

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