Pixel Shader 2.0 precision article at DigitLife.
- Thread starter BoardBonobo
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Some things stood out for me:
IIRC, Texture coordinate registers aren't supposed to obey the partial precision hint, so the NV35 behavior is in spec, and the NV30-NV34 behavior is not, even with the partial precision hint applied.
AFAIK, the drivers that exhibit that behavior are WHQL certified for the NV35 only. A bit of an abuse of the system by nVidia, I think, though that doesn't mean that the article's criticism of Microsoft's WHQL certification might not have some validity in that regard.
IIRC, Texture coordinate registers aren't supposed to obey the partial precision hint, so the NV35 behavior is in spec, and the NV30-NV34 behavior is not, even with the partial precision hint applied.
AFAIK, the drivers that exhibit that behavior are WHQL certified for the NV35 only. A bit of an abuse of the system by nVidia, I think, though that doesn't mean that the article's criticism of Microsoft's WHQL certification might not have some validity in that regard.
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