From: José F. <j_r...@ya...> - 2002-04-12 14:38:37
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On 2002.04.12 14:43 José Fonseca wrote: > On 2002.04.10 19:40 José Fonseca wrote: >> >> ... since the specs give some tolerance it would be nice to run the >> conformance tests with different settings in mmx_blend.S, specially the >> "single multiply w/o rouding" ... > > I've started to play with glean and I tried to check this myself, but it > seems there is no effect in the results no matter what changes I make in > mmx_blend.S. ... > I've come to the conclusion that glean requirements lowered quite a deal! It even passes making s = (p*a + q*(255 - a)) >> 8 without a warning, thought it recognizes the less accuracy when comparing with the default implementation. The only way I managed to make it fail was setting a &= 0xf0, to reduce heavily the precision of results!! It seems that there is a bug on glean. I'm using latest CVS. I'll try to run the glperf tests now and see if I can get to the bottom of this issue. José Fonseca |