Comment # 10
on bug 103544
from Ilia Mirkin
(In reply to Ilia Mirkin from comment #9) > Created attachment 135237 [details] [review] [review] > enable simple_float logic for blending > > Entirely untested (not even compiled) patch to force blending to be 0*NaN=0. > Looks like radeonsi sets this bit, so it's not completely crazy. Note that it looks like SIMPLE_FLOAT merely makes an optimization which allows a GL_ZERO factor to cause a 0 to result... sometimes. But it could be enough here. If an infinity or NaN makes it into a dest buffer, without this it will ruin any future blending done, even if there's an attempt to override the destination value. Patch is available at https://patchwork.freedesktop.org/patch/186599/ (although I'll have to rework the description)
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