Comment # 15
on bug 103544
from Roland Scheidegger
(In reply to Roland Scheidegger from comment #14) > - the driver doesn't use the ieee variants consistently (e.g. muls from > lerps). > There's also some inconsistencies - for r600, the comments say for non-gl > usage the ieee variant should be used for rcp, however eg/cayman will use > that anyway, and I don't think handling it differently between these drivers > is done on purpose. Actually that seems to be the problem - on r600, rcp/rsq_clamped are used (btw does someone know why rsq has its own code expansion on r600, but not eg/cayman)? But eg/cayman use rcp/rsq_ieee. It looks like if I use rcp_clamped instead that is enough to fix everything (regardless what rsq/min/max are using).
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