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Add support for lowering TRUNC using the following sequence:
FRC tmpA, |src|
SUB tmpA, |src|, tmpA
CMP dst, -tmpA, tmpA
Note that this is incompatible with FRC lowering.
Signed-off-by: Russell King <[email protected]>
Reviewed-by: Rob Clark <[email protected]>
Signed-off-by: Rob Clark <[email protected]>
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Add support for lowering FLR and CEIL to FRC/SUB and FRC/ADD
instructions for GPUs that support FRC but not FLR or CEIL. Since
these uses FRC, it is invalid to ask for FLR or CEIL to be lowered
along with FRC, so add an assert to catch this invalid configuration.
We also need to deal with FLR instructions emitted by the lowering
code. Fix these up with the FRC+SUB equivalent when FLR lowering is
enabled.
Signed-off-by: Russell King <[email protected]>
Reviewed-by: Rob Clark <[email protected]>
Reviewed-by: Christian Gmeiner <[email protected]>
Signed-off-by: Rob Clark <[email protected]>
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v2: actually do perspective divide for RECT/SHADOWRECT
Signed-off-by: Rob Clark <[email protected]>
Reviewed-by: Ilia Mirkin <[email protected]>
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Acked-by: Rob Clark <[email protected]>
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Acked-by: Rob Clark <[email protected]>
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Lots of drivers need to transform the weird instructions in TGSI into
reasonable scalar ops, and this code can make those translations
canonical.
Acked-by: Rob Clark <[email protected]>
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