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(parent: 1e3c58f) | patch
i965/fs: Allow specifying arbitrary execution sizes up to 32 to FIND_LIVE_CHANNEL.
authorFrancisco Jerez <currojerez@riseup.net>
Thu, 19 May 2016 00:34:14 +0000 (17:34 -0700)
committerFrancisco Jerez <currojerez@riseup.net>
Sat, 28 May 2016 06:29:04 +0000 (23:29 -0700)
commita5a08109608406438109bfa5def5a2af788d2840
treef2a0f17a130037037b2dc29d86accc292a06361dtree
parent1e3c58ffaf35c6d37284b53c7b742c1bf7f2e67ccommit | diff
i965/fs: Allow specifying arbitrary execution sizes up to 32 to FIND_LIVE_CHANNEL.

Due to a Gen7-specific hardware bug native 32-wide instructions get
the lower 16 bits of the execution mask applied incorrectly to both
halves of the instruction, so the MOV trick we currently use wouldn't
work.  Instead emit multiple 16-wide MOV instructions in 32-wide mode
in order to cover the whole execution mask.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
src/mesa/drivers/dri/i965/brw_eu_emit.c diff | blob | history