summaryrefslogtreecommitdiffstats
path: root/src/gbm/main/backend.h
diff options
context:
space:
mode:
authorIago Toral Quiroga <[email protected]>2016-08-18 11:15:56 +0200
committerSamuel Iglesias Gonsálvez <[email protected]>2017-01-03 11:26:51 +0100
commit2b57adad0056273e38d9a9736cd98be95c0deb07 (patch)
tree5eb8828d8e0b8502568ac4b5b16ca5159eeb9936 /src/gbm/main/backend.h
parentc3edacaa288ae01c0f37e645737feeeb48f2c3f2 (diff)
i965/vec4/scalarize_df: support more swizzles via vstride=0
By exploiting gen7's hardware decompression bug with vstride=0 we gain the capacity to support additional swizzle combinations. This also fixes ZW writes from X/Y channels like in: mov r2.z:df r0.xxxx:df Because DF regions use 2-wide rows with a vstride of 2, the region generated for the source would be r0<2,2,1>.xyxy:DF, which is equivalent to r0.xxzz, so we end up writing r0.z in r2.z instead of r0.x. Using a vertical stride of 0 in these cases we get to replicate the XX swizzle and write what we want. Reviewed-by: Matt Turner <[email protected]>
Diffstat (limited to 'src/gbm/main/backend.h')
0 files changed, 0 insertions, 0 deletions