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authorChris Wilson <chris@chris-wilson.co.uk>2014-10-22 19:40:14 +0100
committerChris Wilson <chris@chris-wilson.co.uk>2014-10-22 19:41:19 +0100
commitdee9ea29917dd5ef4a7de6570cd091f08d334df9 (patch)
tree222f27986efb7b59b840dab2556f195f477b1ac1
parent7a9bdadd71730adc5266bc6758982abec5917b93 (diff)
sna/gen8: Override the URB output from the VS
Using the override seems to be marginally faster. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
-rw-r--r--src/sna/gen8_render.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/sna/gen8_render.c b/src/sna/gen8_render.c
index a6a5dd29..d375753e 100644
--- a/src/sna/gen8_render.c
+++ b/src/sna/gen8_render.c
@@ -922,6 +922,8 @@ gen8_emit_sf(struct sna *sna, bool has_mask)
OUT_BATCH(GEN8_3DSTATE_SBE | (4 - 2));
OUT_BATCH(num_sf_outputs << SBE_NUM_OUTPUTS_SHIFT |
+ SBE_FORCE_VERTEX_URB_READ_LENGTH | /* forced is faster */
+ SBE_FORCE_VERTEX_URB_READ_OFFSET |
1 << SBE_URB_ENTRY_READ_LENGTH_SHIFT |
1 << SBE_URB_ENTRY_READ_OFFSET_SHIFT);
OUT_BATCH(0);