From dee9ea29917dd5ef4a7de6570cd091f08d334df9 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 22 Oct 2014 19:40:14 +0100 Subject: [PATCH] sna/gen8: Override the URB output from the VS Using the override seems to be marginally faster. Signed-off-by: Chris Wilson --- src/sna/gen8_render.c | 2 ++ 1 file changed, 2 insertions(+) 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);