Mesa (master): r600g/radeonsi: Map transfer staging texture unsynchronized when possible
Michel Dänzer
daenzer at kemper.freedesktop.org
Wed Apr 16 04:57:21 UTC 2014
Module: Mesa
Branch: master
Commit: 6ac5a5e383830d711793e425ddd285e17ffcd235
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=6ac5a5e383830d711793e425ddd285e17ffcd235
Author: Michel Dänzer <michel.daenzer at amd.com>
Date: Tue Apr 15 14:45:13 2014 +0900
r600g/radeonsi: Map transfer staging texture unsynchronized when possible
The transfer staging texture is always freshly allocated, so for write-only
transfers we don't need to explicitly wait for the BO to become idle.
Squeezes a few hundered MB/s more out of x11perf -shmput500 with glamor.
Reviewed-by: Marek Olšák <marek.olsak at amd.com>
---
src/gallium/drivers/radeon/r600_texture.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/gallium/drivers/radeon/r600_texture.c b/src/gallium/drivers/radeon/r600_texture.c
index 293eeaa..c410543 100644
--- a/src/gallium/drivers/radeon/r600_texture.c
+++ b/src/gallium/drivers/radeon/r600_texture.c
@@ -1039,6 +1039,8 @@ static void *r600_texture_transfer_map(struct pipe_context *ctx,
if (trans->staging) {
buf = trans->staging;
+ if (!rtex->is_depth && !(usage & PIPE_TRANSFER_READ))
+ usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
} else {
buf = &rtex->resource;
}
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