From: Michel Dänzer <michel.daenzer@amd.com>
Date: Tue, 15 Apr 2014 05:45:13 +0000 (+0900)
Subject: r600g/radeonsi: Map transfer staging texture unsynchronized when possible
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6ac5a5e383830d711793e425ddd285e17ffcd235;p=mesa.git

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@amd.com>
---

diff --git a/src/gallium/drivers/radeon/r600_texture.c b/src/gallium/drivers/radeon/r600_texture.c
index 293eeaa0890..c410543b81b 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;
 	}