Mesa (master): r600g/radeonsi: Prefer VRAM for CPU -> GPU streaming buffers
Michel Dänzer
daenzer at kemper.freedesktop.org
Fri Aug 1 02:41:08 UTC 2014
Module: Mesa
Branch: master
Commit: 150ac07b855b5c5f879bf6ce9ca421ccd1a6c938
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=150ac07b855b5c5f879bf6ce9ca421ccd1a6c938
Author: Michel Dänzer <michel.daenzer at amd.com>
Date: Wed Jun 25 18:36:43 2014 +0900
r600g/radeonsi: Prefer VRAM for CPU -> GPU streaming buffers
Reviewed-by: Marek Olšák <marek.olsak at amd.com>
---
src/gallium/drivers/radeon/r600_buffer_common.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/src/gallium/drivers/radeon/r600_buffer_common.c b/src/gallium/drivers/radeon/r600_buffer_common.c
index 154c33d..d747cbc 100644
--- a/src/gallium/drivers/radeon/r600_buffer_common.c
+++ b/src/gallium/drivers/radeon/r600_buffer_common.c
@@ -110,14 +110,21 @@ bool r600_init_resource(struct r600_common_screen *rscreen,
enum radeon_bo_flag flags = 0;
switch (res->b.b.usage) {
- case PIPE_USAGE_DYNAMIC:
- case PIPE_USAGE_STREAM:
- flags = RADEON_FLAG_GTT_WC;
- /* fall through */
case PIPE_USAGE_STAGING:
/* Transfers are likely to occur more often with these resources. */
res->domains = RADEON_DOMAIN_GTT;
break;
+ case PIPE_USAGE_STREAM:
+ case PIPE_USAGE_DYNAMIC:
+ /* Older kernels didn't always flush the HDP cache before
+ * CS execution
+ */
+ if (rscreen->info.drm_minor < 40) {
+ res->domains = RADEON_DOMAIN_GTT;
+ flags = RADEON_FLAG_GTT_WC;
+ break;
+ }
+ /* fall through */
case PIPE_USAGE_DEFAULT:
case PIPE_USAGE_IMMUTABLE:
default:
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