Module: Mesa
Branch: master
Commit: 7b4276d7acf2e0f77044cb50caa6ad936fa78786
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=7b4276d7acf2e0f77044cb50caa6ad936fa78786

Author: Michel Dänzer <michel.daen...@amd.com>
Date:   Tue Aug 26 18:21:50 2014 +0900

r600g,radeonsi: Always use GTT again for PIPE_USAGE_STREAM buffers

Putting those in VRAM can cause long pauses due to buffers being moved
into / out of VRAM.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=84662
Cc: mesa-sta...@lists.freedesktop.org
Reviewed-by: Alex Deucher <alexander.deuc...@amd.com>

---

 src/gallium/drivers/radeon/r600_buffer_common.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/radeon/r600_buffer_common.c 
b/src/gallium/drivers/radeon/r600_buffer_common.c
index 227a221..b7306d7 100644
--- a/src/gallium/drivers/radeon/r600_buffer_common.c
+++ b/src/gallium/drivers/radeon/r600_buffer_common.c
@@ -110,11 +110,13 @@ bool r600_init_resource(struct r600_common_screen 
*rscreen,
        enum radeon_bo_flag flags = 0;
 
        switch (res->b.b.usage) {
+       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

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