Am 31.07.2014 um 11:43 schrieb Michel Dänzer:
From: Michel Dänzer michel.daenzer@amd.com
Signed-off-by: Michel Dänzer michel.daenzer@amd.com
At least for PIPE_USAGE_STREAM buffers that's a bad idea, cause they are used by VDPAU to read back to data to a CPU buffer and that's really slow from VRAM.
Christian.
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_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 */