From: Marek Olšák <[email protected]>
---
src/gallium/drivers/radeon/r600_buffer_common.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/gallium/drivers/radeon/r600_buffer_common.c
b/src/gallium/drivers/radeon/r600_buffer_common.c
index c6f4d0d..da6f020 100644
--- a/src/gallium/drivers/radeon/r600_buffer_common.c
+++ b/src/gallium/drivers/radeon/r600_buffer_common.c
@@ -163,22 +163,26 @@ void r600_init_resource_fields(struct r600_common_screen
*rscreen,
!rtex->surface.is_linear) {
res->domains = RADEON_DOMAIN_VRAM;
res->flags &= ~RADEON_FLAG_CPU_ACCESS;
res->flags |= RADEON_FLAG_NO_CPU_ACCESS |
RADEON_FLAG_GTT_WC;
}
/* If VRAM is just stolen system memory, allow both VRAM and
* GTT, whichever has free space. If a buffer is evicted from
* VRAM to GTT, it will stay there.
+ *
+ * DRM 3.6.0 has good BO move throttling, so we can allow VRAM-only
+ * placements even with a low amount of stolen VRAM.
*/
if (!rscreen->info.has_dedicated_vram &&
+ (rscreen->info.drm_major < 3 || rscreen->info.drm_minor < 6) &&
res->domains == RADEON_DOMAIN_VRAM)
res->domains = RADEON_DOMAIN_VRAM_GTT;
if (rscreen->debug_flags & DBG_NO_WC)
res->flags &= ~RADEON_FLAG_GTT_WC;
/* Set expected VRAM and GART usage for the buffer. */
res->vram_usage = 0;
res->gart_usage = 0;
--
2.7.4
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