Otherwise clearing with blorp will regress performance in some
synthetic test cases.
Signed-off-by: Topi Pohjolainen <topi.pohjolai...@intel.com>
---
src/mesa/drivers/dri/i965/gen7_blorp.cpp | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/gen7_blorp.cpp
b/src/mesa/drivers/dri/i965/gen7_blorp.cpp
index b85a6a5..87920c7 100644
--- a/src/mesa/drivers/dri/i965/gen7_blorp.cpp
+++ b/src/mesa/drivers/dri/i965/gen7_blorp.cpp
@@ -31,6 +31,17 @@
#include "brw_blorp.h"
+static bool
+gen7_blorp_skip_urb_config(const struct brw_context *brw)
+{
+ if (brw->ctx.NewDriverState & (BRW_NEW_CONTEXT | BRW_NEW_URB_SIZE))
+ return false;
+
+ /* Vertex state urb size can't be zero, otherwise the setup can be
+ * any valid configuration.
+ */
+ return brw->urb.vsize > 0;
+}
/* 3DSTATE_URB_VS
* 3DSTATE_URB_HS
@@ -59,6 +70,9 @@ gen7_blorp_emit_urb_config(struct brw_context *brw)
const unsigned vs_chunks =
DIV_ROUND_UP(brw->urb.min_vs_entries * vs_size * 64, chunk_size_bytes);
+ if (gen7_blorp_skip_urb_config(brw))
+ return;
+
gen7_emit_push_constant_state(brw,
urb_size / 2 /* vs_size */,
0 /* hs_size */,
--
2.5.5
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