It fixes simulator warnings in piglit tests complaining about missing
support for headerless sampler messages for pre-emptable contexts.
Bit 5 in SAMPLER MODE register is newly introduced for ICLLP.
Signed-off-by: Anuj Phogat <anuj.pho...@gmail.com>
---
src/mesa/drivers/dri/i965/brw_defines.h | 4 ++++
src/mesa/drivers/dri/i965/brw_state_upload.c | 11 +++++++++++
2 files changed, 15 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_defines.h
b/src/mesa/drivers/dri/i965/brw_defines.h
index 855f1c7d744..433314115b1 100644
--- a/src/mesa/drivers/dri/i965/brw_defines.h
+++ b/src/mesa/drivers/dri/i965/brw_defines.h
@@ -1673,4 +1673,8 @@ enum brw_pixel_shader_coverage_mask_mode {
# define GLK_SCEC_BARRIER_MODE_3D_HULL (1 << 7)
# define GLK_SCEC_BARRIER_MODE_MASK REG_MASK(1 << 7)
+#define GEN11_SAMPLER_MODE 0xE18C
+# define HEADERLESS_MESSAGE_FOR_PREEMPTABLE_CONTEXTS (1 << 5)
+# define HEADERLESS_MESSAGE_FOR_PREEMPTABLE_CONTEXTS_MASK REG_MASK(1 << 5)
+
#endif
diff --git a/src/mesa/drivers/dri/i965/brw_state_upload.c
b/src/mesa/drivers/dri/i965/brw_state_upload.c
index 757426407c3..5a334b48892 100644
--- a/src/mesa/drivers/dri/i965/brw_state_upload.c
+++ b/src/mesa/drivers/dri/i965/brw_state_upload.c
@@ -63,6 +63,17 @@ brw_upload_initial_gpu_state(struct brw_context *brw)
brw_upload_invariant_state(brw);
+ if (devinfo->gen == 11) {
+ /* The default behavior of bit 5 "Headerless Message for Pre-emptable
+ * Contexts" in SAMPLER MODE register is set to 0, which means
+ * headerless sampler messages are not allowed for pre-emptable
+ * contexts. Set the bit 5 to 1 to allow them.
+ */
+ brw_load_register_imm32(brw, GEN11_SAMPLER_MODE,
+ HEADERLESS_MESSAGE_FOR_PREEMPTABLE_CONTEXTS_MASK
|
+ HEADERLESS_MESSAGE_FOR_PREEMPTABLE_CONTEXTS);
+ }
+
if (devinfo->gen == 10 || devinfo->gen == 11) {
/* From gen10 workaround table in h/w specs:
*
--
2.17.0
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