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-rw-r--r--src/intel/vulkan/genX_cmd_buffer.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/src/intel/vulkan/genX_cmd_buffer.c b/src/intel/vulkan/genX_cmd_buffer.c
index 5b76ac61679..a91cffd8fc7 100644
--- a/src/intel/vulkan/genX_cmd_buffer.c
+++ b/src/intel/vulkan/genX_cmd_buffer.c
@@ -3827,6 +3827,25 @@ genX(flush_pipeline_select)(struct anv_cmd_buffer *cmd_buffer,
anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_CC_STATE_POINTERS), t);
#endif
+#if GEN_GEN == 9
+ if (pipeline == _3D) {
+ /* There is a mid-object preemption workaround which requires you to
+ * re-emit MEDIA_VFE_STATE after switching from GPGPU to 3D. However,
+ * even without preemption, we have issues with geometry flickering when
+ * GPGPU and 3D are back-to-back and this seems to fix it. We don't
+ * really know why.
+ */
+ const uint32_t subslices =
+ MAX2(cmd_buffer->device->instance->physicalDevice.subslice_total, 1);
+ anv_batch_emit(&cmd_buffer->batch, GENX(MEDIA_VFE_STATE), vfe) {
+ vfe.MaximumNumberofThreads =
+ devinfo->max_cs_threads * subslices - 1;
+ vfe.NumberofURBEntries = 2;
+ vfe.URBEntryAllocationSize = 2;
+ }
+ }
+#endif
+
/* From "BXML » GT » MI » vol1a GPU Overview » [Instruction]
* PIPELINE_SELECT [DevBWR+]":
*