From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Date: Sun, 12 Jun 2022 23:59:05 +0300
Subject: [PATCH] anv: force MEDIA_INTERFACE_DESCRIPTOR_LOAD reemit after
 3D->GPGPU switch

Seems to fix a hang in Age of Empire 4 where the HW is hung on a
PIPE_CONTROL after a GPGPU_WALKER but no
MEDIA_INTERFACE_DESCRIPTOR_LOAD was emitted since the switch from 3D
to GPGPU.

This would happen in the following case :

   vkCmdBindPipeline(COMPUTE, cs_pipeline);
   vkCmdDispatch(...);
   vkCmdBindPipeline(GRAPHICS, gfx_pipeline);
   vkCmdDraw(...);
   vkCmdDispatch(...);

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
---
 src/intel/vulkan/genX_cmd_buffer.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/intel/vulkan/genX_cmd_buffer.c b/src/intel/vulkan/genX_cmd_buffer.c
index 1aa997f2ade2..2e9979c8f63e 100644
--- a/src/intel/vulkan/genX_cmd_buffer.c
+++ b/src/intel/vulkan/genX_cmd_buffer.c
@@ -5955,6 +5955,11 @@ genX(flush_pipeline_select)(struct anv_cmd_buffer *cmd_buffer,
    }
 #endif
 
+#if GFX_VERx10 == 120
+   if (pipeline == _3D)
+      cmd_buffer->state.compute.pipeline_dirty = true;
+#endif
+
    /* From "BXML » GT » MI » vol1a GPU Overview » [Instruction]
     * PIPELINE_SELECT [DevBWR+]":
     *
