Mesa (master): anv: disable repacking for compression for applicable gen

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Module: Mesa
Branch: master
Commit: f734e2a042e3cee94fb8200e8baf34a81c5de46e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f734e2a042e3cee94fb8200e8baf34a81c5de46e

Author: Dongwon Kim <dongwon.kim at intel.com>
Date:   Thu Jun 27 09:54:37 2019 -0700

anv: disable repacking for compression for applicable gen

set bit15 (Disable Repacking for Compression) of CACHE_MODE_0 register
if the gen attribute, 'disable_ccs_repack' is set.

Signed-off-by: Dongwon Kim <dongwon.kim at intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat at gmail.com>

---

 src/intel/vulkan/genX_state.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/intel/vulkan/genX_state.c b/src/intel/vulkan/genX_state.c
index c81de9156c7..496c63afa67 100644
--- a/src/intel/vulkan/genX_state.c
+++ b/src/intel/vulkan/genX_state.c
@@ -213,6 +213,24 @@ genX(init_device_state)(struct anv_device *device)
    }
 #endif
 
+#if GEN_GEN >= 11
+   /* hardware specification recommends disabling repacking for
+    * the compatibility with decompression mechanism in display controller.
+    */
+   if (device->info.disable_ccs_repack) {
+      uint32_t cache_mode_0;
+      anv_pack_struct(&cache_mode_0,
+                      GENX(CACHE_MODE_0),
+                      .DisableRepackingforCompression = true,
+                      .DisableRepackingforCompressionMask = true);
+
+      anv_batch_emit(&batch, GENX(MI_LOAD_REGISTER_IMM), lri) {
+         lri.RegisterOffset = GENX(CACHE_MODE_0_num);
+         lri.DataDWord      = cache_mode_0;
+      }
+   }
+#endif
+
    /* Set the "CONSTANT_BUFFER Address Offset Disable" bit, so
     * 3DSTATE_CONSTANT_XS buffer 0 is an absolute address.
     *