tu: Add workaround for D3D11 games accessing UBO out of bounds

Some D3D11 games rely on out-of-bounds indirect UBO loads to return
real values from underlying bound descriptor. This workaround would
prevent us from lowering indirectly accessed UBOs to consts.

Later DXVK would declare dynamically indexed uniforms with upper
size bound, to make the accesses spec compliant. But for now
we need our own workaround.

Known affected games:
- Dark Souls 3
- Sekiro: Shadows Die Twice
- Final Fantasy Type-0 HD
- Ultrakill
- Dishonored 2

DXVK discussions:
- https://github.com/doitsujin/dxvk/issues/405
- https://github.com/doitsujin/dxvk/issues/3861

Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27727>

src/util/00-mesa-defaults.conf

@@ -1327,4 +1327,16 @@ TODO: document the other workarounds.
             <option name="force_gl_vendor" value="Qualcomm"/>
         </application>
     </device>
+
+    <device driver="turnip">
+        <!-- Up to DXVK version 2.3.0 -->
+        <engine engine_name_match="DXVK" engine_versions="0:8400896">
+            <!--
+                See: https://github.com/doitsujin/dxvk/issues/3861
+
+                The shader-defined array size is entirely meaningless in D3D.
+            -->
+            <option name="tu_allow_oob_indirect_ubo_loads" value="true" />
+        </engine>
+    </device>
 </driconf>

src/util/driconf.h

@@ -594,6 +594,10 @@
    DRI_CONF_OPT_B(tu_dont_reserve_descriptor_set, def, \
                   "Don't internally reserve one of the HW descriptor sets for descriptor set dynamic offset support, this frees up an extra descriptor set at the cost of that feature")
 
+#define DRI_CONF_TU_ALLOW_OOB_INDIRECT_UBO_LOADS(def) \
+   DRI_CONF_OPT_B(tu_allow_oob_indirect_ubo_loads, def, \
+                  "Some D3D11 games rely on out-of-bounds indirect UBO loads to return real values from underlying bound descriptor, this prevents us from lowering indirectly accessed UBOs to consts")
+
 /**
  * \brief venus specific configuration options
  */