hk: fake min/max filtering for proton

this gets us to fl12_0.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33682>

src/util/00-mesa-defaults.conf

@@ -1489,5 +1489,14 @@ TODO: document the other workarounds.
         <application name="Control (DX11)" executable="Control_DX11.exe">
             <option name="hk_disable_border_emulation" value="true" />
         </application>
+        <engine engine_name_match="DXVK|vkd3d">
+            <!--
+               Apple hardware lacks min/max filtering, but this is required for
+               FL12_0. Fortunately, this is an obscure feature and we support
+               the rest of FL12_0, so we prefer to fake support and fail D3D
+               conformance rather than be limited to FL11.
+               -->
+            <option name="hk_fake_minmax" value="true" />
+        </engine>
     </device>
 </driconf>

src/util/driconf.h

@@ -641,6 +641,10 @@
    DRI_CONF_OPT_B(hk_disable_rgba4_border_color_workaround, def, \
                   "Use hardware opaque_black, breaking certain RGBA4 formats")
 
+#define DRI_CONF_HK_FAKE_MINMAX(def) \
+   DRI_CONF_OPT_B(hk_fake_minmax, def, \
+                  "Fake support for min/max filtering")
+
 /**
  * \brief venus specific configuration options
  */