From d103d64df6c2b45f917f452c4c29cbb73bebd74c Mon Sep 17 00:00:00 2001
From: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Date: Sun, 6 Feb 2022 10:01:27 -0500
Subject: [PATCH] asahi: Add some notes to XML about mipmapping

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14903>
---
 src/asahi/lib/cmdbuf.xml | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/asahi/lib/cmdbuf.xml b/src/asahi/lib/cmdbuf.xml
index cef075ab3ed..fc86cfce409 100644
--- a/src/asahi/lib/cmdbuf.xml
+++ b/src/asahi/lib/cmdbuf.xml
@@ -168,13 +168,19 @@
     <field name="Unk 52" size="1" start="52" type="bool"/>
     <field name="Rotate 90" size="1" start="53" type="bool" default="false"/>
     <field name="Flip vertical" size="1" start="54" type="bool" default="false"/>
-    <field name="Unk 55" size="9" start="55" type="hex"/>
+    <!-- not 1c0, tried setting . setting 0x20/0x10/0x8 breaks render. not
+    0x4/0x2. 0x1 distorts in a funny way, renders upside-down with jitter
+    around the edges (like it's doing a 2x2 tiling or something).
+
+    When enabling mipmapping, Metal sets 0x8 and sets stride to 0x100009 -->
+    <field name="Unk 55" size="9" start="55" type="hex" default="0x00"/>
     <field name="Buffer" size="36" start="64" type="address" modifier="shr(4)"/>
     <!-- N.b. sRGB is not specified here -->
     <field name="Level" size="4" start="100" type="uint"/>
     <!-- Off by 4? -->
     <field name="Stride" size="24" start="104" type="hex" prefix="AGX_RT_STRIDE">
       <value name="Tiled" value="0x100000"/>
+      <value name="Tiled, mipmapped" value="0x100009"/>
     </field>
   </struct>