From: Icecream95 <ixn@keemail.me>
Date: Wed, 8 Jul 2020 04:00:51 +0000 (+1200)
Subject: pan/mdg: Set the z/s store intrinsic base correctly
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=18059f48f845c3f1358a36528b17bbe90bf140af;p=mesa.git

pan/mdg: Set the z/s store intrinsic base correctly

When EXT_shader_framebuffer_fetch is used and only depth and/or
stencil are written, we can't rely on the first output being to
depth/stencil.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5755>
---

diff --git a/src/panfrost/midgard/midgard_compile.c b/src/panfrost/midgard/midgard_compile.c
index dc878c65f44..dec1f38e094 100644
--- a/src/panfrost/midgard/midgard_compile.c
+++ b/src/panfrost/midgard/midgard_compile.c
@@ -401,7 +401,12 @@ midgard_nir_lower_zs_store(nir_shader *nir)
 
                         combined_store->num_components = 4;
 
-                        nir_intrinsic_set_base(combined_store, 0);
+                        unsigned base;
+                        if (z_store)
+                                base = nir_intrinsic_base(z_store);
+                        else
+                                base = nir_intrinsic_base(s_store);
+                        nir_intrinsic_set_base(combined_store, base);
 
                         unsigned writeout = 0;
                         if (z_store)