From 9e9644666e9ba226edf22ab652c05fb148643f79 Mon Sep 17 00:00:00 2001
From: Axel Davy <davyaxel0@gmail.com>
Date: Sat, 20 Mar 2021 13:50:45 +0100
Subject: [PATCH] st/nine: Refuse depth buffers as rendertargets
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

If we allow them, some apps try to use them
as rendertargets.

Signed-off-by: Axel Davy <davyaxel0@gmail.com>
Acked-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10160>
---
 src/gallium/frontends/nine/adapter9.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/gallium/frontends/nine/adapter9.c b/src/gallium/frontends/nine/adapter9.c
index 3d339d982f2..85031ef4584 100644
--- a/src/gallium/frontends/nine/adapter9.c
+++ b/src/gallium/frontends/nine/adapter9.c
@@ -328,7 +328,11 @@ NineAdapter9_CheckDeviceFormat( struct NineAdapter9 *This,
     }
 
     bind = 0;
-    if (Usage & D3DUSAGE_RENDERTARGET) bind |= PIPE_BIND_RENDER_TARGET;
+    if (Usage & D3DUSAGE_RENDERTARGET) {
+        if (depth_stencil_format(CheckFormat))
+            return D3DERR_NOTAVAILABLE;
+        bind |= PIPE_BIND_RENDER_TARGET;
+    }
     if (Usage & D3DUSAGE_DEPTHSTENCIL) {
         if (!depth_stencil_format(CheckFormat))
             return D3DERR_NOTAVAILABLE;