From: Patrick Rudolph <siro@das-labor.org>
Date: Wed, 23 Sep 2015 14:30:37 +0000 (+0200)
Subject: st/nine: Fix clear for multisample mismatch depth-stencil
X-Git-Tag: upstream/17.1.0~12863
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=924038c08f03e8f55522951a6ae27d9fab42e3a1;p=platform%2Fupstream%2Fmesa.git

st/nine: Fix clear for multisample mismatch depth-stencil

Tests show in case of multisample mismatch between the depth-stencil
buffer and the render target, then it is not cleared.

Fixes failing WINE test visual.c test_multisample_mismatch().

Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Axel Davy <axel.davy@ens.fr>
---

diff --git a/src/gallium/state_trackers/nine/device9.c b/src/gallium/state_trackers/nine/device9.c
index 44c6ebd..9160b16 100644
--- a/src/gallium/state_trackers/nine/device9.c
+++ b/src/gallium/state_trackers/nine/device9.c
@@ -1887,15 +1887,18 @@ NineDevice9_Clear( struct NineDevice9 *This,
         Count = 0;
 #endif
 
+    nine_update_state_framebuffer(This);
+
     if (Flags & D3DCLEAR_TARGET) bufs |= PIPE_CLEAR_COLOR;
-    if (Flags & D3DCLEAR_ZBUFFER) bufs |= PIPE_CLEAR_DEPTH;
-    if (Flags & D3DCLEAR_STENCIL) bufs |= PIPE_CLEAR_STENCIL;
+    /* Ignore Z buffer if not bound */
+    if (This->state.fb.zsbuf != NULL) {
+        if (Flags & D3DCLEAR_ZBUFFER) bufs |= PIPE_CLEAR_DEPTH;
+        if (Flags & D3DCLEAR_STENCIL) bufs |= PIPE_CLEAR_STENCIL;
+    }
     if (!bufs)
         return D3D_OK;
     d3dcolor_to_pipe_color_union(&rgba, Color);
 
-    nine_update_state_framebuffer(This);
-
     rect.x1 = This->state.viewport.X;
     rect.y1 = This->state.viewport.Y;
     rect.x2 = This->state.viewport.Width + rect.x1;
@@ -1938,7 +1941,6 @@ NineDevice9_Clear( struct NineDevice9 *This,
         /* Case we clear depth buffer (and eventually rt too).
          * depth buffer size is always >= rt size. Compare to clear region */
         ((bufs & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL)) &&
-         This->state.fb.zsbuf != NULL &&
          rect.x2 >= zsbuf_surf->desc.Width &&
          rect.y2 >= zsbuf_surf->desc.Height))) {
         DBG("Clear fast path\n");