From c1a392ac4c6a7da4026653de556c2c7698f86860 Mon Sep 17 00:00:00 2001
From: Chia-I Wu <olv@lunarg.com>
Date: Tue, 30 Mar 2010 09:17:20 +0800
Subject: st/glx: Remove a wrong assertion in choose_pixel_format.

There are X visuals that Gallium or the code does not support.  We could
not assert the color format to be supported.  Return PIPE_FORMAT_NONE in
such cases and let the caller handle it.
---
 src/gallium/state_trackers/glx/xlib/glx_api.c | 4 ++++
 src/gallium/state_trackers/glx/xlib/xm_api.c  | 9 +++++++--
 2 files changed, 11 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/gallium/state_trackers/glx/xlib/glx_api.c b/src/gallium/state_trackers/glx/xlib/glx_api.c
index 4930cd6cd5..eb8d6a1933 100644
--- a/src/gallium/state_trackers/glx/xlib/glx_api.c
+++ b/src/gallium/state_trackers/glx/xlib/glx_api.c
@@ -1758,6 +1758,10 @@ glXGetFBConfigs( Display *dpy, int screen, int *nelements )
       }
       for (i = 0; i < *nelements; i++) {
          results[i] = create_glx_visual(dpy, visuals + i);
+         if (!results[i]) {
+            *nelements = i;
+            break;
+         }
       }
       return (GLXFBConfig *) results;
    }
diff --git a/src/gallium/state_trackers/glx/xlib/xm_api.c b/src/gallium/state_trackers/glx/xlib/xm_api.c
index 3022d45157..fd03d3c46a 100644
--- a/src/gallium/state_trackers/glx/xlib/xm_api.c
+++ b/src/gallium/state_trackers/glx/xlib/xm_api.c
@@ -327,8 +327,7 @@ choose_pixel_format(XMesaVisual v)
       return PIPE_FORMAT_B5G6R5_UNORM;
    }
 
-   assert(0);
-   return 0;
+   return PIPE_FORMAT_NONE;
 }
 
 
@@ -737,6 +736,12 @@ XMesaVisual XMesaCreateVisual( Display *display,
    }
 
    v->stvis.color_format = choose_pixel_format(v);
+   if (v->stvis.color_format == PIPE_FORMAT_NONE) {
+      FREE(v->visinfo);
+      FREE(v);
+      return NULL;
+   }
+
    v->stvis.depth_stencil_format =
       choose_depth_stencil_format(xmdpy, depth_size, stencil_size);
 
-- 
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