Mesa (8.0): appleglx: Improve error reporting if CGLChoosePixelFormat() didn't find any matching pixel formats.

[Jeremy Huddleston]

Module: Mesa
Branch: 8.0
Commit: f0702d6e631bb912a230c081463bb51a0dde1bff
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f0702d6e631bb912a230c081463bb51a0dde1bff

Author: Jon TURNEY <jon.turney at dronecode.org.uk>
Date:   Mon May 12 15:38:26 2014 +0100

appleglx: Improve error reporting if CGLChoosePixelFormat() didn't find any matching pixel formats.

Signed-off-by: Jon TURNEY <jon.turney at dronecode.org.uk>
Reviewed-by: Jeremy Huddleston Sequoia <jeremyhu at apple.com>
(cherry picked from commit 002a3a74273b81dfb226e1c3f0a8c18525ed0af4)

---

 src/glx/apple/apple_visual.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/glx/apple/apple_visual.c b/src/glx/apple/apple_visual.c
index 238c248..c6ede51 100644
--- a/src/glx/apple/apple_visual.c
+++ b/src/glx/apple/apple_visual.c
@@ -167,4 +167,9 @@ apple_visual_create_pfobj(CGLPixelFormatObj * pfobj, const struct glx_config * m
       fprintf(stderr, "error: %s\n", apple_cgl.error_string(error));
       abort();
    }
+
+   if (!*pfobj) {
+      fprintf(stderr, "No matching pixelformats found, perhaps try using LIBGL_ALLOW_SOFTWARE\n");
+      abort();
+   }
 }