Mesa (master): mesa: fix/add error check in _mesa_ColorMaterial()

[Brian Paul]

Module: Mesa
Branch: master
Commit: f2724905469bbcde820b9ece2e4f44a610a75a65
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f2724905469bbcde820b9ece2e4f44a610a75a65

Author: Brian Paul <brianp at vmware.com>
Date:   Tue May  8 10:22:20 2012 -0600

mesa: fix/add error check in _mesa_ColorMaterial()

_mesa_material_bitmask() will record a GL error and return 0 if
face or mode are illegal.  Return early in that case.

NOTE: This is a candidate for the 8.0 branch.

---

 src/mesa/main/light.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/src/mesa/main/light.c b/src/mesa/main/light.c
index 7bc22e2..38ec1b6 100644
--- a/src/mesa/main/light.c
+++ b/src/mesa/main/light.c
@@ -728,6 +728,8 @@ _mesa_ColorMaterial( GLenum face, GLenum mode )
                   _mesa_lookup_enum_by_nr(mode));
 
    bitmask = _mesa_material_bitmask(ctx, face, mode, legal, "glColorMaterial");
+   if (bitmask == 0)
+      return; /* error was recorded */
 
    if (ctx->Light.ColorMaterialBitmask == bitmask &&
        ctx->Light.ColorMaterialFace == face &&