Mesa (master): Test either GL_FRONT_LEFT or GL_FRONT for front-buffer rendering

[Ian Romanick]

Module: Mesa
Branch: master
Commit: 2085cf24628be7cd297ab0f9ef5ce02bd5a006e2
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2085cf24628be7cd297ab0f9ef5ce02bd5a006e2

Author: Ian Romanick <ian.d.romanick at intel.com>
Date:   Tue Apr 28 10:08:57 2009 -0700

Test either GL_FRONT_LEFT or GL_FRONT for front-buffer rendering

For non-stereo visuals, which is all we support, we treat
GL_FRONT_LEFT as GL_FRONT.  However, they are technically different,
and they have different enum values.  Test for either one to determine
if we're in front-buffer rendering mode.

This fix was suggested by Pierre Willenbrock.

Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>

---

 src/mesa/drivers/dri/intel/intel_buffers.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/src/mesa/drivers/dri/intel/intel_buffers.c b/src/mesa/drivers/dri/intel/intel_buffers.c
index ecac5bf..b86cafe 100644
--- a/src/mesa/drivers/dri/intel/intel_buffers.c
+++ b/src/mesa/drivers/dri/intel/intel_buffers.c
@@ -326,7 +326,8 @@ intelDrawBuffer(GLcontext * ctx, GLenum mode)
       const GLboolean was_front_buffer_rendering =
 	intel->is_front_buffer_rendering;
 
-      intel->is_front_buffer_rendering = (mode == GL_FRONT_LEFT);
+      intel->is_front_buffer_rendering = (mode == GL_FRONT_LEFT)
+	|| (mode == GL_FRONT);
 
       /* If we weren't front-buffer rendering before but we are now, make sure
        * that the front-buffer has actually been allocated.