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DRI2: Don't fault on NULL DrawBuffer

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It is possible for ctx->DrawBuffer to be NULL, so don't fault when
that happens.  This change is not being committed to master because it
doesn't appear to be necessary there.

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

Cherry picked from mesa_7_4_branch, commit 49e0c74ddd
This commit is contained in:
Ian Romanick 2009-04-11 14:02:33 -07:00 • committed by Brian Paul
parent cafea75280
commit 153012b29b
1 changed files with 1 additions and 1 deletions
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2
src/mesa/drivers/dri/intel/intel_buffers.c
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@ -321,7 +321,7 @@ intel_draw_buffer(GLcontext * ctx, struct gl_framebuffer *fb)
static void
intelDrawBuffer(GLcontext * ctx, GLenum mode)
{
if (ctx->DrawBuffer->Name == 0) {
if ((ctx->DrawBuffer != NULL) && (ctx->DrawBuffer->Name == 0)) {
struct intel_context *const intel = intel_context(ctx);
intel->is_front_buffer_rendering = (mode == GL_FRONT_LEFT);