Mesa (gallium-0.2): gallium: fix a fbo crash

[Zack Rusin]

Module: Mesa
Branch: gallium-0.2
Commit: 90f1677fe6b6a016d38e89d1ebb23ce255f17b74
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=90f1677fe6b6a016d38e89d1ebb23ce255f17b74

Author: Zack Rusin <zack at tungstengraphics.com>
Date:   Sun Sep 21 00:20:38 2008 -0400

gallium: fix a fbo crash

don't dirty the fb if we're rebining the frontbuffer

---

 src/mesa/state_tracker/st_atom_framebuffer.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/src/mesa/state_tracker/st_atom_framebuffer.c b/src/mesa/state_tracker/st_atom_framebuffer.c
index d07fd25..c07ed29 100644
--- a/src/mesa/state_tracker/st_atom_framebuffer.c
+++ b/src/mesa/state_tracker/st_atom_framebuffer.c
@@ -156,7 +156,9 @@ update_framebuffer_state( struct st_context *st )
 #if !defined(PIPE_OS_WINDOWS)
 #warning "fix me"
 #endif
-   st->frontbuffer_status = FRONT_STATUS_DIRTY;
+   if (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT) {
+      st->frontbuffer_status = FRONT_STATUS_DIRTY;
+   }
 #endif
 }