From d1fa748cdba0b1145066186b3d634b79b5d69473 Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Fri, 11 Dec 2009 11:40:52 -0700
Subject: [PATCH] gallium/util: added util_unreference_framebuffer_state()

---
 src/gallium/auxiliary/util/u_surface.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/gallium/auxiliary/util/u_surface.c b/src/gallium/auxiliary/util/u_surface.c
index daaa275..cfdf7ab 100644
--- a/src/gallium/auxiliary/util/u_surface.c
+++ b/src/gallium/auxiliary/util/u_surface.c
@@ -166,3 +166,19 @@ util_copy_framebuffer_state(struct pipe_framebuffer_state *dst,
 
    pipe_surface_reference(&dst->zsbuf, src->zsbuf);
 }
+
+
+void
+util_unreference_framebuffer_state(struct pipe_framebuffer_state *fb)
+{
+   unsigned i;
+
+   for (i = 0; i < fb->nr_cbufs; i++) {
+      pipe_surface_reference(&fb->cbufs[i], NULL);
+   }
+
+   pipe_surface_reference(&fb->zsbuf, NULL);
+
+   fb->width = fb->height = 0;
+   fb->nr_cbufs = 0;
+}
-- 
2.7.4