git update pixman mesa 13 dec 2011

1 files changed, 23 insertions, 0 deletions

diff --git a/mesalib/src/mesa/swrast/s_context.c b/mesalib/src/mesa/swrast/s_context.c
index 924612578..6850a09f3 100644
--- a/mesalib/src/mesa/swrast/s_context.c
+++ b/mesalib/src/mesa/swrast/s_context.c
@@ -36,6 +36,7 @@
 #include "swrast.h"
 #include "s_blend.h"
 #include "s_context.h"
+#include "s_depthstencil.h"
 #include "s_lines.h"
 #include "s_points.h"
 #include "s_span.h"
@@ -545,6 +546,25 @@ _swrast_update_active_attribs(struct gl_context *ctx)
 }
 
 
+/**
+ * Update the depth/stencil renderbuffers, if needed.
+ */
+static void
+_swrast_update_depth_stencil(struct gl_context *ctx)
+{
+   struct gl_framebuffer *drawFb = ctx->DrawBuffer;
+   struct gl_framebuffer *readFb = ctx->ReadBuffer;
+
+   _swrast_update_depth_buffer(ctx, drawFb);
+   _swrast_update_stencil_buffer(ctx, drawFb);
+
+   if (readFb != drawFb) {
+      _swrast_update_depth_buffer(ctx, readFb);
+      _swrast_update_stencil_buffer(ctx, readFb);
+   }
+}
+
+
 void
 _swrast_validate_derived( struct gl_context *ctx )
 {
@@ -589,6 +609,9 @@ _swrast_validate_derived( struct gl_context *ctx )
                               _NEW_TEXTURE))
          _swrast_update_specular_vertex_add(ctx);
 
+      if (swrast->NewState & _NEW_BUFFERS)
+         _swrast_update_depth_stencil(ctx);
+
       swrast->NewState = 0;
       swrast->StateChanges = 0;
       swrast->InvalidateState = _swrast_invalidate_state;