From: Brian <brian.paul@tungstengraphics.com>
Date: Mon, 5 Nov 2007 16:52:14 +0000 (-0700)
Subject: added st_get_framebuffer_surface() and ST_SURFACE_x tokens
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=616bf3556939d94852b1dfe73f92ef94b10782c4;p=mesa.git

added st_get_framebuffer_surface() and ST_SURFACE_x tokens
---

diff --git a/src/mesa/state_tracker/st_framebuffer.c b/src/mesa/state_tracker/st_framebuffer.c
index 54ae175e60e..326773c505e 100644
--- a/src/mesa/state_tracker/st_framebuffer.c
+++ b/src/mesa/state_tracker/st_framebuffer.c
@@ -112,3 +112,23 @@ void st_unreference_framebuffer( struct st_framebuffer **stfb )
 }
 
 
+
+/**
+ * Return the pipe_surface for the given renderbuffer.
+ */
+struct pipe_surface *
+st_get_framebuffer_surface(struct st_framebuffer *stfb, uint surfIndex)
+{
+   struct st_renderbuffer *strb;
+
+   assert(surfIndex <= ST_SURFACE_BACK_RIGHT);
+
+   /* sanity checks, ST tokens should match Mesa tokens */
+   assert(ST_SURFACE_FRONT_LEFT == BUFFER_FRONT_LEFT);
+   assert(ST_SURFACE_BACK_RIGHT == BUFFER_BACK_RIGHT);
+
+   strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
+   if (strb)
+      return strb->surface;
+   return NULL;
+}
diff --git a/src/mesa/state_tracker/st_public.h b/src/mesa/state_tracker/st_public.h
index 93239e66d63..acbf54d5ab3 100644
--- a/src/mesa/state_tracker/st_public.h
+++ b/src/mesa/state_tracker/st_public.h
@@ -30,6 +30,13 @@
 
 #include "mtypes.h"
 
+
+#define ST_SURFACE_FRONT_LEFT   0
+#define ST_SURFACE_BACK_LEFT    1
+#define ST_SURFACE_FRONT_RIGHT  2
+#define ST_SURFACE_BACK_RIGHT   3
+
+
 struct st_context;
 struct st_framebuffer;
 
@@ -51,6 +58,9 @@ struct st_framebuffer *st_create_framebuffer( const __GLcontextModes *visual );
 void st_resize_framebuffer( struct st_framebuffer *stfb,
                             GLuint width, GLuint height );
 
+struct pipe_surface *st_get_framebuffer_surface(struct st_framebuffer *stfb,
+                                                uint surfIndex);
+
 void st_unreference_framebuffer( struct st_framebuffer **stfb );
 
 void st_make_current(struct st_context *st,