gallium: Add accessor functions to get textures from a st_framebuffer

2 files changed, 19 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_framebuffer.c b/src/mesa/state_tracker/st_framebuffer.c
index 7e6db467576..1b6e68c2a11 100644
--- a/src/mesa/state_tracker/st_framebuffer.c
+++ b/src/mesa/state_tracker/st_framebuffer.c
@@ -230,6 +230,22 @@ st_get_framebuffer_surface(struct st_framebuffer *stfb, uint surfIndex)
    return NULL;
 }
 
+struct pipe_texture *
+st_get_framebuffer_texture(struct st_framebuffer *stfb, uint surfIndex)
+{
+   struct st_renderbuffer *strb;
+
+   assert(surfIndex <= ST_SURFACE_DEPTH);
+
+   /* 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->texture;
+   return NULL;
+}
 
 /**
  * This function is to be called prior to SwapBuffers on the given
diff --git a/src/mesa/state_tracker/st_public.h b/src/mesa/state_tracker/st_public.h
index b99984215f7..ca4e9577b1b 100644
--- a/src/mesa/state_tracker/st_public.h
+++ b/src/mesa/state_tracker/st_public.h
@@ -74,6 +74,9 @@ void st_set_framebuffer_surface(struct st_framebuffer *stfb,
 struct pipe_surface *st_get_framebuffer_surface(struct st_framebuffer *stfb,
                                                 uint surfIndex);
 
+struct pipe_texture *st_get_framebuffer_texture(struct st_framebuffer *stfb,
+                                                uint surfIndex);
+
 void *st_framebuffer_private( struct st_framebuffer *stfb );
 
 void st_unreference_framebuffer( struct st_framebuffer **stfb );