i965: Add a driver hook for binding renderbuffers to textures.

This will let us use meta's acceleration from renderbuffers without having
to do a CopyTexImage first.

This is like what we do for TFP, but just taking an existing renderbuffer
and binding it to a texture with whatever its format was.  The
implementation won't work for stencil renderbuffers, and it only does
non-texture renderbuffers (but then, if you're using a texture
renderbuffer, you can just pull the texture object/level/slice out of the
renderbuffer, anyway).

v2: Don't forget to propagate NumSamples to the teximage.

Reviewed-by: Kenneth Graunke <[email protected]>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index ac317e39950..ccd44948860 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -399,6 +399,13 @@ struct dd_function_table {
    void (*UnmapRenderbuffer)(struct gl_context *ctx,
 			     struct gl_renderbuffer *rb);
 
+   /**
+    * Optional driver entrypoint that binds a non-texture renderbuffer's
+    * contents to a texture image.
+    */
+   GLboolean (*BindRenderbufferTexImage)(struct gl_context *ctx,
+                                         struct gl_renderbuffer *rb,
+                                         struct gl_texture_image *texImage);
    /*@}*/