st/mesa: implement PBO downloads for ReadPixels

[mesa.git] / src / mesa / state_tracker / st_pbo.h

diff --git a/src/mesa/state_tracker/st_pbo.h b/src/mesa/state_tracker/st_pbo.h
index 14ae6ba23e6341d935d54ebeeda98d972def8fb4..17359c47733433202e7f70b2ed403edad328e28c 100644 (file)
--- a/src/mesa/state_tracker/st_pbo.h
+++ b/src/mesa/state_tracker/st_pbo.h
@@ -70,6 +70,10 @@ st_pbo_addresses_pixelstore(struct st_context *st,
                             const void *pixels,
                             struct st_pbo_addresses *addr);
 
+void
+st_pbo_addresses_invert_y(struct st_pbo_addresses *addr,
+                          unsigned viewport_height);
+
 bool
 st_pbo_draw(struct st_context *st, const struct st_pbo_addresses *addr,
             unsigned surface_width, unsigned surface_height);