Merge remote branch 'origin/master' into gallium_draw_llvm

[mesa.git] / src / mesa / state_tracker / st_cb_flush.c

diff --git a/src/mesa/state_tracker/st_cb_flush.c b/src/mesa/state_tracker/st_cb_flush.c
index 8ceeeabcd37ec18418e0af1c824b6b6967779791..28a384ba49b6450a0117fe7b57113f8a8009ed26 100644 (file)
--- a/src/mesa/state_tracker/st_cb_flush.c
+++ b/src/mesa/state_tracker/st_cb_flush.c
@@ -79,7 +79,7 @@ display_front_buffer(struct st_context *st)
       /* Hook for copying "fake" frontbuffer if necessary:
        */
       st->pipe->screen->flush_frontbuffer( st->pipe->screen, front_surf,
-                                           st->pipe->priv );
+                                           st->winsys_drawable_handle );
 
       /*
         st->frontbuffer_status = FRONT_STATUS_UNDEFINED;
@@ -161,4 +161,16 @@ void st_init_flush_functions(struct dd_function_table *functions)
 {
    functions->Flush = st_glFlush;
    functions->Finish = st_glFinish;
+
+   /* Windows opengl32.dll calls glFinish prior to every swapbuffers.
+    * This is unnecessary and degrades performance.  Luckily we have some
+    * scope to work around this, as the externally-visible behaviour of
+    * Finish() is identical to Flush() in all cases - no differences in
+    * rendering or ReadPixels are visible if we opt not to wait here.
+    *
+    * Only set this up on windows to avoid suprise elsewhere.
+    */
+#ifdef PIPE_OS_WINDOWS
+   functions->Finish = st_glFlush;
+#endif
 }