r300g: implement fast color clear

An initial implementation made by Dave Airlie.

For it to be used, a color-only clear must be invoked and exactly one
point-sampled render target must be set. The render target must be
macrotiled (for us to overcome alignment issues) and bpp must be either
16 or 32.

I can't see a difference in performance. :(

Conflicts:

	src/gallium/drivers/r300/r300_blit.c

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gallium/drivers/r300/r300_flush.c b/src/gallium/drivers/r300/r300_flush.c
index 2ebf1c8..6f31ba1 100644
--- a/src/gallium/drivers/r300/r300_flush.c
+++ b/src/gallium/drivers/r300/r300_flush.c
@@ -48,6 +48,7 @@ static void r300_flush(struct pipe_context* pipe,
     }
 
     if (r300->dirty_hw) {
+        r300_emit_hyperz_end(r300);
         r300_emit_query_end(r300);
 
         r300->flush_counter++;