Mesa (master): r600g: early exit in r600_clear if there's nothing to do

[Marek Olšák]

Module: Mesa
Branch: master
Commit: 64d3130994bde98b0be44a5c54511e376b6d994e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=64d3130994bde98b0be44a5c54511e376b6d994e

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Tue Jul 28 11:39:35 2015 +0200

r600g: early exit in r600_clear if there's nothing to do

Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>

---

 src/gallium/drivers/r600/r600_blit.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/gallium/drivers/r600/r600_blit.c b/src/gallium/drivers/r600/r600_blit.c
index 8e553a8..1c59230 100644
--- a/src/gallium/drivers/r600/r600_blit.c
+++ b/src/gallium/drivers/r600/r600_blit.c
@@ -401,6 +401,8 @@ static void r600_clear(struct pipe_context *ctx, unsigned buffers,
 	    rctx->framebuffer.nr_samples > 1) {
 		evergreen_do_fast_color_clear(&rctx->b, fb, &rctx->framebuffer.atom,
 					      &buffers, color);
+		if (!buffers)
+			return; /* all buffers have been fast cleared */
 	}
 
 	if (buffers & PIPE_CLEAR_COLOR) {