Mesa (master): r600g: prevent hardware blitting based on resource usage

[Christian König]

Module: Mesa
Branch: master
Commit: a0a22fead5e08b9ebfd2b64e6262e1e803a8e927
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a0a22fead5e08b9ebfd2b64e6262e1e803a8e927

Author: Christian König <deathsimple at vodafone.de>
Date:   Wed Jul 13 16:35:19 2011 +0200

r600g: prevent hardware blitting based on resource usage

It doesn't make much sense for STAGING and STREAM resources to be
hardware blitted into VRAM.

---

 src/gallium/drivers/r600/r600_texture.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_texture.c b/src/gallium/drivers/r600/r600_texture.c
index 37e75be..10c32c5 100644
--- a/src/gallium/drivers/r600/r600_texture.c
+++ b/src/gallium/drivers/r600/r600_texture.c
@@ -313,7 +313,14 @@ static boolean permit_hardware_blit(struct pipe_screen *screen,
                                 PIPE_BIND_SAMPLER_VIEW))
 		return FALSE;
 
-	return TRUE;
+	switch (res->usage) {
+	case PIPE_USAGE_STREAM:
+	case PIPE_USAGE_STAGING:
+		return FALSE;
+
+	default:
+		return TRUE;
+	}
 }
 
 static boolean r600_texture_get_handle(struct pipe_screen* screen,