Mesa (master): r600g: introduce a per-driver resource flag for transfers.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: 92ed84d11560e226c87bf2758b1503e3075b3f82
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=92ed84d11560e226c87bf2758b1503e3075b3f82

Author: Dave Airlie <airlied at redhat.com>
Date:   Thu Oct 21 13:36:01 2010 +1000

r600g: introduce a per-driver resource flag for transfers.

this is to be used to decide not to tile a surface being used for transfers.

---

 src/gallium/drivers/r600/r600_resource.h |    3 +++
 src/gallium/drivers/r600/r600_texture.c  |    4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_resource.h b/src/gallium/drivers/r600/r600_resource.h
index 5d9fe8c..d152285 100644
--- a/src/gallium/drivers/r600/r600_resource.h
+++ b/src/gallium/drivers/r600/r600_resource.h
@@ -25,6 +25,9 @@
 
 #include "util/u_transfer.h"
 
+/* flag to indicate a resource is to be used as a transfer so should not be tiled */
+#define R600_RESOURCE_FLAG_TRANSFER     PIPE_RESOURCE_FLAG_DRV_PRIV
+
 /* Texture transfer. */
 struct r600_transfer {
 	/* Base class. */
diff --git a/src/gallium/drivers/r600/r600_texture.c b/src/gallium/drivers/r600/r600_texture.c
index c765c0c..b0e5cda 100644
--- a/src/gallium/drivers/r600/r600_texture.c
+++ b/src/gallium/drivers/r600/r600_texture.c
@@ -361,7 +361,7 @@ int r600_texture_depth_flush(struct pipe_context *ctx,
 	resource.nr_samples = 0;
 	resource.usage = PIPE_USAGE_DYNAMIC;
 	resource.bind = 0;
-	resource.flags = 0;
+	resource.flags = R600_RESOURCE_FLAG_TRANSFER;
 
 	resource.bind |= PIPE_BIND_DEPTH_STENCIL;
 
@@ -412,7 +412,7 @@ struct pipe_transfer* r600_texture_get_transfer(struct pipe_context *ctx,
 		resource.nr_samples = 0;
 		resource.usage = PIPE_USAGE_DYNAMIC;
 		resource.bind = 0;
-		resource.flags = 0;
+		resource.flags = R600_RESOURCE_FLAG_TRANSFER;
 		/* For texture reading, the temporary (detiled) texture is used as
 		 * a render target when blitting from a tiled texture. */
 		if (usage & PIPE_TRANSFER_READ) {