Mesa (master): r600g: don' t call debug_get_bool_option for tiling more than once

[Keith Whitwell]

Module: Mesa
Branch: master
Commit: ee07e0e39ad1c4d13d540b23220fecc564d07b16
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ee07e0e39ad1c4d13d540b23220fecc564d07b16

Author: Keith Whitwell <keithw at vmware.com>
Date:   Wed Nov  3 10:31:55 2010 +0000

r600g: don't call debug_get_bool_option for tiling more than once

---

 src/gallium/drivers/r600/r600_texture.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_texture.c b/src/gallium/drivers/r600/r600_texture.c
index c92f634..a63990f 100644
--- a/src/gallium/drivers/r600/r600_texture.c
+++ b/src/gallium/drivers/r600/r600_texture.c
@@ -306,8 +306,14 @@ struct pipe_resource *r600_texture_create(struct pipe_screen *screen,
 						const struct pipe_resource *templ)
 {
 	unsigned array_mode = 0;
+        static int force_tiling = -1;
 
-	if (debug_get_bool_option("R600_FORCE_TILING", FALSE)) {
+        /* Would like some magic "get_bool_option_once" routine.
+	 */
+	if (force_tiling == -1)
+                force_tiling = debug_get_bool_option("R600_FORCE_TILING", FALSE);
+
+	if (force_tiling) {
 		if (!(templ->flags & R600_RESOURCE_FLAG_TRANSFER) &&
 		    !(templ->bind & PIPE_BIND_SCANOUT)) {
 			array_mode = V_038000_ARRAY_2D_TILED_THIN1;