Mesa (master): r300g: disable ARB_texture_swizzle if S3TC is enabled on r3xx-only

[Marek Olšák]

Module: Mesa
Branch: master
Commit: fcf6b353bfd860aa7bcc708858bef313c6fd7031
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=fcf6b353bfd860aa7bcc708858bef313c6fd7031

Author: Marek Olšák <maraeo at gmail.com>
Date:   Wed Dec  1 22:49:02 2010 +0100

r300g: disable ARB_texture_swizzle if S3TC is enabled on r3xx-only

r3xx cannot swizzle compressed textures. r4xx+ is unaffected.

NOTE: This is a candidate for the 7.9 branch.

---

 src/gallium/drivers/r300/r300_screen.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c
index 85de60d..09981cb 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -116,8 +116,9 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
-        case PIPE_CAP_TEXTURE_SWIZZLE:
             return 1;
+        case PIPE_CAP_TEXTURE_SWIZZLE:
+            return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 
         /* Unsupported features (boolean caps). */
         case PIPE_CAP_TIMER_QUERY: