Mesa (master): svga: Clamp max cube texture levels to supported max 2d levels.

[Jose Fonseca]

Module: Mesa
Branch: master
Commit: 6af833add2a695922400d3f641e3c7fa09c00a46
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=6af833add2a695922400d3f641e3c7fa09c00a46

Author: José Fonseca <jfonseca at vmware.com>
Date:   Fri Feb 12 21:30:33 2010 +0000

svga: Clamp max cube texture levels to supported max 2d levels.

---

 src/gallium/drivers/svga/svga_screen.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/src/gallium/drivers/svga/svga_screen.c b/src/gallium/drivers/svga/svga_screen.c
index cad9b77..414ac52 100644
--- a/src/gallium/drivers/svga/svga_screen.c
+++ b/src/gallium/drivers/svga/svga_screen.c
@@ -156,7 +156,12 @@ svga_get_paramf(struct pipe_screen *screen, int param)
       return MIN2(util_logbase2(result.u) + 1, SVGA_MAX_TEXTURE_LEVELS);
 
    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
-      return 12 /* 2048x2048 */;
+      /*
+       * No mechanism to query the host, and at least limited to 2048x2048 on
+       * certain hardware.
+       */
+      return MIN2(screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
+                  12.0 /* 2048x2048 */);
 
    case PIPE_CAP_TEXTURE_MIRROR_REPEAT: /* req. for GL 1.4 */
       return 1;