Mesa (master): llvmpipe: added max texture/surface size sanity check

[Brian Paul]

Module: Mesa
Branch: master
Commit: 5244ce786a3e115fac1675450c3df8ee11e20030
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5244ce786a3e115fac1675450c3df8ee11e20030

Author: Brian Paul <brianp at vmware.com>
Date:   Wed Sep 23 11:04:57 2009 -0600

llvmpipe: added max texture/surface size sanity check

Carried over from softpipe driver.

---

 src/gallium/drivers/llvmpipe/lp_tile_cache.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/llvmpipe/lp_tile_cache.c b/src/gallium/drivers/llvmpipe/lp_tile_cache.c
index 2e576e6..7346010 100644
--- a/src/gallium/drivers/llvmpipe/lp_tile_cache.c
+++ b/src/gallium/drivers/llvmpipe/lp_tile_cache.c
@@ -48,6 +48,12 @@ struct llvmpipe_tile_cache *
 lp_create_tile_cache( struct pipe_screen *screen )
 {
    struct llvmpipe_tile_cache *tc;
+   int maxLevels, maxTexSize;
+
+   /* sanity checking: max sure MAX_WIDTH/HEIGHT >= largest texture image */
+   maxLevels = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
+   maxTexSize = 1 << (maxLevels - 1);
+   assert(MAX_WIDTH >= maxTexSize);
 
    tc = CALLOC_STRUCT( llvmpipe_tile_cache );
    if(!tc)