llvmpipe: return zero from floor_pot(zero)

2010-09-15 16:28:49 +01:00
parent be2fb11f10
commit 59ca1ae84b
1 changed files with 3 additions and 1 deletions
@@ -447,8 +447,10 @@ do_triangle_ccw(struct lp_setup_context *setup,
 static INLINE uint32_t 
 floor_pot(uint32_t n)
 {
-   assert(n);
 #if defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86)
+   if (n == 0)
+      return 0;
+
   __asm__("bsr %1,%0"
          : "=r" (n)
          : "rm" (n));