svga: fix incorrect round-down arithmetic

Spotted by Roland.  Luckily, this code should never really be hit
since the const buffer size and offset should already be multiples
of 16.  I could probably add more assertions to that effect, but
let's just fix the arithmetic for now.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>

diff --git a/src/gallium/drivers/svga/svga_state_constants.c b/src/gallium/drivers/svga/svga_state_constants.c
index 75592d3..c93d2a5 100644 (file)
--- a/src/gallium/drivers/svga/svga_state_constants.c
+++ b/src/gallium/drivers/svga/svga_state_constants.c
@@ -718,7 +718,7 @@ emit_consts_vgpu10(struct svga_context *svga, unsigned shader)
             /* round down to mulitple of 16 (this may cause rendering problems
              * but should avoid a device error).
              */
-            size &= ~16;
+            size &= ~15;
          }
       }