Mesa (intel-2008-q3): i965: Fix a potential assertion failure.

[Haihao Xiang]

Module: Mesa
Branch: intel-2008-q3
Commit: c281d3d5caedf75eaa3c877f94656f982aad868d
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=c281d3d5caedf75eaa3c877f94656f982aad868d

Author: Xiang, Haihao <haihao.xiang at intel.com>
Date:   Tue Oct  7 17:27:33 2008 +0800

i965: Fix a potential assertion failure.
(cherry picked from commit d01f9fa778cb0d230c697badaea078f6f37da743)

---

 src/mesa/drivers/dri/i965/brw_draw_upload.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_draw_upload.c b/src/mesa/drivers/dri/i965/brw_draw_upload.c
index f148b10..89b7c2a 100644
--- a/src/mesa/drivers/dri/i965/brw_draw_upload.c
+++ b/src/mesa/drivers/dri/i965/brw_draw_upload.c
@@ -365,8 +365,10 @@ static void brw_prepare_vertices(struct brw_context *brw)
 	 if (i == 0) {
 	    /* Position array not properly enabled:
 	     */
-	    if (input->glarray->StrideB == 0)
-	      return;
+            if (input->glarray->StrideB == 0) {
+               intel->Fallback = 1;
+               return;
+            }
 
 	    interleave = input->glarray->StrideB;
 	    ptr = input->glarray->Ptr;