Mesa (master): intel: Add some more safety asserts in the blit code.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: b82abaabee3a0d0d8ec3418e8299cad1985a2776
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b82abaabee3a0d0d8ec3418e8299cad1985a2776

Author: Eric Anholt <eric at anholt.net>
Date:   Fri Aug  7 17:06:41 2009 -0700

intel: Add some more safety asserts in the blit code.

---

 src/mesa/drivers/dri/intel/intel_blit.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/intel/intel_blit.c b/src/mesa/drivers/dri/intel/intel_blit.c
index 2e95bd1..979f202 100644
--- a/src/mesa/drivers/dri/intel/intel_blit.c
+++ b/src/mesa/drivers/dri/intel/intel_blit.c
@@ -477,6 +477,8 @@ intelClearWithBlit(GLcontext *ctx, GLbitfield mask)
                   BR13 |= BR13_565;
                }
 
+	       assert(irb->region->tiling != I915_TILING_Y);
+
 #ifndef I915
 	       if (irb->region->tiling != I915_TILING_NONE) {
 		  CMD |= XY_DST_TILED;
@@ -571,6 +573,7 @@ intelEmitImmediateColorExpandBlit(struct intel_context *intel,
 
    assert( logic_op - GL_CLEAR >= 0 );
    assert( logic_op - GL_CLEAR < 0x10 );
+   assert(dst_pitch > 0);
 
    if (w < 0 || h < 0)
       return GL_TRUE;