Fix loop for quads-as-triangles.

diff --git a/src/mesa/tnl_dd/t_dd_dmatmp.h b/src/mesa/tnl_dd/t_dd_dmatmp.h
index 6549041051320871dae270601be063cbe94de33c..d274ead2c2756c4f3ac3cba2c6241539bcfbae72 100644 (file)
--- a/src/mesa/tnl_dd/t_dd_dmatmp.h
+++ b/src/mesa/tnl_dd/t_dd_dmatmp.h
@@ -623,7 +623,7 @@ static void TAG(render_quads_verts)( GLcontext *ctx,
 
       INIT(GL_TRIANGLES);
 
-      for (j = start; j < count; j += 4) {
+      for (j = start; j < count-3; j += 4) {
         void *tmp = ALLOC_VERTS( 6 );
         /* Send v0, v1, v3
          */
@@ -1236,7 +1236,7 @@ static GLboolean TAG(validate_render)( GLcontext *ctx,
            ok = (GLint) count < GET_SUBSEQUENT_VB_MAX_ELTS();
         }
         else {
-           ok = HAVE_TRIANGLES; /* for gears... */
+           ok = HAVE_TRIANGLES; /* flatshading is ok. */
         }
         break;
       default: