i915: Don't emit 'empty' blit rectangles.

The hardware seems to interpret them differently and produce unexpected results...
2007-10-17 18:26:31 +02:00 · 2007-10-17 18:26:31 +02:00 · b453112133
parent 87966baa8d
commit b453112133
1 changed files with 3 additions and 0 deletions
--- a/src/mesa/drivers/dri/i915/intel_blit.c
+++ b/src/mesa/drivers/dri/i915/intel_blit.c
@ -402,6 +402,9 @@ intelClearWithBlit(GLcontext * ctx, GLbitfield mask)
            b = *box;
         }

+         if (b.x1 >= b.x2 || b.y1 >= b.y2)
+            continue;
+
         if (0)
            _mesa_printf("clear %d,%d..%d,%d, mask %x\n",
                         b.x1, b.y1, b.x2, b.y2, mask);