Mesa (master): i965/blorp: Prepare drawing rectangle for flipped coordinates

[Topi Pohjolainen]

Module: Mesa
Branch: master
Commit: 13670e8bade296c5c5846dc08615563ad51685e4
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=13670e8bade296c5c5846dc08615563ad51685e4

Author: Topi Pohjolainen <topi.pohjolainen at intel.com>
Date:   Sun Mar 29 21:52:02 2015 +0300

i965/blorp: Prepare drawing rectangle for flipped coordinates

Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Signed-off-by: Topi Pohjolainen <topi.pohjolainen at intel.com>

---

 src/mesa/drivers/dri/i965/gen6_blorp.cpp |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/gen6_blorp.cpp b/src/mesa/drivers/dri/i965/gen6_blorp.cpp
index ed08898..b6a3d78 100644
--- a/src/mesa/drivers/dri/i965/gen6_blorp.cpp
+++ b/src/mesa/drivers/dri/i965/gen6_blorp.cpp
@@ -950,8 +950,8 @@ gen6_blorp_emit_drawing_rectangle(struct brw_context *brw,
    BEGIN_BATCH(4);
    OUT_BATCH(_3DSTATE_DRAWING_RECTANGLE << 16 | (4 - 2));
    OUT_BATCH(0);
-   OUT_BATCH(((params->x1 - 1) & 0xffff) |
-             ((params->y1 - 1) << 16));
+   OUT_BATCH(((MAX2(params->x1, params->x0) - 1) & 0xffff) |
+             ((MAX2(params->y1, params->y0) - 1) << 16));
    OUT_BATCH(0);
    ADVANCE_BATCH();
 }