Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104388
Signed-off-by: Andriy Khulap <andriy.khu...@globallogic.com>
---
src/mesa/drivers/dri/i965/genX_state_upload.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/genX_state_upload.c
b/src/mesa/drivers/dri/i965/genX_state_upload.c
index b485e2c..5aa8033 100644
--- a/src/mesa/drivers/dri/i965/genX_state_upload.c
+++ b/src/mesa/drivers/dri/i965/genX_state_upload.c
@@ -2473,6 +2473,17 @@ brw_calculate_guardband_size(uint32_t fb_width, uint32_t
fb_height,
*/
const float gb_size = GEN_GEN >= 7 ? 16384.0f : 8192.0f;
+ /* Workaround: prevent gpu hangs on SandyBridge
+ * by disabling guardband clipping for odd dimensions.
+ */
+ if (GEN_GEN == 6 && (fb_width & 1 || fb_height & 1)) {
+ *xmin = -1.0f;
+ *xmax = 1.0f;
+ *ymin = -1.0f;
+ *ymax = 1.0f;
+ return;
+ }
+
if (m00 != 0 && m11 != 0) {
/* First, we compute the screen-space render area */
const float ss_ra_xmin = MIN3( 0, m30 + m00, m30 - m00);
--
2.7.4
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