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i965: Disable guardband clipping on SandyBridge for odd dimensions

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Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104388
Signed-off-by: Andriy Khulap <andriy.khulap@globallogic.com>
Acked-by: Rafael Antognolli <rafael.antognolli@intel.com>
This commit is contained in:
vadym.shovkoplias 2018-05-24 14:16:46 +03:00 • committed by Rafael Antognolli
parent 665fc9cf55
commit 399228ecad
1 changed files with 11 additions and 0 deletions
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11
src/mesa/drivers/dri/i965/genX_state_upload.c
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@ -2508,6 +2508,17 @@ 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);