diff options
| author | Anuj Phogat <[email protected]> | 2013-07-09 16:09:14 -0700 |
|---|---|---|
| committer | Anuj Phogat <[email protected]> | 2013-07-10 18:41:16 -0700 |
| commit | 9a1a67b081b7f7f4030a5bff7af12bbb70a970ef (patch) | |
| tree | 386f6a1c656f0772eb875858c4b79aadde043974 /src/mesa/drivers | |
| parent | ad244884fc4ac0b6e9c03f20e5a34bb5eb34e60a (diff) | |
i965/blorp: Fix clear rectangle alignment in fast color clear
From BSpec: 3D-Media-GPGPU Engine > 3D Pipeline > Pixel >
Pixel Backend > MCS Buffer for Render Target(s) [DevIVB+]:
[DevHSW:GT3]: Clear rectangle must be aligned to two times
the number of pixels in the table shown below...
Observed no piglit, gles3conform regressions with this patch.
Signed-off-by: Anuj Phogat <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=65744
Diffstat (limited to 'src/mesa/drivers')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_blorp_clear.cpp | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_blorp_clear.cpp b/src/mesa/drivers/dri/i965/brw_blorp_clear.cpp index 4ad7e00729b..6588b7f5c9a 100644 --- a/src/mesa/drivers/dri/i965/brw_blorp_clear.cpp +++ b/src/mesa/drivers/dri/i965/brw_blorp_clear.cpp @@ -260,10 +260,25 @@ brw_blorp_clear_params::brw_blorp_clear_params(struct brw_context *brw, intel_get_non_msrt_mcs_alignment(brw, irb->mt, &x_align, &y_align); x_align *= 16; y_align *= 32; - x0 = ROUND_DOWN_TO(x0, x_align); - y0 = ROUND_DOWN_TO(y0, y_align); - x1 = ALIGN(x1, x_align); - y1 = ALIGN(y1, y_align); + + if (brw->is_haswell && brw->gt == 3) { + /* From BSpec: 3D-Media-GPGPU Engine > 3D Pipeline > Pixel > Pixel + * Backend > MCS Buffer for Render Target(s) [DevIVB+]: + * [DevHSW:GT3]: Clear rectangle must be aligned to two times the + * number of pixels in the table shown below... + * x_align, y_align values computed above are the relevant entries + * in the referred table. + */ + x0 = ROUND_DOWN_TO(x0, 2 * x_align); + y0 = ROUND_DOWN_TO(y0, 2 * y_align); + x1 = ALIGN(x1, 2 * x_align); + y1 = ALIGN(y1, 2 * y_align); + } else { + x0 = ROUND_DOWN_TO(x0, x_align); + y0 = ROUND_DOWN_TO(y0, y_align); + x1 = ALIGN(x1, x_align); + y1 = ALIGN(y1, y_align); + } /* From the Ivy Bridge PRM, Vol2 Part1 11.7 "MCS Buffer for Render * Target(s)", beneath the "Fast Color Clear" bullet (p327): |