i915: Align stride and offset per plane
Current code over-aligns the Y-plane dimensions by a factor of two, so
as to make sure alignment requirements are still satisfied when the
subsampled plane stride and height are divided by two. Instead, this
commit changes the approach to align each plane separately after
computing the plane width and height. We stop using
drv_bo_from_format(), which divides the stride and instead loop
through the planes ourselves.
BUG=822346
TEST=test_that graphics_Gbm
Change-Id: I1ea8f2fb8b1780686d4086f51e9bab759f724d78
Reviewed-on: https://chromium-review.googlesource.com/996647
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Kristian H. Kristensen <hoegsberg@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
2 files changed
