d3d12: Fix HEVC chroma_format_idc, separate_colour_plane_flag and conf_win_*_offset for HEVC 444 (!31361) · Merge requests · Mesa / mesa · GitLab

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Sil Vilerino requested to merge sivileri/mesa:d3d12_fix_hevc444_headers into main Sep 25, 2024

Fixes the bitstream header coding for HEVC 444, specifically:

chroma_format_idc should be 3 instead of 1 (which is for 420)
separate_colour_plane_flag needs to be coded when chroma_format_idc is 3
conf_win_*_offset values come premultiplied by 2 for 420 profiles, but not for 444 profiles.

cc @jenatali @pohhsu