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util/format: Add RGB lowering for single plane YUV formats
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This fixes a regression with Y8_400 format, which needs to return
R8 as plane format.

Fixes: 5e01ec4bd0 ("util/format: Auto-generate a bunch of YUV helpers")
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37056>
This commit is contained in:
David Rosca 2025-09-03 12:50:43 +02:00 • committed by Marge Bot
parent cb1c059138
commit ac896c0327
1 changed files with 13 additions and 2 deletions
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15
src/util/format/u_format_table.py
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@ -431,16 +431,27 @@ def write_get_plane_format(formats):
'X4B12X4R12': 'X4R12X4G12',
}
# On some YUV formats, we don't want RGB lowering
no_rgb_lowering = ['Y8_UNORM']
print('static inline enum pipe_format', file=sys.stdout3)
print('util_format_get_plane_format(enum pipe_format format, unsigned plane)', file=sys.stdout3)
print('{', file=sys.stdout3)
print(' switch (format) {', file=sys.stdout3)
unhandled_formats = []
for f in formats:
if f.layout not in ['planar2', 'planar3']:
if f.layout not in ['planar2', 'planar3'] and f.colorspace != 'YUV':
continue
nplanes = 3 if f.layout == 'planar3' else 2
if f.short_name().upper() in no_rgb_lowering:
unhandled_formats += [f.name]
continue
nplanes = int(f.layout[-1]) if f.layout.startswith('planar') else 1
planes = f.short_name().upper().split('_')
if planes[-1] == 'PACKED':
planes.pop(-1)
assert(planes[-1] == 'UNORM')
planes.pop(-1)
if planes[-1] in CHROMA_SUBSAMP: