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panfrost: Implement YTR availability check

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Depends on format.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Tested-by: Icecream95 <ixn@keemail.me>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6159>
This commit is contained in:
Alyssa Rosenzweig 2020-07-22 11:07:03 -04:00
parent acb8dcfebd
commit d285ea6467
2 changed files with 19 additions and 0 deletions
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16
src/panfrost/lib/pan_afbc.c
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@ -128,3 +128,19 @@ panfrost_afbc_header_size(unsigned width, unsigned height)
return ALIGN_POT(header_bytes, AFBC_CACHE_ALIGN);
}
/* The lossless colour transform (AFBC_FORMAT_MOD_YTR) requires RGB. */
bool
panfrost_afbc_can_ytr(enum pipe_format format)
{
const struct util_format_description *desc =
util_format_description(format);
/* YTR is only defined for RGB(A) */
if (desc->nr_channels != 3 && desc->nr_channels != 4)
return false;
/* The fourth channel if it exists doesn't matter */
return desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB;
}

3
src/panfrost/lib/pan_texture.h
View file

@ -85,6 +85,9 @@ panfrost_format_supports_afbc(enum pipe_format format);
unsigned
panfrost_afbc_header_size(unsigned width, unsigned height);
bool
panfrost_afbc_can_ytr(enum pipe_format format);
/* mali_texture_descriptor */
unsigned