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ail: add enums/queries for AGX compression modes

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r/e'd black box by trying stuff and seeing what dEQP tests pass (:

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30981>
This commit is contained in:
Alyssa Rosenzweig
2024-08-22 17:59:49 -04:00
committed by Marge Bot
parent 942dd5aa66
commit b4b4c1908c
1 changed files with 47 additions and 0 deletions
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47
src/asahi/layout/layout.h
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@@ -365,6 +365,53 @@ ail_can_compress(enum pipe_format format, unsigned w_px, unsigned h_px,
ail_effective_height_sa(h_px, sample_count_sa) >= 16;
}
/* AGX compression mode for a solid colour for the subtile */
#define AIL_COMP_SOLID 0x3
/* AGX compression mode for an uncompessed subtile. Frustratingly, this seems to
* depend on the format. It is possible that modes are actual 8-bit structures
* with multiple fields rather than plain enumerations.
*/
#define AIL_COMP_UNCOMPRESSED_1 0x1f
#define AIL_COMP_UNCOMPRESSED_2 0x3f
#define AIL_COMP_UNCOMPRESSED_4 0x7f
#define AIL_COMP_UNCOMPRESSED_8_16 0xff
static inline uint8_t
ail_subtile_uncompressed_mode(enum pipe_format format)
{
/* clang-format off */
switch (util_format_get_blocksize(format)) {
case 1: return AIL_COMP_UNCOMPRESSED_1;
case 2: return AIL_COMP_UNCOMPRESSED_2;
case 4: return AIL_COMP_UNCOMPRESSED_4;
case 8:
case 16: return AIL_COMP_UNCOMPRESSED_8_16;
default: unreachable("invalid block size");
}
/* clang-format on */
}
/*
* Compression modes are 8-bit per 8x4 subtile, but grouped into 64-bit for all
* modes in a 16x16 tile. This helper replicates a subtile mode to a tile mode
* using a SWAR idiom.
*/
static inline uint64_t
ail_tile_mode_replicated(uint8_t subtile_mode)
{
return (uint64_t)subtile_mode * 0x0101010101010101ULL;
}
/*
* Composed convenience function.
*/
static inline uint64_t
ail_tile_mode_uncompressed(enum pipe_format format)
{
return ail_tile_mode_replicated(ail_subtile_uncompressed_mode(format));
}
#ifdef __cplusplus
} /* extern C */
#endif