Hollow Knight Silksong (PPSA12544) imports libSceAgc NID vieBRwlh1Lw
(#699). Its name is unknown: it is not in aerolib, and the
sceAgcUpdateInterpolantMapping label other projects give it hashes to
SbuY2jN+axQ.
OpenAGC (src/game_compat.c at 3c7e807, sceAgcUnknownVieBRwlh1Lw) reads
it from FW 11.60 as the dbOlWdppb4o transform with the same (regs, gs,
ps) arguments, without the identity tail: it writes one register per
pixel shader input, none for a pixel shader without inputs, and rejects
a null pixel shader. It now shares the dbOlWdppb4o path and throws for
the rejected arguments.
For is_f16 1 and 3 inputs whose default_value and default_value_hi
differ, OpenAGC takes DEFAULT_VAL from default_value_hi, while KytyPS5,
sharpemu and dbOlWdppb4o here take it from default_value; these inputs
throw. On every other input the dbOlWdppb4o values equal OpenAGC's.
agc_interpolant_mapping runs the dbOlWdppb4o vectors and OpenAGC's
enhanced-mapping vectors through it.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
PPSA26344 imports libSceAgc NID dbOlWdppb4o, whose name is unknown,
and calls it with the (regs, gs, ps) arguments of
sceAgcCreateInterpolantMapping to fill the 32 SPI_PS_INPUT_CNTL
registers. It is exported as sceAgcUnknownCreateInterpolantMapping.
It differs from sceAgcCreateInterpolantMapping only for inputs that
carry the high f16 half alone (is_f16 2): these take the default bit
and DEFAULT_VAL from the high half, as KytyPS5 does.
Both exports share validation and the register loop. More than 32
pixel shader inputs now throw; before, they were written past the
32-register block. agc_interpolant_mapping covers both exports.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
David
Josip Parlov
boykopovar
Celegans12