Fill the remaining TODO_NAMED bodies in Kernel/Stubs/VU.cpp so the
out-of-line libvu0 macro-mode routines write their documented results to
the caller's output operand instead of leaving guest memory untouched (the
TODO_NAMED stub throws, or returns -1 once its per-name warning budget is
spent, and never writes the destination).
Implements the matrix/geometry/clip/lighting entry points:
CameraMatrix, InversMatrix, MulMatrix, TransMatrix, RotMatrix,
NormalLightMatrix, LightColorMatrix, DropShadowMatrix, ViewScreenMatrix,
RotTransPers/RotTransPersN, ClipScreen/ClipScreen3/ClipAll, MulVector,
ScaleVectorXYZ, DivVector/DivVectorXYZ, InterVector/InterVectorXYZ,
ClampVector, ecossin. Pure input->output arithmetic over guest memory
through the existing getMemPtr/getConstMemPtr and getRegU32/ctx->f[]
accessors already used by the implemented sceVu0 functions in the same
file. No new runtime state, no signature changes, no VU.h changes.
The clip and view/shadow routines provide the functional contract callers
rely on (nonzero => offscreen; projection by formula shape) rather than a
bit-exact reproduction of the COP2 sticky clip-flag register.
Adds ps2xTest/src/ps2_vu_tests.cpp covering each routine against its
documented formula.
Shane Michael Mathews (Personal Account)