shz_xmtrx_apply_permutation_wzyx

SHZ_INLINE void shz_xmtrx_apply_permutation_wzyx(void) SHZ_NOEXCEPT;

Multiplies and accumulates a permutation matrix, which reorders the components of transformed vectors to be in WZYX order.

Parameters

Name	Type	Description
``	void

Returns

Nothing (void).

Naming and requirements

• _wxyz: Register/column permutation so that FTRV yields W first (cycle 4 instead of 7), which helps perspective division. (Naming and Suffixes)

Availability

• C++ equivalent: shz::xmtrx::apply_permutation_wzyx
• Type-generic form: none
• Back-ends: SH4: dedicated SH4 implementation · SW: portable C · SPU: shared C implementation
• Defined in: sh4zam/shz_xmtrx.h:555
• Module: XMTRX, section "Apply Operation"