shz_mat4x4_init_permutation_yzwx

SHZ_INLINE void shz_mat4x4_init_permutation_yzwx(shz_mat4x4_t* mat) SHZ_NOEXCEPT;

Initializes the matrix to to a permutation matrix, which reorders the components of transformed vectors to be in YZWX order.

Parameters

Name	Type	Description
mat	shz_mat4x4_t *

Returns

Nothing (void).

Warnings

• This routine clobbers XMTRX.

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)
• shz_mat4x4_t and shz_mat2x2_t arguments must be 8-byte aligned. Unaligned data goes through the float[16] parameters of the _unaligned routines.

Availability

• C++ equivalent: shz::mat4x4::init_permutation_yzwx
• Type-generic form: none
• Back-ends: SH4: shared C implementation · SW: portable C · SPU: shared C implementation
• Defined in: sh4zam/shz_matrix.h:250
• Module: Matrix, section "Initialization"