PSMTXROMultVecArray

C Specification

#include <revolution/mtx.h>

void PSMTXROMultVecArray ( const ROMtx m, const VecPtr srcBase, VecPtr dstBase, u32 count );

Arguments

`m`	Source matrix for multiply. `m` is unaffected by this function. `m` may be either a `ROMtx` or a `ROMtxPtr`.
`srcBase`	Pointer to first `Vec` of source vector array. `srcBase` may be either a `VecPtr` or a `Point3dPtr`.
`dstBase`	Pointer to first `Vec` of destination vector array. `dstBase` may be either a `VecPtr` or a `Point3dPtr`.
`count`	Number of contiguous array elements to multiply. Must be larger than 1. Acceptable if srcBase=dstBase.

Return Values

None.

Description

PSMTXMultVecArray has been implemented as a high-performance function by using a matrix with columns and rows interchanged (column-major matrix). If count=70, the performance is approximately 9.586 to 9.814 cycles/vertex.

The input matrix must already be put in column-major format using PSMTXReorder.

Note: The count must be greater than two.

Revision History

2006/03/01 Initial version.