PSMTXROMultVecArray

Syntax

#include <revolution/mtx.h>

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

Arguments

m	Source matrix to multiply. `m` is unaffected by this function. `m` may be either a `ROMtx` or a `ROMtxPtr`.
srcBase	Pointer to the first `Vec` of a source vector array. `srcBase` may be either a `VecPtr` or a `Point3dPtr`.
dstBase	Pointer to the first `Vec` of a 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. OK if srcBase = dstBase.

Return Values

None.

Description

PSMTXMultVecArray has been implemented as a high-performance function by using a column-major matrix with columns switched for rows. 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.

count must be greater than two.

Revision History

2006/03/01 Initial version.