Function HMM_LinearCombineV4M4

HandmadeMath.h:1076–1109

COVERAGE(HMM_LinearCombineV4M4, 1)
static inline HMM_Vec4 HMM_LinearCombineV4M4(HMM_Vec4 Left, HMM_Mat4 Right)
{
    ASSERT_COVERED(HMM_LinearCombineV4M4);

    HMM_Vec4 Result;
#ifdef HANDMADE_MATH__USE_SSE
    Result.SSE = _mm_mul_ps(_mm_shuffle_ps(Left.SSE, Left.SSE, 0x00), Right.Columns[0].SSE);
    Result.SSE = _mm_add_ps(Result.SSE, _mm_mul_ps(_mm_shuffle_ps(Left.SSE, Left.SSE, 0x55), Right.Columns[1].SSE));
    Result.SSE = _mm_add_ps(Result.SSE, _mm_mul_ps(_mm_shuffle_ps(Left.SSE, Left.SSE, 0xaa), Right.Columns[2].SSE));
    Result.SSE = _mm_add_ps(Result.SSE, _mm_mul_ps(_mm_shuffle_ps(Left.SSE, Left.SSE, 0xff), Right.Columns[3].SSE));
#else
    Result.X = Left.Elements[0] * Right.Columns[0].X;
    Result.Y = Left.Elements[0] * Right.Columns[0].Y;
    Result.Z = Left.Elements[0] * Right.Columns[0].Z;
    Result.W = Left.Elements[0] * Right.Columns[0].W;

    Result.X += Left.Elements[1] * Right.Columns[1].X;
    Result.Y += Left.Elements[1] * Right.Columns[1].Y;
    Result.Z += Left.Elements[1] * Right.Columns[1].Z;
    Result.W += Left.Elements[1] * Right.Columns[1].W;

    Result.X += Left.Elements[2] * Right.Columns[2].X;
    Result.Y += Left.Elements[2] * Right.Columns[2].Y;
    Result.Z += Left.Elements[2] * Right.Columns[2].Z;
    Result.W += Left.Elements[2] * Right.Columns[2].W;

    Result.X += Left.Elements[3] * Right.Columns[3].X;
    Result.Y += Left.Elements[3] * Right.Columns[3].Y;
    Result.Z += Left.Elements[3] * Right.Columns[3].Z;
    Result.W += Left.Elements[3] * Right.Columns[3].W;
#endif

    return Result;
}

/*
 * 2x2 Matrices