XMVector2TransformNormalStream

Transforms a stream of 2D normal vectors by a given matrix.

Syntax

XMFLOAT2* XMVector2TransformNormalStream(
         XMFLOAT2 *pOutputStream,
         size_t OutputStride,
         const XMFLOAT2 *pInputStream,
         size_t InputStride,
         size_t VectorCount,
         CXMMATRIX M
)  

Parameters

pOutputStream
Type: XMFLOAT2 *

[out]

Address of the first XMFLOAT2 in the destination stream.

OutputStride
Type: size_t 

[in]

Stride, in bytes, between vectors in the destination stream.

pInputStream
Type: XMFLOAT2 *

[in]

Address of the first XMFLOAT2 in the stream to be transformed.

InputStride
Type: size_t 

[in]

Stride, in bytes, between vectors in the input stream.

VectorCount
Type: size_t 

[in]

Number of vectors to transform.

M
Type: CXMMATRIX 

[in]

Transformation matrix.

Return value

Type: XMFLOAT2 *

Returns the address of the first XMFLOAT2 in the destination stream.

Remarks

Each vector in the input stream must be normalized.

XMVector2TransformNormalStream uses row 0 and 1 of the input transformation matrix for rotation and scaling. Rows 2 and 3 are ignored.

Requirements

Header: Declared in directxmath.h.