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XMMatrixPerspectiveFovLH method

Builds a left-handed perspective projection matrix based on a field of view.

Syntax


XMMATRIX XMMatrixPerspectiveFovLH(
  [infloat FovAngleY,
  [infloat AspectRatio,
  [infloat NearZ,
  [infloat FarZ
);

Parameters

FovAngleY [in]

Top-down field-of-view angle in radians.

AspectRatio [in]

Aspect ratio of view-space X:Y.

NearZ [in]

Distance to the near clipping plane. Must be greater than zero.

FarZ [in]

Distance to the far clipping plane. Must be greater than zero.

Return value

Returns the perspective projection matrix.

Remarks

For typical usage, NearZ is less than FarZ. However, if you flip these values so FarZ is less than NearZ, the result is an inverted z buffer which can provide increased floating-point precision. NearZ and FarZ cannot be the same value.

Platform Requirements

Microsoft Visual Studio 2010 or Microsoft Visual Studio 2012 with the Windows SDK for Windows 8. Supported for Win32 desktop apps, Windows Store apps, and Windows Phone 8 apps.

Requirements

Namespace

Use DirectX.

Header

DirectXMath.h

See also

XMMatrixPerspectiveFovRH

 

 

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