XMConvertFloatToHalfStream
XMConvertHalfToFloatStream
XMMatrixDecompose
XMPlaneTransformStream
XMVector2TransformCoordStream
XMVector2TransformNormalStream
XMVector2TransformStream
XMVector3ProjectStream
XMVector3TransformCoordStream
XMVector3TransformNormalStream
XMVector3TransformStream
XMVector3UnprojectStream
XMVector4TransformStream
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XMColorAdjustContrast method

Adjusts the contrast value of a color.

Syntax


XMVECTOR XMColorAdjustContrast(
  [in]  XMVECTOR C,
  [in]  float Contrast
);

Parameters

C [in]

XMVECTOR describing the color. Each of the components of C should be in the range 0.0f to 1.0f.

Contrast [in]

Contrast value. This parameter linearly interpolates between 50 percent gray and the color C. If this parameter is 0.0f, the returned color is 50 percent gray. If this parameter is 1.0f, the returned color is the original color.

Return value

Returns an XMVECTOR describing the color resulting from the contrast adjustment.

Remarks

The following pseudocode demonstrates the operation of the function.


XMVECTOR colorOut;

colorOut.x = (C.x - 0.5f) * Contrast + 0.5f;
colorOut.y = (C.y - 0.5f) * Contrast + 0.5f;
colorOut.z = (C.z - 0.5f) * Contrast + 0.5f;
colorOut.w = C.w;

return colorOut;

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

 

 

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