D2DGetInput function

Returns the color of input N at the input coordinate. Only available for simple inputs.

Syntax

float4 WINAPI D2DGetInput(
  in uint N
);

Parameters

N [in]

The input number.

Return value

The function returns a float4, containing the RGBA color in the format INPUTN.

Remarks

The following example shows the function being used as part of an arithmetic composite effect.

  
D2D_PS_ENTRY(PS_NAME)  
{  
    MIN_TYPE(float4) sourceColor = D2DGetInput(0);  
    MIN_TYPE(float4) destColor   = D2DGetInput(1);  
      
    MIN_TYPE(float4) output = // TODO: add math to composite source and dest

    return output;  
}  

Also, refer to the remarks for D2D_PS_ENTRY for another example of the use of this function.

Requirements

Requirement	Value
Header	D2d1effecthelpers.hlsli
DLL	D2d1.dll

See also

Effect Shader Linking

HLSL Helpers