D2DSampleInputAtPosition function
Samples input N at an absolute scene position, rather than an input-relative position. Only available for complex inputs.
Syntax
float4 WINAPI D2DSampleInputAtPosition( in uint N, in float2 uv );
Parameters
- N [in]
-
The input number.
- uv [in]
-
The uv position.
Return value
The function returns a float4, in the format TEXCOORDN.
Remarks
The following example shows the function used in a circular wrap.
D2D_PS_ENTRY(CircularWrapPS)
{
// TODO: perform math to calculate a circular wrap
// Find the input scene position.
float2 inputScenePosition = float2( TODO: add math parameters );
return D2DSampleInputAtPosition(0, inputScenePosition);
}
Requirements
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Header |
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DLL |
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See also
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