ID3DXPRTEngine::SetSamplingInfo method
Sets sampling properties used by the precomputed radiance transfer (PRT) simulator.
Syntax
HRESULT SetSamplingInfo(
[in] UINT NumRays,
[in] BOOL UseSphere,
[in] BOOL UseCosine,
[in] BOOL Adaptive,
[in] FLOAT AdaptiveThresh
);
Parameters
-
NumRays [in]
-
Type: UINT
Number of light rays to direct at each sample. Must be greater than zero.
-
UseSphere [in]
-
Type: BOOL
If TRUE, samples will be computed over a full sphere. If FALSE, samples will be computed over a hemisphere.
-
UseCosine [in]
-
Type: BOOL
If TRUE, use a cosine weighting of samples. If both UseCosine and UseSphere are TRUE, the method will fail and an error will be returned.
-
Adaptive [in]
-
Type: BOOL
Must be FALSE. Adaptive sampling is currently not implemented.
-
AdaptiveThresh [in]
-
Type: FLOAT
Ignored.
Return value
Type: HRESULT
If the method succeeds, the return value is D3D_OK. If the method fails, the return value can be one of the following: D3DERR_INVALIDCALL, E_NOTIMPL, E_OUTOFMEMORY.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|
See also