ID3DXPRTEngine::SetSamplingInfo

Sets sampling properties used by the precomputed radiance transfer (PRT) simulator.

HRESULT SetSamplingInfo(
  UINT NumRays,
  BOOL UseSphere,
  BOOL UseCosine,
  BOOL Adaptive,
  FLOAT AdaptiveThresh
);

Parameters

NumRays

[in] Number of light rays to direct at each sample. Must be greater than zero.

UseSphere

[in] If TRUE, samples will be computed over a full sphere. If FALSE, samples will be computed over a hemisphere.

UseCosine

[in] 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] Must be FALSE. Adaptive sampling is currently not implemented.

AdaptiveThresh

[in] Ignored.

Return Values

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

Header: Declared in D3dx9mesh.h.