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A callback function that must be implemented by a user to set an array of vertex shader Boolean constants.
Syntax
HRESULT SetVertexShaderConstantB(
UINT StartRegister, CONST BOOL* pConstantData, UINT RegisterCount );
Parameters
- StartRegister
- [out] The zero-based index of the first constant register.
- pConstantData
- [out] An array of Boolean constants.
- RegisterCount
- [out] The number of registers in pConstantData.
Return Value
The user-implemented method should return S_OK. If the callback fails when setting the device state, either of the following will occur:
- The effect will fail during ID3DXEffect::BeginPass.
- The dynamic effect state call (such as IDirect3DDevice9::SetVertexShaderConstantB) will fail.