ID3DXEffectStateManager::SetVertexShaderConstantB

A callback function that must be implemented by a user to set an array of vertex shader Boolean constants.

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 Values

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.

Requirements

Header: Declared in D3dx9effect.h.