D3DXCreateEffectEx

Creates an effect from an ASCII or binary effect description. This function is an extended version of D3DXCreateEffect that allows an application to control which parameters are ignored by the effects system.

HRESULT D3DXCreateEffectEx(
  LPDIRECT3DDEVICE9 pDevice,
  LPCVOID pSrcData,
  UINT SrcDataLen,
  CONST D3DXMACRO * pDefines,
  LPD3DXINCLUDE pInclude,
  LPCSTR pSkipConstants,
  DWORD Flags,
  LPD3DXEFFECTPOOL pPool,
  LPD3DXEFFECT * ppEffect,
  LPD3DXBUFFER * ppCompilationErrors
);

Parameters

pDevice

[in] Pointer to the device that will create the effect. See IDirect3DDevice9.

pSrcData

[in] Pointer to a buffer containing an effect description.

SrcDataLen

[in] Length of the effect data, in bytes.

pDefines

[in] Pointer to the preprocessor definitions. See D3DXMACRO.

pInclude

[in] Optional interface pointer, ID3DXInclude, to use for handling #include directives. If this value is NULL, #includes will either be honored when compiling from a file or will cause an error when compiled from a resource or memory.

pSkipConstants

[in] A string of effect parameters that will be ignored by the effect system. The string must be NULL terminated, and needs to contain the name of each application-managed constant separated by a semicolon.

Flags

[in] If pSrcData contains a text effect, flags can be a combination of D3DXSHADER Flags and D3DXFX flags; otherwise, pSrcData contains a binary effect and the only flags honored are D3DXFX flags.

pPool

[in] Pointer to an ID3DXEffectPool object to use for shared parameters. If this value is NULL, no parameters will be shared.

ppEffect

[out] Returns a pointer to an ID3DXEffect interface.

ppCompilationErrors

[out] Returns a buffer containing a list of compile errors.

Return Values

If the function succeeds, the return value is D3D_OK. If the function fails, the return value can be one of the following: D3DERR_INVALIDCALL, D3DXERR_INVALIDDATA.

Remarks

This function is an extended version of D3DXCreateEffect that allows an application to specify which effect constants will be managed by the application. A constant that is managed by the application is ignored by the effects system. That is, the application is responsible for initializing the constant as well as saving and restoring its state whenever appropriate.

This function checks each constant in pSkipConstants to see that:

• It is bound to a constant register.
• It is only used in HLSL shader code.

If a constant is named in the string that is not present in the effect, it is ignored.

Requirements

Header: Declared in D3dx9effect.h.

See Also

D3DXCreateEffectFromFileEx, D3DXCreateEffectFromResourceEx