idx9pixelshader.h

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/**********************************************************************
 *<
    FILE: IDX9PixelShader.h

    DESCRIPTION: DirectX 9 Pixel Shader Interface Definition

    CREATED BY: Nikolai Sander and Norbert Jeske

    HISTORY: Created 9/27/00

 *> Copyright (c) 2000, All Rights Reserved.
 **********************************************************************/
#pragma once

#include "baseinterface.h"
#include <d3dx9.h>

// forward declarations
class ID3D9GraphicsWindow;
class IDX9VertexShader;
class Material;
class INode;

#define DX9_PIXEL_SHADER_INTERFACE_ID Interface_ID(0x544218fd, 0x7b344bc9)


class IDX9PixelShader : public BaseInterface
{
public:
    virtual Interface_ID GetID() { return DX9_PIXEL_SHADER_INTERFACE_ID; }

    // Confirm that the Direct3D Device can handle this PixelShader
    virtual HRESULT ConfirmDevice(ID3D9GraphicsWindow *gw) = 0;

    // Confirm that an associated VertexShader will work with this PixelShader
    virtual HRESULT ConfirmVertexShader(IDX9VertexShader *pvs) = 0;

    // Load PixelShader instructions and textures.  PixelShader instructions
    // should be loaded once and shared among all the nodes using this
    // PixelShader.  In addition, any textures necessary for the PixelShader
    // effect should be loaded once and shared among all the nodes using this
    // PixelShader.
    virtual HRESULT Initialize(Material *mtl, INode *node) = 0;

    // Number of passes for the effect this PixelShader creates.  Note that
    // this value will depend on the hardware currently in use.
    virtual int GetNumMultiPass() = 0;

    // Retrieve the PixelShader handle for the specified pass for use in GFX
    virtual LPDIRECT3DPIXELSHADER9 GetPixelShaderHandle(int numPass) = 0;

    // Set the PixelShader for the specified pass.  This call will be made at
    // least once per object to set the per object data for the PixelShader
    // such as the PixelShader constants.
    virtual HRESULT SetPixelShader(ID3D9GraphicsWindow *gw, int numPass) = 0;
};