source: GTP/trunk/App/Demos/Illum/HierRayEngine/HREEffect.h @ 1481

#pragma once
#include <vector>
#include "Parameters.h"
#include "Vector.hpp"
#include "half.h"

#define RAY_TABLE_WIDTH         512
#define RAY_TABLE_HEIGHT                512

#define RAY_ORIGIN_COLOR_FORMAT         D3DFMT_A16B16G16R16F
#define RAY_DIR_COLOR_FORMAT                    D3DFMT_A16B16G16R16F
#define DEPTH_FORMAT                                                    D3DFMT_D24S8


class HREEffect
{
        //! pointer to global user-adjustable application parameters object
        static Parameters*              parameters;

        //! pointer to main DX device
        LPDIRECT3DDEVICE9               device;
        //! pointer to main DX effect
        LPD3DXEFFECT                    effect;

        //! frame color buffer surface
        //! saved before render-to-texture, and restored as the render target for the final rendering to the screen
        LPDIRECT3DSURFACE9              frameColorBuffer;
        //! frame depth buffer surface
        //! saved before render-to-texture, and restored as the render target for the final rendering to the screen
        LPDIRECT3DSURFACE9              frameDepthStencilBuffer;

    LPDIRECT3DTEXTURE9  rayOriginTableTexture;
    LPDIRECT3DSURFACE9  rayOriginTableSurface;

    LPDIRECT3DTEXTURE9  rayDirTableTexture;
    LPDIRECT3DSURFACE9  rayDirTableSurface;

    LPDIRECT3DTEXTURE9  rayOriginTableTexture2;
    LPDIRECT3DSURFACE9  rayOriginTableSurface2;

    LPDIRECT3DTEXTURE9  rayDirTableTexture2;
    LPDIRECT3DSURFACE9  rayDirTableSurface2;

    LPDIRECT3DTEXTURE9  conePeakTexture;
    LPDIRECT3DSURFACE9  conePeakSurface;
    LPDIRECT3DTEXTURE9  coneDirTexture;
    LPDIRECT3DSURFACE9  coneDirSurface;

    LPDIRECT3DTEXTURE9  conePeakTextureMem;
    LPDIRECT3DSURFACE9  conePeakSurfaceMem;
    LPDIRECT3DTEXTURE9  coneDirTextureMem;
    LPDIRECT3DSURFACE9  coneDirSurfaceMem;

        LPDIRECT3DCUBETEXTURE9 environmentCubeTexture;

    LPDIRECT3DSURFACE9  depthSurface;
        LPDIRECT3DSURFACE9      coneStencil;

        LPDIRECT3DVERTEXDECLARATION9 trianglePrimitiveDeclaration;

        //! camera
        CFirstPersonCamera*                     camera;
        //! primary light source (can be moved just like the real camera, and can be used as the camera)
        CFirstPersonCamera*                     lightCamera;

        //! struct containing all mesh related data. Will be filled from X files in HREEffect constructor
        class Mesh
        {
        public:
                HREEffect* owner;
                unsigned int            nSubsets;       //!< number of submeshes (with possible different material)
                LPD3DXMESH                      mesh;           //!< D3D mesh
                LPD3DXBUFFER            materialBuffer; //!< D3D material buffer
                D3DXMATERIAL*           materials;              //!< D3D material array
                LPDIRECT3DTEXTURE9*     textures;               //!< D3D textures for the materials
                LPDIRECT3DVERTEXBUFFER9 primitiveVertexBuffer; //!< ray engine representation of the mesh (list of points with a triangle encoded in each)

                HRESULT setVertexFormat(DWORD fvf, LPDIRECT3DDEVICE9 device);   //!< rebuild D3D to have differnet vertex format

        };
        //! private method that loads a mesh and its textures
        void loadMesh(LPCWSTR fileName);

        //! private method to load a texture
        LPDIRECT3DTEXTURE9 loadTexture(LPCWSTR fileName);

        //! release material texture resources
        void releaseTextures();
        //! release mesh resources
        void releaseMeshes();
        //! release entities
        void releaseEntities();

        //! struct that represents a virtual world object: a mesh and a model-world transformation matrix
        friend struct Entity;
        struct Entity
        {
                HREEffect* owner;       //!< enclosing class instance

                Mesh*   mesh;           //!< mesh
                D3DXMATRIX      modelWorldTransform;    //!< modeling transform
                D3DXMATRIX      inverseTransposedModelWorldTransform;   //!< IT modeling transform for surface normal transformation
        };

        //! vector of loaded meshes
        std::vector<Mesh*>      meshes;
        //! vector of loaded textures (textures specified in mesh's material will be loaded here)
        std::vector<LPDIRECT3DTEXTURE9> materialTextures;
        //! vector of virtual world objects
        std::vector<Entity> entities;

        //! for materials with no texture we will render with this texture
        LPDIRECT3DTEXTURE9              emptyTexture;

        //! render a full-screen quad
        static void drawFullScreenQuad(LPDIRECT3DDEVICE9 device, float depth = 0.0f, float fLeftU=0.0f, float fTopV=0.0f, float fRightU=1.0f, float fBottomV=1.0f);

                //! clever enum for supported final rendering methods
        class Method{
                unsigned int mid;
                Method(unsigned int mid) {this->mid = mid;}
                static const wchar_t * methodNames[10];
        public:
                Method(const Method& o) {mid = o.mid;}
                const Method& operator=(const Method& o) {mid = o.mid; return *this;}
                bool operator==(const Method& o) const {return mid == o.mid;}
                bool operator!=(const Method& o) const {return mid != o.mid;}
                const static Method RAYENGINE;
                const static Method LAST;
                const Method& next() {mid = (mid + 1)%LAST.mid; return *this;}
                const Method& prev() {mid = (mid + LAST.mid - 1)%LAST.mid; return *this;}
                const wchar_t* getName() {return methodNames[mid];}
        }method;
public:
        void nextMethod() {method.next();}
        void prevMethod() {method.prev();}
        const wchar_t* getCurrentMethodName() {return method.getName();}

        //! constructor: allocates all resources
        HREEffect(LPDIRECT3DDEVICE9 device);
        //! destructor: releases all resources
        ~HREEffect(void);

        //! renders the scene using the currently selected method
        void render();

        //! moves the virtual world objects (camera, light)
        void move(float fElapsedTime);

        LRESULT handleMessage( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);

        //! adds controls for the user-adjustable application parameters
        static void addUiParameters(Parameters* parameters);

        LPDIRECT3DDEVICE9 getDevice() {return device;}
};