class post_processor_surface
{
public:

    IDirect3DTexture9* m_pTexture;
    IDirect3DSurface9* m_pSurface;

    post_processor_surface(IDirect3DDevice9* _device);
    ~post_processor_surface();

    void Clear();

};


class post_processor
{
    post_processor_surface* m_first;
    post_processor_surface* m_second;

    IDirect3DVertexShader9* m_vertex_shader;
    IDirect3DPixelShader9* m_pixel_shader;

public:

     post_processor(IDirect3DDevice9*);
    ~post_processor();



    //
    // vertex program const
    // Name Reg Size
    // -------------- ----- ----
    float time; //c0 1
    float drojScaleImage; //c1 1
    float drojScale; //c2 1
    float drojSpeed; //c3 1
    //

    //
    // pixel program consts
    // Name Reg Size
    // ------------------ ----- ----
    //float g_time // c0 1
    float blur_factor; // c1 1
    float brightness; // c2 1
    float contrast; // c3 1
    float saturation; // c4 1
    D3DCOLORVALUE color; // c5 1
    float rastr_Speed; // c6 1
    float rastr_Size; // c7 1
    float rastr_Interference; // c8 1
    IDirect3DTexture9* Image; //s0 1
    IDirect3DVolumeTexture9* Rand; //s1 1
    //



    void set_values_to_default()
    {
        time = 0.0f;
        drojScaleImage = 1.0f;
        drojScale = 0.2f;
        drojSpeed = 10.06f;


        blur_factor = 0.23f;
        brightness = 1.2f;
        contrast = 1.64f;
        saturation = 2.0f;
        color.r = color.g = color.b = color.a = 1.0f;
        rastr_Speed = 0.77f;
        rastr_Size = 4.14f;
        rastr_Interference = 0.14f;


    }
    
    void draw_quad(IDirect3DDevice9*);

    void do_postprocesses( IDirect3DDevice9* device, post_processor_surface* sceneAfterDraw );



};

void RenderFrame()
{
HRESULT hr=0;

    D3DXMATRIX mat;
    D3DXMatrixIdentity(&mat);
    g_pd3dDevice->SetTransform( D3DTS_WORLD, &mat );
    g_pd3dDevice->SetTransform( D3DTS_VIEW, &mat );
    g_pd3dDevice->SetTransform( D3DTS_PROJECTION, &mat );

g_pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB( 0, 0, 255 ), 1.0f, 0 );

    // begin
    g_pd3dDevice->BeginScene();

    IDirect3DSurface9* backbuf=NULL;

    if (g_enable_postprocessing)
    {
        // set parameters
        g_post_processor->time = Time();
        g_post_processor->Rand = g_random3d;
     
        // get backbuffer rendertarget and set new rendertarget
        g_pd3dDevice->GetRenderTarget(0, &backbuf );
        g_pd3dDevice->SetRenderTarget(0, g_surface_for_scene->m_pSurface );
    }

    // draw image quad as sample scene
    draw_sample_scene();


    if (g_enable_postprocessing)
    {
        //restore rendertarget
        g_pd3dDevice->SetRenderTarget(0, backbuf );
        
        // end. do postprocesses
        g_post_processor->do_postprocesses(g_pd3dDevice, g_surface_for_scene );
    }
    
    //release backbuf interface
    if(backbuf) backbuf->Release();    backbuf=NULL;

     
    // end
    g_pd3dDevice->EndScene();
g_pd3dDevice->Present( NULL, NULL, NULL, NULL );
}