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高級紋理映射技術（4）

發(fā)光映射

發(fā)光映射（glowing mapping）與黑暗映射正好相反，它對于模擬那些具有獨立于基礎貼圖的發(fā)光部分的物體很有用，比如模擬發(fā)光二極管、按鈕、建筑物內(nèi)的燈光、太空船上的燈光等。發(fā)光映射應僅影響基礎貼圖上的發(fā)光區(qū)域，而不影響其他部分。因此需要對發(fā)光效果做加法，而不是做乘法。

pd3dDevice->SetTexture(0, g_base_texture);
pd3dDevice->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX, 0);
pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_SELECTARG1);

pd3dDevice->SetTexture(1, g_dark_texture);
pd3dDevice->SetTextureStageState(1, D3DTSS_TEXCOORDINDEX, 0);
pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG1, D3DTA_TEXTURE);
pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG2, D3DTA_CURRENT);
pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_ADD);

運行效果：

 

細節(jié)映射

如果要模擬一塊粗糙的石灰泥墻壁，可以通過細節(jié)映射（detail mapping）來實現(xiàn)。實現(xiàn)過程是：將基礎貼圖（也就是第一張紋理）的顏色未經(jīng)修改便作為第二個紋理操作階段中的第二個參數(shù)，然后通過D3DTOP_ADDSIGNED將灰色的細節(jié)紋理與基礎貼圖相加。這個操作本質(zhì)上是做了一個加法，只是使用了有符號的顏色值來代替平時使用的無符號值。在對兩張紋理的像素顏色進行D3DTOP_ADDSIGNED操作時，它將參數(shù)的每個成分相加后再減去偏移量0.5，從而使有效值域變?yōu)?0.5 ~ 0.5。對一些比較舊的顯卡，當其不能支持D3DTOP_ADDSIGNED操作時，可以使用D3DTOP_MODULATE2X代替D3DTOP_ADDSIGNED操作進行模擬。

在細節(jié)貼圖中較亮的灰色紋理元素會使基礎貼圖變得更亮，而較暗的灰色紋理元素會使基礎貼圖變得更暗。由此可使物體呈現(xiàn)出粗糙的表面，從而使之看上去更為真實。示例代碼如下：

pd3dDevice->SetTexture(0, g_base_texture);
pd3dDevice->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX,	0);
pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1,		D3DTA_TEXTURE);		
pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP,		D3DTOP_SELECTARG1);
pd3dDevice->SetTexture(1, g_detail_texture);
pd3dDevice->SetTextureStageState(1, D3DTSS_TEXCOORDINDEX,	0);
pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG1,		D3DTA_TEXTURE);
pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG2,		D3DTA_CURRENT);
hr = pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_ADDSIGNED);
if(FAILED(hr))
	pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_MODULATE2X);

物體紋理

細節(jié)紋理

 

運行效果：

 

主程序:

#include "dxstdafx.h"
#include "resource.h"

#pragma warning(disable : 4127 4995 4996)

#define release_com(p)    do { if(p) { (p)->Release(); (p) = NULL; } } while(0)

struct sCustomVertex
{
    float x, y, z;
    float u, v;
};

#define D3DFVF_CUSTOM_VERTEX    (D3DFVF_XYZ | D3DFVF_TEX1)

#define IDC_TOGGLE_FULLSCREEN        1
#define IDC_TOGGLE_REF                2
#define IDC_CHANGE_DEVICE            3

#define BLEND_DARK                    1
#define BLEND_DARK_ANIM                2
#define BLEND_TEXTURE_DIFFUSE        3
#define BLEND_DARK_DIFFUSE            4
#define BLEND_GLOW                    5
#define BLEND_DETAIL                6

#define BLEND_INFO_DARK                L"Dark Blend"
#define BLEND_INFO_DARK_ANIM        L"Dark Blend Animation"
#define BLEND_INFO_TEXTURE_DIFFUSE    L"Blend Texture and Vertex Diffuse Color"
#define BLEND_INFO_DARK_DIFFUSE        L"Blend Texture and Vertex Diffuse Color and Dark"
#define BLEND_INFO_GLOW                L"Glow Mapping"
#define BLEND_INFO_DETAIL            L"Detail Mapping"

const D3DXCOLOR FONT_COLOR(0.85f, 0.85f, 0.85f, 1.0f);

CDXUTDialogResourceManager    g_dlg_resource_manager;
CD3DSettingsDlg                g_settings_dlg;
CDXUTDialog                    g_button_dlg;

IDirect3DVertexBuffer9*        g_vertex_buffer;
IDirect3DTexture9*            g_base_texture;
IDirect3DTexture9*            g_dark_texture;
IDirect3DTexture9*            g_detail_texture;

ID3DXFont*        g_font;
ID3DXSprite*    g_text_sprite;
bool            g_show_help = true;
D3DLIGHT9        g_light;
D3DMATERIAL9    g_material;
int                g_blend_flag = BLEND_DARK;
WCHAR            g_blend_info[128] = BLEND_INFO_DARK;

//--------------------------------------------------------------------------------------
// Rejects any devices that aren't acceptable by returning false
//--------------------------------------------------------------------------------------
bool CALLBACK IsDeviceAcceptable( D3DCAPS9* pCaps, D3DFORMAT AdapterFormat, 
                                  D3DFORMAT BackBufferFormat, bool bWindowed, void* pUserContext )
{
    // Typically want to skip backbuffer formats that don't support alpha blending

    IDirect3D9* pD3D = DXUTGetD3DObject(); 

    if( FAILED( pD3D->CheckDeviceFormat( pCaps->AdapterOrdinal, pCaps->DeviceType, AdapterFormat, 
                    D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING, D3DRTYPE_TEXTURE, BackBufferFormat ) ) )
        return false;

    // check whether device support multi textures render
    if(pCaps->MaxTextureBlendStages <= 1)
        return false;

    return true;
}


//--------------------------------------------------------------------------------------
// Before a device is created, modify the device settings as needed.
//--------------------------------------------------------------------------------------
bool CALLBACK ModifyDeviceSettings( DXUTDeviceSettings* pDeviceSettings, const D3DCAPS9* pCaps, void* pUserContext )
{
    // If video card does not support hardware vertex processing, then uses sofaware vertex processing.
    if((pCaps->DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT) == 0)
        pDeviceSettings->BehaviorFlags = D3DCREATE_SOFTWARE_VERTEXPROCESSING;

    static bool is_first_time = true;

    if(is_first_time)
    {
        is_first_time = false;

        // if using reference device, then pop a warning message box.
        if(pDeviceSettings->DeviceType == D3DDEVTYPE_REF)
            DXUTDisplaySwitchingToREFWarning();
    }

    return true;
}


//--------------------------------------------------------------------------------------
// Create any D3DPOOL_MANAGED resources here 
//--------------------------------------------------------------------------------------
HRESULT CALLBACK OnCreateDevice( IDirect3DDevice9* pd3dDevice, 
                                 const D3DSURFACE_DESC* pBackBufferSurfaceDesc, 
                                 void* pUserContext )
{
    HRESULT    hr;

    V_RETURN(g_dlg_resource_manager.OnCreateDevice(pd3dDevice));
    V_RETURN(g_settings_dlg.OnCreateDevice(pd3dDevice));

    D3DXCreateFont(pd3dDevice, 18, 0, FW_BOLD, 1, FALSE, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, DEFAULT_QUALITY,
                   DEFAULT_PITCH | FF_DONTCARE, L"Arial", &g_font);

    V_RETURN(D3DXCreateTextureFromFile(pd3dDevice, L"wall.bmp",    &g_base_texture));
    V_RETURN(D3DXCreateTextureFromFile(pd3dDevice, L"dark.bmp",    &g_dark_texture));
    V_RETURN(D3DXCreateTextureFromFile(pd3dDevice, L"detail.bmp",  &g_detail_texture));

    // create vertex buffer and fill data

    sCustomVertex vertices[] =     
    {
        { -3.0f, -3.0f,  0.0f,  0.0f, 1.0f},
        { -3.0f,  3.0f,  0.0f,  0.0f, 0.0f},
        {  3.0f, -3.0f,  0.0f,  1.0f, 1.0f},
        {  3.0f,  3.0f,  0.0f,  1.0f, 0.0f}
    };

    pd3dDevice->CreateVertexBuffer(sizeof(vertices), 0, D3DFVF_CUSTOM_VERTEX, D3DPOOL_MANAGED, &g_vertex_buffer, NULL);

    void* ptr;
    g_vertex_buffer->Lock(0, sizeof(vertices), (void**)&ptr, 0);
    memcpy(ptr, vertices, sizeof(vertices));
    g_vertex_buffer->Unlock();

    return S_OK;
}


//--------------------------------------------------------------------------------------
// Create any D3DPOOL_DEFAULT resources here 
//--------------------------------------------------------------------------------------
HRESULT CALLBACK OnResetDevice( IDirect3DDevice9* pd3dDevice, 
                                const D3DSURFACE_DESC* pBackBufferSurfaceDesc, 
                                void* pUserContext )
{
    HRESULT hr;

    V_RETURN(g_dlg_resource_manager.OnResetDevice());
    V_RETURN(g_settings_dlg.OnResetDevice());
    V_RETURN(g_font->OnResetDevice());
    V_RETURN(D3DXCreateSprite(pd3dDevice, &g_text_sprite));

    // set dialog position and size

    g_button_dlg.SetLocation(pBackBufferSurfaceDesc->Width - 170, 0);
    g_button_dlg.SetSize(170, 170);

    // setup view matrix

    D3DXMATRIX mat_view;
    D3DXVECTOR3 eye(0.0f, 0.0f, -10.0f);
    D3DXVECTOR3  at(0.0f, 0.0f,  0.0f);
    D3DXVECTOR3  up(0.0f, 1.0f,  0.0f);

    D3DXMatrixLookAtLH(&mat_view, &eye, &at, &up);
    pd3dDevice->SetTransform(D3DTS_VIEW, &mat_view);

    // set projection matrix
    D3DXMATRIX mat_proj;
    float aspect = (float)pBackBufferSurfaceDesc->Width / pBackBufferSurfaceDesc->Height;
    D3DXMatrixPerspectiveFovLH(&mat_proj, D3DX_PI/4, aspect, 1.0f, 100.0f);
    pd3dDevice->SetTransform(D3DTS_PROJECTION, &mat_proj);

    // setup light

    ZeroMemory(&g_light, sizeof(D3DLIGHT9));

    g_light.Type      = D3DLIGHT_DIRECTIONAL;
    g_light.Diffuse.r = 0.5f;
    g_light.Diffuse.g = 0.5f;
    g_light.Diffuse.b = 0.5f;

    D3DXVECTOR3 light_dir(0, 0, 10);
    D3DXVec3Normalize((D3DXVECTOR3*) &g_light.Direction, &light_dir);

    // setup material

    ZeroMemory(&g_material, sizeof(D3DMATERIAL9));

    g_material.Ambient.r = 1.0f;
    g_material.Ambient.g = 1.0f;
    g_material.Ambient.b = 1.0f;
    g_material.Ambient.a = 1.0f;
    g_material.Diffuse.r = 0.7f;
    g_material.Diffuse.g = 0.7f;
    g_material.Diffuse.b = 0.7f;
    g_material.Diffuse.a = 0.5f;

    // set texture sample method
    pd3dDevice->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
    pd3dDevice->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
    pd3dDevice->SetSamplerState(1, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
    pd3dDevice->SetSamplerState(1, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);

    return S_OK;
}

//--------------------------------------------------------------------------------------
// Release resources created in the OnResetDevice callback here 
//--------------------------------------------------------------------------------------
void CALLBACK OnLostDevice( void* pUserContext )
{
    g_dlg_resource_manager.OnLostDevice();
    g_settings_dlg.OnLostDevice();
    g_font->OnLostDevice();

    release_com(g_text_sprite);
}


//--------------------------------------------------------------------------------------
// Release resources created in the OnCreateDevice callback here
//--------------------------------------------------------------------------------------
void CALLBACK OnDestroyDevice( void* pUserContext )
{
    g_dlg_resource_manager.OnDestroyDevice();
    g_settings_dlg.OnDestroyDevice();    

    release_com(g_font);
    release_com(g_vertex_buffer);
    release_com(g_base_texture);
    release_com(g_dark_texture);
    release_com(g_detail_texture);
}

//--------------------------------------------------------------------------------------
// Handle updates to the scene
//--------------------------------------------------------------------------------------
void CALLBACK OnFrameMove( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime, void* pUserContext )
{
    HRESULT hr = S_OK;

    if(g_blend_flag == BLEND_DARK)
    {
        pd3dDevice->SetTexture(0, g_base_texture);
        pd3dDevice->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX,    0);
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1,        D3DTA_TEXTURE);
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP,            D3DTOP_SELECTARG1);

        pd3dDevice->SetTexture(1, g_dark_texture);
        pd3dDevice->SetTextureStageState(1, D3DTSS_TEXCOORDINDEX,    0);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG1,        D3DTA_TEXTURE);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG2,        D3DTA_CURRENT);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP,            D3DTOP_MODULATE);

        wcscpy(g_blend_info, BLEND_INFO_DARK);
    }
    else if(g_blend_flag == BLEND_DARK_ANIM)
    {
        pd3dDevice->SetTexture(0, g_base_texture);
        pd3dDevice->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX,    0);
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1,        D3DTA_TEXTURE);
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP,            D3DTOP_SELECTARG1);

        pd3dDevice->SetTexture(1, g_dark_texture);
        pd3dDevice->SetTextureStageState(1, D3DTSS_TEXCOORDINDEX,    0);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG1,        D3DTA_TEXTURE);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG2,        D3DTA_CURRENT);

        static double last_time = 0.0f;
        double interval = fTime - last_time;

        if(interval < 0.5f)
            pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_MODULATE);
        else if(interval > 0.5f && interval < 1.0f)
            pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_MODULATE2X);
        else if(interval > 1.0f && interval < 1.5f)
            pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_MODULATE4X);
        else if(interval > 1.5f)
            last_time = fTime;

        wcscpy(g_blend_info, BLEND_INFO_DARK_ANIM);
    }
    else if(g_blend_flag == BLEND_TEXTURE_DIFFUSE)
    {
        pd3dDevice->SetRenderState(D3DRS_LIGHTING, TRUE);
        pd3dDevice->SetRenderState(D3DRS_AMBIENT,  0x00808080);
        pd3dDevice->SetLight(0, &g_light);
        pd3dDevice->LightEnable(0, TRUE);
        pd3dDevice->SetMaterial(&g_material);

        pd3dDevice->SetTexture(0, g_base_texture);
        pd3dDevice->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX,    0);
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1,        D3DTA_TEXTURE);
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG2,        D3DTA_DIFFUSE);
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP,            D3DTOP_ADD);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP,            D3DTOP_DISABLE);
        
        wcscpy(g_blend_info, BLEND_INFO_TEXTURE_DIFFUSE);
    }
    else if(g_blend_flag == BLEND_DARK_DIFFUSE)
    {
        pd3dDevice->SetRenderState(D3DRS_LIGHTING, TRUE);
        pd3dDevice->SetRenderState(D3DRS_AMBIENT,  0x0080FFFF);
        pd3dDevice->SetLight(0, &g_light);
        pd3dDevice->LightEnable(0, TRUE);
        pd3dDevice->SetMaterial(&g_material);

        pd3dDevice->SetTexture(0, g_base_texture);
        pd3dDevice->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX,    0);
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1,        D3DTA_TEXTURE);
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG2,        D3DTA_DIFFUSE);
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP,            D3DTOP_MODULATE);
        
        pd3dDevice->SetTexture(1, g_dark_texture);
        pd3dDevice->SetTextureStageState(1, D3DTSS_TEXCOORDINDEX,    0);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG1,        D3DTA_TEXTURE);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG2,        D3DTA_CURRENT);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP,            D3DTOP_MODULATE);

        wcscpy(g_blend_info, BLEND_INFO_DARK_DIFFUSE);
    }
    else if(g_blend_flag == BLEND_GLOW)
    {
        pd3dDevice->SetTexture(0, g_base_texture);
        pd3dDevice->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX,    0);
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1,        D3DTA_TEXTURE);        
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP,            D3DTOP_SELECTARG1);

        pd3dDevice->SetTexture(1, g_dark_texture);
        pd3dDevice->SetTextureStageState(1, D3DTSS_TEXCOORDINDEX,    0);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG1,        D3DTA_TEXTURE);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG2,        D3DTA_CURRENT);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP,            D3DTOP_ADD);

        wcscpy(g_blend_info, BLEND_INFO_GLOW);        
    }
    else if(g_blend_flag == BLEND_DETAIL)
    {
        pd3dDevice->SetTexture(0, g_base_texture);
        pd3dDevice->SetTextureStageState(0, D3DTSS_TEXCOORDINDEX,    0);
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1,        D3DTA_TEXTURE);        
        pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP,            D3DTOP_SELECTARG1);

        pd3dDevice->SetTexture(1, g_detail_texture);
        pd3dDevice->SetTextureStageState(1, D3DTSS_TEXCOORDINDEX,    0);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG1,        D3DTA_TEXTURE);
        pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG2,        D3DTA_CURRENT);

        hr = pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_ADDSIGNED);

        if(FAILED(hr))
            pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_MODULATE2X);

        wcscpy(g_blend_info, BLEND_INFO_DETAIL);
    }
}

//--------------------------------------------------------------------------------------
// Render the helper information
//--------------------------------------------------------------------------------------
void RenderText()
{
    CDXUTTextHelper text_helper(g_font, g_text_sprite, 20);
    
    text_helper.Begin();

    // show frame and device states
    text_helper.SetInsertionPos(5, 5);
    text_helper.SetForegroundColor(FONT_COLOR);
    text_helper.DrawTextLine( DXUTGetFrameStats(true) );
    text_helper.DrawTextLine( DXUTGetDeviceStats() );

    // show other simple information
    text_helper.SetForegroundColor( D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f) );
    text_helper.DrawTextLine(g_blend_info);

    // show helper information
    
    const D3DSURFACE_DESC* surface_desc = DXUTGetBackBufferSurfaceDesc();

    if(g_show_help)
    {
        text_helper.SetInsertionPos(10, surface_desc->Height - 18 * 10);
        text_helper.SetForegroundColor(FONT_COLOR);
        text_helper.DrawTextLine(L"Controls (F1 to hide):");
        
        text_helper.SetInsertionPos(40, surface_desc->Height - 18 * 9);
        text_helper.DrawTextLine(L"Quit: ESC");

        text_helper.DrawTextLine(L"");
        text_helper.DrawTextLine(L"1: Dark Blend");
        text_helper.DrawTextLine(L"2: Dark Blend Animation");
        text_helper.DrawTextLine(L"3: Blend Texture and Vertex Diffuse Color");
        text_helper.DrawTextLine(L"4: Blend Texture and Vertex Diffuse Color and Dark");
        text_helper.DrawTextLine(L"5: Glow Mapping");
        text_helper.DrawTextLine(L"6: Detail Mapping");        
    }
    else
    {
        text_helper.SetInsertionPos(10, surface_desc->Height - 15 * 4);
        text_helper.SetForegroundColor( D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f) );
        text_helper.DrawTextLine(L"Press F1 for help");
    }

    text_helper.End();
}

//--------------------------------------------------------------------------------------
// Render the scene 
//--------------------------------------------------------------------------------------
void CALLBACK OnFrameRender( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime, void* pUserContext )
{
    HRESULT hr;

    if(g_settings_dlg.IsActive())
    {
        g_settings_dlg.OnRender(fElapsedTime);
        return;
    }

    // Clear the render target and the zbuffer 
    V( pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_ARGB(0, 32, 64, 80), 1.0f, 0) );

    // Render the scene
    if( SUCCEEDED( pd3dDevice->BeginScene() ) )
    {
        pd3dDevice->SetStreamSource(0, g_vertex_buffer, 0, sizeof(sCustomVertex));
        pd3dDevice->SetFVF(D3DFVF_CUSTOM_VERTEX);
        pd3dDevice->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);

        RenderText();

        V(g_button_dlg.OnRender(fElapsedTime));

        V( pd3dDevice->EndScene() );
    }
}


//--------------------------------------------------------------------------------------
// Handle messages to the application 
//--------------------------------------------------------------------------------------
LRESULT CALLBACK MsgProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, 
                          bool* pbNoFurtherProcessing, void* pUserContext )
{
    *pbNoFurtherProcessing = g_dlg_resource_manager.MsgProc(hWnd, uMsg, wParam, lParam);
    if(*pbNoFurtherProcessing)
        return 0;

    if(g_settings_dlg.IsActive())
    {
        g_settings_dlg.MsgProc(hWnd, uMsg, wParam, lParam);
        return 0;
    }

    *pbNoFurtherProcessing = g_button_dlg.MsgProc(hWnd, uMsg, wParam, lParam);
    if(*pbNoFurtherProcessing)
        return 0;

    return 0;
}


//--------------------------------------------------------------------------------------
// Handle keybaord event
//--------------------------------------------------------------------------------------
void CALLBACK OnKeyboardProc(UINT charater, bool is_key_down, bool is_alt_down, void* user_context)
{
    if(is_key_down)
    {
        switch(charater)
        {
        case VK_F1:
            g_show_help = !g_show_help;
            break;
        case 49:    // press key "1"
            g_blend_flag = BLEND_DARK;
            break;
        case 50:    // press key "2"
            g_blend_flag = BLEND_DARK_ANIM;
            break;
        case 51:    // press key "3"
            g_blend_flag = BLEND_TEXTURE_DIFFUSE;
            break;
        case 52:    // press key "4"
            g_blend_flag = BLEND_DARK_DIFFUSE;
            break;
        case 53:    // press key "5"
            g_blend_flag = BLEND_GLOW;
            break;
        case 54:    // press key "6"
            g_blend_flag = BLEND_DETAIL;
            break;
        }
    }
}

//--------------------------------------------------------------------------------------
// Handle events for controls
//--------------------------------------------------------------------------------------
void CALLBACK OnGUIEvent(UINT event, int control_id, CDXUTControl* control, void* user_context)
{
    switch(control_id)
    {
    case IDC_TOGGLE_FULLSCREEN:
        DXUTToggleFullScreen();
        break;

    case IDC_TOGGLE_REF:
        DXUTToggleREF();
        break;

    case IDC_CHANGE_DEVICE:
        g_settings_dlg.SetActive(true);
        break;
    }
}

//--------------------------------------------------------------------------------------
// Initialize dialogs
//--------------------------------------------------------------------------------------
void InitDialogs()
{
    g_settings_dlg.Init(&g_dlg_resource_manager);
    g_button_dlg.Init(&g_dlg_resource_manager);

    g_button_dlg.SetCallback(OnGUIEvent);

    int x = 35, y = 10, width = 125, height = 22;

    g_button_dlg.AddButton(IDC_TOGGLE_FULLSCREEN, L"Toggle full screen", x, y,         width, height);
    g_button_dlg.AddButton(IDC_TOGGLE_REF,          L"Toggle REF (F3)",     x, y += 24, width, height);
    g_button_dlg.AddButton(IDC_CHANGE_DEVICE,      L"Change device (F2)", x, y += 24, width, height, VK_F2);    
}

//--------------------------------------------------------------------------------------
// Initialize everything and go into a render loop
//--------------------------------------------------------------------------------------
INT WINAPI WinMain( HINSTANCE, HINSTANCE, LPSTR, int )
{
    // Enable run-time memory check for debug builds.
#if defined(DEBUG) | defined(_DEBUG)
    _CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
#endif

    // Set the callback functions
    DXUTSetCallbackDeviceCreated( OnCreateDevice );
    DXUTSetCallbackDeviceReset( OnResetDevice );
    DXUTSetCallbackDeviceLost( OnLostDevice );
    DXUTSetCallbackDeviceDestroyed( OnDestroyDevice );
    DXUTSetCallbackMsgProc( MsgProc );
    DXUTSetCallbackFrameRender( OnFrameRender );
    DXUTSetCallbackFrameMove( OnFrameMove );
    DXUTSetCallbackKeyboard(OnKeyboardProc);
   
    // TODO: Perform any application-level initialization here
    InitDialogs();

    // Initialize DXUT and create the desired Win32 window and Direct3D device for the application
    DXUTInit( true, true, true ); // Parse the command line, handle the default hotkeys, and show msgboxes
    DXUTSetCursorSettings( true, true ); // Show the cursor and clip it when in full screen
    DXUTCreateWindow( L"Texture Color Blend" );
    DXUTCreateDevice( D3DADAPTER_DEFAULT, true, 640, 480, IsDeviceAcceptable, ModifyDeviceSettings );

    // Start the render loop
    DXUTMainLoop();

    // TODO: Perform any application-level cleanup here

    return DXUTGetExitCode();
}

 

 

下載示例工程


posted on 2008-05-20 14:47 lovedday 閱讀(1622) 評論(1)  編輯 收藏 引用

評論

# re: 高級紋理映射技術（4） 2008-05-20 15:45 w2001

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