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RayTraceEffects.cpp @ 3255

Revision 3255, 93.2 KB checked in by szirmay, 15 years ago (diff)

Line
1	SHADERBOL KIVENNI A TEXTURA HASZNALATOT
2
3	#include "dxstdafx.h"
4	#include "resource.h"
5
6	// Define X files path
7	#define BUNNY L"Media\\Objects\\bunny.x"
8	#define COLUMN L"Media\\Objects\\column.x"
9	#define ROOM L"Media\\Objects\\room.x"
10	#define SKULL L"Media\\Objects\\skull.x"
11	#define SPHERE L"Media\\Objects\\sphere.x"
12	#define TEAPOT L"Media\\Objects\\teapot.x"
13	#define TIGER L"Media\\Objects\\tiger.x"
14
15
16	//#define D3D_DEBUG_INFO
17
18	//#define DEBUG_VS // Uncomment this line to debug vertex shaders
19	//#define DEBUG_PS // Uncomment this line to debug pixel shaders
20
21
22	// Define texture sizes
23	#define CUBEMAP_SIZE 512 // size of CubeMaps
24	#define ATLASMAP_SIZE 512 // size of Atlases (Room, Columns)
25	#define SHADOWMAP_SIZE 512 // size of ShadowMap
26	#define PHOTONMAP_MAX_SIZE 256 // The max size of the PhotonMap
27	#define SNIPPET_MAX_SIZE 5 // The max size of the snippet
28
29	#define STEP 0.1f // The size of a movement between two step
30	#define CENTEROBJECTRADIUS 2.0f // radius of the center object
31	#define LIGHTRADIUS 0.3f // radius of the light object
32
33	//--------------------------------------------------------------------------------------
34	// UI control IDs
35	//--------------------------------------------------------------------------------------
36
37	#define IDC_TOGGLEFULLSCREEN 1
38	#define IDC_TOGGLEREF 2
39	#define IDC_CHANGEDEVICE 3
40	#define WINDOW_SIZE_X 640 // Size of the screen
41	#define WINDOW_SIZE_Y 640 // Size of the screen
42
43	// HUD IDs
44	#define IDC_SHADOW_CHECK_BOX 10
45	#define IDC_CAUSTICS_CHECK_BOX 11
46	#define IDC_CENTEROBJ_CHECK_BOX 12
47	#define IDC_SNIPPET_SIZE_IS_CONSTANT_CHECK_BOX 13
48	#define IDC_SHOW_PHOTON_MAP_CHECK_BOX 14
49
50
51	#define IDC_CLASSIC_METHOD 20
52	#define IDC_DISTANCE_IMPOSTOR_METHOD 21
53
54	#define IDC_NUMBER_OF_ITERATION_SLIDER 30
55	#define IDC_FRESNEL_FACTOR_SLIDER 31
56	#define IDC_REFRACTION_INDEX_SLIDER 32
57	#define IDC_SHADOW_INTENSITY_SLIDER 33
58	#define IDC_CAUSTICS_INTENSITY_SLIDER 34
59	#define IDC_PHOTON_MAP_SIZE_SLIDER 35
60	#define IDC_SNIPPET_SIZE_SLIDER 36
61
62	#define IDC_RESET_PARAMETERS_BUTTON 40
63
64	// These constants will be used as arguments for the RenderScene(..., int, ..) function
65	// They are used to switch between the different shaders
66	enum { RENDER_ROOM_COLOR_DISTANCE, RENDER_ROOM_UV, RENDER_ROOM_AND_COLUMNS_SCREEN, RENDER_PHOTON_UV_MAP, RENDER_PHOTON_HIT,
67	RENDER_REFRACT_OBJECT_SCREEN, RENDER_LIGHT_SCREEN, RENDER_UMBRA, RENDER_SHADOW, RENDER_FULLSCREENQUAD, RENDER_PHOTON_MAP_SCREEN };
68
69
70	// The next two float array pairs define the Snippet's light intensity and its size.
71	// These values (light intensity and size) depend on the PhotonMapSize.
72	// The bigger PhotonMapSize defines bigger texture and that defines more photon.
73	// The more photons need smaller intensity and size.
74	// PhotonMapSize = 1 2 4 8 16 32 64 128 256
75	// Tries to fill the same area with constant intensity.
76	float g_fIntensityOfSnippet[9] = { 0.05f, 0.06f, 0.08f, 0.11f, 0.185f, 0.27f, 0.53f, 1.00f, 1.65f };
77	float g_fSizeOfSnippet[9] = { 0.05f, 0.10f, 0.14f, 0.17f, 0.25f, 0.32f, 0.64f, 1.28f, 2.56f };
78
79	// Tries to fill the same area with texture's size independent Snippet's size.
80	float g_fIntensityOfSnippetWithIndependentSnippetSize[9] =
81	{ 0.05f, 0.05f, 0.05f, 0.065f, 0.13f, 0.27f, 0.53f, 1.00f, 1.65f };
82	float g_fSizeOfSnippetWithIndependentSnippetSize[9] =
83	{ 0.01f, 0.02f, 0.04f, 0.08f, 0.16f, 0.32f, 0.64f, 1.28f, 2.56f };
84
85
86
87	//--------------------------------------------------------------------------------------
88	// Structs
89	//--------------------------------------------------------------------------------------
90	// Vertex structure for a photon hit (called snippet)
91	D3DVERTEXELEMENT9 g_aSnippetVertex[] =
92	{
93	{ 0, 0, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0 },
94	{ 0, 12, D3DDECLTYPE_FLOAT4, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_COLOR, 0 },
95	{ 0, 28, D3DDECLTYPE_FLOAT2, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_TEXCOORD, 0 },
96	D3DDECL_END()
97	};
98
99	// Vertex structure for the fullscreene quad
100	D3DVERTEXELEMENT9 g_aFullScreneQuadVertex[] =
101	{
102	{ 0, 0, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0 },
103	D3DDECL_END()
104	};
105
106	// Define a snippet
107	struct SnippetVertexStruct
108	{
109	float x, y, z;
110	float r, g, b, a;
111	float u, v;
112	};
113
114	struct FullScreenQuadVertexStruct
115	{
116	FLOAT x, y, z, rhw; // The transformed position for the vertex.
117	};
118
119	#define D3DFVF_FULLSCREENQUADVERTEX (D3DFVF_XYZRHW)
120
121	FullScreenQuadVertexStruct fullscreen[] =
122	{
123	{ -1.0f, -1.0f, 0.5f, 1.0f, }, // x, y, z, rhw
124	{ 1.0f, -1.0f, 0.5f, 1.0f, },
125	{ 1.0f, 1.0f, 0.5f, 1.0f, },
126	{ -1.0f, -1.0f, 0.5f, 1.0f, },
127	{ 1.0f, 1.0f, 0.5f, 1.0f, },
128	{ -1.0f, 1.0f, 0.5f, 1.0f, },
129	};
130
131
132	//--------------------------------------------------------------------------------------
133	// Global variables
134	//--------------------------------------------------------------------------------------
135	IDirect3DDevice9* g_pd3dDevice = NULL; // RenderDevice
136
137	ID3DXFont* g_pFont = NULL; // Font for drawing text
138	ID3DXSprite* g_pTextSprite = NULL; // Sprite for batching draw text calls
139	ID3DXEffect* g_pEffect = NULL; // D3DX effect interface
140
141	CModelViewerCamera g_Camera; // A model viewing camera
142
143	CDXUTDialog g_HUD; // Dialog for sample specific controls
144
145
146	// Textures
147	LPDIRECT3DTEXTURE9 g_pPhotonUVTexture = NULL; // Texture where the Photon map is rendered
148	LPDIRECT3DTEXTURE9 g_pPowerOfSnippetTexelTexture = NULL; // Texture to contain the power of the snippet Texels
149	LPDIRECT3DTEXTURE9 g_pRoomModifyTexture = NULL; // Room's Texture, this has viewable black edges
150	LPDIRECT3DTEXTURE9 g_pRoomLastTexture = NULL; // Room's Texture, this contains the original brdf,
151	// the Caustics Effect and the shadow
152	LPDIRECT3DTEXTURE9 g_pColumnModifyTexture[4]; // Columns Texture
153	LPDIRECT3DTEXTURE9 g_pColumnLastTexture[5]; // Columns Texture, the last one contains the original brdf
154	LPDIRECT3DTEXTURE9 g_pRoomTexture = NULL; // Room's original Texture (brdf)
155	LPDIRECT3DTEXTURE9 g_pShadowMapTexture = NULL; // Shadow map's texture. This is used for shadow generation.
156
157	// Surfaces for the textures
158	LPDIRECT3DSURFACE9 g_pColumnsModifySurface[4]; // Columns Atlas
159	LPDIRECT3DSURFACE9 g_pColumnsLastSurface[5]; // Columns Atlas
160	LPDIRECT3DSURFACE9 g_pRoomLastSurface = NULL; // Room's Atlas
161	LPDIRECT3DSURFACE9 g_pRoomModifySurface = NULL; // Room's Atlas
162	LPDIRECT3DSURFACE9 g_pRoomSurface = NULL; // Room's Atlas
163	LPDIRECT3DSURFACE9 g_pPhotonMapDepthStencilSurface = NULL; // Used to render Photon map
164	LPDIRECT3DSURFACE9 g_pPhotonUVMapSurface = NULL; // Photon map's UV surface
165	LPDIRECT3DSURFACE9 g_pShadowMapSurface = NULL; // Shadow map's surface
166	LPDIRECT3DSURFACE9 g_pShadowMapDepthStencilSSurface = NULL; // Shadow DS's Z surface
167
168	LPDIRECT3DSURFACE9 g_pRenderTargetSurfaceOld = NULL; // Store the original Screen's surface
169	LPDIRECT3DSURFACE9 g_pDepthStencilSurfaceOld = NULL; // Store the original Screen's DSS
170
171	// Cube map textures
172	IDirect3DCubeTexture9* g_pRoomCubeMapColorDistTexture = NULL; // CubeMap for store: Color + Distance
173	IDirect3DCubeTexture9* g_pRoomCubeMapUVTexture = NULL; // CubeMap for store: UV + ObjectID
174
175	IDirect3DSurface9* g_pRoomCubeMapDepthStencilSurface = NULL; // Depth-stencil buffer for rendering to cube texture
176	IDirect3DSurface9* g_pDepthStencilSurface = NULL; // Depth-stencil buffer for Room Texture
177
178	IDirect3DVertexDeclaration9* g_pSnippetVertexDeclaration = NULL; // Vertex declaration for the snippet
179	IDirect3DVertexDeclaration9* g_pFullScreenQuadVertexDeclaration = NULL; // Vertex declaration for the fullscreen quad
180
181	LPDIRECT3DVERTEXBUFFER9 g_pFullScreenQuadVertexBuffer = NULL; // Contains vertex data for the fullscreen quad
182	LPDIRECT3DVERTEXBUFFER9 g_bSnippetVertexBuffer = NULL; // Contains vertex data for the snippets
183
184	// Meshes
185	ID3DXMesh* g_pCenterObjectMesh = NULL; // Mesh for the center object
186	ID3DXMesh* g_pRoomMesh = NULL; // Mesh representing room (wall, floor, ceiling)
187	ID3DXMesh* g_pColumnMesh = NULL; // Mesh representing one Column
188	ID3DXMesh* g_pLightMesh = NULL; // Mesh for the light object
189
190	// Flags
191	bool g_bShowHelp = false; // If true, it renders the UI control text
192	bool g_bInitialization = true; // Initialization is in progress
193	bool g_bRunGenerateCaustics = false; // Rerender Caustics Effect
194	bool g_bShadowON = true; // Calculate shadow yes/no.
195	bool g_bCausticsON = true; // Calculate caustics yes/no.
196	bool g_bShowVariables = true; // Show the values of the algorithm's variables
197	bool g_bShowVariablesUserSet = true; // The user sets to show the variables.
198	bool g_bRenderCenterObjectWithBrdfON = true; // Render Center Objectum with normal texture or diffuse color.
199	bool g_bShowHUD = true; // Show HUD
200	bool g_bSaveTexture = false; // Just for debug.
201	bool g_bSnippetSizeIsConstant = false; // The fSnippetSize is independent of the size of PhotonMap.
202	// Its size is constant in world space.
203	bool g_bShowPhotonMap = true; // Show PhotonMap on screen
204
205	// Matrices
206	D3DXMATRIXA16 g_mWorldCenterObject; // World matrix of the Center Object (scaling & offset)
207	D3DXMATRIXA16 g_mWorldViewLight; // Light's worldview matrix
208	D3DXMATRIXA16 g_mProjLight; // Light's projection matrix
209	D3DXMATRIXA16 g_mTexScaleBiasMat; // Special texture matrix for ShadowMapping
210	D3DXMATRIXA16 g_mLightViewTexBias; // Light view matrix multiplied by g_mTexScaleBiasMat
211
212
213	// Floats
214	float g_fFresnelFactor = 0.05f; // The Fresnel factor
215	float g_fRefractionIndex = 0.9f; // The Refraction index
216	float g_fShadowIntensity = 0.25f; // The intensity of the shadow
217	float g_fCausticsIntensity = 0.05f; // The intensity of a caustics snippet
218	float g_fCenterObjectSize = 1.0; // The scale of the CenterObject
219	float g_fSnippetSize = 3.0f; // The size of a snippet;
220	float g_dDepthBias = 0.0002f; // Depth bias value
221	float g_dBiasSlope = 2.0f; // Bias slope
222
223
224	// Vectors
225	D3DXVECTOR3 g_vLightPos; // Define the position of light
226	D3DXVECTOR3 g_vLightPosLast; // Light position at the last Caustic Effect generation
227	D3DXVECTOR3 g_vCenterObjectPosInitial; // Define the offset of the center object in the X file
228	D3DXVECTOR3 g_vCenterObjectPos; // Define the offset of the center object
229	D3DXVECTOR3 g_vCenterObjectPosLast; // CenterObj position at the last Caustic Effect generation
230
231	int g_iNumberOfIteration = 10; // The number of the iteration of the algorithm.
232	int g_iObjectID = -1; // The identifier of the object in the scene.
233	// Every object has its own ID.
234	int g_iAlgorithmMethod = 1; // Here you can switch between the classical and our distance impstor method.
235	int g_iPhotonMapSize = 64; // Size of the PhotonMap
236
237
238	//--------------------------------------------------------------------------------------
239	// Forward declarations
240	//--------------------------------------------------------------------------------------
241	bool CALLBACK IsDeviceAcceptable( D3DCAPS9* pCaps, D3DFORMAT AdapterFormat, D3DFORMAT BackBufferFormat, bool bWindowed );
242	void CALLBACK ModifyDeviceSettings( DXUTDeviceSettings* pDeviceSettings, const D3DCAPS9* pCaps );
243
244	// This function creates the vertex buffer for the snippets,
245	// controls the compiler properties,
246	// loads the effect file and the meshes and
247	// sets up the matrices.
248	HRESULT CALLBACK OnCreateDevice( IDirect3DDevice9* pd3dDevice, const D3DSURFACE_DESC* pBackBufferSurfaceDesc );
249
250	// This function contains the texture generation.
251	HRESULT CALLBACK OnResetDevice( IDirect3DDevice9* pd3dDevice, const D3DSURFACE_DESC* pBackBufferSurfaceDesc );
252
253	void CALLBACK OnFrameMove( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime );
254
255	// This is the most important function. It is called at every frame. Steps:
256	// - some initialization
257	// At the first call we make the initialization. This runs just once, when the program starts.
258	// - update caustics if necessary
259	// Then it decides whether the caustics effect should be rerendered or not.
260	// Re-rendering the caustic effect is requested if there were some major changes (movements) in the scene.
261	// - render to screen
262	// The last task is to render the objects of the scene to the screen.
263	void CALLBACK OnFrameRender( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime );
264
265	LRESULT CALLBACK MsgProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, bool* pbNoFurtherProcessing );
266
267	// This function handles keyboard events (user inputs).
268	void CALLBACK KeyboardProc( UINT nChar, bool bKeyDown, bool bAltDown );
269
270	// The next two functions clear the variables from the memory.
271	void CALLBACK OnLostDevice();
272	void CALLBACK OnDestroyDevice();
273
274	// This function displays the values of the algorithm's variables and the help text.
275	void RenderText();
276
277	// It loads a mesh from the specified X file and - after determining its size and bounding box -
278	// centers it on the screen.
279	HRESULT LoadMesh( WCHAR* strFileName, ID3DXMesh** ppMesh, bool bComputeBoundingBox );
280
281	// This function creates the cube maps.
282	// The first cube map stores color and distance values, created from the CenterObject's position. (g_pRoomCubeMapColorDistTexture)
283	// The second one is created from the same position. (g_pRoomCubeMapUVTexture)
284	// It stores at every pixel the viewable object's ID and UV.
285	void RenderScenePreProcessing();
286
287	// This function generates the caustics effect.
288	// At first it creates a photon map created from the light's position.
289	// This map stores the viewable ObjectID and UV at every pixel.
290	// This information is gathered from the second (g_pRoomCubeMapUVTexture) CubeMap.
291	// The second step is to create the shadow map (g_pShadowMapTexture). This map contains depth values.
292	// This map is generated from the light's position.
293	// The last step is to blend caustics snippets and generate shadow into the room's and the columns's atlases at the right places.
294	void GenerateCaustics();
295
296	// This function contains the GPU calls.
297	// It calculates and sets up the values of the variables which are needed for the actual technique.
298	void RenderScene( D3DXMATRIXA16 mWorld, D3DXMATRIXA16 mProj, int method );
299
300	// This function binds the texture to the GPU.
301	void RenderSceneInitialization();
302
303	// Functions to crate different type of textures.
304	IDirect3DTexture9* CreateTexture( int size, D3DFORMAT Format );
305	IDirect3DCubeTexture9* CreateCubeTexture( int size, D3DFORMAT Format );
306	IDirect3DSurface9* CreateDepthStencilSurface( int size );
307
308	// This function creates vertex buffer.
309	void CreateVertexBuffer();
310
311	void InitializeHUD();
312	void CALLBACK OnGUIEvent( UINT nEvent, int nControlID, CDXUTControl* pControl );
313
314	//--------------------------------------------------------------------------------------
315	// Entry point to the program. Initializes everything and goes into a message processing
316	// loop. Idle time is used to render the scene.
317	//--------------------------------------------------------------------------------------
318	INT WINAPI WinMain( HINSTANCE, HINSTANCE, LPSTR, int )
319	{
320	// Set the callback functions. These functions allow the sample framework to notify
321	// the application about device changes, user input, and windows messages. The
322	// callbacks are optional so you need only set callbacks for events you're interested
323	// in. However, if you don't handle the device reset/lost callbacks then the sample
324	// framework won't be able to reset your device since the application must first
325	// release all device resources before resetting. Likewise, if you don't handle the
326	// device created/destroyed callbacks then the sample framework won't be able to
327	// recreate your device resources.
328	DXUTSetCallbackDeviceCreated( OnCreateDevice );
329	DXUTSetCallbackDeviceReset( OnResetDevice );
330	DXUTSetCallbackDeviceLost( OnLostDevice );
331	DXUTSetCallbackDeviceDestroyed( OnDestroyDevice );
332	DXUTSetCallbackMsgProc( MsgProc );
333	DXUTSetCallbackKeyboard( KeyboardProc );
334	DXUTSetCallbackFrameRender( OnFrameRender );
335	DXUTSetCallbackFrameMove( OnFrameMove );
336
337	// Show the cursor and clip it when in full screen
338	DXUTSetCursorSettings( true, true );
339
340
341
342	// Initialize the sample framework and create the desired Win32 window and Direct3D
343	// device for the application. Calling each of these functions is optional, but they
344	// allow you to set several options which control the behavior of the framework.
345	DXUTInit( true, true, true ); // Parse the command line, handle the default hotkeys, and show msgboxes
346	DXUTCreateWindow( L"RayTraceEffects" );
347	DXUTCreateDevice( D3DADAPTER_DEFAULT, true, WINDOW_SIZE_X, WINDOW_SIZE_Y, IsDeviceAcceptable, ModifyDeviceSettings );
348
349	// Pass control to the sample framework for handling the message pump and
350	// dispatching render calls. The sample framework will call your FrameMove
351	// and FrameRender callback when there is idle time between handling window messages.
352	DXUTMainLoop();
353
354	// Perform any application-level cleanup here. Direct3D device resources are released within the
355	// appropriate callback functions and therefore don't require any cleanup code here.
356
357	return DXUTGetExitCode();
358	}
359
360	//--------------------------------------------------------------------------------------
361	// Initialize the app
362	//--------------------------------------------------------------------------------------
363	void InitializeHUD()
364	{
365	// Initialize dialog
366	int posX = 350;
367	int posY = 35;
368	int sliderWidth = 120;
369	int sliderHeight = 14;
370	g_HUD.SetCallback( OnGUIEvent );
371
372	g_HUD.AddSlider( IDC_NUMBER_OF_ITERATION_SLIDER, posX, posY += 16, sliderWidth, sliderHeight, 0,
373	20, g_iNumberOfIteration );
374
375	g_HUD.AddSlider( IDC_FRESNEL_FACTOR_SLIDER, posX, posY += 16, sliderWidth, sliderHeight, 0,
376	100, (int)( g_fFresnelFactor * 100.0f ) );
377
378	g_HUD.AddSlider( IDC_REFRACTION_INDEX_SLIDER, posX, posY += 16, sliderWidth, sliderHeight, 0,
379	100, (int)( g_fRefractionIndex * 100.0f + 1 ) );
380
381	g_HUD.AddSlider( IDC_SHADOW_INTENSITY_SLIDER, posX, posY += 16, sliderWidth, sliderHeight, 0,
382	100, (int)( g_fShadowIntensity * 100.0f ) );
383
384	g_HUD.AddSlider( IDC_CAUSTICS_INTENSITY_SLIDER, posX, posY += 16, sliderWidth, sliderHeight, -4000,
385	500, (int)( log( g_fCausticsIntensity ) / log ( 1.2f ) * 100.0f ) );
386
387	g_HUD.AddSlider( IDC_PHOTON_MAP_SIZE_SLIDER, posX, posY += 16, sliderWidth, sliderHeight, 0,
388	(int)( log( (float)PHOTONMAP_MAX_SIZE ) / log( 2.0f ) ), (int)( log( (float)g_iPhotonMapSize ) / log( 2.0f ) ) );
389
390	g_HUD.AddSlider( IDC_SNIPPET_SIZE_SLIDER, posX, posY += 16, sliderWidth, sliderHeight, 0,
391	SNIPPET_MAX_SIZE * 100, (int)( g_fSnippetSize * 100.0f ) );
392
393	// --------------------------------------------------------------------------------------------
394
395	posX = 0;
396	posY = 35;
397
398	g_HUD.AddCheckBox( IDC_SHADOW_CHECK_BOX, L"Shadow ON/OFF", posX, posY += 20, 125, 16, g_bShadowON, 'S' );
399	g_HUD.AddCheckBox( IDC_CAUSTICS_CHECK_BOX, L"Caustics ON/OFF", posX, posY += 20, 125, 16, g_bCausticsON, 'C' );
400	g_HUD.AddCheckBox( IDC_CENTEROBJ_CHECK_BOX, L"CenterObj ON/OFF", posX, posY += 20, 125, 16, g_bRenderCenterObjectWithBrdfON, 'X' );
401	g_HUD.AddCheckBox( IDC_SNIPPET_SIZE_IS_CONSTANT_CHECK_BOX, L"Indep. Snippet size?", posX, posY += 20, 125, 16, g_bSnippetSizeIsConstant, 'V' );
402	g_HUD.AddCheckBox( IDC_SHOW_PHOTON_MAP_CHECK_BOX, L"Show Ph.Map ON/OFF", posX, posY += 20, 125, 16, g_bShowPhotonMap, 'M' );
403
404
405	g_HUD.AddRadioButton( IDC_CLASSIC_METHOD, 1, L"Classic method", posX, posY += 30, 125, 16, false );
406	g_HUD.AddRadioButton( IDC_DISTANCE_IMPOSTOR_METHOD, 1, L"Dist. imp. method", posX, posY += 20, 125, 16, true );
407
408	g_HUD.AddButton( IDC_RESET_PARAMETERS_BUTTON, L"Reset parameters", posX, posY += 30, 125, 16, 'Y' );
409	}
410
411
412	//--------------------------------------------------------------------------------------
413	// Called during device initialization, this code checks the device for some
414	// minimum set of capabilities, and rejects those that don't pass by returning false.
415	//--------------------------------------------------------------------------------------
416	bool CALLBACK IsDeviceAcceptable( D3DCAPS9* pCaps, D3DFORMAT AdapterFormat,
417	D3DFORMAT BackBufferFormat, bool bWindowed )
418	{
419	// Skip backbuffer formats that don't support alpha blending
420	IDirect3D9* pD3D = DXUTGetD3DObject();
421	if( FAILED( pD3D->CheckDeviceFormat( pCaps->AdapterOrdinal, pCaps->DeviceType,
422	AdapterFormat, D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING,
423	D3DRTYPE_TEXTURE, BackBufferFormat ) ) )
424	return false;
425
426	// Must support cube textures
427	if( !( pCaps->TextureCaps & D3DPTEXTURECAPS_CUBEMAP ) )
428	return false;
429
430	// Must support pixel shader 3.0
431	if( pCaps->PixelShaderVersion < D3DPS_VERSION( 3, 0 ) )
432	return false;
433
434	// need to support D3DFMT_A32B32G32R32F render target
435	if( FAILED( pD3D->CheckDeviceFormat( pCaps->AdapterOrdinal, pCaps->DeviceType,
436	AdapterFormat, D3DUSAGE_RENDERTARGET,
437	D3DRTYPE_CUBETEXTURE, D3DFMT_A32B32G32R32F ) ) )
438	return false;
439
440	return true;
441	}
442
443
444	//--------------------------------------------------------------------------------------
445	// This callback function is called immediately before a device is created to allow the
446	// application to modify the device settings. The supplied pDeviceSettings parameter
447	// contains the settings that the framework has selected for the new device, and the
448	// application can make any desired changes directly to this structure. Note however that
449	// the sample framework will not correct invalid device settings so care must be taken
450	// to return valid device settings, otherwise IDirect3D9::CreateDevice() will fail.
451	//--------------------------------------------------------------------------------------
452	void CALLBACK ModifyDeviceSettings( DXUTDeviceSettings* pDeviceSettings, const D3DCAPS9* pCaps )
453	{
454	// If device doesn't support HW T&L or doesn't support 1.1 vertex shaders in HW then switch to SWVP.
455	if( (pCaps->DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT) == 0 \|\|
456	pCaps->VertexShaderVersion < D3DVS_VERSION(1,1) )
457	{
458	pDeviceSettings->BehaviorFlags = D3DCREATE_SOFTWARE_VERTEXPROCESSING;
459	}
460	else
461	{
462	pDeviceSettings->BehaviorFlags = D3DCREATE_HARDWARE_VERTEXPROCESSING;
463	}
464
465	// This application is designed to work on a pure device by not using
466	// IDirect3D9::Get*() methods, so create a pure device if supported and using HWVP.
467	if ((pCaps->DevCaps & D3DDEVCAPS_PUREDEVICE) != 0 &&
468	(pDeviceSettings->BehaviorFlags & D3DCREATE_HARDWARE_VERTEXPROCESSING) != 0 )
469	pDeviceSettings->BehaviorFlags \|= D3DCREATE_PUREDEVICE;
470
471	// Debugging vertex shaders requires either REF or software vertex processing
472	// and debugging pixel shaders requires REF.
473	#ifdef DEBUG_VS
474	if( pDeviceSettings->DeviceType != D3DDEVTYPE_REF )
475	{
476	pDeviceSettings->BehaviorFlags &= ~D3DCREATE_HARDWARE_VERTEXPROCESSING;
477	pDeviceSettings->BehaviorFlags &= ~D3DCREATE_PUREDEVICE;
478	pDeviceSettings->BehaviorFlags \|= D3DCREATE_SOFTWARE_VERTEXPROCESSING;
479	}
480	#endif
481	#ifdef DEBUG_PS
482	pDeviceSettings->DeviceType = D3DDEVTYPE_REF;
483	#endif
484	}
485
486
487
488	// Creates VertexBuffer
489	void CreateVertexBuffer()
490	{
491	HRESULT hr;
492
493	SAFE_RELEASE( g_bSnippetVertexBuffer );
494
495	V( g_pd3dDevice->CreateVertexBuffer( (sizeof(float) * 54 * g_iPhotonMapSize * g_iPhotonMapSize ),
496	D3DUSAGE_WRITEONLY, D3DFVF_XYZ \| D3DFVF_DIFFUSE \| D3DFVF_TEX0 \| D3DFVF_TEXCOORDSIZE2( 2 ),
497	D3DPOOL_DEFAULT, &g_bSnippetVertexBuffer, NULL ) );
498
499	void* pData;
500	V ( g_bSnippetVertexBuffer->Lock( 0, 0, &pData, 0 ) );
501	float* pVertexBuffer = (float*)pData;
502	for ( int i = 0; i < g_iPhotonMapSize; i++ )
503	{
504	for ( int j = 0; j < g_iPhotonMapSize; j++ )
505	{
506	// Determines the exponent of the PhotonMap size.
507	// It is used as an index to look up from g_fSizeOfSnippet array.
508	int iPhotonMapSizeExponent = (int)(log( (float)g_iPhotonMapSize ) / log ( 2.0f ) + 0.5f ); // 0..8
509
510	// By default the fSnippetSize is not constant in world space
511	float fSnippetSize = g_fSizeOfSnippet[ iPhotonMapSizeExponent ] * g_fSnippetSize / g_iPhotonMapSize;
512	// Decides wether the Snippet size is constant in world space or not.
513	if ( g_bSnippetSizeIsConstant )
514	// If constant
515	fSnippetSize = g_fSizeOfSnippetWithIndependentSnippetSize[ iPhotonMapSizeExponent ] * g_fSnippetSize / g_iPhotonMapSize;
516
517	float number = (float)( i * g_iPhotonMapSize + j );
518
519	float u = (float) i / g_iPhotonMapSize;
520	float v = (float) j / g_iPhotonMapSize;
521
522	SnippetVertexStruct snippetVertices[] =
523	{
524	// x, y, z, r, g,b,a, u, v,
525	{ -fSnippetSize, -fSnippetSize, 0, number, 0,1,0, u, v },
526	{ -fSnippetSize, fSnippetSize, 0, number, 0,0,0, u, v },
527	{ fSnippetSize, fSnippetSize, 0, number, 1,0,0, u, v },
528	{ fSnippetSize, fSnippetSize, 0, number, 1,0,0, u, v },
529	{ fSnippetSize, -fSnippetSize, 0, number, 1,1,0, u, v },
530	{ -fSnippetSize, -fSnippetSize, 0, number, 0,1,0, u, v },
531	};
532
533	memcpy( pVertexBuffer, snippetVertices, sizeof( snippetVertices ) );
534	pVertexBuffer += 54;
535	}
536	}
537	V (g_bSnippetVertexBuffer->Unlock() );
538
539	SAFE_RELEASE( g_pPhotonMapDepthStencilSurface );
540	SAFE_RELEASE( g_pPhotonUVTexture );
541	SAFE_RELEASE( g_pPhotonUVMapSurface );
542
543	g_pPhotonMapDepthStencilSurface = CreateDepthStencilSurface( g_iPhotonMapSize );
544	g_pPhotonUVTexture = CreateTexture( g_iPhotonMapSize, D3DFMT_A32B32G32R32F );
545	V( g_pPhotonUVTexture->GetSurfaceLevel( 0, &g_pPhotonUVMapSurface ) );
546
547	// Sends the new texture parameters to the GPU.
548	RenderSceneInitialization();
549	}
550
551
552	D3DXMATRIXA16 ScaleAndOffset(float fScale, D3DXVECTOR3 vOffset)
553	{
554	D3DXMATRIXA16 mScale, mOffset;
555	D3DXMatrixIdentity(&mScale);
556	D3DXMatrixIdentity(&mOffset);
557
558	D3DXMatrixTranslation( &mOffset, vOffset.x, vOffset.y, vOffset.z );
559	D3DXMatrixScaling( &mScale, fScale, fScale, fScale );
560
561	return mScale * mOffset;
562	}
563
564	//--------------------------------------------------------------------------------------
565	// This callback function will be called immediately after the Direct3D device has been
566	// created, which will happen during application initialization and windowed/full screen
567	// toggles. This is the best location to create D3DPOOL_MANAGED resources since these
568	// resources need to be reloaded whenever the device is destroyed. Resources created
569	// here should be released in the OnDestroyDevice callback.
570	//--------------------------------------------------------------------------------------
571	HRESULT CALLBACK OnCreateDevice( IDirect3DDevice9* pd3dDevice, const D3DSURFACE_DESC* pBackBufferSurfaceDesc )
572	{
573	HRESULT hr;
574
575	// Make the device available as a global variable.
576	g_pd3dDevice = pd3dDevice;
577
578	// Initialize the font
579	V_RETURN( D3DXCreateFont( pd3dDevice, 15, 0, FW_BOLD, 1, FALSE, DEFAULT_CHARSET,
580	OUT_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH \| FF_DONTCARE,
581	L"Arial", &g_pFont ) );
582
583	// Define DEBUG_VS and/or DEBUG_PS to debug vertex and/or pixel shaders with the
584	// shader debugger. In this case shaders will be unoptimized and forced into software.
585	DWORD dwShaderFlags = D3DXSHADER_PREFER_FLOW_CONTROL \| D3DXSHADER_SKIPOPTIMIZATION;
586	#ifdef DEBUG_VS
587	dwShaderFlags \|= D3DXSHADER_FORCE_VS_SOFTWARE_NOOPT;
588	#endif
589	#ifdef DEBUG_PS
590	dwShaderFlags \|= D3DXSHADER_FORCE_PS_SOFTWARE_NOOPT;
591	#endif
592
593	// Read the D3DX effect file
594	WCHAR str[MAX_PATH];
595	V_RETURN( DXUTFindDXSDKMediaFileCch( str, MAX_PATH, L"RayTraceEffects.fx" ) );
596
597	ID3DXBuffer* errBuff = NULL;
598	if (FAILED(D3DXCreateEffectFromFile( pd3dDevice, str, NULL, NULL, dwShaderFlags, NULL, &g_pEffect, &errBuff )))
599	{
600	const int BufSize = 500;
601	wchar_t wbuf[BufSize];
602	mbstowcs( wbuf, (const char*)errBuff->GetBufferPointer(), BufSize );
603	MessageBox(NULL, wbuf, L".fx compilation error", MB_ICONERROR);
604	exit(-1);
605	}
606
607
608	// --- Initialize the matrices ---------------------------------------------------------------
609
610	// World transform to identity
611	D3DXMATRIXA16 mIdent;
612	D3DXMatrixIdentity( & mIdent );
613	V_RETURN( pd3dDevice->SetTransform( D3DTS_WORLD, &mIdent ) );
614
615	// Setup the camera's view parameters
616	D3DXVECTOR3 vEyePt( -4.0f, 5.0f, -11.0f );
617	D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 0.0f );
618	g_Camera.SetViewParams( &vEyePt, &vLookatPt );
619
620	// Initialize the position of light
621	g_vLightPos = D3DXVECTOR3( 0.0f, 4.9f, -4.9f );
622
623	// For shadow mapping
624	// Set special texture matrix for shadow mapping
625	float fOffsetX = 0.5f + (0.5f / (float)SHADOWMAP_SIZE);
626	float fOffsetY = 0.5f + (0.5f / (float)SHADOWMAP_SIZE);
627	float range = 1; //note different scale in DX9!
628	//float fBias = -0.001f * range;
629	float fBias = 0.0f;
630	g_mTexScaleBiasMat = D3DXMATRIXA16( 0.5f, 0.0f, 0.0f, 0.0f,
631	0.0f, -0.5f, 0.0f, 0.0f,
632	0.0f, 0.0f, range, 0.0f,
633	fOffsetX, fOffsetY, fBias, 1.0f );
634
635
636	// The matrices must be initialized before mesh loading!
637	// --- Load objects -----------------------------------------------------------------------------------
638
639	// load default center object
640	if( FAILED( LoadMesh( SPHERE, &g_pCenterObjectMesh, true ) ) ) return DXUTERR_MEDIANOTFOUND;
641
642	// load room
643	if( FAILED( LoadMesh( ROOM, &g_pRoomMesh, false ) ) ) return DXUTERR_MEDIANOTFOUND;
644
645	// load light object
646	if( FAILED( LoadMesh( SPHERE, &g_pLightMesh, false ) ) ) return DXUTERR_MEDIANOTFOUND;
647
648	// load light object
649	if( FAILED( LoadMesh( COLUMN, &g_pColumnMesh, false ) ) ) return DXUTERR_MEDIANOTFOUND;
650
651	// --- Load objects ends ------------------------------------------------------------------------------
652
653
654	g_pRoomCubeMapColorDistTexture = CreateCubeTexture( CUBEMAP_SIZE, D3DFMT_A16B16G16R16F ); // Because 32 can not use linear filtering.
655	g_pRoomCubeMapUVTexture = CreateCubeTexture( CUBEMAP_SIZE, D3DFMT_A16B16G16R16F ); // Because 32 can not use linear filtering.
656
657	g_pShadowMapTexture = CreateTexture( SHADOWMAP_SIZE, D3DFMT_A16B16G16R16F ); // Because we use the alpha channel.
658	g_pRoomTexture = CreateTexture( ATLASMAP_SIZE, D3DFMT_A16B16G16R16F );
659	g_pRoomModifyTexture = CreateTexture( ATLASMAP_SIZE, D3DFMT_A16B16G16R16F ); // Because 32 can not use BLEND function.
660	g_pRoomLastTexture = CreateTexture( ATLASMAP_SIZE, D3DFMT_A16B16G16R16F );
661
662
663	V( g_pShadowMapTexture->GetSurfaceLevel( 0, &g_pShadowMapSurface ) );
664	V( g_pRoomTexture->GetSurfaceLevel( 0, &g_pRoomSurface ) );
665	V( g_pRoomModifyTexture->GetSurfaceLevel( 0, &g_pRoomModifySurface ) );
666	V( g_pRoomLastTexture->GetSurfaceLevel( 0, &g_pRoomLastSurface ) );
667
668
669	V( D3DXLoadSurfaceFromFile( g_pRoomSurface, NULL, NULL, L"Media\\Maps\\RoomTextMap.png", NULL, D3DX_FILTER_NONE, 0xFFFFFFFF, NULL ));
670
671	// Creates ColumnsTextureArray and surfaces. Load the original map from file to the last one.
672	// The last one is used always as a source.
673	for( int i = 0; i < 4; i++ )
674	{
675	g_pColumnModifyTexture[i] = CreateTexture( ATLASMAP_SIZE, D3DFMT_A16B16G16R16F ); // Because 32 can not use BLEND function.
676	V( g_pColumnModifyTexture[i]->GetSurfaceLevel( 0, &g_pColumnsModifySurface[i] ) );
677	}
678
679	for( int i = 0; i < 5; i++ )
680	{
681	g_pColumnLastTexture[i] = CreateTexture( ATLASMAP_SIZE, D3DFMT_A16B16G16R16F ); // Because 32 can not use BLEND function.
682	V( g_pColumnLastTexture[i]->GetSurfaceLevel( 0, &g_pColumnsLastSurface[i] ) );
683	}
684
685	D3DXLoadSurfaceFromFile( g_pColumnsLastSurface[4], NULL, NULL, L"Media\\Maps\\ColumnMap.png", NULL, D3DX_FILTER_NONE, 0xFFFFFFFF, NULL );
686
687
688	g_pShadowMapDepthStencilSSurface = CreateDepthStencilSurface( SHADOWMAP_SIZE );
689	g_pDepthStencilSurface = CreateDepthStencilSurface( ATLASMAP_SIZE );
690	g_pRoomCubeMapDepthStencilSurface = CreateDepthStencilSurface( CUBEMAP_SIZE );
691
692	// Creates Snippet Texture, and loads from file
693	D3DXCreateTextureFromFile( pd3dDevice, L"Media\\Maps\\PowerOfSnippetTexel.dds", &g_pPowerOfSnippetTexelTexture);
694
695	RenderSceneInitialization();
696
697	return S_OK;
698	}
699
700
701	//--------------------------------------------------------------------------------------
702	// LoadMesh from file
703	//--------------------------------------------------------------------------------------
704	HRESULT LoadMesh( WCHAR* strFileName, ID3DXMesh** ppMesh, bool bComputeBoundingBox )
705	{
706	ID3DXMesh* pMesh = NULL;
707	WCHAR str[MAX_PATH];
708	D3DXVECTOR3 minPos, maxPos;
709	HRESULT hr;
710
711	// Load the mesh with D3DX and get back a ID3DXMesh*. For this
712	// sample we'll ignore the X file's embedded materials since we know
713	// exactly the model we're loading. See the mesh samples such as
714	// "OptimizedMesh" for a more generic mesh loading example.
715	V_RETURN( DXUTFindDXSDKMediaFileCch( str, MAX_PATH, strFileName ) );
716	V_RETURN( D3DXLoadMeshFromX(str, D3DXMESH_MANAGED, g_pd3dDevice, NULL, NULL, NULL, NULL, &pMesh) );
717
718	if ( bComputeBoundingBox )
719	{
720	// Lock the vertex buffer, to generate a simple bounding box
721	IDirect3DVertexBuffer9* pMeshVB = NULL;
722	void* pVertices;
723	hr = pMesh->GetVertexBuffer( &pMeshVB );
724	if( SUCCEEDED( hr ) )
725	{
726	hr = pMeshVB->Lock( 0, 0, &pVertices, D3DLOCK_NOSYSLOCK );
727	if( SUCCEEDED(hr) )
728	{
729	D3DXComputeBoundingBox( ( D3DXVECTOR3*)pVertices, pMesh->GetNumVertices(),
730	D3DXGetFVFVertexSize( pMesh->GetFVF() ),
731	&minPos, &maxPos );
732	pMeshVB->Unlock();
733	}
734	pMeshVB->Release();
735
736	// If an Object was previously loaded, it removes its offset from WorldCenterObject matrix.
737	g_vCenterObjectPos += g_vCenterObjectPosInitial * g_fCenterObjectSize;
738
739	// mesh: center-size .. center+size
740	g_vCenterObjectPosInitial = ( minPos + maxPos ) / 2.0f;
741
742	// The size of the Center Object
743	D3DXVECTOR3 vCenterObjectSize = ( maxPos - minPos ) / 2.0f;
744
745	// The diameter of the center object
746	float fCenterObjectDiameter = sqrt( vCenterObjectSize.x * vCenterObjectSize.x +
747	vCenterObjectSize.y * vCenterObjectSize.y +
748	vCenterObjectSize.z * vCenterObjectSize.z ) / 1.732f;
749
750	// Center Object size
751	g_fCenterObjectSize = (float)CENTEROBJECTRADIUS / fCenterObjectDiameter;
752
753	// Eliminate the offset defined by the X file
754	//g_vCenterObjectPos = D3DXVECTOR3(0,0,0);
755	g_vCenterObjectPos -= g_vCenterObjectPosInitial * g_fCenterObjectSize;
756
757	// Center Object scale
758	g_mWorldCenterObject = ScaleAndOffset(g_fCenterObjectSize, g_vCenterObjectPos);
759	}
760	}
761
762	DWORD *rgdwAdjacency = NULL;
763
764	// Make sure there are normals which are required for lighting
765	if( !(pMesh->GetFVF() & D3DFVF_NORMAL) )
766	{
767	ID3DXMesh* pTempMesh;
768	V( pMesh->CloneMeshFVF( pMesh->GetOptions(),
769	pMesh->GetFVF() \| D3DFVF_NORMAL,
770	g_pd3dDevice, &pTempMesh ) );
771	V( D3DXComputeNormals( pTempMesh, NULL ) );
772
773	SAFE_RELEASE( pMesh );
774	pMesh = pTempMesh;
775	}
776
777	// Optimize the mesh for this graphics card's vertex cache
778	// so when rendering the mesh's triangle list the vertices will
779	// cache hit more often so it won't have to re-execute the vertex shader
780	// on those vertices so it will improve perf.
781	rgdwAdjacency = new DWORD[pMesh->GetNumFaces() * 3];
782	if( rgdwAdjacency == NULL )
783	return E_OUTOFMEMORY;
784	V( pMesh->ConvertPointRepsToAdjacency(NULL, rgdwAdjacency) );
785	V( pMesh->OptimizeInplace(D3DXMESHOPT_VERTEXCACHE, rgdwAdjacency, NULL, NULL, NULL) );
786	delete []rgdwAdjacency;
787
788	*ppMesh = pMesh;
789
790	return S_OK;
791	}
792
793	//--------------------------------------------------------------------------------------
794	// Util function.
795	// Creates an empty texture. These textures will be used as render targets, therefore
796	// the Usage flag is set to D3DUSAGE_RENDERTARGET and consequently, the assigned
797	// memory pool is D3DPOOL_DEFAULT.
798	// Params: size and format (eg. D3DFMT_A32B32G32R32F) of the new texture.
799	//--------------------------------------------------------------------------------------
800	IDirect3DTexture9* CreateTexture( int size, D3DFORMAT Format )
801	{
802	HRESULT hr;
803	IDirect3DTexture9* pTexture;
804	V( g_pd3dDevice->CreateTexture( size, size, 1, D3DUSAGE_RENDERTARGET,
805	Format, D3DPOOL_DEFAULT, &pTexture, NULL ) );
806	return pTexture;
807	}
808
809	//--------------------------------------------------------------------------------------
810	// Util function.
811	// Creates an empty cubemap texture of the given resolution and format.
812	//--------------------------------------------------------------------------------------
813
814	IDirect3DCubeTexture9* CreateCubeTexture( int size, D3DFORMAT Format )
815	{
816	HRESULT hr;
817	IDirect3DCubeTexture9* pCubeTexture;
818	V( g_pd3dDevice->CreateCubeTexture( size, 1, D3DUSAGE_RENDERTARGET,
819	Format, D3DPOOL_DEFAULT, &pCubeTexture, NULL ) );
820	return pCubeTexture;
821	}
822
823	//--------------------------------------------------------------------------------------
824	// Util function.
825	// Creates a Depth stencil surface (DSS) of the given size.
826	//--------------------------------------------------------------------------------------
827	IDirect3DSurface9* CreateDepthStencilSurface( int size )
828	{
829	HRESULT hr;
830	IDirect3DSurface9* pDSSurface;
831	V( g_pd3dDevice->CreateDepthStencilSurface( size, size,
832	DXUTGetDeviceSettings().pp.AutoDepthStencilFormat,
833	D3DMULTISAMPLE_NONE, 0, TRUE, &pDSSurface, NULL ) );
834	return pDSSurface;
835	}
836
837
838	//--------------------------------------------------------------------------------------
839	// This callback function will be called immediately after the Direct3D device has been
840	// reset, which will happen after a lost device scenario. This is the best location to
841	// create D3DPOOL_DEFAULT resources since these resources need to be reloaded whenever
842	// the device is lost. Resources created here should be released in the OnLostDevice
843	// callback.
844	//--------------------------------------------------------------------------------------
845	HRESULT CALLBACK OnResetDevice( IDirect3DDevice9* pd3dDevice,
846	const D3DSURFACE_DESC* pBackBufferSurfaceDesc )
847	{
848	HRESULT hr;
849	g_pd3dDevice = pd3dDevice;
850
851	if( g_pFont )
852	V_RETURN( g_pFont->OnResetDevice() );
853	if( g_pEffect )
854	V_RETURN( g_pEffect->OnResetDevice() );
855
856	// Create a sprite to help batch calls when drawing many lines of text
857	V_RETURN( D3DXCreateSprite( pd3dDevice, &g_pTextSprite ) );
858
859
860	// --- Vertex declarations ------------------------------------------------------------------
861
862	// Create vertex declaration for the snippets
863	V_RETURN( pd3dDevice->CreateVertexDeclaration( g_aSnippetVertex, &g_pSnippetVertexDeclaration ) );
864	CreateVertexBuffer();
865
866	// Create vertex declaration for the fullscreen quad
867	V( pd3dDevice->CreateVertexDeclaration( g_aFullScreneQuadVertex, &g_pFullScreenQuadVertexDeclaration ) );
868	V_RETURN( pd3dDevice->CreateVertexBuffer( 6 * sizeof( FullScreenQuadVertexStruct ),
869	D3DUSAGE_WRITEONLY, D3DFVF_FULLSCREENQUADVERTEX, D3DPOOL_DEFAULT, &g_pFullScreenQuadVertexBuffer, NULL ) );
870
871	void* pVertices;
872	V( g_pFullScreenQuadVertexBuffer->Lock( 0, sizeof( fullscreen ), (void**)&pVertices, 0 ) );
873	memcpy( pVertices, fullscreen, sizeof( fullscreen ) );
874	g_pFullScreenQuadVertexBuffer->Unlock();
875	// --- Vertex declarations ------------------------------------------------------------------
876
877	// Setup the camera's projection parameters
878	float fAspectRatio = pBackBufferSurfaceDesc->Width / (FLOAT)pBackBufferSurfaceDesc->Height;
879	g_Camera.SetProjParams( D3DX_PI/4, fAspectRatio, 0.1f, 1000.0f );
880	g_Camera.SetWindow( pBackBufferSurfaceDesc->Width, pBackBufferSurfaceDesc->Height );
881	g_Camera.SetButtonMasks( 0, MOUSE_WHEEL, MOUSE_LEFT_BUTTON );
882
883	g_HUD.SetLocation( 50, 0 );
884	g_HUD.SetSize( 250, 250 );
885
886	//DXUTDeviceSettings d3dSettings = DXUTGetDeviceSettings();
887	InitializeHUD();
888	RenderSceneInitialization();
889
890	return S_OK;
891	}
892
893	//--------------------------------------------------------------------------------------
894	// This callback function will be called once at the beginning of every frame. This is the
895	// best location for your application to handle updates to the scene, but is not
896	// intended to contain actual rendering calls, which should instead be placed in the
897	// OnFrameRender callback.
898	//--------------------------------------------------------------------------------------
899	void CALLBACK OnFrameMove( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime )
900	{
901	// Update the camera's position based on user input
902	g_Camera.FrameMove( fElapsedTime );
903	}
904
905	//--------------------------------------------------------------------------------------
906	// This callback function will be called at the end of every frame to perform all the
907	// rendering calls for the scene, and it will also be called if the window needs to be
908	// repainted. After this function has returned, the sample framework will call
909	// IDirect3DDevice9::Present to display the contents of the next buffer in the swap chain
910	//--------------------------------------------------------------------------------------
911	void CALLBACK OnFrameRender( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime )
912	{
913	HRESULT hr;
914	D3DXMATRIXA16 mScaleLightObjSize, mWorldViewLight, mWorldViewCausticGenerator;
915	g_pd3dDevice = pd3dDevice;
916
917	//------------------------------------------------------------------------
918	// This is an initialization. This part of the code runs just once.
919	// CubeMaps are created and basic setup is done here.
920	//------------------------------------------------------------------------
921	if ( g_bInitialization )
922	{
923	RenderSceneInitialization();
924	RenderScenePreProcessing();
925	g_bInitialization = false;
926	}
927
928	//------------------------------------------------------------------------
929	// This part of the code calculates whether the Caustics should be recalculated or not.
930	// Calculate the size of movement between the last Caustics generation and the current position
931	//------------------------------------------------------------------------
932	float fSumDist = ( abs( g_vLightPos.x - g_vLightPosLast.x ) +
933	abs( g_vLightPos.y - g_vLightPosLast.y ) +
934	abs( g_vLightPos.z - g_vLightPosLast.z ) +
935	abs( g_vCenterObjectPos.x - g_vCenterObjectPosLast.x ) +
936	abs( g_vCenterObjectPos.y - g_vCenterObjectPosLast.y ) +
937	abs( g_vCenterObjectPos.z - g_vCenterObjectPosLast.z ) );
938
939	float fEpsilon = 0.01f; // Tolerance of the max move size between two Caustics generation step
940	if ( fSumDist > fEpsilon \|\| g_bRunGenerateCaustics )
941	{
942	// If the movement is too big, or at least one property is changed
943	// the Caustic effect is recalculated
944	// Generate Caustics effect
945	GenerateCaustics();
946
947	// Refreshes Position data
948	g_vLightPosLast = g_vLightPos;
949	g_vCenterObjectPosLast = g_vCenterObjectPos;
950
951	// Turns off the Caustics Generation
952	g_bRunGenerateCaustics = false;
953	}
954
955	//------------------------------------------------------------------------
956	// This part of the code renders the visible objects in the scene.
957	//------------------------------------------------------------------------
958	D3DXMATRIXA16 mWorldCamera = *g_Camera.GetWorldMatrix();
959	D3DXMATRIXA16 mViewCamera = *g_Camera.GetViewMatrix();
960	D3DXMATRIXA16 mProjCamera = *g_Camera.GetProjMatrix();
961
962	D3DXMATRIXA16 mWorldLight = ScaleAndOffset(1, g_vLightPos);
963
964	D3DXMATRIXA16 mWorldViewCamera;
965	D3DXMatrixMultiply( &mWorldViewCamera, &mWorldCamera, &mViewCamera );
966	D3DXMatrixScaling( &mScaleLightObjSize, LIGHTRADIUS, LIGHTRADIUS, LIGHTRADIUS );
967	mWorldViewLight = mScaleLightObjSize * mWorldLight * mWorldViewCamera;
968	mWorldViewCausticGenerator = g_mWorldCenterObject * mWorldViewCamera;
969
970	V( pd3dDevice->Clear( 0L, NULL, D3DCLEAR_TARGET \| D3DCLEAR_ZBUFFER, 0x000000ff, 1.0f, 0L ) );
971
972	if( SUCCEEDED( pd3dDevice->BeginScene() ) )
973	{
974	// Renders Room and Columns objects
975	RenderScene( &mWorldViewCamera, &mProjCamera, RENDER_ROOM_AND_COLUMNS_SCREEN );
976
977	// Renders light source
978	RenderScene( &mWorldViewLight, &mProjCamera, RENDER_LIGHT_SCREEN );
979
980	// Renders CenterObject (Caustic generator)
981	RenderScene( &mWorldViewCausticGenerator, &mProjCamera, RENDER_REFRACT_OBJECT_SCREEN );
982
983	if( g_bShowPhotonMap )
984	{
985	// Renders the PhotonMap into the screen
986	RenderScene( &mWorldViewCausticGenerator, &mProjCamera, RENDER_PHOTON_MAP_SCREEN );
987	}
988
989	// Renders stats and help text
990	RenderText();
991
992	// Show HUD
993	if( g_bShowHUD ) g_HUD.OnRender( fElapsedTime );
994
995	pd3dDevice->EndScene();
996	}
997	}
998
999	// The next part will run just once ( the initialization )
1000	void RenderScenePreProcessing()
1001	{
1002	HRESULT hr;
1003
1004	D3DXMATRIXA16 mProj_90_Degrees; // projection matrix
1005	D3DXMATRIXA16 mWorldView; // worldview matrix
1006	D3DXMATRIXA16 mViewCubeMap;
1007	LPDIRECT3DSURFACE9 pCubeMapDistSurf, pCubeMapUVSurf;
1008
1009	D3DXMATRIXA16 g_mWorldCenterObjectMinus = ScaleAndOffset(1, -g_vCenterObjectPos);
1010
1011	// The projection matrix has a FOV of 90 degrees and asp ratio of 1
1012	D3DXMatrixPerspectiveFovLH( &mProj_90_Degrees, D3DX_PI * 0.5f, 1.0f, 0.001f, 1000.0f );
1013
1014	//----------------------------------------------------------------------------------------------
1015	// Saves original settings
1016	//----------------------------------------------------------------------------------------------
1017	V( g_pd3dDevice->GetRenderTarget( 0, &g_pRenderTargetSurfaceOld ) );
1018	if( SUCCEEDED( g_pd3dDevice->GetDepthStencilSurface( &g_pDepthStencilSurfaceOld ) ) )
1019	{
1020	// If the device has a depth-stencil buffer, use the depth stencil buffer created for the cube textures.
1021	V( g_pd3dDevice->SetDepthStencilSurface( g_pRoomCubeMapDepthStencilSurface ) );
1022	}
1023
1024	//----------------------------------------------------------------------------------------------
1025	// creates: CubeMap from the position of the CenterObject (RoomCubeMapColorDistanceTexture)
1026	// stores: COLOR(x,y,z) + DISTANCE(w)
1027	//----------------------------------------------------------------------------------------------
1028	for( int nFace = 0; nFace < 6; ++nFace )
1029	{
1030	V( g_pRoomCubeMapColorDistTexture->GetCubeMapSurface( (D3DCUBEMAP_FACES)nFace, 0, &pCubeMapDistSurf ) );
1031	V( g_pd3dDevice->SetRenderTarget( 0, pCubeMapDistSurf ) );
1032	V( g_pd3dDevice->Clear( 0L, NULL, D3DCLEAR_TARGET\|D3DCLEAR_ZBUFFER, 0x00000000, 1.0f, 0L ) );
1033
1034	if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )
1035	{
1036	mViewCubeMap = DXUTGetCubeMapViewMatrix( nFace );
1037	mWorldView = g_mWorldCenterObjectMinus * mViewCubeMap;
1038	RenderScene( &mWorldView, &mProj_90_Degrees, RENDER_ROOM_COLOR_DISTANCE );
1039
1040	g_pd3dDevice->EndScene();
1041	}
1042	SAFE_RELEASE( pCubeMapDistSurf );
1043	}
1044
1045	//----------------------------------------------------------------------------------------------
1046	// creates: CubeMap from the position of the CenterObject (RoomCubeMapUVTexture)
1047	// stores: UV(x,y) + ObjectID(z) + 1
1048	//----------------------------------------------------------------------------------------------
1049	for( int nFace = 0; nFace < 6; ++nFace )
1050	{
1051	V( g_pRoomCubeMapUVTexture->GetCubeMapSurface( (D3DCUBEMAP_FACES)nFace, 0, &pCubeMapUVSurf ) );
1052	V( g_pd3dDevice->SetRenderTarget( 0, pCubeMapUVSurf ) );
1053	V( g_pd3dDevice->Clear( 0L, NULL, D3DCLEAR_TARGET\|D3DCLEAR_ZBUFFER, 0x00000000, 1.0f, 0L ) );
1054
1055	if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )
1056	{
1057	mViewCubeMap = DXUTGetCubeMapViewMatrix( nFace );
1058	mWorldView = g_mWorldCenterObjectMinus * mViewCubeMap;
1059	RenderScene( &mWorldView, &mProj_90_Degrees, RENDER_ROOM_UV );
1060
1061	g_pd3dDevice->EndScene();
1062	}
1063	SAFE_RELEASE( pCubeMapUVSurf );
1064	}
1065
1066	//----------------------------------------------------------------------------------------------
1067	// Restores depth-stencil buffer and render target
1068	//----------------------------------------------------------------------------------------------
1069	if( g_pDepthStencilSurfaceOld )
1070	{
1071	V( g_pd3dDevice->SetDepthStencilSurface( g_pDepthStencilSurfaceOld ) );
1072	SAFE_RELEASE( g_pDepthStencilSurfaceOld );
1073	}
1074	V( g_pd3dDevice->SetRenderTarget( 0, g_pRenderTargetSurfaceOld ) );
1075	SAFE_RELEASE( g_pRenderTargetSurfaceOld );
1076	}
1077
1078
1079	void GenerateCaustics()
1080	{
1081	HRESULT hr;
1082
1083
1084	//----------------------------------------------------------------------------------------------
1085	// save original settings
1086	//----------------------------------------------------------------------------------------------
1087	V( g_pd3dDevice->GetRenderTarget( 0, &g_pRenderTargetSurfaceOld ) );
1088	if( SUCCEEDED( g_pd3dDevice->GetDepthStencilSurface( &g_pDepthStencilSurfaceOld ) ) )
1089	{
1090	// If the device has a depth-stencil buffer, use the depth stencil buffer created for the cube textures.
1091	V( g_pd3dDevice->SetDepthStencilSurface( g_pRoomCubeMapDepthStencilSurface ) );
1092	}
1093
1094
1095	//----------------------------------------------------------------------------------------------
1096	// creates: PhotonMap from light position
1097	// stores: UV(x,y) + ObjectID(z) + "1"
1098	//----------------------------------------------------------------------------------------------
1099
1100	// Calculate the light's worldview transformation and take picture from there
1101	D3DXVECTOR3 vUpPt( 0.0f, 1.0f, 0.0f );
1102	D3DXMatrixLookAtLH( &g_mWorldViewLight, &g_vLightPos, &g_vCenterObjectPos, &vUpPt );
1103
1104	// Calculate FOV of the light
1105	float radiusCenter = CENTEROBJECTRADIUS * 1.03f; // The radius of the CenterObject
1106
1107	D3DXVECTOR3 vDiff = g_vLightPos - g_vCenterObjectPos;
1108	float dist = sqrt ( vDiff.x * vDiff.x + // The distance between
1109	vDiff.y * vDiff.y + // light source and CenterObject
1110	vDiff.z * vDiff.z );
1111
1112	float fovLight = atan ( radiusCenter / dist ) * 2; // fov[rad]
1113
1114	D3DXMATRIXA16 mLightProj; // projection matrix for the light
1115	D3DXMatrixPerspectiveFovLH( &mLightProj, fovLight, 1.0f, 0.001f, 1000.0f );
1116
1117	// Skip this part of code if Caustic effect is not used
1118	if ( g_bCausticsON )
1119	{
1120	V( g_pd3dDevice->SetDepthStencilSurface( g_pPhotonMapDepthStencilSurface ) );
1121	V( g_pd3dDevice->SetRenderTarget( 0, g_pPhotonUVMapSurface ) );
1122	V( g_pd3dDevice->Clear( 0L, NULL, D3DCLEAR_TARGET\|D3DCLEAR_ZBUFFER, 0x00000000, 1.0f, 0L ) );
1123
1124	if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )
1125	{
1126	RenderScene( &g_mWorldViewLight, &mLightProj, RENDER_PHOTON_UV_MAP );
1127	g_pd3dDevice->EndScene();
1128	}
1129	}
1130
1131	// -- DEBUG ----------------------------------------------------------------------------------------------
1132	if( g_bSaveTexture )
1133	{
1134	D3DXSaveSurfaceToFile( L"PhotonMap.png", D3DXIFF_PNG, g_pPhotonUVMapSurface, NULL,NULL);
1135
1136	g_bSaveTexture = false;
1137	}
1138	// -- DEBUG END ----------------------------------------------------------------------------------------------
1139
1140
1141	//----------------------------------------------------------------------------------------------
1142	// creates: ShadowMap from light position
1143	// stores: Distance(x)
1144	//----------------------------------------------------------------------------------------------
1145	// Skip this part of code if Shadow is not used
1146	if ( g_bShadowON )
1147	{
1148	V( g_pd3dDevice->SetDepthStencilSurface( g_pShadowMapDepthStencilSSurface ) );
1149	V( g_pd3dDevice->SetRenderTarget( 0, g_pShadowMapSurface ) );
1150	V( g_pd3dDevice->Clear( 0L, NULL, D3DCLEAR_TARGET\|D3DCLEAR_ZBUFFER, 0x00000000, 1.0f, 0L ) );
1151
1152	// Sets depth bias to a predefined value
1153	g_pd3dDevice->SetRenderState(D3DRS_DEPTHBIAS, (DWORD)g_dDepthBias);
1154	g_pd3dDevice->SetRenderState(D3DRS_SLOPESCALEDEPTHBIAS, (DWORD)g_dBiasSlope);
1155	// The projection of the ShadowMap is 80 degree.
1156	D3DXMatrixPerspectiveFovLH( &g_mProjLight, D3DXToRadian( 80.0f ), 1.0f, 1.0f, 20.0f );
1157
1158	if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )
1159	{
1160	RenderScene( &g_mWorldViewLight, &g_mProjLight, RENDER_SHADOW );
1161	g_pd3dDevice->EndScene();
1162	}
1163
1164	// Sets back the depth bias to "0"
1165	g_pd3dDevice->SetRenderState( D3DRS_DEPTHBIAS, (DWORD)0.0f );
1166	g_pd3dDevice->SetRenderState( D3DRS_SLOPESCALEDEPTHBIAS, (DWORD)0.0f );
1167	}
1168
1169	//--------------------------------------------------------------------------------------------
1170	// creates: RoomLastTexture, and ColumnTexture[0,1,2,3]
1171	// They will be used as source textures when the Room and Columns are rendered in the visible scene
1172	// stores: Color(r,g,b,a)
1173	//--------------------------------------------------------------------------------------------
1174	D3DXMATRIXA16 mWorldViewCamera = *g_Camera.GetViewMatrix();
1175	D3DXMATRIXA16 mProjCamera = *g_Camera.GetProjMatrix();
1176
1177	// Render Room with Shadow and Caustics
1178	V( g_pd3dDevice->SetRenderTarget( 0, g_pRoomModifySurface ) );
1179	V( g_pd3dDevice->SetDepthStencilSurface( g_pDepthStencilSurface ) );
1180	V( g_pd3dDevice->Clear( 0L, NULL, D3DCLEAR_TARGET\|D3DCLEAR_ZBUFFER, 0x00000000, 1.0f, 0L ) );
1181
1182	if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )
1183	{
1184	// Renders Room with Shadow and Caustics
1185	g_iObjectID = -1; // The ID of the Room Object = -1
1186	RenderScene( &mWorldViewCamera, &mProjCamera, RENDER_UMBRA );
1187	if ( g_bCausticsON )
1188	RenderScene( &mWorldViewCamera, &mProjCamera, RENDER_PHOTON_HIT );
1189	g_pd3dDevice->EndScene();
1190	}
1191
1192	V( g_pd3dDevice->SetRenderTarget( 0, g_pRoomLastSurface ) );
1193	V( g_pd3dDevice->Clear( 0L, NULL, D3DCLEAR_TARGET\|D3DCLEAR_ZBUFFER, 0x00000000, 1.0f, 0L ) );
1194
1195	if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )
1196	{
1197	// Removes the black edges. Enlarges the usefull content of the atlas with one texel
1198	RenderScene( &mWorldViewCamera, &mProjCamera, RENDER_FULLSCREENQUAD );
1199	g_pd3dDevice->EndScene();
1200	}
1201
1202	// Renders Columns with Shadow and Caustics
1203	for (int i = 0; i < 4; i++)
1204	{
1205	// Renders one Column with Shadow and Caustics
1206	V( g_pd3dDevice->SetRenderTarget( 0, g_pColumnsModifySurface[i] ) );
1207	V( g_pd3dDevice->Clear( 0L, NULL, D3DCLEAR_TARGET\|D3DCLEAR_ZBUFFER, 0x00000000, 1.0f, 0L ) );
1208
1209	if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )
1210	{
1211	g_iObjectID = i; // The ID of a Column
1212	RenderScene( &mWorldViewCamera, &mProjCamera, RENDER_UMBRA );
1213	if ( g_bCausticsON )
1214	RenderScene( &mWorldViewCamera, &mProjCamera, RENDER_PHOTON_HIT );
1215	g_pd3dDevice->EndScene();
1216	}
1217
1218	V( g_pd3dDevice->SetRenderTarget( 0, g_pColumnsLastSurface[i] ) );
1219	V( g_pd3dDevice->Clear( 0L, NULL, D3DCLEAR_TARGET\|D3DCLEAR_ZBUFFER, 0x00000000, 1.0f, 0L ) );
1220
1221	if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )
1222	{
1223	// Removes the black edges. Enlarges the usefull content of the atlas with one texel
1224	RenderScene( &mWorldViewCamera, &mProjCamera, RENDER_FULLSCREENQUAD );
1225	g_pd3dDevice->EndScene();
1226	}
1227	}
1228
1229	/*
1230
1231	// -- DEBUG ----------------------------------------------------------------------------------------------
1232	if( g_bSaveTexture )
1233	{
1234	D3DXSaveSurfaceToFile( L"RoomMod.png", D3DXIFF_PNG, g_pRoomModifySurface, NULL,NULL);
1235	D3DXSaveSurfaceToFile( L"RoomLast.png", D3DXIFF_PNG, g_pRoomLastSurface, NULL,NULL);
1236
1237	D3DXSaveSurfaceToFile( L"ColumnMod0.png", D3DXIFF_PNG, g_pColumnsModifySurface[0], NULL,NULL);
1238	//D3DXSaveSurfaceToFile( L"ColumnMod1.png", D3DXIFF_PNG, g_pColumnsModifySurface[1], NULL,NULL);
1239	//D3DXSaveSurfaceToFile( L"ColumnMod2.png", D3DXIFF_PNG, g_pColumnsModifySurface[2], NULL,NULL);
1240	//D3DXSaveSurfaceToFile( L"ColumnMod3.png", D3DXIFF_PNG, g_pColumnsModifySurface[3], NULL,NULL);
1241
1242	D3DXSaveSurfaceToFile( L"ColumnLast0.png", D3DXIFF_PNG, g_pColumnsLastSurface[0], NULL,NULL);
1243	//D3DXSaveSurfaceToFile( L"ColumnLast1.png", D3DXIFF_PNG, g_pColumnsLastSurface[1], NULL,NULL);
1244	//D3DXSaveSurfaceToFile( L"ColumnLast2.png", D3DXIFF_PNG, g_pColumnsLastSurface[2], NULL,NULL);
1245	//D3DXSaveSurfaceToFile( L"ColumnLast3.png", D3DXIFF_PNG, g_pColumnsLastSurface[3], NULL,NULL);
1246
1247	g_bSaveTexture = false;
1248	}
1249	// -- DEBUG END ----------------------------------------------------------------------------------------------
1250	*/
1251
1252	//----------------------------------------------------------------------
1253	// Restores depth-stencil buffer and render target
1254	//---------------------------------------------------------------------
1255	if( g_pDepthStencilSurfaceOld )
1256	{
1257	V( g_pd3dDevice->SetDepthStencilSurface( g_pDepthStencilSurfaceOld ) );
1258	SAFE_RELEASE( g_pDepthStencilSurfaceOld );
1259	}
1260	V( g_pd3dDevice->SetRenderTarget( 0, g_pRenderTargetSurfaceOld ) );
1261	SAFE_RELEASE( g_pRenderTargetSurfaceOld );
1262	}
1263
1264
1265	// Sends texture parameters to the GPU.
1266	void RenderSceneInitialization()
1267	{
1268	HRESULT hr;
1269
1270	// Bind textures
1271	V( g_pEffect->SetTexture( "g_txRoomMap", g_pRoomTexture ) );
1272	V( g_pEffect->SetTexture( "g_txRoomCubeMapColorDistanceMap", g_pRoomCubeMapColorDistTexture ) );
1273	V( g_pEffect->SetTexture( "g_txRoomCubeMapUVMap", g_pRoomCubeMapUVTexture ) );
1274	V( g_pEffect->SetTexture( "g_txRoomModifyMap", g_pRoomModifyTexture ) );
1275	V( g_pEffect->SetTexture( "g_txRoomLastMap", g_pRoomLastTexture ) );
1276
1277	V( g_pEffect->SetTexture( "g_txPhotonUVMap", g_pPhotonUVTexture ) );
1278	V( g_pEffect->SetTexture( "g_txPowerOfSnippetMap", g_pPowerOfSnippetTexelTexture ) );
1279
1280	V( g_pEffect->SetTexture( "g_txColumnModifyTexture0", g_pColumnModifyTexture[0] ) );
1281	V( g_pEffect->SetTexture( "g_txColumnModifyTexture1", g_pColumnModifyTexture[1] ) );
1282	V( g_pEffect->SetTexture( "g_txColumnModifyTexture2", g_pColumnModifyTexture[2] ) );
1283	V( g_pEffect->SetTexture( "g_txColumnModifyTexture3", g_pColumnModifyTexture[3] ) );
1284	V( g_pEffect->SetTexture( "g_txColumnLastTexture0", g_pColumnLastTexture[0] ) );
1285	V( g_pEffect->SetTexture( "g_txColumnLastTexture1", g_pColumnLastTexture[1] ) );
1286	V( g_pEffect->SetTexture( "g_txColumnLastTexture2", g_pColumnLastTexture[2] ) );
1287	V( g_pEffect->SetTexture( "g_txColumnLastTexture3", g_pColumnLastTexture[3] ) );
1288	V( g_pEffect->SetTexture( "g_txColumnOriginalTexture", g_pColumnLastTexture[4] ) );
1289
1290	V( g_pEffect->SetTexture( "g_txShadowMap", g_pShadowMapTexture ) );
1291	}
1292
1293
1294	// This function renders the Room mesh.
1295	void RenderRoom(D3DXMATRIXA16 mWorldView, D3DXMATRIXA16 mProj)
1296	{
1297	HRESULT hr;
1298	D3DXMATRIXA16 mWorldViewProjection;
1299
1300	V( g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_CW ) );
1301
1302	D3DXMatrixMultiply( &mWorldViewProjection, mWorldView, mProj );
1303	V( g_pEffect->SetMatrix( "g_mWorldView", mWorldView ) );
1304	V( g_pEffect->SetMatrix( "g_mWorldViewProjection", &mWorldViewProjection ) );
1305	V( g_pEffect->SetMatrix( "g_mLightViewTexBias", &mWorldViewProjection ) );
1306	V( g_pEffect->SetInt( "g_iObjectID", -1 ) );
1307	V( g_pEffect->CommitChanges() );
1308
1309	V( g_pRoomMesh->DrawSubset( 0 ) );
1310
1311	V( g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_CCW ) );
1312	}
1313
1314
1315	// This function renders the Columns mesh.
1316	void RenderColumns(D3DXMATRIXA16 mWorldView, D3DXMATRIXA16 mProj)
1317	{
1318	HRESULT hr;
1319	D3DXMATRIXA16 mWorldOffset, mWorldViewProjection;
1320
1321	for (int i = 0; i < 4; i++)
1322	{
1323	if (i==0) D3DXMatrixTranslation( &mWorldOffset, 3.75f ,0 , 3.75f );
1324	if (i==1) D3DXMatrixTranslation( &mWorldOffset, -3.75f ,0 , 3.75f );
1325	if (i==2) D3DXMatrixTranslation( &mWorldOffset, 3.75f ,0 ,-3.75f );
1326	if (i==3) D3DXMatrixTranslation( &mWorldOffset, -3.75f ,0 ,-3.75f );
1327	D3DXMatrixMultiply( &mWorldOffset, &mWorldOffset, mWorldView);
1328	D3DXMatrixMultiply( &mWorldViewProjection, &mWorldOffset, mProj);
1329
1330	V( g_pEffect->SetMatrix( "g_mWorldView", &mWorldOffset ) );
1331	V( g_pEffect->SetMatrix( "g_mWorldViewProjection", &mWorldViewProjection ) );
1332	V( g_pEffect->SetMatrix( "g_mLightViewTexBias", &mWorldViewProjection ) );
1333	V( g_pEffect->SetInt( "g_iObjectID", i ) );
1334	V( g_pEffect->CommitChanges() );
1335
1336	V( g_pColumnMesh->DrawSubset( 0 ) );
1337	}
1338	}
1339
1340	// Sets the techniques.
1341	// Calculates and sends parameters to the GPU.
1342	void RenderScene(D3DXMATRIXA16 mWorldView, D3DXMATRIXA16 mProj, int method )
1343	{
1344	HRESULT hr;
1345	UINT cPass;
1346	D3DXMATRIXA16 mWorldViewProjection, mWorldOffset;
1347
1348	D3DXMatrixMultiply( &mWorldViewProjection, mWorldView, mProj );
1349	V( g_pEffect->SetMatrix( "g_mWorldViewProjection", &mWorldViewProjection ) );
1350	V( g_pEffect->SetMatrix( "g_mWorldView", mWorldView ) );
1351
1352	V( g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_CW ) );
1353
1354
1355	//----------------------------------------------------------------------
1356	// It renders Room and Columns from the CenterObject position
1357	// and stores them in a CubeMap: g_pRoomCubeMapColorDistTexture.
1358	// Contains: COLOR(x,y,z) + Distance(w)
1359	//----------------------------------------------------------------------
1360	if ( method == RENDER_ROOM_COLOR_DISTANCE )
1361	{
1362	V( g_pEffect->SetTechnique( "RenderRoomColorDistance" ) );
1363	V( g_pEffect->Begin( &cPass, 0 ) );
1364	V( g_pEffect->BeginPass( 0 ) );
1365
1366	// Render Room
1367	RenderRoom( mWorldView, mProj );
1368
1369	// Render Columns
1370	RenderColumns( mWorldView, mProj );
1371
1372	V( g_pEffect->EndPass() );
1373	V( g_pEffect->End() );
1374	}
1375
1376
1377	//----------------------------------------------------------------------
1378	// It renders Room and Columns from the center object position
1379	// and stores them in a CubeMap: g_pRoomCubeMapUVTexture.
1380	// Contains: UV(x,y) + ObjectID(z) + "1"
1381	//----------------------------------------------------------------------
1382	if ( method == RENDER_ROOM_UV )
1383	{
1384	V( g_pEffect->SetTechnique( "RenderRoomUV" ) );
1385	V( g_pEffect->Begin( &cPass, 0 ) );
1386	V( g_pEffect->BeginPass( 0 ) );
1387
1388	// Render Room
1389	RenderRoom( mWorldView, mProj );
1390
1391	// Render Columns
1392	RenderColumns( mWorldView, mProj );
1393
1394	V( g_pEffect->EndPass() );
1395	V( g_pEffect->End() );
1396	}
1397
1398
1399	//----------------------------------------------------------------------
1400	// It renders Room and Columns from the center object position
1401	// and stores them in their Atlases.
1402	// Contains: Color(r,g,b,a )
1403	//----------------------------------------------------------------------
1404	if ( method == RENDER_UMBRA )
1405	{
1406	V( g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_CCW ) );
1407
1408	V( g_pEffect->SetTechnique( "RenderUmbra" ) );
1409	V( g_pEffect->Begin( &cPass, 0 ) );
1410
1411	g_mLightViewTexBias = g_mWorldViewLight * g_mProjLight * g_mTexScaleBiasMat;
1412	V( g_pEffect->SetMatrix( "g_mLightViewTexBias", &g_mLightViewTexBias ) );
1413	V( g_pEffect->SetBool( "g_bShadowON", g_bShadowON ) );
1414	V( g_pEffect->SetBool( "g_bShowHelp", g_bShowHelp ) );
1415	V( g_pEffect->SetFloatArray( "g_vLightPos3f", g_vLightPos, 3 ) );
1416	V( g_pEffect->SetFloat( "g_fShadowIntensity", 1-g_fShadowIntensity ));
1417	V( g_pEffect->SetFloat( "g_fCausticsIntensity", g_fCausticsIntensity ));
1418
1419	V( g_pEffect->BeginPass( 0 ) );
1420	if (g_iObjectID == -1)
1421	{
1422	// Render Room
1423	V( g_pEffect->SetInt( "g_iObjectID", -1 ) );
1424	V( g_pEffect->CommitChanges() );
1425	V( g_pRoomMesh->DrawSubset( 0 ) );
1426	} else
1427	{
1428	// Render Columns
1429	if (g_iObjectID==0) D3DXMatrixTranslation( &mWorldOffset, 3.75f ,0 , 3.75f );
1430	if (g_iObjectID==1) D3DXMatrixTranslation( &mWorldOffset, -3.75f ,0 , 3.75f );
1431	if (g_iObjectID==2) D3DXMatrixTranslation( &mWorldOffset, 3.75f ,0 ,-3.75f );
1432	if (g_iObjectID==3) D3DXMatrixTranslation( &mWorldOffset, -3.75f ,0 ,-3.75f );
1433	V( g_pEffect->SetMatrix( "g_mWorldView", &mWorldOffset ) );
1434	V( g_pEffect->SetInt( "g_iObjectID", g_iObjectID ) );
1435	V( g_pEffect->CommitChanges() );
1436	V( g_pColumnMesh->DrawSubset( 0 ) );
1437	}
1438	V( g_pEffect->EndPass() );
1439	V( g_pEffect->End() );
1440	}
1441
1442
1443	//----------------------------------------------------------------------
1444	// It renders Room and Columns from the camera position
1445	// and shows them on the screen.
1446	// Contains: Color(r,g,b,a)
1447	//----------------------------------------------------------------------
1448	if ( method == RENDER_ROOM_AND_COLUMNS_SCREEN )
1449	{
1450	V( g_pEffect->SetTechnique( "RenderRoomAndColumnsScreen" ) );
1451	V( g_pEffect->Begin( &cPass, 0 ) );
1452	V( g_pEffect->BeginPass( 0 ) );
1453
1454	// Render Room
1455	RenderRoom( mWorldView, mProj );
1456
1457	// Render Columns
1458	RenderColumns( mWorldView, mProj );
1459
1460	V( g_pEffect->EndPass() );
1461	V( g_pEffect->End() );
1462	}
1463
1464
1465	//----------------------------------------------------------------------
1466	// It renders CenterObject from the light position
1467	// and stores it in g_pPhotonUVTexture.
1468	// Contains: UV(x,y) + ObjectID(1) + "1" or "-1"
1469	//----------------------------------------------------------------------
1470	if ( method == RENDER_PHOTON_UV_MAP )
1471	{
1472	V( g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_CCW ) );
1473
1474	if( g_iAlgorithmMethod == 0 )
1475	// Uses classic method
1476	V( g_pEffect->SetTechnique( "RenderPhotonUVMapClassic" ) );
1477	if( g_iAlgorithmMethod == 1 )
1478	// Uses distance impostor
1479	V( g_pEffect->SetTechnique( "RenderPhotonUVMap" ) );
1480
1481	D3DXMatrixMultiply( &mWorldViewProjection, mWorldView, mProj );
1482	D3DXMatrixMultiply( &mWorldViewProjection, &g_mWorldCenterObject, &mWorldViewProjection );
1483	V( g_pEffect->SetMatrix( "g_mWorldViewProjection", &mWorldViewProjection ) );
1484	V( g_pEffect->SetMatrix( "g_mWorldCenterObject", &g_mWorldCenterObject ) );
1485	V( g_pEffect->SetFloatArray( "g_vLightPos3f", g_vLightPos, 3 ) );
1486	V( g_pEffect->SetInt( "g_iNumberOfIteration", g_iNumberOfIteration) );
1487	V( g_pEffect->SetInt( "g_iPhotonMapSize", g_iPhotonMapSize) );
1488	V( g_pEffect->SetFloat( "g_fRefractionIndex", g_fRefractionIndex ) );
1489
1490	V( g_pEffect->Begin( &cPass, 0 ) );
1491	V( g_pEffect->BeginPass( 0 ) );
1492	V( g_pEffect->CommitChanges() );
1493
1494	V( g_pCenterObjectMesh->DrawSubset( 0 ) );
1495
1496	V( g_pEffect->EndPass() );
1497	V( g_pEffect->End() );
1498	}
1499
1500
1501	//----------------------------------------------------------------------
1502	// It renders CenterObject from the camera position
1503	// and shows it on the screen.
1504	// Contains: Color(r,g,b,a)
1505	//----------------------------------------------------------------------
1506	if ( method == RENDER_REFRACT_OBJECT_SCREEN )
1507	{
1508	V( g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_CCW ) );
1509
1510	if( g_bRenderCenterObjectWithBrdfON )
1511	{
1512	if( g_iAlgorithmMethod == 0 )
1513	// Uses classic method
1514	V( g_pEffect->SetTechnique( "RenderRefractObjectScreenClassic" ) );
1515	if( g_iAlgorithmMethod == 1 )
1516	// Uses distance impostor
1517	V( g_pEffect->SetTechnique( "RenderRefractObjectScreen" ) );
1518	}
1519	else
1520	// Uses diffuse color
1521	V( g_pEffect->SetTechnique( "RenderLightScreen" ) );
1522
1523	V( g_pEffect->Begin( &cPass, 0 ) );
1524
1525	D3DXVECTOR3 vWorldCameraEye = *g_Camera.GetEyePt();
1526
1527	V( g_pEffect->SetMatrix( "g_mWorldCenterObject", &g_mWorldCenterObject ) );
1528	V( g_pEffect->SetFloatArray( "g_vCameraPos3f", vWorldCameraEye, 3 ) );
1529	V( g_pEffect->SetInt( "g_iNumberOfIteration", g_iNumberOfIteration));
1530	V( g_pEffect->SetFloat( "g_fFresnelFactor", g_fFresnelFactor));
1531	V( g_pEffect->SetFloat( "g_fRefractionIndex", g_fRefractionIndex ));
1532
1533	V( g_pEffect->BeginPass( 0 ) );
1534	V( g_pEffect->CommitChanges() );
1535	V( g_pCenterObjectMesh->DrawSubset( 0 ) );
1536	V( g_pEffect->EndPass() );
1537	V( g_pEffect->End() );
1538	}
1539
1540
1541	//----------------------------------------------------------------------
1542	// It renders and blends impostors into the Atlases of Room and Columns
1543	// Contains: Color(r,g,b,a)
1544	//----------------------------------------------------------------------
1545	if ( method == RENDER_PHOTON_HIT )
1546	{
1547	V( g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_CCW ) );
1548
1549	g_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_ONE);
1550	g_pd3dDevice->SetRenderState(D3DRS_DESTBLEND,D3DBLEND_ONE);
1551	g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, true);
1552	g_pd3dDevice->SetRenderState(D3DRS_ALPHATESTENABLE, false);
1553
1554	V( g_pEffect->SetTechnique( "RenderPhotonHit" ) );
1555	V( g_pEffect->Begin( &cPass, 0 ) );
1556
1557	float x = g_vLightPos.x - g_vCenterObjectPos.x;
1558	float y = g_vLightPos.y - g_vCenterObjectPos.y;
1559	float z = g_vLightPos.z - g_vCenterObjectPos.z;
1560	float gll2 = x * x + y * y + z * z;
1561
1562
1563	//float POWER = CENTEROBJECTRADIUS * CENTEROBJECTRADIUS / 10;//45 * CENTEROBJECTRADIUS * CENTEROBJECTRADIUS * 4 / (SNIPPET_SIZE * SNIPPET_SIZE);
1564	//float POWER = 45 * CENTEROBJECTRADIUS * CENTEROBJECTRADIUS * 4 / (g_iPhotonMapSize * g_iPhotonMapSize);
1565	//float POWER = 45 * CENTEROBJECTRADIUS * CENTEROBJECTRADIUS * 4 / g_iPhotonMapSize;
1566
1567	// Determines the exponent of the PhotonMap size.
1568	// It is used as an index to look up from g_fIntensityOfSnippet array.
1569	int iPhotonMapSizeExponent = (int)( log( (float)g_iPhotonMapSize ) / log ( 2.0f ) + 0.5 ); // 0..8
1570
1571	// By default the fSnippetSize is not constant in world space
1572	float fSnippetIntensity = g_fIntensityOfSnippet[ iPhotonMapSizeExponent ];
1573	if( g_bSnippetSizeIsConstant ) // if it is constant
1574	fSnippetIntensity = g_fIntensityOfSnippetWithIndependentSnippetSize[ iPhotonMapSizeExponent ];
1575
1576	// The intensity value of one snippet
1577	float POWER = 10 * CENTEROBJECTRADIUS * CENTEROBJECTRADIUS /
1578	( g_fSnippetSize * g_fSnippetSize *
1579	fSnippetIntensity * fSnippetIntensity );
1580
1581	V( g_pEffect->BeginPass( 0 ) );
1582	V( g_pEffect->SetInt( "g_iObjectID", g_iObjectID ) );
1583	V( g_pEffect->SetFloat( "g_fPower", POWER / gll2 ) );
1584	V( g_pEffect->SetFloat( "g_fCausticsIntensity", g_fCausticsIntensity ) );
1585	V( g_pEffect->CommitChanges() );
1586	V( g_pd3dDevice->SetVertexDeclaration( g_pSnippetVertexDeclaration ) );
1587	V( g_pd3dDevice->SetStreamSource( 0, g_bSnippetVertexBuffer, 0, (sizeof(float)* 9 ) ) );
1588	V( g_pd3dDevice->DrawPrimitive( D3DPT_TRIANGLELIST, 0, ( g_iPhotonMapSize * g_iPhotonMapSize * 2 ) ) );
1589	V( g_pEffect->EndPass() );
1590	V( g_pEffect->End() );
1591
1592	g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, false);
1593	}
1594
1595
1596	//----------------------------------------------------------------------
1597	// It renders Light Object from the camera position
1598	// and shows it on the screen.
1599	// Contains: Color(r,g,b,a)
1600	//----------------------------------------------------------------------
1601	if ( method == RENDER_LIGHT_SCREEN )
1602	{
1603	V( g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE ) );
1604
1605	V( g_pEffect->SetTechnique( "RenderLightScreen" ) );
1606	V( g_pEffect->Begin( &cPass, 0 ) );
1607	V( g_pEffect->BeginPass( 0 ) );
1608	V( g_pEffect->CommitChanges() );
1609
1610	V( g_pLightMesh->DrawSubset( 0 ) );
1611
1612	V( g_pEffect->EndPass() );
1613	V( g_pEffect->End() );
1614	}
1615
1616
1617	//----------------------------------------------------------------------
1618	// It renders CenterObject, Columns and Room from light position
1619	// and stores them in g_pShadowMapTexture.
1620	// Contains: Depth(x)
1621	//----------------------------------------------------------------------
1622	if ( method == RENDER_SHADOW )
1623	{
1624	V( g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE ) );
1625
1626	V( g_pEffect->SetTechnique( "RenderShadow" ) );
1627
1628	D3DXMatrixMultiply( &mWorldViewProjection, &g_mWorldCenterObject, &mWorldViewProjection );
1629	V( g_pEffect->SetMatrix( "g_mWorldViewProjection", &mWorldViewProjection ) );
1630	V( g_pEffect->SetMatrix( "g_mLightViewTexBias", &mWorldViewProjection ) );
1631
1632	V( g_pEffect->Begin( &cPass, 0 ) );
1633	V( g_pEffect->BeginPass( 0 ) );
1634
1635	// Render CenterObject
1636	V( g_pEffect->CommitChanges() );
1637	V( g_pCenterObjectMesh->DrawSubset( 0 ) );
1638
1639	// Render Columns
1640	RenderColumns( mWorldView, mProj );
1641
1642	// Render Room
1643	RenderRoom( mWorldView, mProj );
1644
1645	V( g_pEffect->EndPass() );
1646	V( g_pEffect->End() );
1647	}
1648
1649	//----------------------------------------------------------------------
1650	// It renders a fullscreen quad
1651	// and modifies the Room and Columns atlases.
1652	// Contains: Color(r,g,b,a)
1653	//----------------------------------------------------------------------
1654	if ( method == RENDER_FULLSCREENQUAD )
1655	{
1656	V( g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE ) );
1657
1658	V( g_pEffect->SetTechnique( "FullScreenQuad" ) );
1659	V( g_pEffect->Begin( &cPass, 0 ) );
1660	V( g_pEffect->BeginPass( 0 ) );
1661
1662	V( g_pEffect->SetInt( "g_iObjectID", g_iObjectID ) );
1663	V( g_pEffect->CommitChanges() );
1664
1665	V( g_pd3dDevice->SetVertexDeclaration( g_pFullScreenQuadVertexDeclaration ) );
1666	V( g_pd3dDevice->SetStreamSource( 0, g_pFullScreenQuadVertexBuffer, 0, sizeof(FullScreenQuadVertexStruct) ) );
1667	V( g_pd3dDevice->DrawPrimitive( D3DPT_TRIANGLELIST, 0, 2 ) );
1668
1669	V( g_pEffect->EndPass() );
1670	V( g_pEffect->End() );
1671	}
1672
1673	if ( method == RENDER_PHOTON_MAP_SCREEN )
1674	{
1675	V( g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE ) );
1676
1677	V( g_pEffect->SetTechnique( "PhotonMapScreen" ) );
1678	V( g_pEffect->Begin( &cPass, 0 ) );
1679	V( g_pEffect->BeginPass( 0 ) );
1680	V( g_pEffect->CommitChanges() );
1681
1682	V( g_pd3dDevice->SetVertexDeclaration( g_pFullScreenQuadVertexDeclaration ) );
1683	V( g_pd3dDevice->SetStreamSource( 0, g_pFullScreenQuadVertexBuffer, 0, sizeof(FullScreenQuadVertexStruct) ) );
1684	V( g_pd3dDevice->DrawPrimitive( D3DPT_TRIANGLELIST, 0, 2 ) );
1685
1686	V( g_pEffect->EndPass() );
1687	V( g_pEffect->End() );
1688	}
1689	}
1690
1691	//--------------------------------------------------------------------------------------
1692	// Render the help and statistics text. This function uses the ID3DXFont interface for
1693	// efficient text rendering.
1694	//--------------------------------------------------------------------------------------
1695	void RenderText()
1696	{
1697	// The helper object simply helps keep track of text position, and color
1698	// and then it calls pFont->DrawText( m_pSprite, strMsg, -1, &rc, DT_NOCLIP, m_clr );
1699	// If NULL is passed in as the sprite object, then it will work however the
1700	// pFont->DrawText() will not be batched together. Batching calls will improves performance.
1701	const D3DSURFACE_DESC* pd3dsdBackBuffer = DXUTGetBackBufferSurfaceDesc();
1702	CDXUTTextHelper txtHelper( g_pFont, g_pTextSprite, 16 );
1703
1704	// Output statistics
1705	txtHelper.Begin();
1706	txtHelper.SetInsertionPos( 10, 5 );
1707	txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 1.0f, 1.0f ) );
1708
1709	/*TCHAR sz[50];
1710	sz[49] = 0;
1711	_sntprintf( sz, 50, L"%.2f fps", DXUTGetFPS() );
1712	txtHelper.DrawTextLine( sz );*/
1713
1714	txtHelper.DrawTextLine( DXUTGetFrameStats() );
1715	//txtHelper.DrawTextLine( DXUTGetDeviceStats() );
1716
1717	if (!g_bShowHelp)
1718	txtHelper.DrawTextLine( L"Press F1 for help" );
1719
1720	// Show algorithm's parameters
1721	if ( g_bShowVariables )
1722	{
1723	txtHelper.SetInsertionPos( 200, 50 );
1724
1725	txtHelper.DrawTextLine( L"Number of iteration" );
1726	txtHelper.DrawTextLine( L"Fresnel factor" );
1727	txtHelper.DrawTextLine( L"Refraction index" );
1728	txtHelper.DrawTextLine( L"Shadow intensity" );
1729	txtHelper.DrawTextLine( L"Caustics intensity" );
1730	txtHelper.DrawTextLine( L"PhotonMap size" );
1731	txtHelper.DrawTextLine( L"Snippet size" );
1732
1733	txtHelper.SetInsertionPos( 330, 50 );
1734
1735	TCHAR sz0[50], sz1[50], sz2[50], sz3[50], sz4[50], sz5[50], sz6[50];
1736	sz0[49] = sz1[49] = sz2[49] = sz3[49] = sz4[49] = sz5[49] = sz6[49] = 0;
1737
1738	_sntprintf( sz0, 50, L"%i", g_iNumberOfIteration );
1739	_sntprintf( sz1, 50, L"%.2f", g_fFresnelFactor );
1740	_sntprintf( sz2, 50, L"%.2f", g_fRefractionIndex );
1741	_sntprintf( sz3, 50, L"%.2f", g_fShadowIntensity );
1742	_sntprintf( sz4, 50, L"%.2f", g_fCausticsIntensity );
1743	_sntprintf( sz5, 50, L"%i", g_iPhotonMapSize );
1744	_sntprintf( sz6, 50, L"%.2f", g_fSnippetSize );
1745
1746	txtHelper.DrawTextLine( sz0 );
1747	txtHelper.DrawTextLine( sz1 );
1748	txtHelper.DrawTextLine( sz2 );
1749	txtHelper.DrawTextLine( sz3 );
1750	txtHelper.DrawTextLine( sz4 );
1751	txtHelper.DrawTextLine( sz5 );
1752	txtHelper.DrawTextLine( sz6 );
1753	}
1754
1755	// Draw help
1756	if ( g_bShowHelp )
1757	{
1758	const D3DSURFACE_DESC* backBufferDesc = DXUTGetBackBufferSurfaceDesc();
1759	txtHelper.SetInsertionPos( backBufferDesc->Width - 220, backBufferDesc->Height-24 * 16 );
1760
1761	txtHelper.DrawTextLine(
1762	L"Controls (F1 to hide):\n\n"
1763	L"____________________________\n"
1764	L" GENERAL CONTROLS\n"
1765	L"Left click drag: Rotate mesh\n"
1766	L"Mouse wheel: Zoom\n"
1767	L"Arrow keys: Move center object\n"
1768	L"Alt+Arrow keys: Move light object\n"
1769	L"F2: Settings\n"
1770	L"F3: Switch to REF device\n"
1771	L"F4: Show parameters ON/OFF\n"
1772	L"F5: Show HUD ON/OFF\n"
1773	L"F8: Switch to Wireframe mode\n"
1774	L"____________________________\n"
1775	L" ALGORITHM\n"
1776	L"1-5: Choose mesh\n"
1777	L"C: Caustics Effect ON/OFF\n"
1778	L"S: Shadow ON/OFF\n"
1779	L"X: Center Objectum render ON/OFF\n"
1780	L"D: Switch classic / dist. imp. meth.\n"
1781	L"Y: Reset parameters\n"
1782	L"V: Indep. Snippet size?\n"
1783	L"M: Show PhotonMap ON/OFF\n"
1784	L"____________________________\n"
1785	L" Quit: ESC");
1786
1787	if( g_bShowHUD )
1788	txtHelper.SetInsertionPos( 540, 50 );
1789	else
1790	txtHelper.SetInsertionPos( 370, 50 );
1791
1792	if ( g_bShowVariables )
1793	{
1794	txtHelper.DrawTextLine( L"Key: +, -" );
1795	txtHelper.DrawTextLine( L"Key: Q, W" );
1796	txtHelper.DrawTextLine( L"Key: E, R" );
1797	txtHelper.DrawTextLine( L"Key: T, Z" );
1798	txtHelper.DrawTextLine( L"Key: U, I" );
1799	txtHelper.DrawTextLine( L"Key: O, P" );
1800	txtHelper.DrawTextLine( L"Key: K, L" );
1801	txtHelper.DrawTextLine( L"+ 'Alt' key:");
1802	txtHelper.DrawTextLine( L" quick change" );
1803	}
1804	}
1805
1806	// Draws the title of the PhotonMap
1807	if ( g_bShowPhotonMap )
1808	{
1809	const D3DSURFACE_DESC* backBufferDesc = DXUTGetBackBufferSurfaceDesc();
1810	txtHelper.SetInsertionPos( 65, backBufferDesc->Height - 180 );
1811	txtHelper.DrawTextLine( L"PhotonMap" );
1812	}
1813
1814	txtHelper.End();
1815	}
1816
1817
1818	//--------------------------------------------------------------------------------------
1819	// Before handling window messages, the sample framework passes incoming windows
1820	// messages to the application through this callback function. If the application sets
1821	// *pbNoFurtherProcessing to TRUE, then the sample framework will not process this message.
1822	//--------------------------------------------------------------------------------------
1823	LRESULT CALLBACK MsgProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, bool* pbNoFurtherProcessing )
1824	{
1825	// Give the dialogs a chance to handle the message first
1826	*pbNoFurtherProcessing = g_HUD.MsgProc( hWnd, uMsg, wParam, lParam );
1827	if( *pbNoFurtherProcessing )
1828	return 0;
1829
1830	// Pass all remaining windows messages to camera so it can respond to user input
1831	g_Camera.HandleMessages( hWnd, uMsg, wParam, lParam );
1832
1833	return 0;
1834	}
1835
1836
1837	//--------------------------------------------------------------------------------------
1838	// As a convenience, the sample framework inspects the incoming windows messages for
1839	// keystroke messages and decodes the message parameters to pass relevant keyboard
1840	// messages to the application. The framework does not remove the underlying keystroke
1841	// messages, which are still passed to the application's MsgProc callback.
1842	//--------------------------------------------------------------------------------------
1843	void CALLBACK KeyboardProc( UINT nChar, bool bKeyDown, bool bAltDown )
1844	{
1845	HRESULT hr;
1846	D3DXVECTOR3 movement(0,0,0);
1847
1848	if( bKeyDown )
1849	{
1850	switch( nChar )
1851	{
1852	// Save Objects Last Texture Atlas
1853	case 'A':
1854	g_bSaveTexture = true;
1855	g_bRunGenerateCaustics = true;
1856	break;
1857
1858	// Show Help
1859	case VK_F1:
1860	g_bShowHelp = !g_bShowHelp;
1861	if (!g_bShowVariablesUserSet) g_bShowVariables = g_bShowHelp \|\| g_bShowHUD;
1862	g_bRunGenerateCaustics = true;
1863	break;
1864
1865	// Show the values of the algorithm's variables
1866	case VK_F4:
1867	g_bShowVariables = !g_bShowVariables;
1868	g_bShowVariablesUserSet = !g_bShowVariablesUserSet;
1869	break;
1870
1871	// Show HUD
1872	case VK_F5:
1873	g_bShowHUD = !g_bShowHUD;
1874	if (!g_bShowVariablesUserSet) g_bShowVariables = g_bShowHelp \|\| g_bShowHUD;
1875	break;
1876
1877	// Change the Mesh of CenterObject
1878	case '1':
1879	SAFE_RELEASE( g_pCenterObjectMesh );
1880	V( LoadMesh( SPHERE, &g_pCenterObjectMesh, true ) );
1881	g_bRunGenerateCaustics = true;
1882	break;
1883
1884	case '2':
1885	SAFE_RELEASE( g_pCenterObjectMesh );
1886	V( LoadMesh( SKULL, &g_pCenterObjectMesh, true ) );
1887	g_bRunGenerateCaustics = true;
1888	break;
1889
1890	case '3':
1891	SAFE_RELEASE( g_pCenterObjectMesh );
1892	V( LoadMesh( BUNNY, &g_pCenterObjectMesh, true ) );
1893	g_bRunGenerateCaustics = true;
1894	break;
1895
1896	case '4':
1897	SAFE_RELEASE( g_pCenterObjectMesh );
1898	V( LoadMesh( TEAPOT, &g_pCenterObjectMesh, true ) );
1899	g_bRunGenerateCaustics = true;
1900	break;
1901
1902	case '5':
1903	SAFE_RELEASE( g_pCenterObjectMesh );
1904	V( LoadMesh( TIGER, &g_pCenterObjectMesh, true ) );
1905	g_bRunGenerateCaustics = true;
1906	break;
1907
1908	// Switch between the classical and our new distance impostor method
1909	case 'D':
1910	g_iAlgorithmMethod = 1 - g_iAlgorithmMethod;
1911
1912	if ( g_iAlgorithmMethod == 0 )
1913	g_HUD.GetRadioButton( IDC_CLASSIC_METHOD )->SetChecked( true );
1914	else g_HUD.GetRadioButton( IDC_DISTANCE_IMPOSTOR_METHOD )->SetChecked( true );
1915
1916	g_bRunGenerateCaustics = true;
1917	break;
1918
1919	// Change the number of iteration.
1920	case VK_ADD:
1921	if( g_iNumberOfIteration < 20 ) g_iNumberOfIteration++;
1922	g_HUD.GetSlider( IDC_NUMBER_OF_ITERATION_SLIDER )->SetValue( g_iNumberOfIteration );
1923	g_bRunGenerateCaustics = true;
1924	break;
1925
1926	case VK_SUBTRACT:
1927	if ( g_iNumberOfIteration > 0 ) g_iNumberOfIteration--;
1928	g_HUD.GetSlider( IDC_NUMBER_OF_ITERATION_SLIDER )->SetValue( g_iNumberOfIteration );
1929	g_bRunGenerateCaustics = true;
1930	break;
1931
1932
1933	// Change the intensity of the shadow
1934	case 'Z':
1935	g_fShadowIntensity += bAltDown ? 0.1f : 0.01f;
1936	if ( g_fShadowIntensity > 1 ) g_fShadowIntensity = 1;
1937	g_HUD.GetSlider( IDC_SHADOW_INTENSITY_SLIDER )->SetValue( (int)g_fShadowIntensity * 100 );
1938	g_bRunGenerateCaustics = true;
1939	break;
1940
1941	case 'T':
1942	g_fShadowIntensity -= bAltDown ? 0.1f : 0.01f;
1943	if ( g_fShadowIntensity < 0 ) g_fShadowIntensity = 0;
1944	g_HUD.GetSlider( IDC_SHADOW_INTENSITY_SLIDER )->SetValue( (int)g_fShadowIntensity * 100 );
1945
1946	g_bRunGenerateCaustics = true;
1947	break;
1948
1949
1950	// Change the intensity of the caustics snippet
1951	case 'U':
1952	g_fCausticsIntensity -= bAltDown ? 0.1f : 0.01f;
1953	if ( g_fCausticsIntensity < 0 ) g_fCausticsIntensity = 0;
1954
1955	//g_fCausticsIntensity = pow ( 2.0f, g_HUD.GetSlider( IDC_CAUSTICS_INTENSITY_SLIDER )->GetValue() / 100.0f );
1956	g_HUD.GetSlider( IDC_CAUSTICS_INTENSITY_SLIDER )->SetValue( (int)( log( g_fCausticsIntensity ) / log ( 1.2f ) ) * 100 );
1957
1958	g_bRunGenerateCaustics = true;
1959	break;
1960
1961	case 'I':
1962	g_fCausticsIntensity += bAltDown ? 0.1f : 0.01f;
1963	g_HUD.GetSlider( IDC_CAUSTICS_INTENSITY_SLIDER )->SetValue( (int)(log( g_fCausticsIntensity ) / log ( 1.2f ) ) * 100 );
1964	g_bRunGenerateCaustics = true;
1965	break;
1966
1967
1968	// Change the refraction index
1969	case 'E':
1970	g_fRefractionIndex -= bAltDown ? 0.1f : 0.01f;
1971	if (g_fRefractionIndex < 0) g_fRefractionIndex = 0;
1972	g_HUD.GetSlider( IDC_REFRACTION_INDEX_SLIDER )->SetValue( (int)g_fRefractionIndex * 100 );
1973
1974	g_bRunGenerateCaustics = true;
1975	break;
1976
1977	case 'R':
1978	g_fRefractionIndex += bAltDown ? 0.1f : 0.01f;
1979	if (g_fRefractionIndex > 1) g_fRefractionIndex = 1;
1980	g_HUD.GetSlider( IDC_REFRACTION_INDEX_SLIDER )->SetValue( (int)g_fRefractionIndex * 100 );
1981
1982	g_bRunGenerateCaustics = true;
1983	break;
1984
1985
1986	// Change Fresnel factor
1987	case 'Q':
1988	g_fFresnelFactor -= bAltDown ? 0.1f : 0.01f;
1989	if (g_fFresnelFactor < 0) g_fFresnelFactor = 0;
1990	g_HUD.GetSlider( IDC_FRESNEL_FACTOR_SLIDER )->SetValue( (int)g_fFresnelFactor * 100 );
1991
1992	g_bRunGenerateCaustics = true;
1993	break;
1994	case 'W':
1995	g_fFresnelFactor += bAltDown ? 0.1f : 0.01f;
1996	if (g_fFresnelFactor > 1) g_fFresnelFactor = 1;
1997	g_HUD.GetSlider( IDC_FRESNEL_FACTOR_SLIDER )->SetValue( (int)g_fFresnelFactor * 100 );
1998
1999	g_bRunGenerateCaustics = true;
2000	break;
2001
2002
2003	// Change PhotonMap size
2004	case 'O':
2005	if( g_iPhotonMapSize > 1 )
2006	{
2007	g_iPhotonMapSize /= 2;
2008	g_HUD.GetSlider( IDC_PHOTON_MAP_SIZE_SLIDER )->SetValue( (int) ( log( (float)g_iPhotonMapSize ) / log( 2.0f ) ) );
2009	CreateVertexBuffer();
2010	g_bRunGenerateCaustics = true;
2011	}
2012	break;
2013
2014	case 'P':
2015	if( g_iPhotonMapSize < PHOTONMAP_MAX_SIZE )
2016	{
2017	g_iPhotonMapSize *= 2;
2018	g_HUD.GetSlider( IDC_PHOTON_MAP_SIZE_SLIDER )->SetValue( (int) ( log( (float)g_iPhotonMapSize ) / log( 2.0f ) ) );
2019	CreateVertexBuffer();
2020	g_bRunGenerateCaustics = true;
2021	}
2022	break;
2023
2024	// Change the size of the snippet
2025	case 'K':
2026	g_fSnippetSize -= bAltDown ? 0.1f : 0.01f;
2027	if( g_fSnippetSize < 0 ) g_fSnippetSize = 0;
2028	g_HUD.GetSlider( IDC_SNIPPET_SIZE_SLIDER )->SetValue( (int)g_fSnippetSize * 100 );
2029
2030	CreateVertexBuffer();
2031	g_bRunGenerateCaustics = true;
2032	break;
2033	case 'L':
2034	g_fSnippetSize += bAltDown ? 0.1f : 0.01f;
2035	if( (int)g_fSnippetSize > SNIPPET_MAX_SIZE ) g_fSnippetSize = SNIPPET_MAX_SIZE;
2036	g_HUD.GetSlider( IDC_SNIPPET_SIZE_SLIDER )->SetValue( (int)g_fSnippetSize * 100 );
2037
2038	CreateVertexBuffer();
2039	g_bRunGenerateCaustics = true;
2040	break;
2041
2042
2043	// Move CenterObject / Light Source
2044	case VK_RIGHT: movement.x += STEP; break;
2045	case VK_LEFT: movement.x -= STEP; break;
2046	case VK_UP: movement.z += STEP; break;
2047	case VK_DOWN: movement.z -= STEP; break;
2048	case VK_PRIOR: movement.y += STEP; break;
2049	case VK_NEXT: movement.y -= STEP; break;
2050	}
2051
2052	// Move Light Source
2053	if (bAltDown)
2054	{
2055	g_vLightPos += movement;
2056	}
2057	// Move CenterObject
2058	else
2059	{
2060	g_vCenterObjectPos += movement;
2061
2062	// Refresh scaled World matrix of Center Mesh
2063	g_mWorldCenterObject = ScaleAndOffset(g_fCenterObjectSize, g_vCenterObjectPos);
2064	}
2065	}
2066	}
2067
2068
2069	//--------------------------------------------------------------------------------------
2070	// Handles the GUI events
2071	//--------------------------------------------------------------------------------------
2072	void CALLBACK OnGUIEvent( UINT nEvent, int nControlID, CDXUTControl* pControl )
2073	{
2074	switch( nControlID )
2075	{
2076	case IDC_TOGGLEFULLSCREEN: DXUTToggleFullScreen(); break;
2077	case IDC_TOGGLEREF: DXUTToggleREF(); break;
2078	case IDC_CHANGEDEVICE: DXUTSetShowSettingsDialog( !DXUTGetShowSettingsDialog() ); break;
2079
2080	case IDC_NUMBER_OF_ITERATION_SLIDER:
2081	g_iNumberOfIteration = g_HUD.GetSlider( IDC_NUMBER_OF_ITERATION_SLIDER )->GetValue();
2082	break;
2083
2084	case IDC_FRESNEL_FACTOR_SLIDER:
2085	g_fFresnelFactor = g_HUD.GetSlider( IDC_FRESNEL_FACTOR_SLIDER )->GetValue() / 100.0f;
2086	break;
2087
2088	case IDC_REFRACTION_INDEX_SLIDER:
2089	g_fRefractionIndex = g_HUD.GetSlider( IDC_REFRACTION_INDEX_SLIDER )->GetValue() / 100.0f;
2090	break;
2091
2092	case IDC_SHADOW_INTENSITY_SLIDER:
2093	g_fShadowIntensity = g_HUD.GetSlider( IDC_SHADOW_INTENSITY_SLIDER )->GetValue() / 100.0f;
2094	break;
2095
2096	case IDC_CAUSTICS_INTENSITY_SLIDER:
2097	//g_fCausticsIntensity = g_HUD.GetSlider( IDC_CAUSTICS_INTENSITY_SLIDER )->GetValue() / 100.0f;
2098	g_fCausticsIntensity = pow ( 1.2f, g_HUD.GetSlider( IDC_CAUSTICS_INTENSITY_SLIDER )->GetValue() / 100.0f );
2099	break;
2100
2101	case IDC_SHADOW_CHECK_BOX:
2102	g_bShadowON = ( g_HUD.GetCheckBox( IDC_SHADOW_CHECK_BOX )->GetChecked() );
2103	break;
2104
2105	case IDC_CAUSTICS_CHECK_BOX:
2106	g_bCausticsON = (g_HUD.GetCheckBox( IDC_CAUSTICS_CHECK_BOX )->GetChecked() );
2107	break;
2108
2109	case IDC_CENTEROBJ_CHECK_BOX:
2110	g_bRenderCenterObjectWithBrdfON = ( g_HUD.GetCheckBox( IDC_CENTEROBJ_CHECK_BOX )->GetChecked() );
2111	break;
2112
2113	case IDC_SNIPPET_SIZE_IS_CONSTANT_CHECK_BOX:
2114	g_bSnippetSizeIsConstant = ( g_HUD.GetCheckBox( IDC_SNIPPET_SIZE_IS_CONSTANT_CHECK_BOX )->GetChecked() );
2115
2116	CreateVertexBuffer();
2117	break;
2118
2119	case IDC_SHOW_PHOTON_MAP_CHECK_BOX:
2120	g_bShowPhotonMap = ( g_HUD.GetCheckBox( IDC_SHOW_PHOTON_MAP_CHECK_BOX )->GetChecked() );
2121
2122	break;
2123
2124	case IDC_CLASSIC_METHOD:
2125	case IDC_DISTANCE_IMPOSTOR_METHOD:
2126
2127	if ( g_HUD.GetRadioButton( IDC_DISTANCE_IMPOSTOR_METHOD )->GetChecked() )
2128	g_iAlgorithmMethod = 1;
2129	else
2130	g_iAlgorithmMethod = 0;
2131	break;
2132
2133	case IDC_PHOTON_MAP_SIZE_SLIDER:
2134	g_iPhotonMapSize = (int)pow( 2.0f, g_HUD.GetSlider( IDC_PHOTON_MAP_SIZE_SLIDER )->GetValue() );
2135
2136	CreateVertexBuffer();
2137	break;
2138
2139	case IDC_SNIPPET_SIZE_SLIDER:
2140	g_fSnippetSize = g_HUD.GetSlider( IDC_SNIPPET_SIZE_SLIDER )->GetValue() / 100.0f;
2141
2142	CreateVertexBuffer();
2143	break;
2144
2145	case IDC_RESET_PARAMETERS_BUTTON:
2146	// Reset the parameters of the algorithm
2147	g_bShadowON = true;
2148	g_bCausticsON = true;
2149	g_bRenderCenterObjectWithBrdfON = true;
2150	g_bShowPhotonMap = true;
2151
2152	g_fFresnelFactor = 0.05f;
2153	g_fRefractionIndex = 0.9f;
2154	g_fShadowIntensity = 0.25f;
2155	g_fCausticsIntensity = 0.05f;
2156	g_fSnippetSize = 3.0f;
2157
2158	g_iNumberOfIteration = 10;
2159	g_iAlgorithmMethod = 1;
2160	g_iPhotonMapSize = 64;
2161
2162	// Reset the HUD
2163	g_HUD.GetCheckBox( IDC_SHADOW_CHECK_BOX )->SetChecked( g_bShadowON );
2164	g_HUD.GetCheckBox( IDC_CAUSTICS_CHECK_BOX )->SetChecked( g_bCausticsON );
2165	g_HUD.GetCheckBox( IDC_CENTEROBJ_CHECK_BOX )->SetChecked( g_bRenderCenterObjectWithBrdfON );
2166	g_HUD.GetCheckBox( IDC_SNIPPET_SIZE_IS_CONSTANT_CHECK_BOX )->SetChecked( g_bSnippetSizeIsConstant );
2167	g_HUD.GetCheckBox( IDC_SHOW_PHOTON_MAP_CHECK_BOX )->SetChecked( g_bShowPhotonMap );
2168
2169	g_HUD.GetRadioButton( IDC_DISTANCE_IMPOSTOR_METHOD )->SetChecked( true );
2170
2171	g_HUD.GetSlider( IDC_NUMBER_OF_ITERATION_SLIDER )->SetValue( g_iNumberOfIteration );
2172	g_HUD.GetSlider( IDC_FRESNEL_FACTOR_SLIDER )->SetValue( (int)( g_fFresnelFactor * 100 ) );
2173	g_HUD.GetSlider( IDC_REFRACTION_INDEX_SLIDER )->SetValue( (int)( g_fRefractionIndex * 100 + 1 ) );
2174	g_HUD.GetSlider( IDC_SHADOW_INTENSITY_SLIDER )->SetValue( (int)( g_fShadowIntensity * 100 ) );
2175	g_HUD.GetSlider( IDC_CAUSTICS_INTENSITY_SLIDER )->SetValue( (int)( ( log( g_fCausticsIntensity ) / log ( 1.2f ) ) * 100.0f ) );
2176	g_HUD.GetSlider( IDC_SNIPPET_SIZE_SLIDER )->SetValue( (int)g_fSnippetSize * 100 );
2177	g_HUD.GetSlider( IDC_PHOTON_MAP_SIZE_SLIDER )->SetValue( (int)( log( (float)g_iPhotonMapSize ) / log( 2.0f ) ) );
2178
2179
2180	CreateVertexBuffer();
2181	g_bRunGenerateCaustics = true;
2182	break;
2183	}
2184
2185	// Regenerate caustics to show changes
2186	g_bRunGenerateCaustics = true;
2187	}
2188
2189
2190	//--------------------------------------------------------------------------------------
2191	// This callback function will be called immediately after the Direct3D device has
2192	// entered a lost state and before IDirect3DDevice9::Reset is called. Resources created
2193	// in the OnResetDevice callback should be released here, which generally includes all
2194	// D3DPOOL_DEFAULT resources. See the "Lost Devices" section of the documentation for
2195	// information about lost devices.
2196	//--------------------------------------------------------------------------------------
2197	void CALLBACK OnLostDevice()
2198	{
2199	if( g_pFont )
2200	g_pFont->OnLostDevice();
2201	if( g_pEffect )
2202	g_pEffect->OnLostDevice();
2203
2204	SAFE_RELEASE( g_pTextSprite );
2205
2206
2207	SAFE_RELEASE( g_pRoomCubeMapColorDistTexture );
2208	SAFE_RELEASE( g_pPowerOfSnippetTexelTexture );
2209	SAFE_RELEASE( g_pRoomCubeMapUVTexture );
2210	SAFE_RELEASE( g_pShadowMapTexture );
2211	SAFE_RELEASE( g_pRoomLastTexture );
2212	SAFE_RELEASE( g_pRoomModifyTexture );
2213	SAFE_RELEASE( g_pPhotonUVTexture );
2214	SAFE_RELEASE( g_pRoomTexture );
2215
2216	for(int i = 0; i < 4; i++)
2217	{
2218	SAFE_RELEASE( g_pColumnModifyTexture[i] );
2219	}
2220	for(int i = 0; i < 5; i++)
2221	{
2222	SAFE_RELEASE( g_pColumnLastTexture[i] );
2223	}
2224
2225	SAFE_RELEASE( g_pDepthStencilSurface );
2226	SAFE_RELEASE( g_pRoomCubeMapDepthStencilSurface );
2227	SAFE_RELEASE( g_pShadowMapDepthStencilSSurface );
2228	SAFE_RELEASE( g_pPhotonUVMapSurface );
2229	SAFE_RELEASE( g_pShadowMapSurface );
2230	SAFE_RELEASE( g_pPhotonMapDepthStencilSurface );
2231	SAFE_RELEASE( g_pRoomLastSurface );
2232	SAFE_RELEASE( g_pRoomModifySurface );
2233	SAFE_RELEASE( g_pRoomSurface );
2234
2235	for(int i = 0; i < 4; i++)
2236	{
2237	SAFE_RELEASE( g_pColumnsModifySurface[i] );
2238	}
2239	for(int i = 0; i < 5; i++)
2240	{
2241	SAFE_RELEASE( g_pColumnsLastSurface[i] );
2242	}
2243
2244	SAFE_RELEASE( g_pFullScreenQuadVertexDeclaration );
2245	SAFE_RELEASE( g_pFullScreenQuadVertexBuffer );
2246	SAFE_RELEASE( g_pSnippetVertexDeclaration );
2247	SAFE_RELEASE( g_bSnippetVertexBuffer );
2248	}
2249
2250	//--------------------------------------------------------------------------------------
2251	// This callback function will be called immediately after the Direct3D device has
2252	// been destroyed, which generally happens as a result of application termination or
2253	// windowed/full screen toggles. Resources created in the OnCreateDevice callback
2254	// should be released here, which generally includes all D3DPOOL_MANAGED resources.
2255	//--------------------------------------------------------------------------------------
2256	void CALLBACK OnDestroyDevice()
2257	{
2258	SAFE_RELEASE( g_pFullScreenQuadVertexDeclaration );
2259	SAFE_RELEASE( g_pFullScreenQuadVertexBuffer );
2260	SAFE_RELEASE( g_pSnippetVertexDeclaration );
2261	SAFE_RELEASE( g_bSnippetVertexBuffer );
2262	SAFE_RELEASE( g_pCenterObjectMesh );
2263	SAFE_RELEASE( g_pColumnMesh );
2264	SAFE_RELEASE( g_pLightMesh );
2265	SAFE_RELEASE( g_pRoomMesh );
2266	SAFE_RELEASE( g_pEffect );
2267	SAFE_RELEASE( g_pFont );
2268	}

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source: GTP/branches/IllumWPdeliver2008dec/IlluminationWP/demos/Standalone/RayTraceEffects [DirectX]/RayTraceEffects.cpp @ 3255

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