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source: GTP/trunk/Lib/Illum/GPUObscurancesGT/src/vcObscuranceMap.cpp @ 930

Revision 930, 38.4 KB checked in by igarcia, 19 years ago (diff)

Line
1	//========================================
2	// Class to interface the VisualCAD specifications.
3	// Nicolau Sunyer & Sergi Funtané (10/13/2005).
4	// Universitat de Girona.
5	//========================================
6
7	#pragma warning(disable:4244)
8	// Includes
9	#include "glew.h"
10	#include <glut.h>
11	#include "stdlib.h"
12
13	// Includes
14	#include "CMesh.h"
15	#include "vcObscuranceMap.h"
16
17	//progress bar
18	#include <wx/progdlg.h>
19
20	#define ROUND(x) (floor(x+0.5))
21
22	#ifndef M_PI
23	#define M_PI 3.14159265358979323846
24	#endif
25
26	// DepthPeeling Layers.
27	#define MAX_LAYERS 12
28
29	// To use Offsets in the PBOs.
30	#define BUFFER_OFFSET(i) ((char *)NULL + (i))
31
32	//GLSL
33	// Handlers
34	GLuint vProjection,fProjection,pProjection;
35	GLuint vReflect, fReflect, pReflect;
36	GLuint vCopy, fCopy, pCopy;
37	GLuint vTransfer, fTransfer, pTransfer;
38	GLuint vNormalize, fNormalize, pNormalize;
39
40	//Uniform Parameters
41	//Projection Step
42	GLint TexturaDepthProjection;
43	GLint SizeProjection;
44	GLint FirstProjection;
45
46	//Reflectivity texture generation Step.
47
48	//Texture Copy Step.
49	GLint TextureCopy;
50	GLint Texture2Copy;
51
52	//Energy Transfer Step.
53	GLint TexturaReflectTransfer;
54	GLint DirectionTransfer;
55	GLint DmaxTransfer;
56
57	//Lightmap Normalization Step.
58	GLint TexturaNormalize;
59
60	// Global variables
61	CVert Vertex, Direccio, Increment, Primer, Ultim, Origin;
62
63	static GLuint texName[3];
64
65	static int ResX; //Resolution
66	static int ResY;
67	static int Res2X; //Resolution
68	static int Res2Y; //Resolution
69
70
71	//RenderTexture *ob=NULL; // RenderTexture for the Obscurances.
72
73	static GLuint texProjeccions[2]; //Texture name
74	static GLuint texTransfer[1];
75	static GLuint texReflect[1];
76	static GLuint texCopy[1];
77	static GLuint texNormalize[1];
78	static GLuint fb1; // Framebuffer Reflectivity
79	static GLuint fb2; // Framebuffer Projeccions
80	static GLuint fb3; // Framebuffer Transfer
81	static GLuint fb4; // Framebuffer Copy
82	static GLuint fb5; // Lightmap Normalization
83
84
85
86	GLenum glerror;
87
88	GLfloat *m_pTextureImage;// Texture of diferent colors.
89	GLfloat *m_pTextureReflect; //Texture of reflectivitat.
90	GLfloat *m_pBlau;
91	GLfloat *m_pNegre;
92	int obs_global_cancelar;
93
94	CMesh g_pMesh; // Mesh Data
95	static CSphere Esfera;
96
97	static GLuint ProjectionsPBO[MAX_LAYERS+2]; // PBOs to store the projections.
98	static GLuint ObscurancesPBO; // PBOs to store the projections.
99	static GLuint ztex; //Texture with the depth.
100
101
102	// Function to use when the window is resized
103	void changeSize(int w, int h)
104	{
105
106	if(h == 0)
107	h = 1;
108
109	float ratio = 1.0 * (float)w / (float)h;
110
111	//Camera Set up
112	glMatrixMode(GL_PROJECTION);
113	glLoadIdentity();
114	gluOrtho2D(-w,w,-h,h);
115
116	glMatrixMode(GL_MODELVIEW);
117	glLoadIdentity();
118
119	glViewport(0, 0, w, h);
120
121	}
122
123
124	// Returns a random point in the surface of the sphere
125	CVert ranpoint(float r, CVert c)
126	{
127	double ale1, ale2;
128	CVert p;
129	float alfa,beta;
130
131	ale1= (float)rand()/(float)RAND_MAX;
132	ale2= (float)rand()/(float)RAND_MAX;
133
134	alfa=1.0-2.0ale1; / real between -1 and 1 */
135	alfa=acos(alfa); /* angle between 0 and PI */
136
137	beta=2M_PIale2; /* angle between 0 and 2PI /
138
139	p.x=c.x+rsin(alfa)cos(beta);
140	p.y=c.y+rsin(alfa)sin(beta);
141	p.z=c.z+r*cos(alfa);
142
143	return p;
144	}
145
146	// Function to find a point in the sphere in the direction that goes from the point in the surface of the sphere
147	// to the center of the sphere. First it gets the random point in the surface.
148	void BuscarDireccio()
149	{
150	Esfera.center.x = 0.0;
151	Esfera.center.y = 0.0;
152	Esfera.center.z = 0.0;
153	Esfera.radius = sqrt(12.0)/2.0;
154
155	Primer = ranpoint(Esfera.radius,Esfera.center);
156	Vertex.x = Primer.x + (Esfera.center.x-Primer.x) * ((float)rand()/(float)RAND_MAX)*2.0;
157	Vertex.y = Primer.y + (Esfera.center.y-Primer.y) * ((float)rand()/(float)RAND_MAX)*2.0;
158	Vertex.z = Primer.z + (Esfera.center.z-Primer.z) * ((float)rand()/(float)RAND_MAX)*2.0;
159	}
160
161	// Function that renders the depth peeling geometry planes and stores them in PBOs.
162	void RenderProjeccions(void)
163	{
164	glUseProgram(pProjection);
165	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb2);
166
167	int i, j, e;
168	changeSize(ResX, ResY);
169	glClearColor(0.0,0.0,1.0,1.0);
170	glClearDepth(1.0);
171	glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
172	glEnable (GL_DEPTH_TEST); // Enable Depth Testing
173	glDepthFunc(GL_LESS);
174
175	glDisable(GL_CULL_FACE);
176
177	glMatrixMode(GL_PROJECTION);
178	glLoadIdentity();
179	glOrtho(-Esfera.radius,Esfera.radius,-Esfera.radius,Esfera.radius,0,Esfera.radius * 2.0);
180
181	glMatrixMode(GL_MODELVIEW);
182	glLoadIdentity();
183	gluLookAt(Primer.x,Primer.y,Primer.z,
184	Esfera.center.x,Esfera.center.y,Esfera.center.z,
185	0.0f,1.0f,0.0f);
186
187	glViewport(0,0,ResX,ResY);
188
189	glUniform1f(SizeProjection, (float)ResX);
190	glUniform1f(FirstProjection, 1.0);
191
192	// Enable Pointers
193	glEnableClientState( GL_VERTEX_ARRAY ); // Enable Vertex Arrays
194	glEnableClientState( GL_TEXTURE_COORD_ARRAY ); // Enable Texture Coord Arrays
195	glEnableClientState( GL_NORMAL_ARRAY ); // Enable Texture Coord Arrays
196
197	for(i=0; i<g_pMesh.m_pObject._numGeos;i++)
198	{
199	for(j=0; j<g_pMesh.m_pObject._geo[i]._numTriSets;j++)
200	{
201	// Set Pointers To Our Data
202	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOVertices );
203	glVertexPointer( 3, GL_FLOAT, 0, (char *) NULL ); // Set The Vertex Pointer To The Vertex Buffer
204	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOTexCoords );
205	glTexCoordPointer( 2, GL_FLOAT, 0, (char *) NULL ); // Set The TexCoord Pointer To The TexCoord Buffer
206	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBONormals );
207	glNormalPointer( GL_FLOAT, 0, (char *) NULL ); // Set The TexCoord Pointer To The TexCoord Buffer
208	glBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOIndexs );
209
210	// Render
211	glDrawElements( GL_TRIANGLES, g_pMesh.m_pObject._geo[i]._triSet[j]._numTris*3,GL_UNSIGNED_INT,BUFFER_OFFSET(0) ); // Draw All Of The Quads At Once
212
213	}
214	}
215
216	//Copy the color buffer to PBO.
217	glBindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, ProjectionsPBO[1] ); // Bind The Buffer
218	glReadPixels(0, 0, ResX, ResY, GL_RGBA, GL_FLOAT, BUFFER_OFFSET(0));
219	glBindBufferARB(GL_PIXEL_PACK_BUFFER_EXT, 0);
220
221	//Render the following layers.
222	glUniform1f(FirstProjection, 0.0);
223
224	e = 1;
225
226	for(e = 1; e < MAX_LAYERS; e++)
227	{
228	glBindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, ProjectionsPBO[e] ); // Bind The Buffer
229	glBindTexture(GL_TEXTURE_2D,texName[0]);
230	glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, ResX, ResY);
231	glBindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, 0 ); // Bind The Buffer
232	glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
233
234	glActiveTexture(GL_TEXTURE0);
235	glBindTexture(GL_TEXTURE_2D, texName[0]);
236	glUniform1i(TexturaDepthProjection, 0);
237
238	for(i=0; i<g_pMesh.m_pObject._numGeos;i++)
239	{
240	for(j=0; j<g_pMesh.m_pObject._geo[i]._numTriSets;j++)
241	{
242	// Set Pointers To Our Data
243	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOVertices );
244	glVertexPointer( 3, GL_FLOAT, 0, (char *) NULL ); // Set The Vertex Pointer To The Vertex Buffer
245	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOTexCoords );
246	glTexCoordPointer( 2, GL_FLOAT, 0, (char *) NULL ); // Set The TexCoord Pointer To The TexCoord Buffer
247	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBONormals );
248	glNormalPointer( GL_FLOAT, 0, (char *) NULL ); // Set The TexCoord Pointer To The TexCoord Buffer
249	glBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOIndexs );
250
251	glDrawElements( GL_TRIANGLES, g_pMesh.m_pObject._geo[i]._triSet[j]._numTris*3,GL_UNSIGNED_INT,BUFFER_OFFSET(0) ); // Draw All Of The Quads At Once
252	}
253	}
254
255	glBindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, ProjectionsPBO[e+1] ); // Bind The Buffer
256	glReadPixels(0, 0, ResX, ResY, GL_RGBA, GL_FLOAT, BUFFER_OFFSET(0));
257	glBindBufferARB(GL_PIXEL_PACK_BUFFER_EXT, 0);
258	}
259
260	glDisableClientState( GL_VERTEX_ARRAY ); // Disable Vertex Arrays
261	glDisableClientState( GL_TEXTURE_COORD_ARRAY ); // Disable Texture Coord Arrays
262	glDisableClientState( GL_NORMAL_ARRAY ); // Disable Texture Coord Arrays
263
264	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
265	glUseProgram(0);
266	}
267
268	// Function that calculates the lightmap using the neighbouring projections.
269	void RenderTransfer(void)
270	{
271	glUseProgram(pTransfer);
272	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb3);
273
274	glBlendFunc(GL_ONE, GL_ONE);
275
276	glEnable(GL_BLEND);
277
278	glMatrixMode(GL_PROJECTION);
279	glLoadIdentity();
280	gluOrtho2D(-1,1,-1,1);
281
282	glMatrixMode(GL_MODELVIEW);
283	glLoadIdentity();
284	glPointSize(1.0);
285
286	glViewport(0, 0, Res2X, Res2Y);
287
288	glUniform1f(DmaxTransfer, (GLfloat)0.3);
289	glUniform1f(DirectionTransfer, 0.0);
290	glActiveTexture(GL_TEXTURE0);
291	glBindTexture(GL_TEXTURE_2D, texReflect[0]);
292	glUniform1i(TexturaReflectTransfer, 0);
293
294	//First Render
295	glEnableClientState( GL_VERTEX_ARRAY ); // Enable Vertex Arrays
296	glUniform1f(DirectionTransfer, 1.0);
297	glBindBufferARB( GL_ARRAY_BUFFER_ARB, ProjectionsPBO[1] );
298	glVertexPointer( 4, GL_FLOAT, 0, (char *) NULL ); // Set The Vertex Pointer To The Vertex Buffer
299
300	glEnableClientState( GL_TEXTURE_COORD_ARRAY ); // Enable Texture Coord Arrays
301	glBindBufferARB( GL_ARRAY_BUFFER_ARB, ProjectionsPBO[0] );
302	glTexCoordPointer( 4, GL_FLOAT, 0, (char *) NULL ); // Set The TexCoord Pointer To The TexCoord Buffer
303
304	glDrawArrays(GL_POINTS, 0, ResX*ResY );
305
306	for(int e=0;e<MAX_LAYERS-1;e++)
307	{
308	glUniform1f(DirectionTransfer, 0.0);
309
310	glBindBufferARB( GL_ARRAY_BUFFER_ARB, ProjectionsPBO[e+1] );
311	glVertexPointer( 4, GL_FLOAT, 0, (char *) NULL ); // Set The Vertex Pointer To The Vertex Buffer
312
313	glBindBufferARB( GL_ARRAY_BUFFER_ARB, ProjectionsPBO[e+2] );
314	glTexCoordPointer( 4, GL_FLOAT, 0, (char *) NULL ); // Set The TexCoord Pointer To The TexCoord Buffer
315
316	glDrawArrays(GL_POINTS, 0, ResX*ResY );
317
318	glUniform1f(DirectionTransfer, 1.0);
319
320	glBindBufferARB( GL_ARRAY_BUFFER_ARB, ProjectionsPBO[e+2] );
321	glVertexPointer( 4, GL_FLOAT, 0, (char *) NULL ); // Set The Vertex Pointer To The Vertex Buffer
322
323	glBindBufferARB( GL_ARRAY_BUFFER_ARB, ProjectionsPBO[e+1] );
324	glTexCoordPointer( 4, GL_FLOAT, 0, (char *) NULL ); // Set The TexCoord Pointer To The TexCoord Buffer
325
326	glDrawArrays(GL_POINTS, 0, ResX*ResY );
327	}
328
329	glUniform1f(DirectionTransfer, 0.0);
330	glEnableClientState( GL_VERTEX_ARRAY ); // Enable Vertex Arrays
331	glBindBufferARB( GL_ARRAY_BUFFER_ARB, ProjectionsPBO[MAX_LAYERS] );
332	glVertexPointer( 4, GL_FLOAT, 0, (char *) NULL ); // Set The Vertex Pointer To The Vertex Buffer
333
334	glEnableClientState( GL_TEXTURE_COORD_ARRAY ); // Enable Texture Coord Arrays
335	glBindBufferARB( GL_ARRAY_BUFFER_ARB, ProjectionsPBO[MAX_LAYERS+1] );
336	glTexCoordPointer( 4, GL_FLOAT, 0, (char *) NULL ); // Set The TexCoord Pointer To The TexCoord Buffer
337
338	glDrawArrays(GL_POINTS, 0, ResX*ResY );
339
340
341	glDisableClientState( GL_VERTEX_ARRAY ); // Disable Vertex Arrays
342	glDisableClientState( GL_TEXTURE_COORD_ARRAY ); // Disable Texture Coord Arrays
343
344	glDisable(GL_BLEND);
345	glUseProgram(0);
346
347	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
348
349	}
350
351	// Function that copies the 16-bit fp RGBA buffer of the lightmap to a 32-bit RGBA fb buffer.
352	void CopyTexture(void)
353	{
354	glUseProgram(pCopy);
355	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb4);
356	void *texturePBO;
357
358	glBindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, ObscurancesPBO ); // Bind The Buffer
359	texturePBO = glMapBuffer(GL_PIXEL_PACK_BUFFER_EXT, GL_READ_ONLY);
360	glBindTexture(GL_TEXTURE_2D,texName[1]);
361	glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, Res2X, Res2Y, GL_RGBA, GL_FLOAT, texturePBO);
362	glUnmapBuffer(GL_PIXEL_PACK_BUFFER_ARB);
363	glBindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, 0 ); // Bind The Buffer
364
365	glEnable(GL_CULL_FACE);
366
367	glMatrixMode(GL_PROJECTION);
368	glLoadIdentity();
369	gluOrtho2D(-Res2X,Res2Y,-Res2X,Res2Y);
370
371	glMatrixMode(GL_MODELVIEW);
372	glLoadIdentity();
373
374	glViewport(0, 0, Res2X, Res2Y);
375
376	glActiveTexture(GL_TEXTURE0);
377	glBindTexture(GL_TEXTURE_2D, texTransfer[0]);
378	glUniform1i(TextureCopy, 0);
379	glActiveTexture(GL_TEXTURE1);
380	glBindTexture(GL_TEXTURE_2D, texName[1]);
381	glUniform1i(Texture2Copy, 1);
382	glActiveTexture(GL_TEXTURE0);
383
384
385	//Draw the geometry.
386	glBegin(GL_QUADS);
387	{
388	glTexCoord2f(0, 0); glVertex3f(-Res2X, -Res2Y, -0.5f);
389	glTexCoord2f(1,0); glVertex3f(Res2X, -Res2Y, -0.5f);
390	glTexCoord2f(1,1); glVertex3f(Res2X, Res2Y, -0.5f);
391	glTexCoord2f(0, 1); glVertex3f(-Res2X, Res2Y, -0.5f);
392	}
393	glEnd();
394
395	//Copy Buffer to PBO.
396	glBindBufferARB( GL_PIXEL_PACK_BUFFER_EXT,ObscurancesPBO ); // Bind The Buffer
397	glReadPixels(0, 0, Res2X, Res2Y, GL_RGBA, GL_FLOAT, BUFFER_OFFSET(0));
398	glBindBufferARB(GL_PIXEL_PACK_BUFFER_EXT, 0);
399
400	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb3);
401	glClearColor(0.0,0.0,0.0,0.0);
402	glClear(GL_COLOR_BUFFER_BIT);
403
404	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
405	glUseProgram(0);
406	}
407
408	// Function that calculates the reflectivity map from the scene data.
409	void RenderReflect(void)
410	{
411	glUseProgram(pReflect);
412	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb1);
413
414	int i, j;
415
416	glClearColor(0.0,0.0,0.0,0.0);
417	glClear(GL_COLOR_BUFFER_BIT);
418
419	glMatrixMode(GL_PROJECTION);
420	glLoadIdentity();
421	gluOrtho2D(0,1,0,1);
422
423	glMatrixMode(GL_MODELVIEW);
424	glLoadIdentity();
425
426	glViewport(0, 0, Res2X, Res2Y);
427
428	// Enable Pointers
429	glEnableClientState( GL_VERTEX_ARRAY ); // Enable Vertex Arrays
430	glEnableClientState( GL_COLOR_ARRAY ); // Enable Texture Coord Arrays
431
432	for(i=0; i<g_pMesh.m_pObject._numGeos;i++)
433	{
434	for(j=0; j<g_pMesh.m_pObject._geo[i]._numTriSets;j++)
435	{
436	// Set Pointers To Our Data
437	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOTexCoords );
438	glVertexPointer( 2, GL_FLOAT, 0, (char *) NULL ); // Set The Vertex Pointer To The Vertex Buffer
439	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOColors );
440	glColorPointer( 3, GL_FLOAT, 0, (char *) NULL ); // Set The TexCoord Pointer To The TexCoord Buffer
441	glBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOIndexs );
442
443	// Render
444	glDrawElements( GL_TRIANGLES, g_pMesh.m_pObject._geo[i]._triSet[j]._numTris*3,GL_UNSIGNED_INT,BUFFER_OFFSET(0) ); // Draw All Of The Quads At Once
445
446	}
447	}
448
449	glDisableClientState( GL_VERTEX_ARRAY ); // Enable Vertex Arrays
450	glDisableClientState( GL_COLOR_ARRAY ); // Enable Texture Coord Arrays
451
452	glUseProgram(0);
453	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
454	}
455
456	// Function that copies the 16-bit fp RGBA buffer of the lightmap to a 32-bit RGBA fb buffer.
457	void NormalizeLightmap(void)
458	{
459	glUseProgram(pNormalize);
460	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb5);
461
462	glEnable(GL_CULL_FACE);
463
464	glMatrixMode(GL_PROJECTION);
465	glLoadIdentity();
466	gluOrtho2D(-Res2X,Res2Y,-Res2X,Res2Y);
467
468	glMatrixMode(GL_MODELVIEW);
469	glLoadIdentity();
470
471	glViewport(0, 0, Res2X, Res2Y);
472
473	glActiveTexture(GL_TEXTURE0);
474	glBindTexture(GL_TEXTURE_2D, texCopy[0]);
475	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
476	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
477	glUniform1i(TextureCopy, 0);
478
479	//Draw the geometry.
480	glBegin(GL_QUADS);
481	{
482	glTexCoord2f(0, 0); glVertex3f(-Res2X, -Res2Y, -0.5f);
483	glTexCoord2f(1,0); glVertex3f(Res2X, -Res2Y, -0.5f);
484	glTexCoord2f(1,1); glVertex3f(Res2X, Res2Y, -0.5f);
485	glTexCoord2f(0, 1); glVertex3f(-Res2X, Res2Y, -0.5f);
486	}
487	glEnd();
488
489	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
490	glUseProgram(0);
491	}
492
493	// Function that updates the lightmap.
494	// The number of directions used to calculate the lightmap is iterations * steps
495	void UpdateTexture(int iterations, int steps)
496	{
497	const int range = ((steps * 100) / steps) + ((iterations) * 100)/(steps * iterations);
498
499	//progress bar
500	wxProgressDialog dialog(wxT("Calculating GPUObscurances"),
501	wxT("Progress..."),
502	range, //range
503	0, //parent
504	wxPD_APP_MODAL\|wxPD_AUTO_HIDE\|
505	wxPD_ELAPSED_TIME\|wxPD_ESTIMATED_TIME\|wxPD_REMAINING_TIME\|wxPD_CAN_ABORT);
506
507	bool cont = true;
508
509	printf("\nIteracions: %d => Steps: %d\n", iterations, steps);
510	for(int i = 0; (i < steps) && cont; i++)
511	{
512	for(int j = 0; (j < iterations) && cont; j++)
513	{
514	cont = dialog.Update(i100/steps + j100/(steps*iterations));
515	BuscarDireccio(); // Find a random direction
516	RenderProjeccions();
517	RenderTransfer();
518	}
519	CopyTexture();
520	}
521	printf("\r100%% Done!!!!");
522	NormalizeLightmap();
523	}
524
525	// Function that generates the VBOs with the geometric data of the scene.
526	// It also initializes the constant textures used.
527	void InitGeometry(void)
528	{
529	int i, j;
530	m_pBlau = new float[ResX * ResY * 4];
531	//Initialize a blue buffer.
532	for(i = 0; i<ResX; i++)
533	{
534	for(j = 0; j<ResY; j++)
535	{
536	m_pBlau[4 * (i * ResY + j)] = 0.0;
537	m_pBlau[4 * (i * ResY + j) + 1] = 0.0;
538	m_pBlau[4 * (i * ResY + j) + 2] = 1.0;
539	m_pBlau[4 * (i * ResY + j) + 3] = 1.0;
540	}
541	}
542
543	//Initialize a black buffer
544	for(i = 0; i<Res2X; i++)
545	{
546	for(j = 0; j<Res2Y; j++)
547	{
548	m_pNegre[4(iRes2Y+j)] = 0.0;
549	m_pNegre[4(iRes2Y+j)+1] = 0.0;
550	m_pNegre[4(iRes2Y+j)+2] = 0.0;
551	m_pNegre[4(iRes2Y+j)+3] = 0.0;
552	}
553	}
554
555	for(i = 0; i<g_pMesh.m_pObject._numGeos;i++)
556	{
557	for(j = 0; j<g_pMesh.m_pObject._geo[i]._numTriSets;j++)
558	{
559	//Aqui creeem els VBOs.
560
561	g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOIndexs = 0;
562	// Generate And Bind The Index Buffer
563	glGenBuffersARB( 1, (unsigned int *)&g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOIndexs ); // Get A Valid Name
564	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOIndexs ); // Bind The Buffer
565	// Load The Data
566	glBufferDataARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j]._numTris * 3 * sizeof(int), g_pMesh.m_pObject._geo[i]._triSet[j]._index, GL_STATIC_DRAW_ARB );
567
568	g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOVertices = 0;
569	// Generate And Bind The Vertex Buffer
570	glGenBuffersARB( 1, &g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOVertices ); // Get A Valid Name
571	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOVertices ); // Bind The Buffer
572	// Load The Data
573	glBufferDataARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j]._numVer * 3 * sizeof(float), g_pMesh.m_pObject._geo[i]._triSet[j]._ver, GL_STATIC_DRAW_ARB );
574
575	g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBONormals = 0;
576	// Generate And Bind The Normal Buffer
577	glGenBuffersARB( 1, &g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBONormals ); // Get A Valid Name
578	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBONormals ); // Bind The Buffer
579	// Load The Data
580	glBufferDataARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j]._numVer * 3 * sizeof(float), g_pMesh.m_pObject._geo[i]._triSet[j]._nor, GL_STATIC_DRAW_ARB );
581
582	g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOTexCoords = 0;
583	// Generate And Bind The TexCoord Buffer
584	glGenBuffersARB( 1, &g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOTexCoords ); // Get A Valid Name
585	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOTexCoords ); // Bind The Buffer
586	// Load The Data
587	glBufferDataARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j]._numVer * 2 * sizeof(float), g_pMesh.m_pObject._geo[i]._triSet[j]._tex, GL_STATIC_DRAW_ARB );
588
589	g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOColors = 0;
590	// Generate And Bind The Color Buffer
591	glGenBuffersARB( 1, &g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOColors ); // Get A Valid Name
592	glBindBufferARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j].m_nVBOColors ); // Bind The Buffer
593	// Load The Data
594	//*12
595	glBufferDataARB( GL_ARRAY_BUFFER_ARB, g_pMesh.m_pObject._geo[i]._triSet[j]._numVer * 3 * sizeof(float), g_pMesh.m_pObject._geo[i]._triSet[j]._refl, GL_STATIC_DRAW_ARB );
596	}
597	}
598	glBindBufferARB( GL_ARRAY_BUFFER_ARB, 0 ); // Bind The Buffer
599	}
600
601	// Functions that initializes the RenderTextures, the shaders and so on...
602	void init2(char *argv)
603	{
604	g_pMesh.LoadMesh(argv);
605
606	m_pTextureImage = new float[Res2XRes2Y4];// Texture of diferent colors.
607	m_pTextureReflect = new float[Res2XRes2Y4]; //Texture of reflectivitat.
608	m_pNegre = new float[Res2XRes2Y4];
609
610	//Create Textures.
611	glGenTextures(3, &texName[0]); // Create The Textures
612
613	InitGeometry();
614
615	//Texture
616	// Binding
617	glBindTexture( GL_TEXTURE_2D, texName[0] );
618	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA_FLOAT32_ATI, ResX, ResY, 0, GL_RGBA, GL_FLOAT, NULL);
619	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
620	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
621
622	//Texture
623	// Binding
624	glBindTexture( GL_TEXTURE_2D, texName[1] );
625	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA_FLOAT32_ATI, Res2X, Res2Y, 0, GL_RGBA, GL_FLOAT, NULL);
626	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
627	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
628	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
629	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
630
631
632	//Texture
633	// Binding
634	glBindTexture( GL_TEXTURE_2D, texName[2] );
635	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA_FLOAT32_ATI, Res2X, Res2Y, 0, GL_RGBA, GL_FLOAT, m_pTextureReflect);
636	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
637	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
638	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
639	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
640
641	//FBOs
642	glGenFramebuffersEXT(1, &fb1);
643	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb1);
644
645	glGenTextures(1,&texReflect[0]);
646
647	glBindTexture( GL_TEXTURE_2D, texReflect[0] );
648	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA_FLOAT32_ATI, Res2X, Res2Y, 0, GL_RGBA, GL_FLOAT, 0);
649	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
650	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
651	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
652	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
653
654	glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, texReflect[0],0);
655	glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, 0);
656
657	glGenFramebuffersEXT(1, &fb2);
658	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb2);
659
660	glGenTextures(1,&texProjeccions[0]);
661
662	glBindTexture( GL_TEXTURE_2D, texProjeccions[0] );
663	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA_FLOAT32_ATI, ResX, ResY, 0, GL_RGBA, GL_FLOAT, 0);
664	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
665	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
666	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
667	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
668
669	glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, texProjeccions[0],0);
670
671	glGenRenderbuffersEXT(1, &texProjeccions[1]);
672	glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, texProjeccions[1]);
673	glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, ResX, ResY );
674	glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, texProjeccions[1]);
675
676	glGenFramebuffersEXT(1, &fb3);
677	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb3);
678
679	glGenTextures(1,&texTransfer[0]);
680
681	glBindTexture( GL_TEXTURE_2D, texTransfer[0] );
682	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA_FLOAT16_ATI, Res2X, Res2Y, 0, GL_RGBA, GL_FLOAT, 0);
683	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
684	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
685	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
686	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
687
688	glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, texTransfer[0],0);
689	glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, 0);
690
691	glClearColor(0.0,0.0,0.0,0.0);
692	glClear(GL_COLOR_BUFFER_BIT);
693
694	glGenFramebuffersEXT(1, &fb4);
695	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb4);
696
697	glGenTextures(1,&texCopy[0]);
698
699	glBindTexture( GL_TEXTURE_2D, texCopy[0] );
700	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA_FLOAT32_ATI, Res2X, Res2Y, 0, GL_RGBA, GL_FLOAT, 0);
701	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
702	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
703	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
704	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
705
706	glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, texCopy[0],0);
707	glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, 0);
708
709	glGenFramebuffersEXT(1, &fb5);
710	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb5);
711
712	glGenTextures(1,&texNormalize[0]);
713
714	glBindTexture( GL_TEXTURE_2D, texNormalize[0] );
715	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA_FLOAT32_ATI, Res2X, Res2Y, 0, GL_RGBA, GL_FLOAT, 0);
716	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
717	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
718	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
719	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
720
721	glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, texNormalize[0],0);
722	glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, 0);
723
724	//Create PBO
725	glGenBuffersARB( MAX_LAYERS+2, &ProjectionsPBO[0] );
726	glBindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, ProjectionsPBO[0] ); // Bind The Buffer
727	glBufferDataARB( GL_PIXEL_PACK_BUFFER_EXT, ResXResY4*sizeof(float), m_pBlau, GL_STREAM_COPY );
728	glBindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, ProjectionsPBO[MAX_LAYERS+1] ); // Bind The Buffer
729	glBufferDataARB( GL_PIXEL_PACK_BUFFER_EXT, ResXResY4*sizeof(float), m_pBlau, GL_STREAM_COPY );
730	for (int e = 1; e < MAX_LAYERS+1; e++ )
731	{
732	glBindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, ProjectionsPBO[e] ); // Bind The Buffer
733	glBufferDataARB( GL_PIXEL_PACK_BUFFER_EXT, ResXResY4*sizeof(float), NULL, GL_STREAM_COPY );
734	}
735
736	glGenBuffersARB( 1, &ObscurancesPBO );
737	glBindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, ObscurancesPBO ); // Bind The Buffer
738	glBufferDataARB( GL_PIXEL_PACK_BUFFER_EXT, Res2XRes2Y4*sizeof(float), m_pNegre, GL_STREAM_COPY );
739	glBindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, 0 ); // Bind The Buffer
740
741	//GLSL
742	//Projection Shaders
743
744	vProjection = glCreateShader(GL_VERTEX_SHADER);
745	fProjection = glCreateShader(GL_FRAGMENT_SHADER);
746
747	static const char *vvProjection =
748	" \n"
749	" varying float cosine; \n"
750	" varying vec2 texCoord; \n"
751	" \n"
752	" void main() \n"
753	" { \n"
754	" gl_Position = ftransform(); \n"
755	" texCoord = gl_MultiTexCoord0.st; \n"
756	" \n"
757	" cosine = (gl_ModelViewMatrixInverseTranspose * vec4(gl_Normal,1.0)).z; \n"
758	" } \n"
759	" \n";
760
761	static const char *ffProjection =
762	" \n"
763	" uniform float res; \n"
764	" uniform float first; \n"
765	" uniform sampler2D ztex; \n"
766	" \n"
767	" varying float cosine; \n"
768	" varying vec2 texCoord; \n"
769	" \n"
770	" void main() \n"
771	" { \n"
772	" if( first == 0.0) \n"
773	" { \n"
774	" float depth = tex2D(ztex,gl_FragCoord.xy/res).a; \n"
775	" if (gl_FragCoord.z < (depth + 0.000001)) discard; \n"
776	" } \n"
777	" gl_FragColor.rg = texCoord+0.5/512.0; \n"
778	" gl_FragColor.b = cosine; \n"
779	" gl_FragColor.a = gl_FragCoord.z; \n"
780	" } \n";
781
782
783	glShaderSource(vProjection, 1, &vvProjection, NULL);
784	glShaderSource(fProjection, 1, &ffProjection, NULL);
785
786	glCompileShader(vProjection);
787	glCompileShader(fProjection);
788
789	pProjection = glCreateProgram();
790	glAttachShader(pProjection, vProjection);
791	glAttachShader(pProjection, fProjection);
792
793	glLinkProgram(pProjection);
794
795	glUseProgram(pProjection);
796	TexturaDepthProjection = glGetUniformLocation(pProjection, "ztex");
797	SizeProjection = glGetUniformLocation(pProjection, "res");
798	FirstProjection = glGetUniformLocation(pProjection, "first");
799
800	glUseProgram(0);
801
802
803	//Reflect Shaders
804
805	vReflect = glCreateShader(GL_VERTEX_SHADER);
806	fReflect = glCreateShader(GL_FRAGMENT_SHADER);
807
808	static const char *vvReflect =
809	" \n"
810	" varying vec4 color; \n"
811	" \n"
812	" void main() \n"
813	" { \n"
814	" vec4 posicio = vec4(gl_Vertex.xy, -0.5, 1.0); \n"
815	" gl_Position = gl_ModelViewProjectionMatrix * posicio; \n"
816	" \n"
817	" color = vec4(gl_Color.xyz,1.0); \n"
818	" } \n";
819
820	static const char *ffReflect =
821	" \n"
822	" varying vec4 color; \n"
823	" \n"
824	" void main() \n"
825	" { \n"
826	" gl_FragColor = color; \n"
827	" } \n"
828	" \n";
829
830	glShaderSource(vReflect, 1, &vvReflect, NULL);
831	glShaderSource(fReflect, 1, &ffReflect, NULL);
832
833	glCompileShader(vReflect);
834	glCompileShader(fReflect);
835
836	pReflect = glCreateProgram();
837	glAttachShader(pReflect, vReflect);
838	glAttachShader(pReflect, fReflect);
839
840	glLinkProgram(pReflect);
841
842	glUseProgram(0);
843
844	//Texture Copy Shaders
845
846	vCopy = glCreateShader(GL_VERTEX_SHADER);
847	fCopy = glCreateShader(GL_FRAGMENT_SHADER);
848
849	static const char *vvCopy =
850	" \n"
851	" varying vec2 texCoord; \n"
852	" \n"
853	" void main() \n"
854	" { \n"
855	" vec4 posicio = vec4(gl_Vertex.xyz, 1.0); \n"
856	" gl_Position = gl_ModelViewProjectionMatrix * posicio; \n"
857	" \n"
858	" texCoord = gl_MultiTexCoord0.st; \n"
859	" } \n";
860
861	static const char *ffCopy =
862	" \n"
863	" uniform sampler2D texture; \n"
864	" uniform sampler2D texture2; \n"
865	" \n"
866	" varying vec2 texCoord; \n"
867	" \n"
868	" void main() \n"
869	" { \n"
870	" gl_FragColor = tex2D(texture,texCoord) + tex2D(texture2,texCoord); \n"
871	" } \n";
872
873	glShaderSource(vCopy, 1, &vvCopy, NULL);
874	glShaderSource(fCopy, 1, &ffCopy, NULL);
875
876	glCompileShader(vCopy);
877	glCompileShader(fCopy);
878
879	pCopy = glCreateProgram();
880	glAttachShader(pCopy, vCopy);
881	glAttachShader(pCopy, fCopy);
882
883	glLinkProgram(pCopy);
884
885	glUseProgram(pCopy);
886	TextureCopy = glGetUniformLocation(pCopy, "texture");
887	Texture2Copy = glGetUniformLocation(pCopy, "texture2");
888	glUseProgram(0);
889
890	//Lightmap Normalization Shaders
891
892	vNormalize = glCreateShader(GL_VERTEX_SHADER);
893	fNormalize = glCreateShader(GL_FRAGMENT_SHADER);
894
895	static const char *vvNormalize =
896	" \n"
897	" varying vec2 texCoord; \n"
898	" \n"
899	" void main() \n"
900	" { \n"
901	" vec4 posicio = vec4(gl_Vertex.xyz, 1.0); \n"
902	" gl_Position = gl_ModelViewProjectionMatrix * posicio; \n"
903	" \n"
904	" texCoord = gl_MultiTexCoord0.st; \n"
905	" } \n";
906
907	static const char *ffNormalize =
908	" \n"
909	" uniform sampler2D texture; \n"
910	" \n"
911	" varying vec2 texCoord; \n"
912	" \n"
913	" void main() \n"
914	" { \n"
915	" float res = 256.0; \n"
916	" float dif = 1.0/res; \n"
917	" vec4 aux1 = tex2D(texture,texCoord); \n"
918	" vec4 aux2 = tex2D(texture,vec2(texCoord.r+dif,texCoord.g)); \n"
919	" vec4 aux3 = tex2D(texture,vec2(texCoord.r+dif,texCoord.g+dif)); \n"
920	" vec4 aux4 = tex2D(texture,vec2(texCoord.r,texCoord.g+dif)); \n"
921	" float counter = 0.0; \n"
922	" vec4 aux = vec4(0.0,0.0,0.0,0.0); \n"
923	" if(aux1.a>0.0) \n"
924	" { \n"
925	" aux += vec4(aux1.rgb/aux1.a,1.0); \n"
926	" counter += 1.0; \n"
927	" } \n"
928	" if(aux2.a>0.0) \n"
929	" { \n"
930	" aux += vec4(aux2.rgb/aux2.a,1.0); \n"
931	" counter += 1.0; \n"
932	" } \n"
933	" if(aux3.a>0.0) \n"
934	" { \n"
935	" aux += vec4(aux3.rgb/aux3.a,1.0); \n"
936	" counter += 1.0; \n"
937	" } \n"
938	" if(aux4.a>0.0) \n"
939	" { \n"
940	" aux += vec4(aux4.rgb/aux4.a,1.0); \n"
941	" counter += 1.0; \n"
942	" } \n"
943	" if(counter < 1.0) gl_FragColor = vec4(0.0,0.0,0.0,0.0); \n"
944	" else \n"
945	" { \n"
946	" aux /= counter; \n"
947	" gl_FragColor = aux; \n"
948	" } \n"
949	" } \n";
950
951	glShaderSource(vNormalize, 1, &vvNormalize, NULL);
952	glShaderSource(fNormalize, 1, &ffNormalize, NULL);
953
954	glCompileShader(vNormalize);
955	glCompileShader(fNormalize);
956
957	pNormalize = glCreateProgram();
958	glAttachShader(pNormalize, vNormalize);
959	glAttachShader(pNormalize, fNormalize);
960
961	glLinkProgram(pNormalize);
962
963	glUseProgram(pNormalize);
964	TexturaNormalize = glGetUniformLocation(pNormalize, "texture");
965	glUseProgram(0);
966
967	//Energy Transfer Shaders
968
969	vTransfer = glCreateShader(GL_VERTEX_SHADER);
970	fTransfer = glCreateShader(GL_FRAGMENT_SHADER);
971
972	static const char *vvTransfer =
973	" \n"
974	" uniform float direction; \n"
975	" \n"
976	" varying vec2 p1; \n"
977	" varying vec2 p2; \n"
978	" varying float factor; \n"
979	" \n"
980	" void main() \n"
981	" { \n"
982	" vec4 position = gl_Vertex; \n"
983	" vec4 texCoord = gl_MultiTexCoord0; \n"
984	" if(((direction == 0) && (position.b != 1.0) && (position.b < 0.0) && ((texCoord.b > 0.0) \|\| (texCoord.b == 1))) \n"
985	" \|\| ((direction == 1) && (position.b != 1.0) && (position.b > 0.0) && ((texCoord.b < 0.0) \|\| (texCoord.b == 1)))) \n"
986	" { \n"
987	" \n"
988	" p1 = vec2(position.r, position.g); \n"
989	" \n"
990	" p2 = vec2(texCoord.r, texCoord.g); \n"
991	" \n"
992	" gl_Position = vec4((p1 * 2.0) - vec2(1.0,1.0), 0.0,1.0); \n"
993	" \n"
994	" if (texCoord.b == 1) factor = 1; \n"
995	" else factor = abs(texCoord.a - position.a); \n"
996	" } \n"
997	" else \n"
998	" { \n"
999	" gl_Position = vec4( 0.0,0.0, 2.0, 1.0 ); \n"
1000	" p1 = p2 = vec2(1.0,1.0); \n"
1001	" factor = 0.5; \n"
1002	" } \n"
1003	" } \n";
1004
1005	static const char *ffTransfer =
1006	" \n"
1007	" uniform sampler2D reflectivity; \n"
1008	" uniform float dmax; \n"
1009	" \n"
1010	" varying vec2 p1; \n"
1011	" varying vec2 p2; \n"
1012	" varying float factor; \n"
1013	" \n"
1014	" void main() \n"
1015	" { \n"
1016	" if(factor>=dmax) gl_FragColor.rgb = vec3(0.5,0.5,0.5); \n"
1017	" else gl_FragColor.rgb = tex2D(reflectivity,p2).rgb * sqrt(factor/dmax); \n"
1018	" gl_FragColor.a = 1.0; \n"
1019	" } \n";
1020
1021	glShaderSource(vTransfer, 1, &vvTransfer, NULL);
1022	glShaderSource(fTransfer, 1, &ffTransfer, NULL);
1023
1024	glCompileShader(vTransfer);
1025	glCompileShader(fTransfer);
1026
1027	pTransfer = glCreateProgram();
1028	glAttachShader(pTransfer, vTransfer);
1029	glAttachShader(pTransfer, fTransfer);
1030
1031	glLinkProgram(pTransfer);
1032
1033	glUseProgram(pTransfer);
1034	TexturaReflectTransfer = glGetUniformLocation(pTransfer, "reflectivity");
1035	DirectionTransfer = glGetUniformLocation(pTransfer, "direction");
1036	DmaxTransfer = glGetUniformLocation(pTransfer, "dmax");
1037
1038	glUseProgram(0);
1039
1040	// Setup GL States
1041	glEnable (GL_DEPTH_TEST); // Enable Depth Testing
1042
1043	//Generate the reflectivity texture.
1044	RenderReflect();
1045
1046	UpdateTexture(60,3);
1047
1048	}
1049
1050	// Function that interfaces with the VisualCAD.
1051	int vcObscurerGenerateImage(CMesh &geom, char argv, int quality, int imgUsize, int imgVsize, float *imgRgbBuffer)
1052	{
1053	// float divisor;
1054	int *DadesTemp = new int[4];
1055	float *dadesf=NULL;
1056	int *dadesi=NULL;
1057	int qual;
1058	float aux[4];
1059	float a;
1060
1061
1062	glutCreateWindow("T");
1063
1064	glerror = glewInit();
1065
1066	FILE *file = NULL;
1067
1068	file = fopen("tmp.txt", "w");
1069
1070	if (glerror != GLEW_OK) fprintf(file, "\nError initializing glew library, %s", glewGetErrorString(glerror));
1071	else fprintf(file, "\nTot Correcte!\n");
1072
1073	fclose(file);
1074
1075	memset(&aux, 0.0, 4);
1076
1077	qual = quality;
1078
1079	if (qual < 1) qual = 1;
1080
1081	switch (qual)
1082	{
1083	case 1: imgVsize = imgUsize = 256;
1084	break;
1085	case 2: imgVsize = imgUsize = 512;
1086	break;
1087	case 3: imgVsize = imgUsize = 1024;
1088	break;
1089	case 4: imgVsize = imgUsize = 2048;
1090	break;
1091	default: printf("\nResolution not supported");
1092	};
1093
1094	Res2X = *imgUsize;
1095	Res2Y = *imgVsize;
1096
1097	ResX = Res2X * 2.0;
1098	ResY = Res2Y * 2.0;
1099
1100	if(ResX == 4096) ResX = 2048;
1101	if(ResY == 4096) ResY = 2048;
1102
1103	printf("\nRes(Plans de projeccio): ResolucioX = %d , ResolucioY = %d", ResX, ResY);
1104	printf("\nRes2(Lightmap): ResolucioX = %d , ResolucioY = %d", Res2X, Res2Y);
1105	dadesf = new float[Res2XRes2Y4];
1106	dadesi = new int[Res2XRes2Y4];
1107
1108	init2(argv);
1109
1110	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb5);
1111	glReadPixels(0,0,Res2X,Res2Y,GL_RGBA,GL_FLOAT,dadesf);
1112	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
1113
1114	*imgRgbBuffer = dadesf;
1115
1116	geom = g_pMesh;
1117
1118	return 0;
1119
1120	}

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