int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
	createWindow(hInstance);
	createGLContext();
	imguiRenderGLInit("c:\\windows\\fonts\\calibri.ttf");

	timeBeginPeriod(1);

	ShowWindow(hWnd, SW_SHOW);

	for (;;) {
		MSG msg;
		while (PeekMessage(&msg, 0, 0, 0, PM_REMOVE)) {
			if (msg.message == WM_QUIT)
				return 0;

			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}

		renderFrame();
	}

	timeEndPeriod(1);
}
Example #2
0
void init_imgui()
{
	if (!imguiRenderGLInit(DroidSans_ttf, DroidSans_ttf_len))
    {
        fprintf(stderr, "Could not init GUI renderer.\n");
        exit(EXIT_FAILURE);
    }
}
  void TextEngineRenderer::Create() {
    glClearColor(1.0, 1.0, 1.0, 1.0);
    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
    
    if (edit) {
      MaybeRebuildAttenuationShader();
    }
    
    vertex_shader.Create(GL_VERTEX_SHADER, {kVertexShaderSource});
    fragment_shader.Create(GL_FRAGMENT_SHADER, {kFragmentShaderSource});
    face_program.Create({&vertex_shader, &fragment_shader});
    face_program.CompileAndLink();

    vertex_format.Create({
      {u8"vertex_position", GL_FLOAT, 2}
    });

    unit_circle.data.insert(unit_circle.data.cend(), {
      0.0f, 0.0f
    });
    for (auto i = 0.0f; i < 101.0f; ++i) {
      const auto theta = 2.0f * i / 100.0f * M_PI;
      const auto point = glm::vec2(glm::cos(theta), glm::sin(theta));
      unit_circle.data.insert(unit_circle.data.cend(), {
        point.x, point.y
      });
    }
    unit_circle.element_count = 102;
    unit_circle.element_type = GL_TRIANGLE_FAN;

    unit_square.data.insert(unit_square.data.cend(), {
      0.5f, -0.5f,
      0.5f, 0.5f,
      -0.5f, -0.5f,
      -0.5f, 0.5f
    });
    unit_square.element_count = 4;
    unit_square.element_type = GL_TRIANGLE_STRIP;
    
    circle_buffer.Create(GL_ARRAY_BUFFER);
    circle_buffer.Data(unit_circle.data_size(), unit_circle.data.data(), GL_STATIC_DRAW);
    circle_array.Create();
    vertex_format.Apply(circle_array, face_program);
    CHECK_STATE(!glGetError());

    rectangle_buffer.Create(GL_ARRAY_BUFFER);
    rectangle_buffer.Data(unit_square.data_size(), unit_square.data.data(), GL_STATIC_DRAW);
    rectangle_array.Create();
    vertex_format.Apply(rectangle_array, face_program);
    CHECK_STATE(!glGetError());

    stroke_width = 0.0025f;
    stroke = glm::vec4(0, 0, 0, 1);
    fill = glm::vec4(0.5, 0.5, 0.5, 1);

    CHECK_STATE(imguiRenderGLInit("../resource/fonts/ubuntu-font-family-0.80/Ubuntu-R.ttf"));
  }
Example #4
0
static void sCreateUI()
{
	ui.showMenu = true;
	ui.scroll = 0;
	ui.scrollarea1 = 0;
	ui.chooseTest = false;
	ui.mouseOverMenu = false;

	// Init UI
	if (!imguiRenderGLInit("DroidSans.ttf"))
	{
		fprintf(stderr, "Could not init GUI renderer.\n");
		assert(false);
		return;
	}
}
Example #5
0
int main(int /*argc*/, char** /*argv*/)
{
	// Init SDL
	if (SDL_Init(SDL_INIT_EVERYTHING) != 0)
	{
		printf("Could not initialise SDL\n");
		return -1;
	}
	
	// Center window
	char env[] = "SDL_VIDEO_CENTERED=1";
	putenv(env);

	// Init OpenGL
	SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
	SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
	SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
	SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
	SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
	SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
//#ifndef WIN32
	SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
	SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4);
//#endif

	const SDL_VideoInfo* vi = SDL_GetVideoInfo();

	bool presentationMode = false;

	int width, height;
	SDL_Surface* screen = 0;
	
	if (presentationMode)
	{
        width = 1700;
        height = 1000;
		screen = SDL_SetVideoMode(width, height, 0, SDL_OPENGL|SDL_FULLSCREEN);
	}
	else
	{	
        width = 1700;
        height = 1000;
		screen = SDL_SetVideoMode(width, height, 0, SDL_OPENGL);
	}
	
	if (!screen)
	{
		printf("Could not initialise SDL opengl\n");
		return -1;
	}

	glEnable(GL_MULTISAMPLE);

	SDL_WM_SetCaption("Recast Demo", 0);
	
	if (!imguiRenderGLInit("DroidSans.ttf"))
	{
		printf("Could not init GUI renderer.\n");
		SDL_Quit();
		return -1;
	}
	
	float t = 0.0f;
	float timeAcc = 0.0f;
	Uint32 lastTime = SDL_GetTicks();
	int mx = 0, my = 0;
	float rx = 45;
	float ry = -45;
	float moveW = 0, moveS = 0, moveA = 0, moveD = 0;
	float camx = 0, camy = 0, camz = 0, camr = 1000;
	float origrx = 0, origry = 0;
	int origx = 0, origy = 0;
	float scrollZoom = 0;
	bool rotate = false;
	bool movedDuringRotate = false;
	float rays[3], raye[3]; 
	bool mouseOverMenu = false;
	bool showMenu = !presentationMode;
	bool showLog = false;
	bool showTools = true;
	bool showLevels = false;
	bool showSample = false;
	bool showTestCases = false;

	int propScroll = 0;
	int logScroll = 0;
	int toolsScroll = 0;
	
	char sampleName[64] = "Choose Sample..."; 
	
	FileList files;
	char meshName[128] = "Choose Mesh...";
	
	float mpos[3] = {0,0,0};
	bool mposSet = false;
	
	SlideShow slideShow;
	slideShow.init("slides/");
	
	InputGeom* geom = 0;
	Sample* sample = 0;
	TestCase* test = 0;

	BuildContext ctx;
	
	glEnable(GL_CULL_FACE);
	
	float fogCol[4] = { 0.32f, 0.31f, 0.30f, 1.0f };
	glEnable(GL_FOG);
	glFogi(GL_FOG_MODE, GL_LINEAR);
	glFogf(GL_FOG_START, camr*0.1f);
	glFogf(GL_FOG_END, camr*1.25f);
	glFogfv(GL_FOG_COLOR, fogCol);
	
	glDepthFunc(GL_LEQUAL);
	
	bool done = false;
	while(!done)
	{
		// Handle input events.
		int mscroll = 0;
		bool processHitTest = false;
		bool processHitTestShift = false;
		SDL_Event event;
		
		while (SDL_PollEvent(&event))
		{
			switch (event.type)
			{
				case SDL_KEYDOWN:
					// Handle any key presses here.
					if (event.key.keysym.sym == SDLK_ESCAPE)
					{
						done = true;
					}
					else if (event.key.keysym.sym == SDLK_t)
					{
						showLevels = false;
						showSample = false;
						showTestCases = true;
						scanDirectory("Tests", ".txt", files);
					}
					else if (event.key.keysym.sym == SDLK_TAB)
					{
						showMenu = !showMenu;
					}
					else if (event.key.keysym.sym == SDLK_SPACE)
					{
						if (sample)
							sample->handleToggle();
					}
					else if (event.key.keysym.sym == SDLK_1)
					{
						if (sample)
							sample->handleStep();
					}
					else if (event.key.keysym.sym == SDLK_9)
					{
						if (geom)
							geom->save("geomset.txt");
					}
					else if (event.key.keysym.sym == SDLK_0)
					{
						delete geom;
						geom = new InputGeom;
						if (!geom || !geom->load(&ctx, "geomset.txt"))
						{
							delete geom;
							geom = 0;
							
							showLog = true;
							logScroll = 0;
							ctx.dumpLog("Geom load log %s:", meshName);
						}
						if (sample && geom)
						{
							sample->handleMeshChanged(geom);
						}
							
						if (geom || sample)
						{
							const float* bmin = 0;
							const float* bmax = 0;
							if (sample)
							{
								bmin = sample->getBoundsMin();
								bmax = sample->getBoundsMax();
							}
							else if (geom)
							{
								bmin = geom->getMeshBoundsMin();
								bmax = geom->getMeshBoundsMax();
							}
							// Reset camera and fog to match the mesh bounds.
							if (bmin && bmax)
							{
								camr = sqrtf(rcSqr(bmax[0]-bmin[0]) +
											 rcSqr(bmax[1]-bmin[1]) +
											 rcSqr(bmax[2]-bmin[2])) / 2;
								camx = (bmax[0] + bmin[0]) / 2 + camr;
								camy = (bmax[1] + bmin[1]) / 2 + camr;
								camz = (bmax[2] + bmin[2]) / 2 + camr;
								camr *= 3;
							}
							rx = 45;
							ry = -45;
							glFogf(GL_FOG_START, camr*0.2f);
							glFogf(GL_FOG_END, camr*1.25f);
						}
					}
					else if (event.key.keysym.sym == SDLK_RIGHT)
					{
						slideShow.nextSlide();
					}
					else if (event.key.keysym.sym == SDLK_LEFT)
					{
						slideShow.prevSlide();
					}
					break;
					
				case SDL_MOUSEBUTTONDOWN:
					if (event.button.button == SDL_BUTTON_RIGHT)
					{
						if (!mouseOverMenu)
						{
							// Rotate view
							rotate = true;
							movedDuringRotate = false;
							origx = mx;
							origy = my;
							origrx = rx;
							origry = ry;
						}
					}	
					else if (event.button.button == SDL_BUTTON_WHEELUP)
					{
						if (mouseOverMenu)
							mscroll--;
						else
							scrollZoom -= 1.0f;
					}
					else if (event.button.button == SDL_BUTTON_WHEELDOWN)
					{
						if (mouseOverMenu)
							mscroll++;
						else
							scrollZoom += 1.0f;
					}
					break;
					
				case SDL_MOUSEBUTTONUP:
					// Handle mouse clicks here.
					if (event.button.button == SDL_BUTTON_RIGHT)
					{
						rotate = false;
						if (!mouseOverMenu)
						{
							if (!movedDuringRotate)
							{
								processHitTest = true;
								processHitTestShift = true;
							}
						}
					}
					else if (event.button.button == SDL_BUTTON_LEFT)
					{
						if (!mouseOverMenu)
						{
							processHitTest = true;
							processHitTestShift = (SDL_GetModState() & KMOD_SHIFT) ? true : false;
						}
					}
					
					break;
					
				case SDL_MOUSEMOTION:
					mx = event.motion.x;
					my = height-1 - event.motion.y;
					if (rotate)
					{
						int dx = mx - origx;
						int dy = my - origy;
						rx = origrx - dy*0.25f;
						ry = origry + dx*0.25f;
						if (dx*dx+dy*dy > 3*3)
							movedDuringRotate = true;
					}
					break;
					
				case SDL_QUIT:
					done = true;
					break;
					
				default:
					break;
			}
		}

		unsigned char mbut = 0;
		if (SDL_GetMouseState(0,0) & SDL_BUTTON_LMASK)
			mbut |= IMGUI_MBUT_LEFT;
		if (SDL_GetMouseState(0,0) & SDL_BUTTON_RMASK)
			mbut |= IMGUI_MBUT_RIGHT;
		
		Uint32	time = SDL_GetTicks();
		float	dt = (time - lastTime) / 1000.0f;
		lastTime = time;
		
		t += dt;


		// Hit test mesh.
		if (processHitTest && geom && sample)
		{
			float hitt;
			bool hit = geom->raycastMesh(rays, raye, hitt);
			
			if (hit)
			{
				if (SDL_GetModState() & KMOD_CTRL)
				{
					// Marker
					mposSet = true;
					mpos[0] = rays[0] + (raye[0] - rays[0])*hitt;
					mpos[1] = rays[1] + (raye[1] - rays[1])*hitt;
					mpos[2] = rays[2] + (raye[2] - rays[2])*hitt;
				}
				else
				{
					float pos[3];
					pos[0] = rays[0] + (raye[0] - rays[0])*hitt;
					pos[1] = rays[1] + (raye[1] - rays[1])*hitt;
					pos[2] = rays[2] + (raye[2] - rays[2])*hitt;
					sample->handleClick(rays, pos, processHitTestShift);
				}
			}
			else
			{
				if (SDL_GetModState() & KMOD_CTRL)
				{
					// Marker
					mposSet = false;
				}
			}
		}
		
		// Update sample simulation.
		const float SIM_RATE = 20;
		const float DELTA_TIME = 1.0f/SIM_RATE;
		timeAcc = rcClamp(timeAcc+dt, -1.0f, 1.0f);
		int simIter = 0;
		while (timeAcc > DELTA_TIME)
		{
			timeAcc -= DELTA_TIME;
			if (simIter < 5)
			{
				if (sample)
					sample->handleUpdate(DELTA_TIME);
			}
			simIter++;
		}

		// Clamp the framerate so that we do not hog all the CPU.
		const float MIN_FRAME_TIME = 1.0f/40.0f;
		if (dt < MIN_FRAME_TIME)
		{
			int ms = (int)((MIN_FRAME_TIME - dt)*1000.0f);
			if (ms > 10) ms = 10;
			if (ms >= 0)
				SDL_Delay(ms);
		}
		
		
		// Update and render
		glViewport(0, 0, width, height);
		glClearColor(0.3f, 0.3f, 0.32f, 1.0f);
		glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
		glDisable(GL_TEXTURE_2D);
		
		// Render 3d
		glEnable(GL_DEPTH_TEST);
		glMatrixMode(GL_PROJECTION);
		glLoadIdentity();
		gluPerspective(50.0f, (float)width/(float)height, 1.0f, camr);
		glMatrixMode(GL_MODELVIEW);
		glLoadIdentity();
		glRotatef(rx,1,0,0);
		glRotatef(ry,0,1,0);
		glTranslatef(-camx, -camy, -camz);
		
		// Get hit ray position and direction.
		GLdouble proj[16];
		GLdouble model[16];
		GLint view[4];
		glGetDoublev(GL_PROJECTION_MATRIX, proj);
		glGetDoublev(GL_MODELVIEW_MATRIX, model);
		glGetIntegerv(GL_VIEWPORT, view);
		GLdouble x, y, z;
		gluUnProject(mx, my, 0.0f, model, proj, view, &x, &y, &z);
		rays[0] = (float)x; rays[1] = (float)y; rays[2] = (float)z;
		gluUnProject(mx, my, 1.0f, model, proj, view, &x, &y, &z);
		raye[0] = (float)x; raye[1] = (float)y; raye[2] = (float)z;
		
		// Handle keyboard movement.
		Uint8* keystate = SDL_GetKeyState(NULL);
		moveW = rcClamp(moveW + dt * 4 * (keystate[SDLK_w] ? 1 : -1), 0.0f, 1.0f);
		moveS = rcClamp(moveS + dt * 4 * (keystate[SDLK_s] ? 1 : -1), 0.0f, 1.0f);
		moveA = rcClamp(moveA + dt * 4 * (keystate[SDLK_a] ? 1 : -1), 0.0f, 1.0f);
		moveD = rcClamp(moveD + dt * 4 * (keystate[SDLK_d] ? 1 : -1), 0.0f, 1.0f);
		
		float keybSpeed = 22.0f;
		if (SDL_GetModState() & KMOD_SHIFT)
			keybSpeed *= 4.0f;
		
		float movex = (moveD - moveA) * keybSpeed * dt;
		float movey = (moveS - moveW) * keybSpeed * dt;
		
		movey += scrollZoom * 2.0f;
		scrollZoom = 0;
		
		camx += movex * (float)model[0];
		camy += movex * (float)model[4];
		camz += movex * (float)model[8];
		
		camx += movey * (float)model[2];
		camy += movey * (float)model[6];
		camz += movey * (float)model[10];

		glEnable(GL_FOG);

		if (sample)
			sample->handleRender();
		if (test)
			test->handleRender();
		
		glDisable(GL_FOG);
		
		// Render GUI
		glDisable(GL_DEPTH_TEST);
		glMatrixMode(GL_PROJECTION);
		glLoadIdentity();
		gluOrtho2D(0, width, 0, height);
		glMatrixMode(GL_MODELVIEW);
		glLoadIdentity();
		
		mouseOverMenu = false;
		
		imguiBeginFrame(mx,my,mbut,mscroll);
		
		if (sample)
		{
			sample->handleRenderOverlay((double*)proj, (double*)model, (int*)view);
		}
		if (test)
		{
			if (test->handleRenderOverlay((double*)proj, (double*)model, (int*)view))
				mouseOverMenu = true;
		}

		// Help text.
		if (showMenu)
		{
			const char msg[] = "W/S/A/D: Move  RMB: Rotate";
			imguiDrawText(280, height-20, IMGUI_ALIGN_LEFT, msg, imguiRGBA(255,255,255,128));
		}
		
		if (showMenu)
		{
			if (imguiBeginScrollArea("Properties", width-250-10, 10, 250, height-20, &propScroll))
				mouseOverMenu = true;

			if (imguiCheck("Show Log", showLog))
				showLog = !showLog;
			if (imguiCheck("Show Tools", showTools))
				showTools = !showTools;

			imguiSeparator();
			imguiLabel("Sample");
			if (imguiButton(sampleName))
			{
				if (showSample)
				{
					showSample = false;
				}
				else
				{
					showSample = true;
					showLevels = false;
					showTestCases = false;
				}
			}
			
			imguiSeparator();
			imguiLabel("Input Mesh");
			if (imguiButton(meshName))
			{
				if (showLevels)
				{
					showLevels = false;
				}
				else
				{
					showSample = false;
					showTestCases = false;
					showLevels = true;
					scanDirectory("Meshes", ".obj", files);
				}
			}
			if (geom)
			{
				char text[64];
				snprintf(text, 64, "Verts: %.1fk  Tris: %.1fk",
						 geom->getMesh()->getVertCount()/1000.0f,
						 geom->getMesh()->getTriCount()/1000.0f);
				imguiValue(text);
			}
			imguiSeparator();

			if (geom && sample)
			{
				imguiSeparatorLine();
				
				sample->handleSettings();

				if (imguiButton("Build"))
				{
					ctx.resetLog();
					if (!sample->handleBuild())
					{
						showLog = true;
						logScroll = 0;
					}
					ctx.dumpLog("Build log %s:", meshName);
					
					// Clear test.
					delete test;
					test = 0;
				}

				imguiSeparator();
			}
			
			if (sample)
			{
				imguiSeparatorLine();
				sample->handleDebugMode();
			}

			imguiEndScrollArea();
		}
		
		// Sample selection dialog.
		if (showSample)
		{
			static int levelScroll = 0;
			if (imguiBeginScrollArea("Choose Sample", width-10-250-10-200, height-10-250, 200, 250, &levelScroll))
				mouseOverMenu = true;

			Sample* newSample = 0;
			for (int i = 0; i < g_nsamples; ++i)
			{
				if (imguiItem(g_samples[i].name))
				{
					newSample = g_samples[i].create();
					if (newSample)
						strcpy(sampleName, g_samples[i].name);
				}
			}
			if (newSample)
			{
				delete sample;
				sample = newSample;
				sample->setContext(&ctx);
				if (geom && sample)
				{
					sample->handleMeshChanged(geom);
				}
				showSample = false;
			}

			if (geom || sample)
			{
				const float* bmin = 0;
				const float* bmax = 0;
				if (sample)
				{
					bmin = sample->getBoundsMin();
					bmax = sample->getBoundsMax();
				}
				else if (geom)
				{
					bmin = geom->getMeshBoundsMin();
					bmax = geom->getMeshBoundsMax();
				}
				// Reset camera and fog to match the mesh bounds.
				if (bmin && bmax)
				{
					camr = sqrtf(rcSqr(bmax[0]-bmin[0]) +
								 rcSqr(bmax[1]-bmin[1]) +
								 rcSqr(bmax[2]-bmin[2])) / 2;
					camx = (bmax[0] + bmin[0]) / 2 + camr;
					camy = (bmax[1] + bmin[1]) / 2 + camr;
					camz = (bmax[2] + bmin[2]) / 2 + camr;
					camr *= 3;
				}
				rx = 45;
				ry = -45;
				glFogf(GL_FOG_START, camr*0.1f);
				glFogf(GL_FOG_END, camr*1.25f);
			}
			
			imguiEndScrollArea();
		}
		
		// Level selection dialog.
		if (showLevels)
		{
			static int levelScroll = 0;
			if (imguiBeginScrollArea("Choose Level", width-10-250-10-200, height-10-450, 200, 450, &levelScroll))
				mouseOverMenu = true;
			
			int levelToLoad = -1;
			for (int i = 0; i < files.size; ++i)
			{
				if (imguiItem(files.files[i]))
					levelToLoad = i;
			}
			
			if (levelToLoad != -1)
			{
				strncpy(meshName, files.files[levelToLoad], sizeof(meshName));
				meshName[sizeof(meshName)-1] = '\0';
				showLevels = false;
				
				delete geom;
				geom = 0;
				
				char path[256];
				strcpy(path, "Meshes/");
				strcat(path, meshName);
				
				geom = new InputGeom;
				if (!geom || !geom->loadMesh(&ctx, path))
				{
					delete geom;
					geom = 0;
					
					showLog = true;
					logScroll = 0;
					ctx.dumpLog("Geom load log %s:", meshName);
				}
				if (sample && geom)
				{
					sample->handleMeshChanged(geom);
				}

				if (geom || sample)
				{
					const float* bmin = 0;
					const float* bmax = 0;
					if (sample)
					{
						bmin = sample->getBoundsMin();
						bmax = sample->getBoundsMax();
					}
					else if (geom)
					{
						bmin = geom->getMeshBoundsMin();
						bmax = geom->getMeshBoundsMax();
					}
					// Reset camera and fog to match the mesh bounds.
					if (bmin && bmax)
					{
						camr = sqrtf(rcSqr(bmax[0]-bmin[0]) +
									 rcSqr(bmax[1]-bmin[1]) +
									 rcSqr(bmax[2]-bmin[2])) / 2;
						camx = (bmax[0] + bmin[0]) / 2 + camr;
						camy = (bmax[1] + bmin[1]) / 2 + camr;
						camz = (bmax[2] + bmin[2]) / 2 + camr;
						camr *= 3;
					}
					rx = 45;
					ry = -45;
					glFogf(GL_FOG_START, camr*0.1f);
					glFogf(GL_FOG_END, camr*1.25f);
				}
			}
			
			imguiEndScrollArea();
			
		}
		
		// Test cases
		if (showTestCases)
		{
			static int testScroll = 0;
			if (imguiBeginScrollArea("Choose Test To Run", width-10-250-10-200, height-10-450, 200, 450, &testScroll))
				mouseOverMenu = true;

			int testToLoad = -1;
			for (int i = 0; i < files.size; ++i)
			{
				if (imguiItem(files.files[i]))
					testToLoad = i;
			}
			
			if (testToLoad != -1)
			{
				char path[256];
				strcpy(path, "Tests/");
				strcat(path, files.files[testToLoad]);
				test = new TestCase;
				if (test)
				{
					// Load the test.
					if (!test->load(path))
					{
						delete test;
						test = 0;
					}

					// Create sample
					Sample* newSample = 0;
					for (int i = 0; i < g_nsamples; ++i)
					{
						if (strcmp(g_samples[i].name, test->getSampleName()) == 0)
						{
							newSample = g_samples[i].create();
							if (newSample) strcpy(sampleName, g_samples[i].name);
						}
					}
					if (newSample)
					{
						delete sample;
						sample = newSample;
						sample->setContext(&ctx);
						showSample = false;
					}

					// Load geom.
					strcpy(meshName, test->getGeomFileName());
					meshName[sizeof(meshName)-1] = '\0';
					
					delete geom;
					geom = 0;
					
					strcpy(path, "Meshes/");
					strcat(path, meshName);
					
					geom = new InputGeom;
					if (!geom || !geom->loadMesh(&ctx, path))
					{
						delete geom;
						geom = 0;
						showLog = true;
						logScroll = 0;
						ctx.dumpLog("Geom load log %s:", meshName);
					}
					if (sample && geom)
					{
						sample->handleMeshChanged(geom);
					}

					// This will ensure that tile & poly bits are updated in tiled sample.
					if (sample)
						sample->handleSettings();

					ctx.resetLog();
					if (sample && !sample->handleBuild())
					{
						ctx.dumpLog("Build log %s:", meshName);
					}
					
					if (geom || sample)
					{
						const float* bmin = 0;
						const float* bmax = 0;
						if (sample)
						{
							bmin = sample->getBoundsMin();
							bmax = sample->getBoundsMax();
						}
						else if (geom)
						{
							bmin = geom->getMeshBoundsMin();
							bmax = geom->getMeshBoundsMax();
						}
						// Reset camera and fog to match the mesh bounds.
						if (bmin && bmax)
						{
							camr = sqrtf(rcSqr(bmax[0]-bmin[0]) +
										 rcSqr(bmax[1]-bmin[1]) +
										 rcSqr(bmax[2]-bmin[2])) / 2;
							camx = (bmax[0] + bmin[0]) / 2 + camr;
							camy = (bmax[1] + bmin[1]) / 2 + camr;
							camz = (bmax[2] + bmin[2]) / 2 + camr;
							camr *= 3;
						}
						rx = 45;
						ry = -45;
						glFogf(GL_FOG_START, camr*0.2f);
						glFogf(GL_FOG_END, camr*1.25f);
					}
					
					// Do the tests.
					if (sample)
						test->doTests(sample->getNavMesh(), sample->getNavMeshQuery());
				}
			}				
				
			imguiEndScrollArea();
		}

		
		// Log
		if (showLog && showMenu)
		{
			if (imguiBeginScrollArea("Log", 250+20, 10, width - 300 - 250, 200, &logScroll))
				mouseOverMenu = true;
			for (int i = 0; i < ctx.getLogCount(); ++i)
				imguiLabel(ctx.getLogText(i));
			imguiEndScrollArea();
		}
		
		// Tools
		if (!showTestCases && showTools && showMenu) // && geom && sample)
		{
			if (imguiBeginScrollArea("Tools", 10, 10, 250, height-20, &toolsScroll))
				mouseOverMenu = true;

			if (sample)
				sample->handleTools();
			
			imguiEndScrollArea();
		}
		
		slideShow.updateAndDraw(dt, (float)width, (float)height);
		
		// Marker
		if (mposSet && gluProject((GLdouble)mpos[0], (GLdouble)mpos[1], (GLdouble)mpos[2],
								  model, proj, view, &x, &y, &z))
		{
			// Draw marker circle
			glLineWidth(5.0f);
			glColor4ub(240,220,0,196);
			glBegin(GL_LINE_LOOP);
			const float r = 25.0f;
			for (int i = 0; i < 20; ++i)
			{
				const float a = (float)i / 20.0f * RC_PI*2;
				const float fx = (float)x + cosf(a)*r;
				const float fy = (float)y + sinf(a)*r;
				glVertex2f(fx,fy);
			}
			glEnd();
			glLineWidth(1.0f);
		}
		
		imguiEndFrame();
		imguiRenderGLDraw();		
		
		glEnable(GL_DEPTH_TEST);
		SDL_GL_SwapBuffers();
	}
	
	imguiRenderGLDestroy();
	
	SDL_Quit();
	
	delete sample;
	delete geom;
	
	return 0;
}
Example #6
0
int main( int argc, char **argv )
{
    int width = 1024, height=768;

    // Initialise GLFW
    if( !glfwInit() )
    {
        fprintf( stderr, "Failed to initialize GLFW\n" );
        exit( EXIT_FAILURE );
    }

    // Open a window and create its OpenGL context
    if( !glfwOpenWindow( width, height, 0,0,0,0, 24,0, GLFW_WINDOW ) )
    {
        fprintf( stderr, "Failed to open GLFW window\n" );
        glfwTerminate();
        exit( EXIT_FAILURE );
    }

    glfwSetWindowTitle( "imgui sample imguiRenderGL2" );
    GLenum err = glewInit();
    if (GLEW_OK != err)
    {
          /* Problem: glewInit failed, something is seriously wrong. */
          fprintf(stderr, "Error: %s\n", glewGetErrorString(err));
          exit( EXIT_FAILURE );
    }

    // Ensure we can capture the escape key being pressed below
    glfwEnable( GLFW_STICKY_KEYS );

    // Enable vertical sync (on cards that support it)
    glfwSwapInterval( 1 );

    // Init UI
    if (!imguiRenderGLInit("DroidSans.ttf"))
    {
        fprintf(stderr, "Could not init GUI renderer.\n");
        exit(EXIT_FAILURE);
    }

    glClearColor(0.8f, 0.8f, 0.8f, 1.f);
    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
    glDisable(GL_DEPTH_TEST);

    // imgui states
    bool checked1 = false;
    bool checked2 = false;
    bool checked3 = true;
    bool checked4 = false;
    float value1 = 50.f;
    float value2 = 30.f;
    int scrollarea1 = 0;
    int scrollarea2 = 0;

    // glfw scrolling
    int glfwscroll = 0;
    do
    {
        glfwGetWindowSize(&width, &height);
        glViewport(0, 0, width, height);

        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

        // Mouse states
        unsigned char mousebutton = 0;
        int currentglfwscroll = glfwGetMouseWheel();
        int mscroll = 0;
        if (currentglfwscroll < glfwscroll)
            mscroll = 2;
         if (currentglfwscroll > glfwscroll)
            mscroll = -2;
        glfwscroll = currentglfwscroll;
        int mousex; int mousey;
        glfwGetMousePos(&mousex, &mousey);
        mousey = height - mousey;
        int leftButton = glfwGetMouseButton( GLFW_MOUSE_BUTTON_LEFT );
        int rightButton = glfwGetMouseButton( GLFW_MOUSE_BUTTON_RIGHT );
        int middleButton = glfwGetMouseButton( GLFW_MOUSE_BUTTON_MIDDLE );
        int toggle = 0;
        if( leftButton == GLFW_PRESS )
            mousebutton |= IMGUI_MBUT_LEFT;
    
        // Draw UI
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        float projection[16] = { 2.f/width, 0.f, 0.f,  0.f,
                                 0.f, 2.f/height,  0.f,  0.f,
                                 0.f,  0.f, -2.f, 0.f,
                                 -1.f, -1.f,  -1.f,  1.f };
        glLoadMatrixf(projection);
        glMatrixMode(GL_MODELVIEW);
        glLoadIdentity();
        glUseProgram(0);


        imguiBeginFrame(mousex, mousey, mousebutton, mscroll);

        imguiBeginScrollArea("Scroll area", 10, 10, width / 5, height - 20, &scrollarea1);
        imguiSeparatorLine();
        imguiSeparator();

        imguiButton("Button");
        imguiButton("Disabled button", false);
        imguiItem("Item");
        imguiItem("Disabled item", false);
        toggle = imguiCheck("Checkbox", checked1);
        if (toggle)
            checked1 = !checked1;
        toggle = imguiCheck("Disabled checkbox", checked2, false);
        if (toggle)
            checked2 = !checked2;
        toggle = imguiCollapse("Collapse", "subtext", checked3);
        if (checked3)
        {
            imguiIndent();
            imguiLabel("Collapsible element");
            imguiUnindent();
        }
        if (toggle)
            checked3 = !checked3;
        toggle = imguiCollapse("Disabled collapse", "subtext", checked4, false);
        if (toggle)
            checked4 = !checked4;
        imguiLabel("Label");
        imguiValue("Value");
        imguiSlider("Slider", &value1, 0.f, 100.f, 1.f);
        imguiSlider("Disabled slider", &value2, 0.f, 100.f, 1.f, false);
        imguiIndent();
        imguiLabel("Indented");
        imguiUnindent();
        imguiLabel("Unindented");

        imguiEndScrollArea();

        imguiBeginScrollArea("Scroll area", 20 + width / 5, 500, width / 5, height - 510, &scrollarea2);
        imguiSeparatorLine();
        imguiSeparator();
        for (int i = 0; i < 100; ++i)
            imguiLabel("A wall of text");

        imguiEndScrollArea();
        imguiEndFrame();

        imguiDrawText(30 + width / 5 * 2, height - 20, IMGUI_ALIGN_LEFT, "Free text",  imguiRGBA(32,192, 32,192));
        imguiDrawText(30 + width / 5 * 2 + 100, height - 40, IMGUI_ALIGN_RIGHT, "Free text",  imguiRGBA(32, 32, 192, 192));
        imguiDrawText(30 + width / 5 * 2 + 50, height - 60, IMGUI_ALIGN_CENTER, "Free text",  imguiRGBA(192, 32, 32,192));

        imguiDrawLine(30 + width / 5 * 2, height - 80, 30 + width / 5 * 2 + 100, height - 60, 1.f, imguiRGBA(32,192, 32,192));
        imguiDrawLine(30 + width / 5 * 2, height - 100, 30 + width / 5 * 2 + 100, height - 80, 2.f, imguiRGBA(32, 32, 192, 192));
        imguiDrawLine(30 + width / 5 * 2, height - 120, 30 + width / 5 * 2 + 100, height - 100, 3.f, imguiRGBA(192, 32, 32,192));

        imguiDrawRoundedRect(30 + width / 5 * 2, height - 240, 100, 100, 5.f, imguiRGBA(32,192, 32,192));
        imguiDrawRoundedRect(30 + width / 5 * 2, height - 350, 100, 100, 10.f, imguiRGBA(32, 32, 192, 192));
        imguiDrawRoundedRect(30 + width / 5 * 2, height - 470, 100, 100, 20.f, imguiRGBA(192, 32, 32,192));
        
        imguiDrawRect(30 + width / 5 * 2, height - 590, 100, 100, imguiRGBA(32, 192, 32, 192));
        imguiDrawRect(30 + width / 5 * 2, height - 710, 100, 100, imguiRGBA(32, 32, 192, 192));
        imguiDrawRect(30 + width / 5 * 2, height - 830, 100, 100, imguiRGBA(192, 32, 32,192));

        imguiRenderGLDraw(width, height); 

        // Check for errors
        GLenum err = glGetError();
        if(err != GL_NO_ERROR)
        {
            fprintf(stderr, "OpenGL Error : %s\n", gluErrorString(err));
        }

        // Swap buffers
        glfwSwapBuffers();

    } // Check if the ESC key was pressed or the window was closed
    while( glfwGetKey( GLFW_KEY_ESC ) != GLFW_PRESS &&
           glfwGetWindowParam( GLFW_OPENED ) );

    // Clean UI
    imguiRenderGLDestroy();

    // Close OpenGL window and terminate GLFW
    glfwTerminate();

    exit( EXIT_SUCCESS );
}
Example #7
0
int main( int argc, char **argv )
{
    int width = 800, height= 600;
    float widthf = (float) width, heightf = (float) height;
    double t;
    float fps = 0.f;

    // Initialise GLFW
    if( !glfwInit() )
    {
        fprintf( stderr, "Failed to initialize GLFW\n" );
        exit( EXIT_FAILURE );
    }

    // Force core profile on Mac OSX
#ifdef __APPLE__
    glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
    glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
    glfwOpenWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
    glfwOpenWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
#endif
    // Open a window and create its OpenGL context
    if( !glfwOpenWindow( width, height, 0,0,0,0, 24, 0, GLFW_WINDOW ) )
    {
        fprintf( stderr, "Failed to open GLFW window\n" );

        glfwTerminate();
        exit( EXIT_FAILURE );
    }

    glfwSetWindowTitle( "001_a" );

    // Core profile is flagged as experimental in glew
#ifdef __APPLE__
    glewExperimental = GL_TRUE;
#endif
    GLenum err = glewInit();
    if (GLEW_OK != err)
    {
          /* Problem: glewInit failed, something is seriously wrong. */
          fprintf(stderr, "Error: %s\n", glewGetErrorString(err));
          exit( EXIT_FAILURE );
    }

    // Ensure we can capture the escape key being pressed below
    glfwEnable( GLFW_STICKY_KEYS );

    // Enable vertical sync (on cards that support it)
    glfwSwapInterval( 1 );
    GLenum glerr = GL_NO_ERROR;
    glerr = glGetError();

    if (!imguiRenderGLInit(DroidSans_ttf, DroidSans_ttf_len))
    {
        fprintf(stderr, "Could not init GUI renderer.\n");
        exit(EXIT_FAILURE);
    }

    // Init viewer structures
    Camera camera;
    camera_defaults(camera);
    GUIStates guiStates;
    init_gui_states(guiStates);
    float dummySlider = 0.f;

    // Load images and upload textures
    GLuint textures[2];
    glGenTextures(2, textures);
    int x;
    int y;
    int comp;

    unsigned char * diffuse = stbi_load("textures/spnza_bricks_a_diff.tga", &x, &y, &comp, 3);
    glActiveTexture(GL_TEXTURE0);
    glBindTexture(GL_TEXTURE_2D, textures[0]);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, x, y, 0, GL_RGB, GL_UNSIGNED_BYTE, diffuse);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    fprintf(stderr, "Diffuse %dx%d:%d\n", x, y, comp);

    unsigned char * spec = stbi_load("textures/spnza_bricks_a_spec.tga", &x, &y, &comp, 1);
    glActiveTexture(GL_TEXTURE1);
    glBindTexture(GL_TEXTURE_2D, textures[1]);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, x, y, 0, GL_RED, GL_UNSIGNED_BYTE, spec);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    fprintf(stderr, "Spec %dx%d:%d\n", x, y, comp);
    glerr = glGetError();
    if(glerr != GL_NO_ERROR)
        fprintf(stderr, "2nd OpenGL Error : %s\n", gluErrorString(glerr));

    // Try to load and compile shader
    ShaderGLSL shader;
    const char * shaderFile = "001/3a.glsl";
    //const char * shaderFile = "001/4a.glsl";
    //const char * shaderFile = "001/5a.glsl";
    //const char * shaderFile = "001/5ba.glsl";
    //const char * shaderFile = "001/6a.glsl";
    //const char * shaderFile = "001/7a.glsl";
    //const char * shaderFile = "001/8a.glsl";
    //int status = load_shader_from_file(shader, shaderFile, ShaderGLSL::VERTEX_SHADER | ShaderGLSL::FRAGMENT_SHADER | ShaderGLSL::GEOMETRY_SHADER);
    int status = load_shader_from_file(shader, shaderFile, ShaderGLSL::VERTEX_SHADER | ShaderGLSL::FRAGMENT_SHADER);
    if ( status == -1 )
    {
        fprintf(stderr, "Error on loading  %s\n", shaderFile);
        exit( EXIT_FAILURE );
    }

    // Apply shader
    GLuint program = shader.program;
    glUseProgram(program);
    GLuint projectionLocation = glGetUniformLocation(program, "Projection");
    GLuint viewLocation = glGetUniformLocation(program, "View");
    GLuint objectLocation = glGetUniformLocation(program, "Object");
    GLuint timeLocation = glGetUniformLocation(program, "Time");
    GLuint diffuseLocation = glGetUniformLocation(program, "Diffuse");
    GLuint specLocation = glGetUniformLocation(program, "Spec");
    GLuint cameraPositionLocation = glGetUniformLocation(program, "CameraPosition");
    glUniform1i(diffuseLocation, 0);
    glUniform1i(specLocation, 1);


    // Load geometry
    int cube_triangleCount = 12;
    int cube_triangleList[] = {0, 1, 2, 2, 1, 3, 4, 5, 6, 6, 5, 7, 8, 9, 10, 10, 9, 11, 12, 13, 14, 14, 13, 15, 16, 17, 18, 19, 17, 20, 21, 22, 23, 24, 25, 26, };
    float cube_uvs[] = {0.f, 0.f, 0.f, 1.f, 1.f, 0.f, 1.f, 1.f, 0.f, 0.f, 0.f, 1.f, 1.f, 0.f, 1.f, 1.f, 0.f, 0.f, 0.f, 1.f, 1.f, 0.f, 1.f, 1.f, 0.f, 0.f, 0.f, 1.f, 1.f, 0.f, 1.f, 1.f, 0.f, 0.f, 0.f, 1.f, 1.f, 0.f,  1.f, 0.f,  1.f, 1.f,  0.f, 1.f,  1.f, 1.f,  0.f, 0.f, 0.f, 0.f, 1.f, 1.f,  1.f, 0.f,  };
    float cube_vertices[] = {-0.5, -0.5, 0.5, 0.5, -0.5, 0.5, -0.5, 0.5, 0.5, 0.5, 0.5, 0.5, -0.5, 0.5, 0.5, 0.5, 0.5, 0.5, -0.5, 0.5, -0.5, 0.5, 0.5, -0.5, -0.5, 0.5, -0.5, 0.5, 0.5, -0.5, -0.5, -0.5, -0.5, 0.5, -0.5, -0.5, -0.5, -0.5, -0.5, 0.5, -0.5, -0.5, -0.5, -0.5, 0.5, 0.5, -0.5, 0.5, 0.5, -0.5, 0.5, 0.5, -0.5, -0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, -0.5, -0.5, -0.5, -0.5, -0.5, -0.5, 0.5, -0.5, 0.5, -0.5, -0.5, 0.5, -0.5, -0.5, -0.5, 0.5, -0.5, 0.5, 0.5 };
    float cube_normals[] = {0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, };
    int plane_triangleCount = 2;
    int plane_triangleList[] = {0, 1, 2, 2, 1, 3}; 
    float plane_uvs[] = {0.f, 0.f, 0.f, 1.f, 1.f, 0.f, 1.f, 1.f};
    float plane_vertices[] = {-5.0, -1.0, 5.0, 5.0, -1.0, 5.0, -5.0, -1.0, -5.0, 5.0, -1.0, -5.0};
    float plane_normals[] = {0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0};

    // Vertex Array Object
    GLuint vao[2];
    glGenVertexArrays(2, vao);

    // Vertex Buffer Objects
    GLuint vbo[8];
    glGenBuffers(8, vbo);

    // Cube
    glBindVertexArray(vao[0]);
    // Bind indices and upload data
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbo[0]);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(cube_triangleList), cube_triangleList, GL_STATIC_DRAW);
    // Bind vertices and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[1]);
    glEnableVertexAttribArray(0);
    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*3, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(cube_vertices), cube_vertices, GL_STATIC_DRAW);
    // Bind normals and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[2]);
    glEnableVertexAttribArray(1);
    glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*3, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(cube_normals), cube_normals, GL_STATIC_DRAW);
    // Bind uv coords and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[3]);
    glEnableVertexAttribArray(2);
    glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*2, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(cube_uvs), cube_uvs, GL_STATIC_DRAW);

    // Plane
    glBindVertexArray(vao[1]);
    // Bind indices and upload data
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbo[4]);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(plane_triangleList), plane_triangleList, GL_STATIC_DRAW);
    // Bind vertices and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[5]);
    glEnableVertexAttribArray(0);
    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*3, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(plane_vertices), plane_vertices, GL_STATIC_DRAW);
    // Bind normals and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[6]);
    glEnableVertexAttribArray(1);
    glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*3, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(plane_normals), plane_normals, GL_STATIC_DRAW);
    // Bind uv coords and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[7]);
    glEnableVertexAttribArray(2);
    glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*2, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(plane_uvs), plane_uvs, GL_STATIC_DRAW);

    // Unbind everything. Potentially illegal on some implementations
    glBindVertexArray(0);
    glBindBuffer(GL_ARRAY_BUFFER, 0);

    // Viewport 
    glViewport( 0, 0, width, height  );

    do
    {
        t = glfwGetTime();

        // Mouse states
        int leftButton = glfwGetMouseButton( GLFW_MOUSE_BUTTON_LEFT );
        int rightButton = glfwGetMouseButton( GLFW_MOUSE_BUTTON_RIGHT );
        int middleButton = glfwGetMouseButton( GLFW_MOUSE_BUTTON_MIDDLE );

        if( leftButton == GLFW_PRESS )
            guiStates.turnLock = true;
        else
            guiStates.turnLock = false;

        if( rightButton == GLFW_PRESS )
            guiStates.zoomLock = true;
        else
            guiStates.zoomLock = false;

        if( middleButton == GLFW_PRESS )
            guiStates.panLock = true;
        else
            guiStates.panLock = false;

        // Camera movements
        int altPressed = glfwGetKey(GLFW_KEY_LSHIFT);
        if (!altPressed && (leftButton == GLFW_PRESS || rightButton == GLFW_PRESS || middleButton == GLFW_PRESS))
        {
            int x; int y;
            glfwGetMousePos(&x, &y);
            guiStates.lockPositionX = x;
            guiStates.lockPositionY = y;
        }
        if (altPressed == GLFW_PRESS)
        {
            int mousex; int mousey;
            glfwGetMousePos(&mousex, &mousey);
            int diffLockPositionX = mousex - guiStates.lockPositionX;
            int diffLockPositionY = mousey - guiStates.lockPositionY;
            if (guiStates.zoomLock)
            {
                float zoomDir = 0.0;
                if (diffLockPositionX > 0)
                    zoomDir = -1.f;
                else if (diffLockPositionX < 0 )
                    zoomDir = 1.f;
                camera_zoom(camera, zoomDir * GUIStates::MOUSE_ZOOM_SPEED);
            }
            else if (guiStates.turnLock)
            {
                camera_turn(camera, diffLockPositionY * GUIStates::MOUSE_TURN_SPEED,
                            diffLockPositionX * GUIStates::MOUSE_TURN_SPEED);

            }
            else if (guiStates.panLock)
            {
                camera_pan(camera, diffLockPositionX * GUIStates::MOUSE_PAN_SPEED,
                            diffLockPositionY * GUIStates::MOUSE_PAN_SPEED);
            }
            guiStates.lockPositionX = mousex;
            guiStates.lockPositionY = mousey;
        }

        // Default states
        glEnable(GL_DEPTH_TEST);

        // Clear the front buffer
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

        // Get camera matrices
        glm::mat4 projection = glm::perspective(45.0f, widthf / heightf, 0.1f, 100.f); 
        glm::mat4 worldToView = glm::lookAt(camera.eye, camera.o, camera.up);
        glm::mat4 objectToWorld;

        // Select textures
        glActiveTexture(GL_TEXTURE0);
        glBindTexture(GL_TEXTURE_2D, textures[0]);
        glActiveTexture(GL_TEXTURE1);
        glBindTexture(GL_TEXTURE_2D, textures[1]);

        // Select shader
        glUseProgram(program);

        // Upload uniforms
        glUniformMatrix4fv(projectionLocation, 1, 0, glm::value_ptr(projection));
        glUniformMatrix4fv(viewLocation, 1, 0, glm::value_ptr(worldToView));
        glUniformMatrix4fv(objectLocation, 1, 0, glm::value_ptr(objectToWorld));
        glUniform1f(timeLocation, t);
        glUniform3fv(cameraPositionLocation, 1, glm::value_ptr(camera.eye));

        // Render vaos
        glBindVertexArray(vao[0]);
        glDrawElementsInstanced(GL_TRIANGLES, cube_triangleCount * 3, GL_UNSIGNED_INT, (void*)0, 4);
        //glDrawElements(GL_TRIANGLES, cube_triangleCount * 3, GL_UNSIGNED_INT, (void*)0);
        glBindVertexArray(vao[1]);
        glDrawElements(GL_TRIANGLES, plane_triangleCount * 3, GL_UNSIGNED_INT, (void*)0);

#if 1
        // Draw UI
        glDisable(GL_DEPTH_TEST);
        glEnable(GL_BLEND);
        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
        glViewport(0, 0, width, height);

        unsigned char mbut = 0;
        int mscroll = 0;
        int mousex; int mousey;
        glfwGetMousePos(&mousex, &mousey);
        mousey = height - mousey;

        if( leftButton == GLFW_PRESS )
            mbut |= IMGUI_MBUT_LEFT;

        imguiBeginFrame(mousex, mousey, mbut, mscroll);
        int logScroll = 0;
        char lineBuffer[512];
        imguiBeginScrollArea("001", width - 210, height - 310, 200, 300, &logScroll);
        sprintf(lineBuffer, "FPS %f", fps);
        imguiLabel(lineBuffer);
        imguiSlider("Dummy", &dummySlider, 0.0, 3.0, 0.1);

        imguiEndScrollArea();
        imguiEndFrame();
        imguiRenderGLDraw(width, height);

        glDisable(GL_BLEND);
#endif
        // Check for errors
        GLenum err = glGetError();
        if(err != GL_NO_ERROR)
        {
            fprintf(stderr, "OpenGL Error : %s\n", gluErrorString(err));
        }

        // Swap buffers
        glfwSwapBuffers();

        double newTime = glfwGetTime();
        fps = 1.f/ (newTime - t);
    } // Check if the ESC key was pressed or the window was closed
    while( glfwGetKey( GLFW_KEY_ESC ) != GLFW_PRESS &&
           glfwGetWindowParam( GLFW_OPENED ) );

    // Close OpenGL window and terminate GLFW
    glfwTerminate();

    exit( EXIT_SUCCESS );
}
Example #8
0
int main( int argc, char **argv )
{
    int width = 1024, height=768;
    float widthf = (float) width, heightf = (float) height;
    double t;
    float fps = 0.f;

    // Initialise GLFW
    if( !glfwInit() )
    {
        fprintf( stderr, "Failed to initialize GLFW\n" );
        exit( EXIT_FAILURE );
    }

    // Force core profile on Mac OSX
#ifdef __APPLE__
    glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
    glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
    glfwOpenWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
    glfwOpenWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
#endif
    // Open a window and create its OpenGL context
    if( !glfwOpenWindow( width, height, 0,0,0,0, 24, 0, GLFW_WINDOW ) )
    {
        fprintf( stderr, "Failed to open GLFW window\n" );

        glfwTerminate();
        exit( EXIT_FAILURE );
    }

    glfwSetWindowTitle( "002_forward_a" );


    // Core profile is flagged as experimental in glew
#ifdef __APPLE__
    glewExperimental = GL_TRUE;
#endif
    GLenum err = glewInit();
    if (GLEW_OK != err)
    {
          /* Problem: glewInit failed, something is seriously wrong. */
          fprintf(stderr, "Error: %s\n", glewGetErrorString(err));
          exit( EXIT_FAILURE );
    }

    // Ensure we can capture the escape key being pressed below
    glfwEnable( GLFW_STICKY_KEYS );

    // Enable vertical sync (on cards that support it)
    glfwSwapInterval( 1 );
    GLenum glerr = GL_NO_ERROR;
    glerr = glGetError();

    if (!imguiRenderGLInit(DroidSans_ttf, DroidSans_ttf_len))
    {
        fprintf(stderr, "Could not init GUI renderer.\n");
        exit(EXIT_FAILURE);
    }

    // Init viewer structures
    Camera camera;
    camera_defaults(camera);
    GUIStates guiStates;
    init_gui_states(guiStates);

    // GUI
    float numLights = 10.f;

    // Load images and upload textures
    GLuint textures[3];
    glGenTextures(3, textures);
    int x;
    int y;
    int comp; 
    unsigned char * diffuse = stbi_load("textures/spnza_bricks_a_diff.tga", &x, &y, &comp, 3);
    glActiveTexture(GL_TEXTURE0);
    glBindTexture(GL_TEXTURE_2D, textures[0]);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, x, y, 0, GL_RGB, GL_UNSIGNED_BYTE, diffuse);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    fprintf(stderr, "Diffuse %dx%d:%d\n", x, y, comp);
    unsigned char * spec = stbi_load("textures/spnza_bricks_a_spec.tga", &x, &y, &comp, 1);
    glActiveTexture(GL_TEXTURE1);
    glBindTexture(GL_TEXTURE_2D, textures[1]);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, x, y, 0, GL_RED, GL_UNSIGNED_BYTE, spec);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    fprintf(stderr, "Spec %dx%d:%d\n", x, y, comp);

    // Try to load and compile shader
    int status;
    ShaderGLSL gbuffer_shader;
    const char * shaderFileGBuffer = "002/2_gbuffera.glsl";
    //int status = load_shader_from_file(gbuffer_shader, shaderFileGBuffer, ShaderGLSL::VERTEX_SHADER | ShaderGLSL::FRAGMENT_SHADER | ShaderGLSL::GEOMETRY_SHADER);
    status = load_shader_from_file(gbuffer_shader, shaderFileGBuffer, ShaderGLSL::VERTEX_SHADER | ShaderGLSL::FRAGMENT_SHADER);
    if ( status == -1 )
    {
        fprintf(stderr, "Error on loading  %s\n", shaderFileGBuffer);
        exit( EXIT_FAILURE );
    }    

    // Compute locations for gbuffer_shader
    GLuint gbuffer_projectionLocation = glGetUniformLocation(gbuffer_shader.program, "Projection");
    GLuint gbuffer_viewLocation = glGetUniformLocation(gbuffer_shader.program, "View");
    GLuint gbuffer_objectLocation = glGetUniformLocation(gbuffer_shader.program, "Object");
    GLuint gbuffer_timeLocation = glGetUniformLocation(gbuffer_shader.program, "Time");
    GLuint gbuffer_diffuseLocation = glGetUniformLocation(gbuffer_shader.program, "Diffuse");
    GLuint gbuffer_specLocation = glGetUniformLocation(gbuffer_shader.program, "Spec");

    // Load Blit shader
    ShaderGLSL blit_shader;
    const char * shaderFileBlit = "002/2_blita.glsl";
    //int status = load_shader_from_file(blit_shader, shaderFileBlit, ShaderGLSL::VERTEX_SHADER | ShaderGLSL::FRAGMENT_SHADER | ShaderGLSL::GEOMETRY_SHADER);
    status = load_shader_from_file(blit_shader, shaderFileBlit, ShaderGLSL::VERTEX_SHADER | ShaderGLSL::FRAGMENT_SHADER);
    if ( status == -1 )
    {
        fprintf(stderr, "Error on loading  %s\n", shaderFileBlit);
        exit( EXIT_FAILURE );
    }    

    // Compute locations for blit_shader
    GLuint blit_tex1Location = glGetUniformLocation(blit_shader.program, "Texture1");

    // Load light accumulation shader
    ShaderGLSL lighting_shader;
    const char * shaderFileLighting = "002/2_lighta.glsl";
    //int status = load_shader_from_file(lighting_shader, shaderFileLighting, ShaderGLSL::VERTEX_SHADER | ShaderGLSL::FRAGMENT_SHADER | ShaderGLSL::GEOMETRY_SHADER);
    status = load_shader_from_file(lighting_shader, shaderFileLighting, ShaderGLSL::VERTEX_SHADER | ShaderGLSL::FRAGMENT_SHADER);
    if ( status == -1 )
    {
        fprintf(stderr, "Error on loading  %s\n", shaderFileLighting);
        exit( EXIT_FAILURE );
    }    
    // Compute locations for lighting_shader
    GLuint lighting_materialLocation = glGetUniformLocation(lighting_shader.program, "Material");
    GLuint lighting_normalLocation = glGetUniformLocation(lighting_shader.program, "Normal");
    GLuint lighting_depthLocation = glGetUniformLocation(lighting_shader.program, "Depth");
    GLuint lighting_inverseViewProjectionLocation = glGetUniformLocation(lighting_shader.program, "InverseViewProjection");
    GLuint lighting_cameraPositionLocation = glGetUniformLocation(lighting_shader.program, "CameraPosition");
    GLuint lighting_lightPositionLocation = glGetUniformLocation(lighting_shader.program, "LightPosition");
    GLuint lighting_lightColorLocation = glGetUniformLocation(lighting_shader.program, "LightColor");
    GLuint lighting_lightIntensityLocation = glGetUniformLocation(lighting_shader.program, "LightIntensity");

    // Load geometry
    int   cube_triangleCount = 12;
    int   cube_triangleList[] = {0, 1, 2, 2, 1, 3, 4, 5, 6, 6, 5, 7, 8, 9, 10, 10, 9, 11, 12, 13, 14, 14, 13, 15, 16, 17, 18, 19, 17, 20, 21, 22, 23, 24, 25, 26, };
    float cube_uvs[] = {0.f, 0.f, 0.f, 1.f, 1.f, 0.f, 1.f, 1.f, 0.f, 0.f, 0.f, 1.f, 1.f, 0.f, 1.f, 1.f, 0.f, 0.f, 0.f, 1.f, 1.f, 0.f, 1.f, 1.f, 0.f, 0.f, 0.f, 1.f, 1.f, 0.f, 1.f, 1.f, 0.f, 0.f, 0.f, 1.f, 1.f, 0.f,  1.f, 0.f,  1.f, 1.f,  0.f, 1.f,  1.f, 1.f,  0.f, 0.f, 0.f, 0.f, 1.f, 1.f,  1.f, 0.f,  };
    float cube_vertices[] = {-0.5, -0.5, 0.5, 0.5, -0.5, 0.5, -0.5, 0.5, 0.5, 0.5, 0.5, 0.5, -0.5, 0.5, 0.5, 0.5, 0.5, 0.5, -0.5, 0.5, -0.5, 0.5, 0.5, -0.5, -0.5, 0.5, -0.5, 0.5, 0.5, -0.5, -0.5, -0.5, -0.5, 0.5, -0.5, -0.5, -0.5, -0.5, -0.5, 0.5, -0.5, -0.5, -0.5, -0.5, 0.5, 0.5, -0.5, 0.5, 0.5, -0.5, 0.5, 0.5, -0.5, -0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, -0.5, -0.5, -0.5, -0.5, -0.5, -0.5, 0.5, -0.5, 0.5, -0.5, -0.5, 0.5, -0.5, -0.5, -0.5, 0.5, -0.5, 0.5, 0.5 };
    float cube_normals[] = {0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, };
    int   plane_triangleCount = 2;
    int   plane_triangleList[] = {0, 1, 2, 2, 1, 3}; 
    float plane_uvs[] = {0.f, 0.f, 0.f, 10.f, 10.f, 0.f, 10.f, 10.f};
    float plane_vertices[] = {-50.0, -1.0, 50.0, 50.0, -1.0, 50.0, -50.0, -1.0, -50.0, 50.0, -1.0, -50.0};
    float plane_normals[] = {0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0};
    int   quad_triangleCount = 2;
    int   quad_triangleList[] = {0, 1, 2, 2, 1, 3}; 
    float quad_vertices[] =  {-1.0, -1.0, 1.0, -1.0, -1.0, 1.0, 1.0, 1.0};

    // Vertex Array Object
    GLuint vao[3];
    glGenVertexArrays(3, vao);

    // Vertex Buffer Objects
    GLuint vbo[12];
    glGenBuffers(12, vbo);

    // Cube
    glBindVertexArray(vao[0]);
    // Bind indices and upload data
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbo[0]);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(cube_triangleList), cube_triangleList, GL_STATIC_DRAW);
    // Bind vertices and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[1]);
    glEnableVertexAttribArray(0);
    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*3, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(cube_vertices), cube_vertices, GL_STATIC_DRAW);
    // Bind normals and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[2]);
    glEnableVertexAttribArray(1);
    glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*3, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(cube_normals), cube_normals, GL_STATIC_DRAW);
    // Bind uv coords and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[3]);
    glEnableVertexAttribArray(2);
    glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*2, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(cube_uvs), cube_uvs, GL_STATIC_DRAW);

    // Plane
    glBindVertexArray(vao[1]);
    // Bind indices and upload data
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbo[4]);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(plane_triangleList), plane_triangleList, GL_STATIC_DRAW);
    // Bind vertices and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[5]);
    glEnableVertexAttribArray(0);
    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*3, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(plane_vertices), plane_vertices, GL_STATIC_DRAW);
    // Bind normals and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[6]);
    glEnableVertexAttribArray(1);
    glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*3, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(plane_normals), plane_normals, GL_STATIC_DRAW);
    // Bind uv coords and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[7]);
    glEnableVertexAttribArray(2);
    glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*2, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(plane_uvs), plane_uvs, GL_STATIC_DRAW);

    // Quad
    glBindVertexArray(vao[2]);
    // Bind indices and upload data
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbo[8]);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(quad_triangleList), quad_triangleList, GL_STATIC_DRAW);
    // Bind vertices and upload data
    glBindBuffer(GL_ARRAY_BUFFER, vbo[9]);
    glEnableVertexAttribArray(0);
    glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, sizeof(GL_FLOAT)*2, (void*)0);
    glBufferData(GL_ARRAY_BUFFER, sizeof(quad_vertices), quad_vertices, GL_STATIC_DRAW);

    // Unbind everything. Potentially illegal on some implementations
    glBindVertexArray(0);
    glBindBuffer(GL_ARRAY_BUFFER, 0);

    // Init frame buffers
    GLuint gbufferFbo;
    GLuint gbufferTextures[3];
    GLuint gbufferDrawBuffers[2];
    glGenTextures(3, gbufferTextures);

    // Create color texture
    glBindTexture(GL_TEXTURE_2D, gbufferTextures[0]);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, width, height, 0, GL_RGBA, GL_FLOAT, 0);
    //glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

    // Create normal texture
    glBindTexture(GL_TEXTURE_2D, gbufferTextures[1]);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, width, height, 0, GL_RGBA, GL_FLOAT, 0);
    //glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

    // Create depth texture
    glBindTexture(GL_TEXTURE_2D, gbufferTextures[2]);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT24, width, height, 0, GL_DEPTH_COMPONENT, GL_FLOAT, 0);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

    // Create Framebuffer Object
    glGenFramebuffers(1, &gbufferFbo);
    glBindFramebuffer(GL_FRAMEBUFFER, gbufferFbo);

    // Attach textures to framebuffer
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 , GL_TEXTURE_2D, gbufferTextures[0], 0);
    gbufferDrawBuffers[0] = GL_COLOR_ATTACHMENT0;
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1 , GL_TEXTURE_2D, gbufferTextures[1], 0);
    gbufferDrawBuffers[1] = GL_COLOR_ATTACHMENT1;
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, gbufferTextures[2], 0);

    if(glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
    {
        fprintf(stderr, "Error on building framebuffer\n");
        exit( EXIT_FAILURE );
    }
    glBindFramebuffer(GL_FRAMEBUFFER, 0);

    do
    {
        t = glfwGetTime();

        // Mouse states
        int leftButton = glfwGetMouseButton( GLFW_MOUSE_BUTTON_LEFT );
        int rightButton = glfwGetMouseButton( GLFW_MOUSE_BUTTON_RIGHT );
        int middleButton = glfwGetMouseButton( GLFW_MOUSE_BUTTON_MIDDLE );

        if( leftButton == GLFW_PRESS )
            guiStates.turnLock = true;
        else
            guiStates.turnLock = false;

        if( rightButton == GLFW_PRESS )
            guiStates.zoomLock = true;
        else
            guiStates.zoomLock = false;

        if( middleButton == GLFW_PRESS )
            guiStates.panLock = true;
        else
            guiStates.panLock = false;

        // Camera movements
        int altPressed = glfwGetKey(GLFW_KEY_LSHIFT);
        if (!altPressed && (leftButton == GLFW_PRESS || rightButton == GLFW_PRESS || middleButton == GLFW_PRESS))
        {
            int x; int y;
            glfwGetMousePos(&x, &y);
            guiStates.lockPositionX = x;
            guiStates.lockPositionY = y;
        }
        if (altPressed == GLFW_PRESS)
        {
            int mousex; int mousey;
            glfwGetMousePos(&mousex, &mousey);
            int diffLockPositionX = mousex - guiStates.lockPositionX;
            int diffLockPositionY = mousey - guiStates.lockPositionY;
            if (guiStates.zoomLock)
            {
                float zoomDir = 0.0;
                if (diffLockPositionX > 0)
                    zoomDir = -1.f;
                else if (diffLockPositionX < 0 )
                    zoomDir = 1.f;
                camera_zoom(camera, zoomDir * GUIStates::MOUSE_ZOOM_SPEED);
            }
            else if (guiStates.turnLock)
            {
                camera_turn(camera, diffLockPositionY * GUIStates::MOUSE_TURN_SPEED,
                            diffLockPositionX * GUIStates::MOUSE_TURN_SPEED);

            }
            else if (guiStates.panLock)
            {
                camera_pan(camera, diffLockPositionX * GUIStates::MOUSE_PAN_SPEED,
                            diffLockPositionY * GUIStates::MOUSE_PAN_SPEED);
            }
            guiStates.lockPositionX = mousex;
            guiStates.lockPositionY = mousey;
        }
  
        // Get camera matrices
        glm::mat4 projection = glm::perspective(45.0f, widthf / heightf, 0.1f, 100.f); 
        glm::mat4 worldToView = glm::lookAt(camera.eye, camera.o, camera.up);
        glm::mat4 objectToWorld;
        glm::mat4 worldToScreen = projection * worldToView;
        glm::mat4 screenToWorld = glm::transpose(glm::inverse(worldToScreen));

        glBindFramebuffer(GL_FRAMEBUFFER, gbufferFbo);
        glDrawBuffers(2, gbufferDrawBuffers);

        // Viewport 
        glViewport( 0, 0, width, height  );

        // Default states
        glEnable(GL_DEPTH_TEST);

        // Clear the front buffer
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

        // Bind gbuffer shader
        glUseProgram(gbuffer_shader.program);
        // Upload uniforms
        glUniformMatrix4fv(gbuffer_projectionLocation, 1, 0, glm::value_ptr(projection));
        glUniformMatrix4fv(gbuffer_viewLocation, 1, 0, glm::value_ptr(worldToView));
        glUniformMatrix4fv(gbuffer_objectLocation, 1, 0, glm::value_ptr(objectToWorld));
        glUniform1f(gbuffer_timeLocation, t);
        glUniform1i(gbuffer_diffuseLocation, 0);
        glUniform1i(gbuffer_specLocation, 1);

        // Bind textures
        glActiveTexture(GL_TEXTURE0);
        glBindTexture(GL_TEXTURE_2D, textures[0]);
        glActiveTexture(GL_TEXTURE1);
        glBindTexture(GL_TEXTURE_2D, textures[1]);

        // Render vaos
        glBindVertexArray(vao[0]);
        glDrawElementsInstanced(GL_TRIANGLES, cube_triangleCount * 3, GL_UNSIGNED_INT, (void*)0, 4);
        glBindVertexArray(vao[1]);
        glDrawElements(GL_TRIANGLES, plane_triangleCount * 3, GL_UNSIGNED_INT, (void*)0);

        // Unbind framebuffer
        glBindFramebuffer(GL_FRAMEBUFFER, 0);

        // Viewport 
        glViewport( 0, 0, width, height );

        // Clear the front buffer
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

        // Bind lighting shader
        glUseProgram(lighting_shader.program);
        // Upload uniforms
        glUniform1i(lighting_materialLocation, 0);
        glUniform1i(lighting_normalLocation, 1);
        glUniform1i(lighting_depthLocation, 2);
        glUniform3fv(lighting_cameraPositionLocation, 1, glm::value_ptr(camera.eye));
        glUniformMatrix4fv(lighting_inverseViewProjectionLocation, 1, 0, glm::value_ptr(screenToWorld));

        // Bind color to unit 0
        glActiveTexture(GL_TEXTURE0);
        glBindTexture(GL_TEXTURE_2D, gbufferTextures[0]);        
        // Bind normal to unit 1
        glActiveTexture(GL_TEXTURE1);
        glBindTexture(GL_TEXTURE_2D, gbufferTextures[1]);    
        // Bind depth to unit 2
        glActiveTexture(GL_TEXTURE2);
        glBindTexture(GL_TEXTURE_2D, gbufferTextures[2]);        

        // Blit above the rest
        glDisable(GL_DEPTH_TEST);

        glEnable(GL_BLEND);
        glBlendFunc(GL_ONE, GL_ONE);

        for (int i = 0; i < (int) numLights; ++i)
        {
            float tl = t * i;

            //Update light uniforms
            float lightPosition[3] = { sinf(tl) * 10.f, -0.5f, cosf(tl) * 10.f};
            float lightColor[3] = {sinf(tl) *  1.f, 1.f - cosf(tl), -sinf(tl)};
            float lightIntensity = 10.0;

            glUniform3fv(lighting_lightPositionLocation, 1, lightPosition);
            glUniform3fv(lighting_lightColorLocation, 1, lightColor);
            glUniform1f(lighting_lightIntensityLocation, lightIntensity);

            // Draw quad
            glBindVertexArray(vao[2]);
            glDrawElements(GL_TRIANGLES, quad_triangleCount * 3, GL_UNSIGNED_INT, (void*)0);
        }

        glDisable(GL_BLEND);

        // Bind blit shader
        glUseProgram(blit_shader.program);
        // Upload uniforms
        glUniform1i(blit_tex1Location, 0);
        // use only unit 0
        glActiveTexture(GL_TEXTURE0);

        // Viewport 
        glViewport( 0, 0, width/3, height/4  );
        // Bind texture
        glBindTexture(GL_TEXTURE_2D, gbufferTextures[0]);        
        // Draw quad
        glBindVertexArray(vao[2]);
        glDrawElements(GL_TRIANGLES, quad_triangleCount * 3, GL_UNSIGNED_INT, (void*)0);
        // Viewport 
        glViewport( width/3, 0, width/3, height/4  );
        // Bind texture
        glBindTexture(GL_TEXTURE_2D, gbufferTextures[1]);        
        // Draw quad
        glBindVertexArray(vao[2]);
        glDrawElements(GL_TRIANGLES, quad_triangleCount * 3, GL_UNSIGNED_INT, (void*)0);
        // Viewport 
        glViewport( width/3 * 2, 0, width/3, height/4  );
        // Bind texture
        glBindTexture(GL_TEXTURE_2D, gbufferTextures[2]);        
        // Draw quad
        glBindVertexArray(vao[2]);
        glDrawElements(GL_TRIANGLES, quad_triangleCount * 3, GL_UNSIGNED_INT, (void*)0);
        
#if 1
        // Draw UI
        glDisable(GL_DEPTH_TEST);
        glEnable(GL_BLEND);
        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
        glViewport(0, 0, width, height);

        unsigned char mbut = 0;
        int mscroll = 0;
        int mousex; int mousey;
        glfwGetMousePos(&mousex, &mousey);
        mousey = height - mousey;

        if( leftButton == GLFW_PRESS )
            mbut |= IMGUI_MBUT_LEFT;

        imguiBeginFrame(mousex, mousey, mbut, mscroll);
        int logScroll = 0;
        char lineBuffer[512];
        imguiBeginScrollArea("001", width - 210, height - 310, 200, 300, &logScroll);
        sprintf(lineBuffer, "FPS %f", fps);
        imguiLabel(lineBuffer);
        imguiSlider("Lights", &numLights, 0.0, 100.0, 1.0);
        imguiEndScrollArea();
        imguiEndFrame();
        imguiRenderGLDraw(width, height); 

        glDisable(GL_BLEND);
#endif
        
        // Check for errors
        GLenum err = glGetError();
        if(err != GL_NO_ERROR)
        {
            fprintf(stderr, "OpenGL Error : %s\n", gluErrorString(err));
            
        }

        // Swap buffers
        glfwSwapBuffers();

    } // Check if the ESC key was pressed or the window was closed
    while( glfwGetKey( GLFW_KEY_ESC ) != GLFW_PRESS &&
           glfwGetWindowParam( GLFW_OPENED ) );

    // Clean UI
    imguiRenderGLDestroy();

    // Close OpenGL window and terminate GLFW
    glfwTerminate();

    exit( EXIT_SUCCESS );
}
Example #9
0
int main(int argc, char **argv)
{
//	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
//	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);

	/* initialize OpenGL */
	initGraphics(800,600,0);
	initGL( );
	initInput();
	renderInit();
	imguiRenderGLInit("DroidSans.ttf");
	curl_global_init(CURL_GLOBAL_ALL); 

	FW::FileWatcher* watcher = new FW::FileWatcher();
	/*FW::WatchID watchid = */watcher->addWatch( "./", new RecompileListener() );

	recompile();
	/* resize the initial window */
//	resizeWindow( xres, yres );

	/* These are to calculate our fps */
	static GLint T0     = 0;
	static GLint Frames = 0;



	/* wait for events */
	bool done = false;
	SDL_Event event;
	while ( !done )
	{
		/* handle the events in the queue */

		while ( SDL_PollEvent( &event ) )
		{
			switch( event.type )
			{
			//case SDL_ACTIVEEVENT:
				/* Something's happend with our focus
				* If we lost focus or we are iconified, we
				* shouldn't draw the screen
				*/
				//if ( event.active.gain == 0 )
				//	isActive = FALSE;
				//   else
				//		isActive = TRUE;
			//	break;			    
#if 0
			case SDL_VIDEORESIZE:
				/* handle resize event */
				surface = SDL_SetVideoMode( event.resize.w,
					event.resize.h,
					16, videoFlags );
				if ( !surface )
				{
					fprintf( stderr, "Could not get a surface after resize: %s\n", SDL_GetError( ) );
					Quit( 1 );
				}
				resizeWindow( event.resize.w, event.resize.h );
				break;
#endif
			case SDL_KEYDOWN:
				/* handle key presses */
				handleKeyPress( &event.key.keysym );
				break;
			case SDL_KEYUP:
                    if(event.key.keysym.sym<=255){
                        keystat[event.key.keysym.sym] = 0;
                    }
                    break;
			case SDL_MOUSEMOTION:
				mousexr = event.motion.xrel;
				mouseyr = event.motion.yrel;
				mousex = event.motion.x;
				mousey = event.motion.y;
				break;
			case SDL_MOUSEBUTTONDOWN:
				mousestat[event.button.button] = 1;
				break;
			case SDL_MOUSEBUTTONUP:
				mousestat[event.button.button] = 0;
				break;
			case SDL_QUIT:
				/* handle quit requests */
				done = TRUE;
				break;
			default:
				break;
			}
		}

		/* draw the scene */
		//if ( isActive )
		{
			watcher->update();
            
            //glClearColor(1, 0, 0, 1);
            //glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
            
			if(update)
			{
				update();
			}
            /*
            glMatrixMode(GL_PROJECTION);
            glLoadIdentity();
            float projection[16] = { 2.f/800, 0.f, 0.f,  0.f,
                0.f, 2.f/600,  0.f,  0.f,
                0.f,  0.f, -2.f, 0.f,
                -1.f, -1.f,  -1.f,  1.f };
            glLoadMatrixf(projection);
            glMatrixMode(GL_MODELVIEW);
            glLoadIdentity();*/
            glEnable(GL_BLEND);
            glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
            glDisable(GL_DEPTH_TEST);
			imguiRenderGLDraw(800, 600);
            
/*
            glBegin(GL_TRIANGLES);
            glColor3f(1, 1, 0);
            glVertex2d(1, 1);
            glVertex2d(1, 0);
            glVertex2d(0, 1);
            glEnd();
*/
			/* Draw it to the screen */
			swapBuffers();
			
			/* Gather our frames per second */
			Frames++;
			{
				GLint t = SDL_GetTicks();
				if (t - T0 < 16) {
//					SDL_Delay(16 - (t-T0));

//					GLfloat seconds = (t - T0) / 1000.f;
//					GLfloat fps = Frames / seconds;
//					Frames = 0;
				}

				T0 = t;
			}

		}
	}

	imguiRenderGLDestroy();
	renderFini();

	/* clean ourselves up and exit */
	Quit( 0 );

	/* Should never get here */
	return( 0 );
}
Example #10
0
bool Visualization::initialize()
{
    m_initialized = true;
    m_mousePosition[0] = m_mousePosition[1] = 1;
    m_crowdAvailableDt = 0.f;
    m_stopRequested = false;
	m_rotating = false;
	    
    if (SDL_Init(SDL_INIT_EVERYTHING) != 0)
	{
		printf("Could not initialize SDL.\n");
		m_initialized = false;
	}
    else
    {
        // Center window
        char env[] = "SDL_VIDEO_CENTERED=1";
#ifdef _MSC_VER
        _putenv(env);
#else
        putenv(env);
#endif
        
        // Init OpenGL
        SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
        SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
        SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
        SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
        SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
        SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
        //#ifndef WIN32
        SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
        SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4);
        //#endif
        
        const SDL_VideoInfo* vi = SDL_GetVideoInfo();
        
        SDL_Surface* screen = 0;
        
        if (m_fullscreen)
        {
            m_winWidth = vi->current_w;
            m_winHeight = vi->current_h;
            screen = SDL_SetVideoMode(m_winWidth, m_winHeight, 0, SDL_OPENGL|SDL_FULLSCREEN);
        }
        else
        {	
            m_winWidth = vi->current_w - 20;
            m_winHeight = vi->current_h - 80;
            screen = SDL_SetVideoMode(m_winWidth, m_winHeight, 0, SDL_OPENGL);
        }
        
        if (!screen)
        {
            printf("Could not initialise SDL opengl.\n");
            m_initialized = false;
        }
        else
        {
            glEnable(GL_MULTISAMPLE);
            
            SDL_WM_SetCaption("Detour Crowd Demo", 0);
            
            if (!imguiRenderGLInit("DroidSans.ttf"))
            {
                printf("Could not init GUI renderer.\n");
                m_initialized = false;
            }
            else if (!initializeCamera())
            {
                printf("Unable to initialize the camera.\n");
                m_initialized = false;
            }
            else if (m_debugInfo == 0 || !m_debugInfo->initialize())
            {
                printf("Unable to initialize the crowd debug info.\n");
                m_initialized = false;
            }
            else
            {
                m_initialized = true;
                
                glEnable(GL_CULL_FACE);
                
                float fogCol[4] = { 0.32f, 0.31f, 0.30f, 1.0f };
                glEnable(GL_FOG);
                glFogi(GL_FOG_MODE, GL_LINEAR);
                glFogf(GL_FOG_START, m_zFar*0.1f);
                glFogf(GL_FOG_END, m_zFar*1.25f);
                glFogfv(GL_FOG_COLOR, fogCol);
                
                glDepthFunc(GL_LEQUAL);
                
                m_lastTickCount = SDL_GetTicks();
                
                
                // Extract OpenGL view properties
                glGetDoublev(GL_PROJECTION_MATRIX, m_projection);
                glGetDoublev(GL_MODELVIEW_MATRIX, m_modelView);
                glGetIntegerv(GL_VIEWPORT, m_viewport);
            }
        }
    }
    
    if (!m_initialized)
    {
        SDL_Quit();
    }

    return m_initialized;
}