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);
}
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"));
}
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;
}
}
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;
}
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 );
}
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 );
}
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 );
}
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 );
}
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;
}