// Renders the overlays either to a texture or to the screen
void ApplicationOverlay::renderOverlay(bool renderToTexture) {
PerformanceWarning warn(Menu::getInstance()->isOptionChecked(MenuOption::PipelineWarnings), "ApplicationOverlay::displayOverlay()");
Application* application = Application::getInstance();
Overlays& overlays = application->getOverlays();
GLCanvas* glWidget = application->getGLWidget();
MyAvatar* myAvatar = application->getAvatar();
_textureFov = glm::radians(Menu::getInstance()->getOculusUIAngularSize());
_textureAspectRatio = (float)application->getGLWidget()->getDeviceWidth() / (float)application->getGLWidget()->getDeviceHeight();
//Handle fading and deactivation/activation of UI
if (Menu::getInstance()->isOptionChecked(MenuOption::UserInterface)) {
_alpha += FADE_SPEED;
if (_alpha > 1.0f) {
_alpha = 1.0f;
}
} else {
_alpha -= FADE_SPEED;
if (_alpha <= 0.0f) {
_alpha = 0.0f;
}
}
// Render 2D overlay
glMatrixMode(GL_PROJECTION);
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
if (renderToTexture) {
_overlays.buildFramebufferObject();
_overlays.bind();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
glPushMatrix(); {
glLoadIdentity();
gluOrtho2D(0, glWidget->width(), glWidget->height(), 0);
renderAudioMeter();
if (Menu::getInstance()->isOptionChecked(MenuOption::HeadMouse)) {
myAvatar->renderHeadMouse(glWidget->width(), glWidget->height());
}
renderStatsAndLogs();
// give external parties a change to hook in
emit application->renderingOverlay();
overlays.render2D();
renderPointers();
renderDomainConnectionStatusBorder();
} glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_CONSTANT_ALPHA, GL_ONE);
if (renderToTexture) {
_overlays.release();
}
}