day-night loop, dynamic skybox, clock on debug panel

src/window/Window.cpp

@@ -127,6 +127,10 @@ int Window::initialize(DisplaySettings& settings){
 		glfwSetWindowMonitor(window, monitor, 0, 0, mode->width, mode->height, GLFW_DONT_CARE);
 	}
 	glfwSwapInterval(settings.swapInterval);
+	const GLubyte* vendor = glGetString(GL_VENDOR);
+	const GLubyte* renderer = glGetString(GL_RENDERER);
+	std::cout << "GL Vendor: " << (char*)vendor << std::endl;
+	std::cout << "GL Renderer: " << (char*)renderer << std::endl;
 	return 0;
 }
 
@@ -134,6 +138,10 @@ void Window::clear() {
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 }
 
+void Window::clearDepth() {
+	glClear(GL_DEPTH_BUFFER_BIT);
+}
+
 void Window::setBgColor(glm::vec3 color) {
 	glClearColor(color.r, color.g, color.b, 1.0f);
 }
@@ -252,6 +260,7 @@ DisplaySettings* Window::getSettings() {
 
 ImageData* Window::takeScreenshot() {
 	ubyte* data = new ubyte[width * height * 3];
+	glPixelStorei(GL_PACK_ALIGNMENT, 1);
 	glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, data);
 	return new ImageData(ImageFormat::rgb888, width, height, data);
 }