Initial Commit

CMakeLists.txt

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+# CMake entry point
+cmake_minimum_required (VERSION 3.0)
+project (OpenGL_Analog_Clock)
+
+find_package(OpenGL REQUIRED)
+
+set(ALL_LIBS
+	${OPENGL_LIBRARY}
+	glfw
+	GLEW
+)
+
+add_definitions(
+	-DTW_STATIC
+	-DTW_NO_LIB_PRAGMA
+	-DTW_NO_DIRECT3D
+	-DGLEW_STATIC
+	-D_CRT_SECURE_NO_WARNINGS
+)
+
+add_executable(clock
+    main.c
+)
+
+target_link_libraries(clock
+    ${ALL_LIBS}
+)

main.c

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+// Include standard headers
+#include <stdio.h>
+#include <stdlib.h>
+
+// Include GLEW
+#include <GL/glew.h>
+
+// Include GLFW
+#include <GLFW/glfw3.h>
+GLFWwindow* window;
+
+int main( void )
+{
+	// Initialise GLFW
+	if( !glfwInit() )
+	{
+		fprintf( stderr, "Failed to initialize GLFW\n" );
+		getchar();
+		return -1;
+	}
+
+	glfwWindowHint(GLFW_SAMPLES, 4);
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+	glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // To make MacOS happy; should not be needed
+	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+
+	// Open a window and create its OpenGL context
+	window = glfwCreateWindow( 1024, 768, "Tutorial 01", NULL, NULL);
+	if( window == NULL ){
+		fprintf( stderr, "Failed to open GLFW window. If you have an Intel GPU, they are not 3.3 compatible. Try the 2.1 version of the tutorials.\n" );
+		getchar();
+		glfwTerminate();
+		return -1;
+	}
+	glfwMakeContextCurrent(window);
+
+	// Initialize GLEW
+	if (glewInit() != GLEW_OK) {
+		fprintf(stderr, "Failed to initialize GLEW\n");
+		getchar();
+		glfwTerminate();
+		return -1;
+	}
+
+	// Ensure we can capture the escape key being pressed below
+	glfwSetInputMode(window, GLFW_STICKY_KEYS, GL_TRUE);
+
+	// Dark grey background
+	glClearColor(0.15f, 0.15f, 0.15f, 0.0f);
+
+	do{
+		// Clear the screen. It's not mentioned before Tutorial 02, but it can cause flickering, so it's there nonetheless.
+		glClear( GL_COLOR_BUFFER_BIT );
+
+		// Draw nothing, see you in tutorial 2 !
+
+		
+		// Swap buffers
+		glfwSwapBuffers(window);
+		glfwPollEvents();
+
+	} // Check if the ESC key was pressed or the window was closed
+	while( glfwGetKey(window, GLFW_KEY_ESCAPE ) != GLFW_PRESS &&
+		   glfwWindowShouldClose(window) == 0 );
+
+	// Close OpenGL window and terminate GLFW
+	glfwTerminate();
+
+	return 0;
+}
+