gistfile1.txt

import org.lwjgl.*;
import org.lwjgl.glfw.*;
import org.lwjgl.opengl.*;
 
import static org.lwjgl.glfw.GLFW.*;
import static org.lwjgl.opengl.GL11.*;
import static org.lwjgl.system.MemoryUtil.*;
 
public class Benchmark {
 
    // We need to strongly reference callback instances.
    private GLFWErrorCallback errorCallback;
    private GLFWKeyCallback   keyCallback;
 
    // The window handle
    private long window;
 
    public void run() {
        System.out.println("Hello LWJGL " + Version.getVersion() + "!");
 
            init();
            
            GL.createCapabilities();
            System.out.println("GL Enable and Disable");
            {
	            OpenGlStateMachine state = new OpenGlStateMachine();
	            long startTime = System.currentTimeMillis();
	            for(int x =0; x < 500000; x++)
	            {
	            	state.glEnable(new OpenGlStateMachine.GLState[]{OpenGlStateMachine.GLState.T_GL_DEPTH_TEST});
	            }
	            long endTime = System.currentTimeMillis();
	            System.out.println("Total execution time: " + (endTime-startTime) + "ms");
            }
            
            {
	            long startTime = System.currentTimeMillis();
	            for(int x =0; x < 500000; x++)
	            GL11.glEnable(GL_DEPTH_TEST);
	            long endTime = System.currentTimeMillis();
	            System.out.println("Total execution time: " + (endTime-startTime) + "ms");
            }
            
            
            System.out.println("GL Cull");
            {
            	long startTime = System.currentTimeMillis();
            	OpenGlStateMachine state = new OpenGlStateMachine();
            	for(int x =0; x < 500000; x++)
            		state.glCull(OpenGlStateMachine.GLCull.T_GL_BACK);
            	long endTime = System.currentTimeMillis();
            	System.out.println("Total execution time: " + (endTime-startTime) + "ms");
            }
            
            {
            	long startTime = System.currentTimeMillis();
            	OpenGlStateMachine state = new OpenGlStateMachine();
            	for(int x =0; x < 500000; x++)
            		GL11.glCullFace(GL11.GL_CULL_FACE);
            	long endTime = System.currentTimeMillis();
            	System.out.println("Total execution time: " + (endTime-startTime) + "ms");
            }
            
            System.out.println("GL Blend");
            
            {
            	long startTime = System.currentTimeMillis();
            	OpenGlStateMachine state = new OpenGlStateMachine();
            	for(int x =0; x < 500000; x++)
            		state.glBlend(OpenGlStateMachine.GLBlendState.T_GL_SRC_ALPHA,OpenGlStateMachine.GLBlendState.T_GL_ONE_MINUS_DST_ALPHA);
            	long endTime = System.currentTimeMillis();
            	System.out.println("Total execution time: " + (endTime-startTime) + "ms");
            }
            
            {
            	long startTime = System.currentTimeMillis();
            	OpenGlStateMachine state = new OpenGlStateMachine();
            	for(int x =0; x < 500000; x++)
            		GL11.glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
            	long endTime = System.currentTimeMillis();
            	System.out.println("Total execution time: " + (endTime-startTime) + "ms");
            }
            
           
            // Destroy window and window callbacks
            glfwDestroyWindow(window);

    }
 
    private void init() {
        // Setup an error callback. The default implementation
        // will print the error message in System.err.
        glfwSetErrorCallback(errorCallback = GLFWErrorCallback.createPrint(System.err));
 
        // Initialize GLFW. Most GLFW functions will not work before doing this.
        if ( glfwInit() != GLFW_TRUE )
            throw new IllegalStateException("Unable to initialize GLFW");
 
        // Configure our window
        glfwDefaultWindowHints(); // optional, the current window hints are already the default
        glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE); // the window will stay hidden after creation
        glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE); // the window will be resizable
 
        int WIDTH = 300;
        int HEIGHT = 300;
 
        // Create the window
        window = glfwCreateWindow(WIDTH, HEIGHT, "Hello World!", NULL, NULL);
        if ( window == NULL )
            throw new RuntimeException("Failed to create the GLFW window");
 
        // Setup a key callback. It will be called every time a key is pressed, repeated or released.
        glfwSetKeyCallback(window, keyCallback = new GLFWKeyCallback() {
            @Override
            public void invoke(long window, int key, int scancode, int action, int mods) {
                if ( key == GLFW_KEY_ESCAPE && action == GLFW_RELEASE )
                    glfwSetWindowShouldClose(window, GLFW_TRUE); // We will detect this in our rendering loop
            }
        });
 
        // Get the resolution of the primary monitor
        GLFWVidMode vidmode = glfwGetVideoMode(glfwGetPrimaryMonitor());
        // Center our window
        glfwSetWindowPos(
            window,
            (vidmode.width() - WIDTH) / 2,
            (vidmode.height() - HEIGHT) / 2
        );
 
        // Make the OpenGL context current
        glfwMakeContextCurrent(window);
        // Enable v-sync
        glfwSwapInterval(1);
 
        // Make the window visible
        glfwShowWindow(window);
    }
 
    private void loop() {
        // This line is critical for LWJGL's interoperation with GLFW's
        // OpenGL context, or any context that is managed externally.
        // LWJGL detects the context that is current in the current thread,
        // creates the GLCapabilities instance and makes the OpenGL
        // bindings available for use.
        GL.createCapabilities();
 
        // Set the clear color
        glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
 
        // Run the rendering loop until the user has attempted to close
        // the window or has pressed the ESCAPE key.
        while ( glfwWindowShouldClose(window) == GLFW_FALSE ) {
            glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the framebuffer
 
            glfwSwapBuffers(window); // swap the color buffers
 
            // Poll for window events. The key callback above will only be
            // invoked during this call.
            glfwPollEvents();
        }
    }
 
    public static void main(String[] args) {
        new Benchmark().run();
    }
 
}