Example usage for org.lwjgl.opengl GL11 glClear

Introduction

In this page you can find the example usage for org.lwjgl.opengl GL11 glClear.

Prototype

public static void glClear(@NativeType("GLbitfield") int mask) 

Source Link

Document

Sets portions of every pixel in a particular buffer to the same value.

Usage

From source file:RobotDemo.java

private void loop() {
    GL11.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
    GL11.glColor4f(1.0f, 0.0f, 0.0f, 1.0f);

    while (GLFW.glfwWindowShouldClose(window) != GL11.GL_TRUE) {
        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
        GL11.glPushMatrix();/*from   www .j  a  v a 2  s . c  o  m*/
        for (Robot r : robots)
            r.draw();
        GL11.glPopMatrix();
        GLFW.glfwSwapBuffers(window);
        GLFW.glfwPollEvents();
    }
}

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From source file:$.DrawSystem.java

License:Open Source License

@Override
    protected void processEntities(ImmutableBag<Entity> entities) {
        GL11.glClearColor(0.1f, 0, 0, 1f);
        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);
        List<Entity> entititesSortedByZ = new ArrayList<>(entities.size());
        for (int i = 0, n = entities.size(); i < n; ++i) {
            final Entity e = entities.get(i);
            if (e.isEnabled()) {
                entititesSortedByZ.add(e);
            }//from  w ww .j a  va 2s.c o m
        }
        Collections.sort(entititesSortedByZ, zComparator);

        GL11.glPushAttrib(GL11.GL_ENABLE_BIT | GL11.GL_TRANSFORM_BIT | GL11.GL_HINT_BIT | GL11.GL_COLOR_BUFFER_BIT
                | GL11.GL_SCISSOR_BIT | GL11.GL_LINE_BIT | GL11.GL_TEXTURE_BIT);
        GL11.glMatrixMode(GL11.GL_PROJECTION);
        GL11.glPushMatrix();
        GL11.glLoadIdentity();

        updateViewPort();
        GL11.glViewport(viewPort.x, viewPort.y, viewPort.width, viewPort.height);
        GLU.gluOrtho2D(-toolkit.getVirtualResolutionWidth() / 2.0f, toolkit.getVirtualResolutionWidth() / 2.0f,
                toolkit.getVirtualResolutionHeight() / 2.0f, -toolkit.getVirtualResolutionHeight() / 2.0f);
        GL11.glMatrixMode(GL11.GL_MODELVIEW);
        GL11.glPushMatrix();
        GL11.glLoadIdentity();
        GL11.glEnable(GL11.GL_TEXTURE_2D);
        GL11.glEnable(GL11.GL_BLEND);
        GL11.glEnable(GL11.GL_LINE_SMOOTH);
        GL11.glDisable(GL11.GL_DEPTH_TEST);
        GL11.glDisable(GL11.GL_LIGHTING);
        GL11.glDisable(GL11.GL_SCISSOR_TEST);
        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
        GL11.glHint(GL11.GL_LINE_SMOOTH_HINT, GL11.GL_NICEST);

        Game game = (Game) world;
        Entity hero = game.getHero();
        if (null != hero) {
            Sprite heroSprite = spriteMapper.get(hero);
            Vector heroPos = spriteProjector.project(heroSprite.getPosition());
            GL11.glTranslatef(-heroPos.x, -heroPos.y, 0.0f);
        }

        for (Entity e : entititesSortedByZ) {
            MainMenu mainMenu = mainMenuMapper.getSafe(e);
            if (null != mainMenu) {
                mainMenu.draw();
            }
            DialogueComponent dialog = dialogMapper.getSafe(e);
            if (null != dialog) {
                dialog.draw();
            }
            Level level = levelMapper.getSafe(e);
            if (null != level) {
                drawLevel(level);
            }
            Sprite sprite = spriteMapper.getSafe(e);
            if (null != sprite) {
                drawSprite(sprite);
            }
        }
        GL11.glPopMatrix();
        GL11.glMatrixMode(GL11.GL_PROJECTION);
        GL11.glPopMatrix();
        GL11.glPopAttrib();

    }

---

From source file:a1.gui.GUI_Map.java

License:Open Source License

public void CreateLightMap() {

    //Coord screen_size = new Coord(Config.getScreenWidth(), Config.getScreenHeight());
    //Coord screen_coord = new Coord(GUI.map.mc).sub(screen_size.div(2));
    List<Coord> lst = new ArrayList<Coord>();

    for (RenderPart p : render_parts) {
        Drawable d = p.owner.getattr(Drawable.class);
        if (d != null) {
            if (d.name.contains("fir")) {
                lst.add(p.dc);/*www.j  a  va  2 s. c o m*/
            }
            if (d.name.contains("player")) {
                lst.add(p.dc);
            }
        }
    }

    //      for (Obj o : ObjCache.objs.values()) {
    //         Drawable d = o.getattr(Drawable.class);
    //         if (d != null) {
    //            if (d.name.contains("tree")) {
    //               if (o.getpos().in_rect(screen_coord, screen_size))
    //                  lst.add(o.getpos());
    //            }
    //         }
    //      }

    if (first) {
        first = false;
        boolean FBOEnabled = GLContext.getCapabilities().GL_EXT_framebuffer_object;
        if (!FBOEnabled)
            Log.info("No FBO");
        myFBOId = EXTFramebufferObject.glGenFramebuffersEXT();
        //LightMap = GL11.glGenTextures();

        EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, myFBOId);
        EXTFramebufferObject.glFramebufferTexture2DEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT,
                EXTFramebufferObject.GL_COLOR_ATTACHMENT0_EXT, GL11.GL_TEXTURE_2D, LightMap, 0);
        EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, 0);
    }

    //ByteBuffer bb = ByteBuffer.allocate(1024 * 1024 * 4);
    //GL11.glReadPixels(0, 0, 1024, 768, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, bb);

    // ? FBO  ?  ?
    EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, myFBOId);
    //      GL11.glPushAttrib(GL11.GL_VIEWPORT_BIT);
    //  ?
    //      GL11.glViewport( 0, 0, 1024, 1024 );
    //      
    // ? 
    //   ?
    GL11.glEnable(GL11.GL_TEXTURE_2D);
    GL11.glClearColor(0.3f, 0.3f, 0.4f, 1.0f);
    GL11.glClear(GL_COLOR_BUFFER_BIT);

    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE);

    //  ? ? ?
    for (Coord c : lst)
        DrawLight(c, 100, 100);

    /*GL11.glTranslatef(0, 0, -6f);
    GL11.glBegin(GL11.GL_QUADS);
    GL11.glVertex3f(0, 0, 0);
    GL11.glVertex3f(200, 0, 0);
    GL11.glVertex3f(200, 200, 0);
    GL11.glVertex3f(0, 200, 0);
    GL11.glEnd();*/
    //      GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
    EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, 0);
    //      GL11.glPopAttrib();

    //      GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);
    //      
    //  
    //GL11.glBindTexture(GL11.GL_TEXTURE_2D, LightMap);
    //Render2D.CheckError();

    //    ?  - ? 
    //GL11.glCopyTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA8, 0, 0, 1024, 1024, 0);
    //GL11.glCopyTexSubImage2D(GL11.GL_TEXTURE_2D, 0, 0, 0, 0, 0, 1024, 1024);
    //Render2D.CheckError();

    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

}

---

From source file:adrianton.gloptat.plotter.Displayer.java

License:Open Source License

public void loop() {
    GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
    render();//from   w ww. j  a  v  a 2s . co  m
    Display.update();
    GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
    render();
    Display.update();

    while (true) {
        if (needsResurface) {
            needsResurface = false;
            Surface.release();
            Surface.assemble(this);
        }
        // GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);

        if (mouse() || needsRepaint) // needs refresh
        {
            needsRepaint = false;
            GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
            render();
            Display.update();
            Display.sync(40);
            GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
            render();
        }
        // adv();
        // render();

        Display.update();
        Display.sync(40);

        if (Display.isCloseRequested())
            exitProgram();
    }
}

---

From source file:akarnokd.opengl.experiment.FontExample.java

License:Apache License

/**
 * Start the test // w  ww  . j a v a2  s .c o  m
 */
public void start() {
    initGL(800, 600);
    init();

    while (true) {
        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);
        render();

        Display.update();
        Display.sync(100);

        if (Display.isCloseRequested()) {
            Display.destroy();
            System.exit(0);
        }
    }
}

---

From source file:analog.clock.AnalogClock.java

private void init() {
    GLFW.glfwInit();//from ww w  . ja v a  2s  .c  om
    window = GLFW.glfwCreateWindow(600, 600, "Analog Clock", 0, 0);
    GLFW.glfwMakeContextCurrent(window);
    GL.createCapabilities();
    GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);
    GLFW.glfwSwapBuffers(window);
}

---

From source file:analog.clock.AnalogClock.java

private void loop() {
    try {/*from w ww.  j av  a 2s  .com*/
        for (int i = 0; i < 1000; i++) {
            GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);
            drawCircle(0.25, 8); // draw the sun

            earthOrbitAngle += 1;
            moonOrbitAngle += 5;
            earthAxisAngle += 10;

            GL11.glPushMatrix();
            GL11.glRotatef(earthOrbitAngle, 0, 0, 1);
            GL11.glTranslatef(0.75f, 0.0f, 0.0f);
            GL11.glPushMatrix();
            GL11.glRotatef(earthAxisAngle, 0, 0, 1);
            GL11.glScalef(0.5f, 0.5f, 0.5f);
            drawCircle(0.25, 3); // draw the earth
            GL11.glPopMatrix();

            GL11.glPushMatrix();
            GL11.glRotatef(moonOrbitAngle, 0, 0, 1);
            GL11.glTranslatef(0.25f, 0.0f, 0.0f);
            GL11.glScalef(0.25f, 0.25f, 0.25f);
            drawCircle(0.25, 5); // draw the moon
            GL11.glPopMatrix();
            GL11.glPopMatrix();

            Thread.sleep(10);
            GLFW.glfwSwapBuffers(window);
        }
    } catch (InterruptedException ex) {
        Logger.getLogger(AnalogClock.class.getName()).log(Level.SEVERE, null, ex);
    }
}

---

From source file:aphelion.client.Client.java

License:Open Source License

public static void initGL() {
    int displayWidth = Display.getWidth();
    int displayHeight = Display.getHeight();

    glDisableAll();/*from w  ww .ja  v  a  2 s  .c om*/

    GL11.glViewport(0, 0, displayWidth, displayHeight);

    GL11.glMatrixMode(GL11.GL_PROJECTION); // Apply subsequent matrix operations to the projection matrix stack.
    GL11.glLoadIdentity();
    GL11.glOrtho(0, displayWidth, displayHeight, 0, -1, 1);

    GL11.glMatrixMode(GL11.GL_TEXTURE);
    GL11.glLoadIdentity();

    GL11.glMatrixMode(GL11.GL_MODELVIEW);
    GL11.glLoadIdentity();

    GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_STENCIL_BUFFER_BIT);
    AsyncTexture.unbind();

    // Enable alpha channels for images
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
    GL11.glEnable(GL11.GL_BLEND);

    Graph.g.setDimensions(displayWidth, displayHeight);
    Graphics.setCurrent(Graph.g);
    Graph.g.setDrawMode(Graphics.MODE_NORMAL);
}

---

From source file:ar.com.quark.backend.lwjgl.opengl.DesktopGLES20.java

License:Apache License

/**
 * {@inheritDoc}
 */
@Override
public void glClear(int value) {
    GL11.glClear(value);
}

---

From source file:arg.RenderRecipe.java

License:Open Source License

public void draw() {

    File dir = new File(Minecraft.getMinecraft().mcDataDir, "recipes");
    if (!dir.exists() && !dir.mkdirs()) {
        throw new RuntimeException("The recipes directory could not be created: " + dir);
    }// w w  w  .jav a  2s. co  m

    name = name.replace(" ", "");
    File file = new File(Minecraft.getMinecraft().mcDataDir, "recipes/" + name + ".png");

    if (file.exists())
        return;

    GL11.glPushMatrix();
    GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS);
    GL11.glPushClientAttrib(GL11.GL_ALL_CLIENT_ATTRIB_BITS);
    GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);

    GL11.glMatrixMode(GL11.GL_PROJECTION);
    GL11.glLoadIdentity();
    GL11.glViewport(0, 0, width, height);
    GL11.glOrtho(0.0D, xSize, ySize, 0.0D, 1000.0D, 3000.0D);
    GL11.glMatrixMode(GL11.GL_MODELVIEW);
    GL11.glLoadIdentity();
    GL11.glTranslatef(0.0F, 0.0F, -2000.0F);
    GL11.glLineWidth(1.0F);

    GL11.glEnable(GL11.GL_COLOR_MATERIAL);

    try {
        drawScreen(0, 0, 0);
    } catch (Exception e) {
        e.printStackTrace();
    }

    int[] pixels = new int[width * height];
    int bindex;

    ByteBuffer fb = ByteBuffer.allocateDirect(width * height * 3);

    GL11.glReadPixels(0, 0, width, height, GL11.GL_RGB, GL11.GL_UNSIGNED_BYTE, fb);
    GL11.glPopMatrix();
    GL11.glPopAttrib();
    GL11.glPopClientAttrib();
    GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
    try {
        Display.swapBuffers();
    } catch (LWJGLException e1) {
        e1.printStackTrace();
    }

    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

    for (int x = 0; x < width; x++) {
        for (int y = 0; y < height; y++) {
            int i = (x + (width * y)) * 3;
            int r = fb.get(i) & 0xFF;
            int g = fb.get(i + 1) & 0xFF;
            int b = fb.get(i + 2) & 0xFF;
            image.setRGB(x, height - (y + 1), (0xFF << 24) | (r << 16) | (g << 8) | b);
        }
    }

    try {
        ImageIO.write(image, "png", file);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

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