Example usage for org.lwjgl.opengl GL11 glReadBuffer

List of usage examples for org.lwjgl.opengl GL11 glReadBuffer

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Introduction

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

Prototype

public static void glReadBuffer(@NativeType("GLenum") int src)

Source Link

Document

Defines the color buffer from which values are obtained.

Usage

From source file:com.opengrave.og.light.Depth2DFramebuffer.java

License:Open Source License

public Depth2DFramebuffer(int size) {
    framebufferSize = size;//from  w  ww .ja  va 2  s .  c o  m
    framebuffer = GL30.glGenFramebuffers();
    GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, framebuffer);
    shadowMap = new Texture2DShadowMap(framebufferSize);

    shadowMap.bindToFrameBuffer();

    // GL11.glDrawBuffer(GL30.GL_COLOR_ATTACHMENT0);
    GL11.glDrawBuffer(GL11.GL_NONE);
    Util.checkErr();
    GL11.glReadBuffer(GL11.GL_NONE);
    int i = GL30.glCheckFramebufferStatus(GL30.GL_FRAMEBUFFER);
    if (i != GL30.GL_FRAMEBUFFER_COMPLETE) {
        throw new RuntimeException("Framebuffer creation failed with code: " + i);
    }
    GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 0);

    // TESTING STUFF
    count = 2;
    FloatBuffer pos = BufferUtils.createFloatBuffer(3 * 3 * count);
    FloatBuffer tex = BufferUtils.createFloatBuffer(2 * 3 * count);
    pos.put(0.75f).put(0.75f).put(0f);
    pos.put(0.75f).put(0.25f).put(0f);
    pos.put(0.25f).put(0.75f).put(0f);
    pos.put(0.25f).put(0.25f).put(0f);

    pos.put(0.75f).put(0.25f).put(0f);
    pos.put(0.25f).put(0.75f).put(0f);
    pos.flip();
    tex.put(1f).put(1f);
    tex.put(1f).put(0f);
    tex.put(0f).put(1f);
    tex.put(0f).put(0f);
    tex.put(1f).put(0f);

    tex.put(0f).put(1f);
    tex.flip();
    vao_ID = GL30.glGenVertexArrays();
    GL30.glBindVertexArray(vao_ID);
    int vbo_pos_ID = GL15.glGenBuffers();
    int vbo_tex_ID = GL15.glGenBuffers();
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, vbo_pos_ID);
    GL15.glBufferData(GL15.GL_ARRAY_BUFFER, pos, GL15.GL_STATIC_DRAW);
    GL20.glVertexAttribPointer(0, 3, GL11.GL_FLOAT, false, 0, 0);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, vbo_tex_ID);
    GL15.glBufferData(GL15.GL_ARRAY_BUFFER, tex, GL15.GL_STATIC_DRAW);
    GL20.glVertexAttribPointer(1, 2, GL11.GL_FLOAT, false, 0, 0);
}

From source file:com.opengrave.og.light.DepthCubeFramebuffer.java

License:Open Source License

public DepthCubeFramebuffer(int size) {
    framebufferSize = size;//from  w  w  w.  j av a2s . co  m
    framebuffer = GL30.glGenFramebuffers();
    // System.out.println("Creating Pointlight Framebuffer : " +
    // framebuffer);
    GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, framebuffer);
    shadowMap = new TextureCubeShadowMap(framebufferSize);

    // shadowMap.bindToFrameBuffer();
    shadowMap.bindToFrameBuffer(0);
    // GL11.glDrawBuffer(GL30.GL_COLOR_ATTACHMENT0);
    GL11.glDrawBuffer(GL11.GL_NONE);
    Util.checkErr();
    GL11.glReadBuffer(GL11.GL_NONE);
    int i = GL30.glCheckFramebufferStatus(GL30.GL_FRAMEBUFFER);
    if (i != GL30.GL_FRAMEBUFFER_COMPLETE) {
        throw new RuntimeException("Framebuffer creation failed with code: " + i);
    }
    GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 0);
    Util.checkErr();
}

From source file:com.samrj.devil.gl.FBO.java

License:Open Source License

/**
 * Specifies which color buffer to read from for this frame buffer.
 * /*from w  w w. j  a  v  a2s  .c  o m*/
 * @param buffer The buffer to read from.
 */
public void readBuffer(int buffer) {
    ensureBound();
    GL11.glReadBuffer(buffer);
}

From source file:eu.over9000.veya.rendering.Shadow.java

License:Open Source License

public void init() {
    depthMap = GL11.glGenTextures();//from   w w w. ja v a2  s.c om
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, depthMap);
    GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_DEPTH_COMPONENT, SHADOW_WIDTH, SHADOW_HEIGHT, 0,
            GL11.GL_DEPTH_COMPONENT, GL11.GL_FLOAT, (ByteBuffer) null);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL13.GL_CLAMP_TO_BORDER);
    GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, GL13.GL_CLAMP_TO_BORDER);

    shadowFBO = GL30.glGenFramebuffers();
    GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, shadowFBO);
    GL30.glFramebufferTexture2D(GL30.GL_FRAMEBUFFER, GL30.GL_DEPTH_ATTACHMENT, GL11.GL_TEXTURE_2D, depthMap, 0);
    GL11.glDrawBuffer(GL11.GL_NONE);
    GL11.glReadBuffer(GL11.GL_NONE);
    GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 0);
}

From source file:io.root.gfx.glutils.GL.java

License:Apache License

public static void glReadBuffer(int mode) {
    GL11.glReadBuffer(mode);
}

From source file:itdelatrisu.opsu.Utils.java

License:Open Source License

/**
 * Takes a screenshot./*from w ww . j av a  2s  .  com*/
 * @author http://wiki.lwjgl.org/index.php?title=Taking_Screen_Shots
 */
public static void takeScreenShot() {
    // create the screenshot directory
    File dir = Options.getScreenshotDir();
    if (!dir.isDirectory()) {
        if (!dir.mkdir()) {
            ErrorHandler.error("Failed to create screenshot directory.", null, false);
            return;
        }
    }

    // create file name
    SimpleDateFormat date = new SimpleDateFormat("yyyyMMdd_HHmmss");
    final File file = new File(dir,
            String.format("screenshot_%s.%s", date.format(new Date()), Options.getScreenshotFormat()));

    SoundController.playSound(SoundEffect.SHUTTER);

    // copy the screen to file
    final int width = Display.getWidth();
    final int height = Display.getHeight();
    final int bpp = 3; // assuming a 32-bit display with a byte each for red, green, blue, and alpha
    final ByteBuffer buffer = BufferUtils.createByteBuffer(width * height * bpp);
    GL11.glReadBuffer(GL11.GL_FRONT);
    GL11.glPixelStorei(GL11.GL_PACK_ALIGNMENT, 1);
    GL11.glReadPixels(0, 0, width, height, GL11.GL_RGB, GL11.GL_UNSIGNED_BYTE, buffer);
    new Thread() {
        @Override
        public void run() {
            try {
                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)) * bpp;
                        int r = buffer.get(i) & 0xFF;
                        int g = buffer.get(i + 1) & 0xFF;
                        int b = buffer.get(i + 2) & 0xFF;
                        image.setRGB(x, height - (y + 1), (0xFF << 24) | (r << 16) | (g << 8) | b);
                    }
                }
                ImageIO.write(image, Options.getScreenshotFormat(), file);
            } catch (Exception e) {
                ErrorHandler.error("Failed to take a screenshot.", e, true);
            }
        }
    }.start();
}

From source file:jeiexporter.render.RenderHelper.java

public static BufferedImage readPixels(int width, int height) {
    /*/*  w  w  w  .j  a v  a  2s .c om*/
     * Make sure we're reading from the back buffer, not the front buffer.
     * The front buffer is what is currently on-screen, and is useful for
     * screenshots.
     */
    GL11.glReadBuffer(GL11.GL_BACK);
    // Allocate a native data array to fit our pixels
    ByteBuffer buf = BufferUtils.createByteBuffer(width * height * 4);
    // And finally read the pixel data from the GPU...
    GL11.glReadPixels(0, Minecraft.getMinecraft().displayHeight - height, width, height, GL12.GL_BGRA,
            GL11.GL_UNSIGNED_BYTE, buf);
    // ...and turn it into a Java object we can do things to.
    BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    int[] pixels = new int[width * height];
    buf.asIntBuffer().get(pixels);
    img.setRGB(0, 0, width, height, pixels, 0, width);
    return img;
}

From source file:mss.View.java

License:Open Source License

private void saveScreenshot() {
    final File f = new File(View.class.getProtectionDomain().getCodeSource().getLocation().getPath());
    GL11.glReadBuffer(GL11.GL_FRONT);
    int width = Display.getWidth();
    int height = Display.getHeight();
    ByteBuffer byteBuffer = BufferUtils.createByteBuffer(width * height * 4);
    GL11.glReadPixels(0, 0, width, height, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, byteBuffer);
    ScreenshotSaver saver = new ScreenshotSaver(byteBuffer, f.getParent(), width, height);
    saver.start();//ww  w .j av a 2 s  .c  o  m
}

From source file:mwisbest.openbase.opengl.UtilsGL.java

License:Open Source License

public static void takeScreenshot(String filename) {
    GL11.glReadBuffer(GL11.GL_FRONT);
    int width = Display.getDisplayMode().getWidth();
    int height = Display.getDisplayMode().getHeight();
    int bpp = 4;/*from   w w w.  ja v  a 2s.com*/
    ByteBuffer buffer = BufferUtils.createByteBuffer(width * height * bpp);
    GL11.glReadPixels(0, 0, width, height, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, buffer);
    File file = new File(filename);
    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) * bpp;
            int r = buffer.get(i) & 0xFF;
            int g = buffer.get(i + 1) & 0xFF;
            int b = buffer.get(i + 2) & 0xFF;
            image.setRGB(x, height - (y + 1), 0xFF << 24 | r << 16 | g << 8 | b);
        }
    }

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

From source file:net.smert.frameworkgl.opengl.helpers.FrameBufferObjectHelper.java

License:Apache License

public void disableBuffers() {
    GL11.glDrawBuffer(GL11.GL_NONE);
    GL11.glReadBuffer(GL11.GL_NONE);
}