599 lines
18 KiB
Java
599 lines
18 KiB
Java
/*
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* Copyright (c) 2002-2011 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.lwjgl.test.opengl.sprites;
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import org.lwjgl.BufferUtils;
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import org.lwjgl.LWJGLException;
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import org.lwjgl.PointerBuffer;
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import org.lwjgl.Sys;
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import org.lwjgl.input.Keyboard;
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import org.lwjgl.input.Mouse;
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import org.lwjgl.opencl.*;
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import org.lwjgl.opencl.api.Filter;
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import org.lwjgl.opengl.ContextCapabilities;
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import org.lwjgl.opengl.Display;
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import org.lwjgl.opengl.DisplayMode;
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import org.lwjgl.opengl.GLContext;
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import java.awt.image.BufferedImage;
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import java.awt.image.Raster;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.nio.FloatBuffer;
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import java.nio.IntBuffer;
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import java.util.List;
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import java.util.Random;
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import javax.imageio.ImageIO;
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import static org.lwjgl.opencl.CL10.*;
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import static org.lwjgl.opencl.CL10GL.*;
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import static org.lwjgl.opengl.GL11.*;
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import static org.lwjgl.opengl.GL12.*;
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import static org.lwjgl.opengl.GL15.*;
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import static org.lwjgl.opengl.GL20.*;
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/**
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* Sprite rendering demo. In this version OpenCL is used for the animation
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* computations. CL_KHR_gl_sharing is required for sharing the animation
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* data with OpenGL for rendering.
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*
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* @author Spasi
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* @since 18/3/2011
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*/
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public final class SpriteShootoutCL {
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private static final int SCREEN_WIDTH = 800;
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private static final int SCREEN_HEIGHT = 600;
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private static final int ANIMATION_TICKS = 60;
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private boolean run = true;
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private boolean render = true;
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private boolean colorMask = true;
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private boolean animate = true;
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private boolean smooth;
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private boolean vsync;
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private int ballSize = 42;
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private int ballCount = 100 * 1000;
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private SpriteRenderer renderer;
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// OpenGL stuff
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private int texID;
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private int texBigID;
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private int texSmallID;
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// OpenCL stuff
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private IntBuffer errorCode = BufferUtils.createIntBuffer(1);
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private CLDevice clDevice;
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private CLContext clContext;
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private CLCommandQueue queue;
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private CLProgram program;
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private CLKernel kernel;
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private CLMem clTransform;
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private PointerBuffer kernelGlobalWorkSize;
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private SpriteShootoutCL() {
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}
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public static void main(String[] args) {
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try {
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new SpriteShootoutCL().start();
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} catch (LWJGLException e) {
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e.printStackTrace();
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}
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}
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private void start() throws LWJGLException {
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try {
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initGL();
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initCL();
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renderer = new SpriteRendererDefault();
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updateBalls(ballCount);
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run();
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} catch (Throwable t) {
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t.printStackTrace();
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} finally {
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destroy();
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}
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}
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private void initCL() throws LWJGLException {
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CL.create();
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final List<CLPlatform> platforms = CLPlatform.getPlatforms();
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if ( platforms == null )
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throw new RuntimeException("No OpenCL platforms found.");
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final Filter<CLDevice> glSharingFilter = new Filter<CLDevice>() {
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public boolean accept(final CLDevice device) {
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final CLDeviceCapabilities caps = CLCapabilities.getDeviceCapabilities(device);
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return caps.CL_KHR_gl_sharing;
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}
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};
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CLPlatform platform = null;
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List<CLDevice> devices = null;
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for ( CLPlatform p : platforms ) {
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// Find devices with GL sharing support
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devices = p.getDevices(CL_DEVICE_TYPE_GPU, glSharingFilter);
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if ( devices != null ) {
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platform = p;
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break;
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}
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}
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if ( devices == null )
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throw new RuntimeException("No OpenCL GPU device found.");
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clDevice = devices.get(0);
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// Make sure we use only 1 device
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devices.clear();
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devices.add(clDevice);
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clContext = CLContext.create(platform, devices, new CLContextCallback() {
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protected void handleMessage(final String errinfo, final ByteBuffer private_info) {
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System.out.println("[CONTEXT MESSAGE] " + errinfo);
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}
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}, Display.getDrawable(), errorCode);
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checkCLError(errorCode);
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queue = clCreateCommandQueue(clContext, clDevice, 0, errorCode);
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checkCLError(errorCode);
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}
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private void initGL() throws LWJGLException {
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Display.setLocation((Display.getDisplayMode().getWidth() - SCREEN_WIDTH) / 2,
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(Display.getDisplayMode().getHeight() - SCREEN_HEIGHT) / 2);
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Display.setDisplayMode(new DisplayMode(SCREEN_WIDTH, SCREEN_HEIGHT));
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Display.setTitle("Sprite Shootout - CL");
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Display.create();
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final ContextCapabilities caps = GLContext.getCapabilities();
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if ( !caps.OpenGL20 )
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throw new RuntimeException("OpenGL 2.0 is required for this demo.");
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// Setup viewport
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(0, SCREEN_WIDTH, 0, SCREEN_HEIGHT, -1.0, 1.0);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
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glClearColor(1.0f, 1.0f, 1.0f, 0.0f);
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// Create textures
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try {
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texSmallID = createTexture("res/ball_sm.png");
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texBigID = createTexture("res/ball.png");
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} catch (IOException e) {
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e.printStackTrace();
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System.exit(-1);
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}
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texID = texBigID;
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// Setup rendering state
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glEnable(GL_BLEND);
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glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
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glEnable(GL_ALPHA_TEST);
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glAlphaFunc(GL_GREATER, 0.0f);
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glColorMask(colorMask, colorMask, colorMask, false);
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glDepthMask(false);
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glDisable(GL_DEPTH_TEST);
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if ( caps.GL_ARB_compatibility || !caps.OpenGL31 )
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glEnable(GL_POINT_SPRITE);
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// Setup geometry
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org.lwjgl.opengl.Util.checkGLError();
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}
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private static int createTexture(final String path) throws IOException {
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final BufferedImage img = ImageIO.read(SpriteShootoutCL.class.getClassLoader().getResource(path));
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final int w = img.getWidth();
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final int h = img.getHeight();
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final ByteBuffer buffer = readImage(img);
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final int texID = glGenTextures();
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glBindTexture(GL_TEXTURE_2D, texID);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_BGRA, GL_UNSIGNED_BYTE, buffer);
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return texID;
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}
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private static ByteBuffer readImage(final BufferedImage img) throws IOException {
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final Raster raster = img.getRaster();
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final int bands = raster.getNumBands();
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final int w = img.getWidth();
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final int h = img.getHeight();
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final int size = w * h * bands;
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final byte[] pixels = new byte[size];
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raster.getDataElements(0, 0, w, h, pixels);
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final ByteBuffer pbuffer = BufferUtils.createByteBuffer(size);
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if ( bands == 4 ) {
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for ( int i = 0; i < (w * h * 4); i += 4 ) {
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// Pre-multiply alpha
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final float a = unpackUByte01(pixels[i + 3]);
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pbuffer.put(packUByte01(unpackUByte01(pixels[i + 2]) * a));
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pbuffer.put(packUByte01(unpackUByte01(pixels[i + 1]) * a));
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pbuffer.put(packUByte01(unpackUByte01(pixels[i + 0]) * a));
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pbuffer.put(pixels[i + 3]);
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}
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} else if ( bands == 3 ) {
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for ( int i = 0; i < (w * h * 3); i += 3 ) {
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pbuffer.put(pixels[i + 2]);
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pbuffer.put(pixels[i + 1]);
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pbuffer.put(pixels[i + 0]);
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}
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} else
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pbuffer.put(pixels, 0, size);
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pbuffer.flip();
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return pbuffer;
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}
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private static float unpackUByte01(final byte x) {
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return (x & 0xFF) / 255.0f;
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}
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private static byte packUByte01(final float x) {
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return (byte)(x * 255.0f);
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}
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private void updateBalls(final int count) {
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System.out.println("NUMBER OF BALLS: " + count);
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renderer.updateBalls(ballCount);
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}
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private void run() throws LWJGLException {
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long startTime = System.currentTimeMillis() + 5000;
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long fps = 0;
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long time = Sys.getTime();
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final int ticksPerUpdate = (int)(Sys.getTimerResolution() / ANIMATION_TICKS);
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renderer.render(false, true, 0);
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while ( run ) {
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Display.processMessages();
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handleInput();
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glClear(GL_COLOR_BUFFER_BIT);
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final long currTime = Sys.getTime();
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final int delta = (int)(currTime - time);
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if ( smooth || delta >= ticksPerUpdate ) {
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renderer.render(render, animate, delta);
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time = currTime;
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} else
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renderer.render(render, false, 0);
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Display.update(false);
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if ( startTime > System.currentTimeMillis() ) {
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fps++;
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} else {
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long timeUsed = 5000 + (startTime - System.currentTimeMillis());
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startTime = System.currentTimeMillis() + 5000;
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System.out.println("FPS: " + (Math.round(fps / (timeUsed / 1000.0) * 10) / 10.0) + ", Balls: " + ballCount);
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fps = 0;
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}
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}
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}
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private void handleInput() throws LWJGLException {
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if ( Display.isCloseRequested() )
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run = false;
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while ( Keyboard.next() ) {
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if ( Keyboard.getEventKeyState() )
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continue;
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switch ( Keyboard.getEventKey() ) {
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case Keyboard.KEY_1:
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case Keyboard.KEY_2:
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case Keyboard.KEY_3:
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case Keyboard.KEY_4:
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case Keyboard.KEY_5:
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case Keyboard.KEY_6:
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case Keyboard.KEY_7:
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case Keyboard.KEY_8:
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case Keyboard.KEY_9:
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case Keyboard.KEY_0:
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ballCount = 1 << (Keyboard.getEventKey() - Keyboard.KEY_1);
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updateBalls(ballCount);
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break;
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case Keyboard.KEY_ADD:
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case Keyboard.KEY_SUBTRACT:
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int mult;
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if ( Keyboard.isKeyDown(Keyboard.KEY_LSHIFT) || Keyboard.isKeyDown(Keyboard.KEY_RSHIFT) )
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mult = 1000;
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else if ( Keyboard.isKeyDown(Keyboard.KEY_LMENU) || Keyboard.isKeyDown(Keyboard.KEY_RMENU) )
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mult = 100;
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else if ( Keyboard.isKeyDown(Keyboard.KEY_LCONTROL) || Keyboard.isKeyDown(Keyboard.KEY_RCONTROL) )
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mult = 10;
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else
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mult = 1;
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if ( Keyboard.getEventKey() == Keyboard.KEY_SUBTRACT )
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mult = -mult;
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ballCount += mult * 100;
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if ( ballCount <= 0 )
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ballCount = 1;
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updateBalls(ballCount);
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break;
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case Keyboard.KEY_ESCAPE:
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run = false;
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break;
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case Keyboard.KEY_A:
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animate = !animate;
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System.out.println("Animation is now " + (animate ? "on" : "off") + ".");
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break;
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case Keyboard.KEY_C:
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colorMask = !colorMask;
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glColorMask(colorMask, colorMask, colorMask, false);
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System.out.println("Color mask is now " + (colorMask ? "on" : "off") + ".");
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// Disable alpha test when color mask is off, else we get no benefit.
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if ( colorMask ) {
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glEnable(GL_BLEND);
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glEnable(GL_ALPHA_TEST);
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} else {
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glDisable(GL_BLEND);
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glDisable(GL_ALPHA_TEST);
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}
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break;
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case Keyboard.KEY_R:
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render = !render;
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System.out.println("Rendering is now " + (render ? "on" : "off") + ".");
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break;
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case Keyboard.KEY_S:
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smooth = !smooth;
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System.out.println("Smooth animation is now " + (smooth ? "on" : "off") + ".");
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break;
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case Keyboard.KEY_T:
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if ( texID == texBigID ) {
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texID = texSmallID;
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ballSize = 16;
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} else {
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texID = texBigID;
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ballSize = 42;
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}
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renderer.updateBallSize();
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glBindTexture(GL_TEXTURE_2D, texID);
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System.out.println("Now using the " + (texID == texBigID ? "big" : "small") + " texture.");
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break;
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case Keyboard.KEY_V:
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vsync = !vsync;
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Display.setVSyncEnabled(vsync);
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System.out.println("VSYNC is now " + (vsync ? "enabled" : "disabled") + ".");
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break;
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}
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}
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while ( Mouse.next() ) ;
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}
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private static void checkCLError(IntBuffer buffer) {
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org.lwjgl.opencl.Util.checkCLError(buffer.get(0));
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}
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private void destroy() {
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if ( clContext != null )
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clReleaseContext(clContext);
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Display.destroy();
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System.exit(0);
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}
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private abstract class SpriteRenderer {
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protected int progID;
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protected int animVBO;
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protected void createKernel(final String source) {
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program = clCreateProgramWithSource(clContext, source, errorCode);
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checkCLError(errorCode);
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final int build = clBuildProgram(program, clDevice, "", null);
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if ( build != CL_SUCCESS ) {
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System.out.println("BUILD LOG: " + program.getBuildInfoString(clDevice, CL_PROGRAM_BUILD_LOG));
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throw new RuntimeException("Failed to build CL program, status: " + build);
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}
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kernel = clCreateKernel(program, "animate", errorCode);
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checkCLError(errorCode);
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kernelGlobalWorkSize = BufferUtils.createPointerBuffer(1);
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kernelGlobalWorkSize.put(0, ballCount);
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kernel.setArg(0, SCREEN_WIDTH);
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kernel.setArg(1, SCREEN_HEIGHT);
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}
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protected void createProgram(final int vshID) {
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final int fshID = glCreateShader(GL_FRAGMENT_SHADER);
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glShaderSource(fshID, "#version 110\n" +
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"uniform sampler2D COLOR_MAP;" +
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"void main(void) {\n" +
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" gl_FragColor = texture2D(COLOR_MAP, gl_PointCoord);\n" +
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"}");
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glCompileShader(fshID);
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if ( glGetShaderi(fshID, GL_COMPILE_STATUS) == GL_FALSE ) {
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System.out.println(glGetShaderInfoLog(fshID, glGetShaderi(fshID, GL_INFO_LOG_LENGTH)));
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throw new RuntimeException("Failed to compile fragment shader.");
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}
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progID = glCreateProgram();
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glAttachShader(progID, vshID);
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glAttachShader(progID, fshID);
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glLinkProgram(progID);
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if ( glGetProgrami(progID, GL_LINK_STATUS) == GL_FALSE ) {
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System.out.println(glGetProgramInfoLog(progID, glGetProgrami(progID, GL_INFO_LOG_LENGTH)));
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throw new RuntimeException("Failed to link shader program.");
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}
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glUseProgram(progID);
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glUniform1i(glGetUniformLocation(progID, "COLOR_MAP"), 0);
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glEnableClientState(GL_VERTEX_ARRAY);
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}
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public void updateBallSize() {
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glPointSize(ballSize);
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kernel.setArg(2, ballSize * 0.5f);
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}
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public void updateBalls(final int count) {
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kernelGlobalWorkSize.put(0, ballCount);
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final FloatBuffer transform = BufferUtils.createFloatBuffer(count * 4);
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final Random random = new Random();
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for ( int i = 0; i < count; i++ ) {
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transform.put((int)(random.nextFloat() * (SCREEN_WIDTH - ballSize)) + ballSize * 0.5f);
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transform.put((int)(random.nextFloat() * (SCREEN_HEIGHT - ballSize)) + ballSize * 0.5f);
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transform.put(random.nextFloat() * 0.4f - 0.2f);
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transform.put(random.nextFloat() * 0.4f - 0.2f);
|
|
}
|
|
transform.flip();
|
|
|
|
if ( animVBO != 0 ) {
|
|
clReleaseMemObject(clTransform);
|
|
glDeleteBuffers(animVBO);
|
|
}
|
|
|
|
animVBO = glGenBuffers();
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, animVBO);
|
|
glBufferData(GL_ARRAY_BUFFER, transform, GL_STATIC_DRAW);
|
|
glVertexPointer(2, GL_FLOAT, (4 * 4), 0);
|
|
|
|
clTransform = clCreateFromGLBuffer(clContext, CL_MEM_READ_WRITE, animVBO, errorCode);
|
|
checkCLError(errorCode);
|
|
kernel.setArg(4, clTransform);
|
|
}
|
|
|
|
protected abstract void render(boolean render, boolean animate, int delta);
|
|
|
|
}
|
|
|
|
private class SpriteRendererDefault extends SpriteRenderer {
|
|
|
|
SpriteRendererDefault() {
|
|
System.out.println("Shootout Implementation: OpenCL GPU animation");
|
|
|
|
final int vshID = glCreateShader(GL_VERTEX_SHADER);
|
|
glShaderSource(vshID, "#version 150\n" +
|
|
"void main(void) {\n" +
|
|
" gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n" +
|
|
"}");
|
|
glCompileShader(vshID);
|
|
if ( glGetShaderi(vshID, GL_COMPILE_STATUS) == GL_FALSE ) {
|
|
System.out.println(glGetShaderInfoLog(vshID, glGetShaderi(vshID, GL_INFO_LOG_LENGTH)));
|
|
throw new RuntimeException("Failed to compile vertex shader.");
|
|
}
|
|
|
|
createProgram(vshID);
|
|
|
|
org.lwjgl.opengl.Util.checkGLError();
|
|
|
|
createKernel("kernel void animate(\n" +
|
|
" const int WIDTH,\n" +
|
|
" const int HEIGHT,\n" +
|
|
" const float radius,\n" +
|
|
" const int delta,\n" +
|
|
" global float4 *balls\n" +
|
|
") {\n" +
|
|
" unsigned int b = get_global_id(0);\n" +
|
|
"\n" +
|
|
" float4 anim = balls[b];\n" +
|
|
" anim.xy = anim.xy + anim.zw * delta;\n" +
|
|
" float2 animC = clamp(anim.xy, (float2)radius, (float2)(WIDTH - radius, HEIGHT - radius));\n" +
|
|
" if ( anim.x != animC.x ) anim.z = -anim.z;\n" +
|
|
" if ( anim.y != animC.y ) anim.w = -anim.w;\n" +
|
|
"\n" +
|
|
" balls[b] = (float4)(animC, anim.zw);\n" +
|
|
"}");
|
|
|
|
updateBallSize();
|
|
}
|
|
|
|
public void updateBalls(final int count) {
|
|
super.updateBalls(count);
|
|
}
|
|
|
|
public void render(final boolean render, final boolean animate, final int delta) {
|
|
if ( animate ) {
|
|
//glFinish();
|
|
|
|
kernel.setArg(3, delta);
|
|
|
|
clEnqueueAcquireGLObjects(queue, clTransform, null, null);
|
|
clEnqueueNDRangeKernel(queue, kernel, 1, null, kernelGlobalWorkSize, null, null, null);
|
|
clEnqueueReleaseGLObjects(queue, clTransform, null, null);
|
|
|
|
clFinish(queue);
|
|
}
|
|
|
|
if ( render )
|
|
glDrawArrays(GL_POINTS, 0, ballCount);
|
|
}
|
|
|
|
}
|
|
|
|
}
|