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[Java-game-lib-cvs] SF.net SVN: java-game-lib:[3513] trunk/LWJGL/src
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From: <sp...@us...> - 2011-04-07 21:36:27
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Revision: 3513
http://java-game-lib.svn.sourceforge.net/java-game-lib/?rev=3513&view=rev
Author: spasi
Date: 2011-04-07 21:36:19 +0000 (Thu, 07 Apr 2011)
Log Message:
-----------
Added support for AMD_blend_minmax_factor & NV_texture_multisample.
Added sprite rendering samples.
Fixed ContextAttribs version checking for GL41.
Modified Paths:
--------------
trunk/LWJGL/src/java/org/lwjgl/opengl/ContextAttribs.java
trunk/LWJGL/src/java/org/lwjgl/test/opengl/shaders/ShadersTest.java
Added Paths:
-----------
trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/
trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/SpriteShootout.java
trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/SpriteShootout2P.java
trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/SpriteShootoutCL.java
trunk/LWJGL/src/templates/org/lwjgl/opengl/AMD_blend_minmax_factor.java
trunk/LWJGL/src/templates/org/lwjgl/opengl/NV_texture_multisample.java
Modified: trunk/LWJGL/src/java/org/lwjgl/opengl/ContextAttribs.java
===================================================================
--- trunk/LWJGL/src/java/org/lwjgl/opengl/ContextAttribs.java 2011-04-02 11:33:02 UTC (rev 3512)
+++ trunk/LWJGL/src/java/org/lwjgl/opengl/ContextAttribs.java 2011-04-07 21:36:19 UTC (rev 3513)
@@ -87,7 +87,7 @@
public ContextAttribs(final int majorVersion, final int minorVersion) {
if ( majorVersion < 0 || 4 < majorVersion ||
minorVersion < 0 ||
- (majorVersion == 4 && 0 < minorVersion) ||
+ (majorVersion == 4 && 1 < minorVersion) ||
(majorVersion == 3 && 3 < minorVersion) ||
(majorVersion == 2 && 1 < minorVersion) ||
(majorVersion == 1 && 5 < minorVersion) )
Modified: trunk/LWJGL/src/java/org/lwjgl/test/opengl/shaders/ShadersTest.java
===================================================================
--- trunk/LWJGL/src/java/org/lwjgl/test/opengl/shaders/ShadersTest.java 2011-04-02 11:33:02 UTC (rev 3512)
+++ trunk/LWJGL/src/java/org/lwjgl/test/opengl/shaders/ShadersTest.java 2011-04-07 21:36:19 UTC (rev 3513)
@@ -137,7 +137,7 @@
System.out.println("Setting display mode to: " + displayMode);
Display.setDisplayMode(displayMode);
- Display.create(new PixelFormat(8, 24, 0), "UNI".equalsIgnoreCase(args[0]) ? new ContextAttribs(3, 1) : null);
+ Display.create(new PixelFormat(8, 24, 0));
ShadersTest.displayMode = displayMode;
} catch (LWJGLException e) {
kill(e.getMessage());
Added: trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/SpriteShootout.java
===================================================================
--- trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/SpriteShootout.java (rev 0)
+++ trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/SpriteShootout.java 2011-04-07 21:36:19 UTC (rev 3513)
@@ -0,0 +1,714 @@
+package org.lwjgl.test.opengl.sprites;
+
+import org.lwjgl.BufferUtils;
+import org.lwjgl.LWJGLException;
+import org.lwjgl.Sys;
+import org.lwjgl.input.Keyboard;
+import org.lwjgl.input.Mouse;
+import org.lwjgl.opengl.*;
+
+import java.awt.image.BufferedImage;
+import java.awt.image.Raster;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.FloatBuffer;
+import java.util.Random;
+import javax.imageio.ImageIO;
+
+import static org.lwjgl.opengl.EXTTransformFeedback.*;
+import static org.lwjgl.opengl.GL11.*;
+import static org.lwjgl.opengl.GL12.*;
+import static org.lwjgl.opengl.GL15.*;
+import static org.lwjgl.opengl.GL20.*;
+import static org.lwjgl.opengl.GL30.*;
+
+/**
+ * Sprite rendering demo. Three implementations are supported:
+ * a) CPU animation + BufferData VBO update.
+ * b) CPU animation + MapBufferRange VBO update.
+ * c) GPU animation using transform feedback with a vertex shader.
+ *
+ * @author Spasi
+ * @since 18/3/2011
+ */
+public final class SpriteShootout {
+
+ private static final int SCREEN_WIDTH = 800;
+ private static final int SCREEN_HEIGHT = 600;
+
+ private static final int ANIMATION_TICKS = 60;
+
+ private boolean run = true;
+ private boolean render = true;
+ private boolean colorMask = true;
+ private boolean animate = true;
+ private boolean smooth;
+ private boolean vsync;
+
+ private int ballSize = 42;
+ private int ballCount = 100 * 1000;
+
+ private SpriteRenderer renderer;
+
+ // OpenGL stuff
+ private int texID;
+ private int texBigID;
+ private int texSmallID;
+
+ private SpriteShootout() {
+ }
+
+ public static void main(String[] args) {
+ try {
+ new SpriteShootout().start();
+ } catch (LWJGLException e) {
+ e.printStackTrace();
+ }
+ }
+
+ private void start() throws LWJGLException {
+ try {
+ initGL();
+
+ final ContextCapabilities caps = GLContext.getCapabilities();
+ if ( caps.OpenGL30 || caps.GL_EXT_transform_feedback )
+ renderer = new SpriteRendererTF();
+ else if ( caps.GL_ARB_map_buffer_range )
+ renderer = new SpriteRendererMapped();
+ else
+ renderer = new SpriteRendererPlain();
+
+ updateBalls(ballCount);
+ run();
+ } catch (Throwable t) {
+ t.printStackTrace();
+ } finally {
+ destroy();
+ }
+ }
+
+ private void initGL() throws LWJGLException {
+ Display.setLocation((Display.getDisplayMode().getWidth() - SCREEN_WIDTH) / 2,
+ (Display.getDisplayMode().getHeight() - SCREEN_HEIGHT) / 2);
+ Display.setDisplayMode(new DisplayMode(SCREEN_WIDTH, SCREEN_HEIGHT));
+ Display.setTitle("Sprite Shootout");
+ Display.create();
+ //Display.create(new PixelFormat(), new ContextAttribs(4, 1).withProfileCompatibility(true).withDebug(true));
+ //AMDDebugOutput.glDebugMessageCallbackAMD(new AMDDebugOutputCallback());
+
+ if ( !GLContext.getCapabilities().OpenGL20 )
+ throw new RuntimeException("OpenGL 2.0 is required for this demo.");
+
+ // Setup viewport
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(0, SCREEN_WIDTH, 0, SCREEN_HEIGHT, -1.0, 1.0);
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
+
+ glClearColor(1.0f, 1.0f, 1.0f, 0.0f);
+
+ // Create textures
+
+ try {
+ texSmallID = createTexture("res/ball_sm.png");
+ texBigID = createTexture("res/ball.png");
+ } catch (IOException e) {
+ e.printStackTrace();
+ System.exit(-1);
+ }
+ texID = texBigID;
+
+ // Setup rendering state
+
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+
+ glEnable(GL_ALPHA_TEST);
+ glAlphaFunc(GL_GREATER, 0.0f);
+
+ glColorMask(colorMask, colorMask, colorMask, false);
+ glDepthMask(false);
+ glDisable(GL_DEPTH_TEST);
+
+ // Setup geometry
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+
+ Util.checkGLError();
+ }
+
+ private static int createTexture(final String path) throws IOException {
+ final BufferedImage img = ImageIO.read(SpriteShootout.class.getClassLoader().getResource(path));
+
+ final int w = img.getWidth();
+ final int h = img.getHeight();
+
+ final ByteBuffer buffer = readImage(img);
+
+ final int texID = glGenTextures();
+
+ glBindTexture(GL_TEXTURE_2D, texID);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_BGRA, GL_UNSIGNED_BYTE, buffer);
+
+ return texID;
+ }
+
+ private static ByteBuffer readImage(final BufferedImage img) throws IOException {
+ final Raster raster = img.getRaster();
+
+ final int bands = raster.getNumBands();
+
+ final int w = img.getWidth();
+ final int h = img.getHeight();
+
+ final int size = w * h * bands;
+
+ final byte[] pixels = new byte[size];
+ raster.getDataElements(0, 0, w, h, pixels);
+
+ final ByteBuffer pbuffer = BufferUtils.createByteBuffer(size);
+
+ if ( bands == 4 ) {
+ for ( int i = 0; i < (w * h * 4); i += 4 ) {
+ // Pre-multiply alpha
+ final float a = unpackUByte01(pixels[i + 3]);
+ pbuffer.put(packUByte01(unpackUByte01(pixels[i + 2]) * a));
+ pbuffer.put(packUByte01(unpackUByte01(pixels[i + 1]) * a));
+ pbuffer.put(packUByte01(unpackUByte01(pixels[i + 0]) * a));
+ pbuffer.put(pixels[i + 3]);
+ }
+ } else if ( bands == 3 ) {
+ for ( int i = 0; i < (w * h * 3); i += 3 ) {
+ pbuffer.put(pixels[i + 2]);
+ pbuffer.put(pixels[i + 1]);
+ pbuffer.put(pixels[i + 0]);
+ }
+ } else
+ pbuffer.put(pixels, 0, size);
+
+ pbuffer.flip();
+
+ return pbuffer;
+ }
+
+ private static float unpackUByte01(final byte x) {
+ return (x & 0xFF) / 255.0f;
+ }
+
+ private static byte packUByte01(final float x) {
+ return (byte)(x * 255.0f);
+ }
+
+ private void updateBalls(final int count) {
+ System.out.println("NUMBER OF BALLS: " + count);
+ renderer.updateBalls(ballCount);
+ }
+
+ private void run() {
+ long startTime = System.currentTimeMillis() + 5000;
+ long fps = 0;
+
+ long time = Sys.getTime();
+ final int ticksPerUpdate = (int)(Sys.getTimerResolution() / ANIMATION_TICKS);
+
+ renderer.render(false, true, 0);
+
+ while ( run ) {
+ Display.processMessages();
+ handleInput();
+
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ final long currTime = Sys.getTime();
+ final int delta = (int)(currTime - time);
+ if ( smooth || delta >= ticksPerUpdate ) {
+ renderer.render(render, animate, delta);
+ time = currTime;
+ } else
+ renderer.render(render, false, 0);
+
+ Display.update(false);
+ //Display.sync(60);
+
+ if ( startTime > System.currentTimeMillis() ) {
+ fps++;
+ } else {
+ long timeUsed = 5000 + (startTime - System.currentTimeMillis());
+ startTime = System.currentTimeMillis() + 5000;
+ System.out.println("FPS: " + (Math.round(fps / (timeUsed / 1000.0) * 10) / 10.0) + ", Balls: " + ballCount);
+ fps = 0;
+ }
+ }
+ }
+
+ private void handleInput() {
+ if ( Display.isCloseRequested() )
+ run = false;
+
+ while ( Keyboard.next() ) {
+ if ( Keyboard.getEventKeyState() )
+ continue;
+
+ switch ( Keyboard.getEventKey() ) {
+ case Keyboard.KEY_1:
+ case Keyboard.KEY_2:
+ case Keyboard.KEY_3:
+ case Keyboard.KEY_4:
+ case Keyboard.KEY_5:
+ case Keyboard.KEY_6:
+ case Keyboard.KEY_7:
+ case Keyboard.KEY_8:
+ case Keyboard.KEY_9:
+ case Keyboard.KEY_0:
+ ballCount = 1 << (Keyboard.getEventKey() - Keyboard.KEY_1);
+ updateBalls(ballCount);
+ break;
+ case Keyboard.KEY_ADD:
+ case Keyboard.KEY_SUBTRACT:
+ int mult;
+ if ( Keyboard.isKeyDown(Keyboard.KEY_LSHIFT) || Keyboard.isKeyDown(Keyboard.KEY_RSHIFT) )
+ mult = 1000;
+ else if ( Keyboard.isKeyDown(Keyboard.KEY_LMENU) || Keyboard.isKeyDown(Keyboard.KEY_RMENU) )
+ mult = 100;
+ else if ( Keyboard.isKeyDown(Keyboard.KEY_LCONTROL) || Keyboard.isKeyDown(Keyboard.KEY_RCONTROL) )
+ mult = 10;
+ else
+ mult = 1;
+ if ( Keyboard.getEventKey() == Keyboard.KEY_SUBTRACT )
+ mult = -mult;
+ ballCount += mult * 100;
+ if ( ballCount <= 0 )
+ ballCount = 1;
+ updateBalls(ballCount);
+ break;
+ case Keyboard.KEY_ESCAPE:
+ run = false;
+ break;
+ case Keyboard.KEY_A:
+ animate = !animate;
+ System.out.println("Animation is now " + (animate ? "on" : "off") + ".");
+ break;
+ case Keyboard.KEY_C:
+ colorMask = !colorMask;
+ glColorMask(colorMask, colorMask, colorMask, false);
+ System.out.println("Color mask is now " + (colorMask ? "on" : "off") + ".");
+ // Disable alpha test when color mask is off, else we get no benefit.
+ if ( colorMask ) {
+ glEnable(GL_BLEND);
+ glEnable(GL_ALPHA_TEST);
+ } else {
+ glDisable(GL_BLEND);
+ glDisable(GL_ALPHA_TEST);
+ }
+ break;
+ case Keyboard.KEY_R:
+ render = !render;
+ System.out.println("Rendering is now " + (render ? "on" : "off") + ".");
+ break;
+ case Keyboard.KEY_S:
+ smooth = !smooth;
+ System.out.println("Smooth animation is now " + (smooth ? "on" : "off") + ".");
+ break;
+ case Keyboard.KEY_T:
+ if ( texID == texBigID ) {
+ texID = texSmallID;
+ ballSize = 16;
+ } else {
+ texID = texBigID;
+ ballSize = 42;
+ }
+ renderer.updateBallSize();
+ glBindTexture(GL_TEXTURE_2D, texID);
+ System.out.println("Now using the " + (texID == texBigID ? "big" : "small") + " texture.");
+ break;
+ case Keyboard.KEY_V:
+ vsync = !vsync;
+ Display.setVSyncEnabled(vsync);
+ System.out.println("VSYNC is now " + (vsync ? "enabled" : "disabled") + ".");
+ break;
+ }
+ }
+
+ while ( Mouse.next() ) ;
+ }
+
+ private void destroy() {
+ Display.destroy();
+ }
+
+ private abstract class SpriteRenderer {
+
+ protected float[] transform = { };
+
+ protected int vshID;
+ protected int progID;
+
+ protected void createProgram() {
+ final int fshID = glCreateShader(GL_FRAGMENT_SHADER);
+ glShaderSource(fshID, "uniform sampler2D COLOR_MAP;\n" +
+ "void main(void) {\n" +
+ " gl_FragColor = texture2D(COLOR_MAP, gl_PointCoord);\n" +
+ "}");
+ glCompileShader(fshID);
+ if ( glGetShader(fshID, GL_COMPILE_STATUS) == GL_FALSE ) {
+ System.out.println(glGetShaderInfoLog(fshID, glGetShader(fshID, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to compile fragment shader.");
+ }
+
+ progID = glCreateProgram();
+ glAttachShader(progID, vshID);
+ glAttachShader(progID, fshID);
+ glLinkProgram(progID);
+ if ( glGetProgram(progID, GL_LINK_STATUS) == GL_FALSE ) {
+ System.out.println(glGetProgramInfoLog(progID, glGetProgram(progID, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to link shader program.");
+ }
+
+ glUseProgram(progID);
+ glUniform1i(glGetUniformLocation(progID, "COLOR_MAP"), 0);
+
+ updateBallSize();
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+ }
+
+ public void updateBallSize() {
+ glPointSize(ballSize);
+ }
+
+ public void updateBalls(final int count) {
+ final Random random = new Random();
+
+ final float[] newTransform = new float[count * 4];
+ System.arraycopy(transform, 0, newTransform, 0, Math.min(transform.length, newTransform.length));
+ if ( newTransform.length > transform.length ) {
+ for ( int i = transform.length; i < newTransform.length; ) {
+ newTransform[i++] = (int)(random.nextFloat() * (SCREEN_WIDTH - ballSize) + ballSize * 0.5f);
+ newTransform[i++] = (int)(random.nextFloat() * (SCREEN_HEIGHT - ballSize) + ballSize * 0.5f);
+ newTransform[i++] = random.nextFloat() * 0.4f - 0.2f;
+ newTransform[i++] = random.nextFloat() * 0.4f - 0.2f;
+ }
+ }
+ transform = newTransform;
+ }
+
+ protected void animate(final FloatBuffer geom, final int ballIndex, final int batchSize, final int delta) {
+ final float[] transform = this.transform;
+
+ final float ballRadius = ballSize * 0.5f;
+ final float boundW = SCREEN_WIDTH - ballRadius;
+ final float boundH = SCREEN_HEIGHT - ballRadius;
+
+ for ( int b = ballIndex * 4, len = (ballIndex + batchSize) * 4; b < len; b += 4 ) {
+ float x = transform[b + 0];
+ float dx = transform[b + 2];
+
+ x += dx * delta;
+ if ( x < ballRadius ) {
+ x = ballRadius;
+ transform[b + 2] = -dx;
+ } else if ( x > boundW ) {
+ x = boundW;
+ transform[b + 2] = -dx;
+ }
+ transform[b + 0] = x;
+
+ float y = transform[b + 1];
+ float dy = transform[b + 3];
+
+ y += dy * delta;
+ if ( y < ballRadius ) {
+ y = ballRadius;
+ transform[b + 3] = -dy;
+ } else if ( y > boundH ) {
+ y = boundH;
+ transform[b + 3] = -dy;
+ }
+ transform[b + 1] = y;
+
+ geom.put(x).put(y);
+ }
+ geom.clear();
+ }
+
+ protected abstract void render(boolean render, boolean animate, int delta);
+
+ }
+
+ private abstract class SpriteRendererBatched extends SpriteRenderer {
+
+ protected static final int BALLS_PER_BATCH = 10 * 1000;
+
+ SpriteRendererBatched() {
+ vshID = glCreateShader(GL_VERTEX_SHADER);
+ glShaderSource(vshID, "void main(void) {\n" +
+ " gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n" +
+ "}");
+ glCompileShader(vshID);
+ if ( glGetShader(vshID, GL_COMPILE_STATUS) == GL_FALSE ) {
+ System.out.println(glGetShaderInfoLog(vshID, glGetShader(vshID, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to compile vertex shader.");
+ }
+
+ createProgram();
+ }
+
+ }
+
+ private class SpriteRendererPlain extends SpriteRendererBatched {
+
+ private final FloatBuffer geom;
+
+ protected int[] animVBO;
+
+ SpriteRendererPlain() {
+ System.out.println("Shootout Implementation: CPU animation & BufferData");
+ geom = BufferUtils.createFloatBuffer(BALLS_PER_BATCH * 4 * 2);
+ }
+
+ public void updateBalls(final int count) {
+ super.updateBalls(count);
+
+ final int batchCount = count / BALLS_PER_BATCH + (count % BALLS_PER_BATCH == 0 ? 0 : 1);
+ if ( animVBO != null && batchCount == animVBO.length )
+ return;
+
+ final int[] newAnimVBO = new int[batchCount];
+ if ( animVBO != null ) {
+ System.arraycopy(animVBO, 0, newAnimVBO, 0, Math.min(animVBO.length, newAnimVBO.length));
+ for ( int i = newAnimVBO.length; i < animVBO.length; i++ )
+ glDeleteBuffers(animVBO[i]);
+ }
+ for ( int i = animVBO == null ? 0 : animVBO.length; i < newAnimVBO.length; i++ ) {
+ newAnimVBO[i] = glGenBuffers();
+ glBindBuffer(GL_ARRAY_BUFFER, newAnimVBO[i]);
+ }
+
+ animVBO = newAnimVBO;
+ }
+
+ public void render(final boolean render, final boolean animate, final int delta) {
+ int batchSize = Math.min(ballCount, BALLS_PER_BATCH);
+ int ballIndex = 0;
+ int vboIndex = 0;
+ while ( ballIndex < ballCount ) {
+ glBindBuffer(GL_ARRAY_BUFFER, animVBO[vboIndex++]);
+
+ if ( animate )
+ animate(ballIndex, batchSize, delta);
+
+ if ( render ) {
+ glVertexPointer(2, GL_FLOAT, 0, 0);
+ glDrawArrays(GL_POINTS, 0, batchSize);
+ }
+
+ ballIndex += batchSize;
+ batchSize = Math.min(ballCount - ballIndex, BALLS_PER_BATCH);
+ }
+ }
+
+ private void animate(final int ballIndex, final int batchSize, final int delta) {
+ animate(geom, ballIndex, batchSize, delta);
+
+ glBufferData(GL_ARRAY_BUFFER, geom.capacity() * 4, GL_STREAM_DRAW);
+ glBufferSubData(GL_ARRAY_BUFFER, 0, geom);
+ }
+ }
+
+ private class SpriteRendererMapped extends SpriteRendererBatched {
+
+ private ByteBuffer[] mapBuffer;
+ private FloatBuffer[] geomBuffer;
+
+ protected int animVBO;
+
+ SpriteRendererMapped() {
+ System.out.println("Shootout Implementation: CPU animation & MapBufferRange");
+ }
+
+ public void updateBalls(final int count) {
+ super.updateBalls(count);
+
+ final int batchCount = count / BALLS_PER_BATCH + (count % BALLS_PER_BATCH == 0 ? 0 : 1);
+ mapBuffer = new ByteBuffer[batchCount];
+ geomBuffer = new FloatBuffer[batchCount];
+
+ animVBO = glGenBuffers();
+ glBindBuffer(GL_ARRAY_BUFFER, animVBO);
+ glBufferData(GL_ARRAY_BUFFER, ballCount * (2 * 4), GL_DYNAMIC_DRAW);
+ glVertexPointer(2, GL_FLOAT, 0, 0);
+ }
+
+ public void render(final boolean render, final boolean animate, final int delta) {
+ int batchSize = Math.min(ballCount, BALLS_PER_BATCH);
+ int ballIndex = 0;
+ int batchIndex = 0;
+ while ( ballIndex < ballCount ) {
+ if ( animate ) {
+ final ByteBuffer buffer = glMapBufferRange(GL_ARRAY_BUFFER,
+ ballIndex * (2 * 4),
+ batchSize * (2 * 4),
+ GL_MAP_WRITE_BIT | GL_MAP_UNSYNCHRONIZED_BIT,
+ mapBuffer[batchIndex]);
+ if ( buffer != mapBuffer[batchIndex] ) {
+ mapBuffer[batchIndex] = buffer;
+ geomBuffer[batchIndex] = mapBuffer[batchIndex].asFloatBuffer();
+ }
+
+ animate(geomBuffer[batchIndex], ballIndex, batchSize, delta);
+
+ glUnmapBuffer(GL_ARRAY_BUFFER);
+ }
+
+ if ( render )
+ glDrawArrays(GL_POINTS, ballIndex, batchSize);
+
+ batchIndex++;
+ ballIndex += batchSize;
+ batchSize = Math.min(ballCount - ballIndex, BALLS_PER_BATCH);
+ }
+ }
+ }
+
+ private class SpriteRendererTF extends SpriteRenderer {
+
+ private int progIDTF;
+ private int ballSizeLoc;
+ private int deltaLoc;
+
+ private int[] tfVBO = new int[2];
+ private int currVBO;
+
+ SpriteRendererTF() {
+ System.out.println("Shootout Implementation: TF GPU animation");
+
+ // Transform-feedback program
+
+ final int vshID = glCreateShader(GL_VERTEX_SHADER);
+ glShaderSource(vshID, "#version 130\n" +
+ "const float WIDTH = " + SCREEN_WIDTH + ";\n" +
+ "const float HEIGHT = " + SCREEN_HEIGHT + ";\n" +
+ "uniform float ballSize;\n" + // ballSize / 2
+ "uniform float delta;\n" +
+ "void main(void) {\n" +
+ " vec4 anim = gl_Vertex;\n" +
+ " anim.xy = anim.xy + anim.zw * delta;\n" +
+ " vec2 animC = clamp(anim.xy, vec2(ballSize), vec2(WIDTH - ballSize, HEIGHT - ballSize));\n" +
+ " if ( anim.x != animC.x ) anim.z = -anim.z;\n" +
+ " if ( anim.y != animC.y ) anim.w = -anim.w;\n" +
+ " gl_Position = vec4(animC, anim.zw);\n" +
+ "}");
+ glCompileShader(vshID);
+ if ( glGetShader(vshID, GL_COMPILE_STATUS) == GL_FALSE ) {
+ System.out.println(glGetShaderInfoLog(vshID, glGetShader(vshID, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to compile vertex shader.");
+ }
+
+ progIDTF = glCreateProgram();
+ glAttachShader(progIDTF, vshID);
+ glTransformFeedbackVaryings(progIDTF, new CharSequence[] { "gl_Position" }, GL_SEPARATE_ATTRIBS);
+ glLinkProgram(progIDTF);
+ if ( glGetProgram(progIDTF, GL_LINK_STATUS) == GL_FALSE ) {
+ System.out.println(glGetProgramInfoLog(progIDTF, glGetProgram(progIDTF, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to link shader program.");
+ }
+
+ glUseProgram(progIDTF);
+
+ ballSizeLoc = glGetUniformLocation(progIDTF, "ballSize");
+ deltaLoc = glGetUniformLocation(progIDTF, "delta");
+
+ glUniform1f(ballSizeLoc, ballSize * 0.5f);
+
+ // -----------------
+
+ this.vshID = glCreateShader(GL_VERTEX_SHADER);
+ glShaderSource(this.vshID, "void main(void) {\n" +
+ " gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n" +
+ "}");
+ glCompileShader(this.vshID);
+ if ( glGetShader(this.vshID, GL_COMPILE_STATUS) == GL_FALSE ) {
+ System.out.println(glGetShaderInfoLog(this.vshID, glGetShader(this.vshID, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to compile vertex shader.");
+ }
+
+ createProgram();
+ }
+
+ public void updateBallSize() {
+ glUseProgram(progIDTF);
+ glUniform1f(ballSizeLoc, ballSize * 0.5f);
+
+ glUseProgram(progID);
+ super.updateBallSize();
+ }
+
+ public void updateBalls(final int count) {
+ super.updateBalls(count);
+
+ if ( tfVBO[0] != 0 ) {
+ for ( int i = 0; i < tfVBO.length; i++ )
+ glDeleteBuffers(tfVBO[i]);
+ }
+
+ final FloatBuffer transform = BufferUtils.createFloatBuffer(count * 4);
+ transform.put(this.transform);
+ transform.flip();
+
+ for ( int i = 0; i < tfVBO.length; i++ ) {
+ tfVBO[i] = glGenBuffers();
+ glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, tfVBO[i]);
+ glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER, transform, GL_STATIC_DRAW);
+ }
+
+ glBindBuffer(GL_ARRAY_BUFFER, tfVBO[0]);
+ glVertexPointer(2, GL_FLOAT, (4 * 4), 0);
+ }
+
+ public void render(final boolean render, final boolean animate, final int delta) {
+ if ( animate ) {
+ glUseProgram(progIDTF);
+ glUniform1f(deltaLoc, delta);
+
+ final int vbo = currVBO;
+ currVBO = 1 - currVBO;
+
+ glBindBuffer(GL_ARRAY_BUFFER, tfVBO[vbo]);
+ glVertexPointer(4, GL_FLOAT, 0, 0);
+
+ glEnable(GL_RASTERIZER_DISCARD);
+ if ( GLContext.getCapabilities().OpenGL30 ) {
+ glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, 0, tfVBO[1 - vbo]);
+
+ glBeginTransformFeedback(GL_POINTS);
+ glDrawArrays(GL_POINTS, 0, ballCount);
+ glEndTransformFeedback();
+ } else {
+ glBindBufferBaseEXT(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, 0, tfVBO[1 - vbo]);
+
+ glBeginTransformFeedbackEXT(GL_POINTS);
+ glDrawArrays(GL_POINTS, 0, ballCount);
+ glEndTransformFeedbackEXT();
+ }
+ glDisable(GL_RASTERIZER_DISCARD);
+
+ glUseProgram(progID);
+ glVertexPointer(2, GL_FLOAT, (4 * 4), 0);
+ }
+
+ if ( render )
+ glDrawArrays(GL_POINTS, 0, ballCount);
+ }
+
+ }
+
+}
\ No newline at end of file
Added: trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/SpriteShootout2P.java
===================================================================
--- trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/SpriteShootout2P.java (rev 0)
+++ trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/SpriteShootout2P.java 2011-04-07 21:36:19 UTC (rev 3513)
@@ -0,0 +1,591 @@
+package org.lwjgl.test.opengl.sprites;
+
+import org.lwjgl.BufferUtils;
+import org.lwjgl.LWJGLException;
+import org.lwjgl.Sys;
+import org.lwjgl.input.Keyboard;
+import org.lwjgl.input.Mouse;
+import org.lwjgl.opengl.*;
+
+import java.awt.image.BufferedImage;
+import java.awt.image.Raster;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.FloatBuffer;
+import java.util.Random;
+import javax.imageio.ImageIO;
+
+import static org.lwjgl.opengl.EXTTransformFeedback.*;
+import static org.lwjgl.opengl.GL11.*;
+import static org.lwjgl.opengl.GL15.*;
+import static org.lwjgl.opengl.GL20.*;
+import static org.lwjgl.opengl.GL30.*;
+import static org.lwjgl.opengl.GL32.*;
+
+/**
+ * Sprite rendering demo. In this version we're doing the animation
+ * computations on the GPU, using transform feedback and a vertex
+ * shader, then rendering is performed in 2 passes, with depth testing
+ * enabled:
+ * 1) Sprites are rendered front-to-back, opaque fragments only, blending is disabled.
+ * 2) Sprites are rendered back-to-front, transparent fragments only, blending is enabled.
+ * Sorting is free, because we're animating double the amount of sprites rendered, the
+ * first batch is sorted f2b, the second is sorted b2f. Ordering is achieved by modifying
+ * the z-axis position of the sprites in the vertex shader.
+ *
+ * @author Spasi
+ * @since 18/3/2011
+ */
+public final class SpriteShootout2P {
+
+ private static final int SCREEN_WIDTH = 800;
+ private static final int SCREEN_HEIGHT = 600;
+
+ private static final int ANIMATION_TICKS = 60;
+
+ private boolean run = true;
+ private boolean render = true;
+ private boolean colorMask = true;
+ private boolean animate = true;
+ private boolean smooth;
+ private boolean vsync;
+
+ private int ballSize = 42;
+ private int ballCount = 100 * 1000;
+
+ private SpriteRenderer renderer;
+
+ // OpenGL stuff
+ private int texID;
+ private int texBigID;
+ private int texSmallID;
+
+ private SpriteShootout2P() {
+ }
+
+ public static void main(String[] args) {
+ try {
+ new SpriteShootout2P().start();
+ } catch (LWJGLException e) {
+ e.printStackTrace();
+ }
+ }
+
+ private void start() throws LWJGLException {
+ try {
+ initGL();
+
+ renderer = new SpriteRendererTF();
+
+ updateBalls(ballCount);
+ run();
+ } catch (Throwable t) {
+ t.printStackTrace();
+ } finally {
+ destroy();
+ }
+ }
+
+ private void initGL() throws LWJGLException {
+ Display.setLocation((Display.getDisplayMode().getWidth() - SCREEN_WIDTH) / 2,
+ (Display.getDisplayMode().getHeight() - SCREEN_HEIGHT) / 2);
+ Display.setDisplayMode(new DisplayMode(SCREEN_WIDTH, SCREEN_HEIGHT));
+ Display.setTitle("Sprite Shootout 2-pass");
+ Display.create(new PixelFormat(0, 24, 0));
+ //Display.create(new PixelFormat(), new ContextAttribs(4, 1).withProfileCompatibility(true).withDebug(true));
+ //AMDDebugOutput.glDebugMessageCallbackAMD(new AMDDebugOutputCallback());
+
+ final ContextCapabilities caps = GLContext.getCapabilities();
+ if ( !(caps.OpenGL30 || (caps.OpenGL20 && caps.GL_EXT_transform_feedback)) )
+ throw new RuntimeException("OpenGL 3.0 or 2.0 + EXT_transform_feedback is required for this demo.");
+
+ // Setup viewport
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(0, SCREEN_WIDTH, 0, SCREEN_HEIGHT, -1.0, 1.0);
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
+
+ glClearColor(1.0f, 1.0f, 1.0f, 0.0f);
+
+ // Create textures
+
+ try {
+ texSmallID = createTexture("res/ball_sm.png");
+ texBigID = createTexture("res/ball.png");
+ } catch (IOException e) {
+ e.printStackTrace();
+ System.exit(-1);
+ }
+ texID = texBigID;
+
+ // Setup rendering state
+
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+
+ glEnable(GL_ALPHA_TEST);
+
+ glColorMask(colorMask, colorMask, colorMask, false);
+ glDepthMask(true);
+ glEnable(GL_DEPTH_TEST);
+ glDepthFunc(GL_LESS);
+ glClearDepth(1.0f);
+
+ // Setup geometry
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+
+ Util.checkGLError();
+ }
+
+ private static int createTexture(final String path) throws IOException {
+ final BufferedImage img = ImageIO.read(SpriteShootout2P.class.getClassLoader().getResource(path));
+
+ final int w = img.getWidth();
+ final int h = img.getHeight();
+
+ final ByteBuffer buffer = readImage(img);
+
+ final int texID = glGenTextures();
+
+ glBindTexture(GL_TEXTURE_2D, texID);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_BGRA, GL_UNSIGNED_BYTE, buffer);
+
+ return texID;
+ }
+
+ private static ByteBuffer readImage(final BufferedImage img) throws IOException {
+ final Raster raster = img.getRaster();
+
+ final int bands = raster.getNumBands();
+
+ final int w = img.getWidth();
+ final int h = img.getHeight();
+
+ final int size = w * h * bands;
+
+ final byte[] pixels = new byte[size];
+ raster.getDataElements(0, 0, w, h, pixels);
+
+ final ByteBuffer pbuffer = BufferUtils.createByteBuffer(size);
+
+ if ( bands == 4 ) {
+ for ( int i = 0; i < (w * h * 4); i += 4 ) {
+ // Pre-multiply alpha
+ final float a = unpackUByte01(pixels[i + 3]);
+ pbuffer.put(packUByte01(unpackUByte01(pixels[i + 2]) * a));
+ pbuffer.put(packUByte01(unpackUByte01(pixels[i + 1]) * a));
+ pbuffer.put(packUByte01(unpackUByte01(pixels[i + 0]) * a));
+ pbuffer.put(pixels[i + 3]);
+ }
+ } else if ( bands == 3 ) {
+ for ( int i = 0; i < (w * h * 3); i += 3 ) {
+ pbuffer.put(pixels[i + 2]);
+ pbuffer.put(pixels[i + 1]);
+ pbuffer.put(pixels[i + 0]);
+ }
+ } else
+ pbuffer.put(pixels, 0, size);
+
+ pbuffer.flip();
+
+ return pbuffer;
+ }
+
+ private static float unpackUByte01(final byte x) {
+ return (x & 0xFF) / 255.0f;
+ }
+
+ private static byte packUByte01(final float x) {
+ return (byte)(x * 255.0f);
+ }
+
+ private void updateBalls(final int count) {
+ System.out.println("NUMBER OF BALLS: " + count);
+ renderer.updateBalls(ballCount);
+ }
+
+ private void run() {
+ long startTime = System.currentTimeMillis() + 5000;
+ long fps = 0;
+
+ long time = Sys.getTime();
+ final int ticksPerUpdate = (int)(Sys.getTimerResolution() / ANIMATION_TICKS);
+
+ renderer.render(false, true, 0);
+
+ while ( run ) {
+ Display.processMessages();
+ handleInput();
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ final long currTime = Sys.getTime();
+ final int delta = (int)(currTime - time);
+ if ( smooth || delta >= ticksPerUpdate ) {
+ renderer.render(render, animate, delta);
+ time = currTime;
+ } else
+ renderer.render(render, false, 0);
+
+ Display.update(false);
+ //Display.sync(60);
+
+ if ( startTime > System.currentTimeMillis() ) {
+ fps++;
+ } else {
+ long timeUsed = 5000 + (startTime - System.currentTimeMillis());
+ startTime = System.currentTimeMillis() + 5000;
+ System.out.println("FPS: " + (Math.round(fps / (timeUsed / 1000.0) * 10) / 10.0) + ", Balls: " + ballCount);
+ fps = 0;
+ }
+ }
+ }
+
+ private void handleInput() {
+ if ( Display.isCloseRequested() )
+ run = false;
+
+ while ( Keyboard.next() ) {
+ if ( Keyboard.getEventKeyState() )
+ continue;
+
+ switch ( Keyboard.getEventKey() ) {
+ case Keyboard.KEY_1:
+ case Keyboard.KEY_2:
+ case Keyboard.KEY_3:
+ case Keyboard.KEY_4:
+ case Keyboard.KEY_5:
+ case Keyboard.KEY_6:
+ case Keyboard.KEY_7:
+ case Keyboard.KEY_8:
+ case Keyboard.KEY_9:
+ case Keyboard.KEY_0:
+ ballCount = 1 << (Keyboard.getEventKey() - Keyboard.KEY_1);
+ updateBalls(ballCount);
+ break;
+ case Keyboard.KEY_ADD:
+ case Keyboard.KEY_SUBTRACT:
+ int mult;
+ if ( Keyboard.isKeyDown(Keyboard.KEY_LSHIFT) || Keyboard.isKeyDown(Keyboard.KEY_RSHIFT) ) {
+ mult = 1000;
+ if ( Keyboard.isKeyDown(Keyboard.KEY_LCONTROL) || Keyboard.isKeyDown(Keyboard.KEY_RCONTROL) )
+ mult *= 5;
+ } else if ( Keyboard.isKeyDown(Keyboard.KEY_LMENU) || Keyboard.isKeyDown(Keyboard.KEY_RMENU) )
+ mult = 100;
+ else if ( Keyboard.isKeyDown(Keyboard.KEY_LCONTROL) || Keyboard.isKeyDown(Keyboard.KEY_RCONTROL) )
+ mult = 10;
+ else
+ mult = 1;
+ if ( Keyboard.getEventKey() == Keyboard.KEY_SUBTRACT )
+ mult = -mult;
+ ballCount += mult * 100;
+ if ( ballCount <= 0 )
+ ballCount = 1;
+ updateBalls(ballCount);
+ break;
+ case Keyboard.KEY_ESCAPE:
+ run = false;
+ break;
+ case Keyboard.KEY_A:
+ animate = !animate;
+ System.out.println("Animation is now " + (animate ? "on" : "off") + ".");
+ break;
+ case Keyboard.KEY_C:
+ colorMask = !colorMask;
+ glColorMask(colorMask, colorMask, colorMask, false);
+ System.out.println("Color mask is now " + (colorMask ? "on" : "off") + ".");
+ // Disable alpha test when color mask is off, else we get no benefit.
+ if ( colorMask ) {
+ glEnable(GL_BLEND);
+ glEnable(GL_ALPHA_TEST);
+ } else {
+ glDisable(GL_BLEND);
+ glDisable(GL_ALPHA_TEST);
+ }
+ break;
+ case Keyboard.KEY_R:
+ render = !render;
+ System.out.println("Rendering is now " + (render ? "on" : "off") + ".");
+ break;
+ case Keyboard.KEY_S:
+ smooth = !smooth;
+ System.out.println("Smooth animation is now " + (smooth ? "on" : "off") + ".");
+ break;
+ case Keyboard.KEY_T:
+ if ( texID == texBigID ) {
+ texID = texSmallID;
+ ballSize = 16;
+ } else {
+ texID = texBigID;
+ ballSize = 42;
+ }
+ renderer.updateBallSize();
+ glBindTexture(GL_TEXTURE_2D, texID);
+ System.out.println("Now using the " + (texID == texBigID ? "big" : "small") + " texture.");
+ break;
+ case Keyboard.KEY_V:
+ vsync = !vsync;
+ Display.setVSyncEnabled(vsync);
+ System.out.println("VSYNC is now " + (vsync ? "enabled" : "disabled") + ".");
+ break;
+ }
+ }
+
+ while ( Mouse.next() ) ;
+ }
+
+ private void destroy() {
+ Display.destroy();
+ }
+
+ private abstract class SpriteRenderer {
+
+ protected int progID;
+
+ protected void createPrograms(final int vshID) {
+ // Opaque pass
+
+ final int fshID = glCreateShader(GL_FRAGMENT_SHADER);
+ glShaderSource(fshID, "uniform sampler2D COLOR_MAP;\n" +
+ "void main(void) {\n" +
+ " gl_FragColor = texture2D(COLOR_MAP, gl_PointCoord);\n" +
+ "}");
+ glCompileShader(fshID);
+ if ( glGetShader(fshID, GL_COMPILE_STATUS) == GL_FALSE ) {
+ System.out.println(glGetShaderInfoLog(fshID, glGetShader(fshID, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to compile fragment shader.");
+ }
+
+ progID = glCreateProgram();
+ glAttachShader(progID, vshID);
+ glAttachShader(progID, fshID);
+ glLinkProgram(progID);
+ if ( glGetProgram(progID, GL_LINK_STATUS) == GL_FALSE ) {
+ System.out.println(glGetProgramInfoLog(progID, glGetProgram(progID, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to link shader program.");
+ }
+
+ glUseProgram(progID);
+ glUniform1i(glGetUniformLocation(progID, "COLOR_MAP"), 0);
+
+ updateBallSize();
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+ }
+
+ public void updateBallSize() {
+ glPointSize(ballSize);
+ }
+
+ protected abstract void updateBalls(final int count);
+
+ protected abstract void render(boolean render, boolean animate, int delta);
+
+ }
+
+ private class SpriteRendererTF extends SpriteRenderer {
+
+ private int progIDTF;
+ private int ballSizeLoc;
+ private int deltaLoc;
+
+ private int[] tfVBO = new int[2];
+ private int currVBO;
+
+ private int depthVBO;
+ private int depthLoc;
+
+ SpriteRendererTF() {
+ System.out.println("Shootout Implementation: TF GPU animation & 2-pass rendering");
+
+ // Transform-feedback program
+
+ int vshID = glCreateShader(GL_VERTEX_SHADER);
+ glShaderSource(vshID, "#version 130\n" +
+ "const float WIDTH = " + SCREEN_WIDTH + ";\n" +
+ "const float HEIGHT = " + SCREEN_HEIGHT + ";\n" +
+ "uniform float ballSize;\n" + // ballSize / 2
+ "uniform float delta;\n" +
+ "void main(void) {\n" +
+ " vec4 anim = gl_Vertex;\n" +
+ " anim.xy = anim.xy + anim.zw * delta;\n" +
+ " vec2 animC = clamp(anim.xy, vec2(ballSize), vec2(WIDTH - ballSize, HEIGHT - ballSize));\n" +
+ " if ( anim.x != animC.x ) anim.z = -anim.z;\n" +
+ " if ( anim.y != animC.y ) anim.w = -anim.w;\n" +
+ " gl_Position = vec4(animC, anim.zw);\n" +
+ "}");
+ glCompileShader(vshID);
+ if ( glGetShader(vshID, GL_COMPILE_STATUS) == GL_FALSE ) {
+ System.out.println(glGetShaderInfoLog(vshID, glGetShader(vshID, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to compile vertex shader.");
+ }
+
+ progIDTF = glCreateProgram();
+ glAttachShader(progIDTF, vshID);
+ glTransformFeedbackVaryings(progIDTF, new CharSequence[] { "gl_Position" }, GL_SEPARATE_ATTRIBS);
+ glLinkProgram(progIDTF);
+ if ( glGetProgram(progIDTF, GL_LINK_STATUS) == GL_FALSE ) {
+ System.out.println(glGetProgramInfoLog(progIDTF, glGetProgram(progIDTF, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to link shader program.");
+ }
+
+ glUseProgram(progIDTF);
+
+ ballSizeLoc = glGetUniformLocation(progIDTF, "ballSize");
+ deltaLoc = glGetUniformLocation(progIDTF, "delta");
+
+ glUniform1f(ballSizeLoc, ballSize * 0.5f);
+
+ // -----------------
+
+ vshID = glCreateShader(GL_VERTEX_SHADER);
+ glShaderSource(vshID, "#version 130\n" +
+ "in float depth;\n" +
+ "void main(void) {\n" +
+ " gl_Position = gl_ModelViewProjectionMatrix * vec4(gl_Vertex.xy, depth, gl_Vertex.w);\n" +
+ "}");
+ glCompileShader(vshID);
+ if ( glGetShader(vshID, GL_COMPILE_STATUS) == GL_FALSE ) {
+ System.out.println(glGetShaderInfoLog(vshID, glGetShader(vshID, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to compile vertex shader.");
+ }
+
+ createPrograms(vshID);
+
+ depthLoc = glGetAttribLocation(progID, "depth");
+
+ // -----------------
+ }
+
+ public void updateBallSize() {
+ glUseProgram(progIDTF);
+ glUniform1f(ballSizeLoc, ballSize * 0.5f);
+
+ super.updateBallSize();
+ }
+
+ public void updateBalls(final int count) {
+ // Depth data
+
+ final FloatBuffer depths = BufferUtils.createFloatBuffer(count * 2);
+ final float depthStep = 1.9f / count;
+ float depth = Math.nextAfter(1.0f, Float.MIN_VALUE);
+ // Front-to-back
+ for ( int i = 0; i < count; i++ ) {
+ depths.put(depth);
+ depth -= depthStep;
+ }
+ // Back-to-front
+ for ( int i = 0; i < count; i++ )
+ depths.put(depths.get(count - 1 - i));
+ depths.flip();
+
+ if ( depthVBO != 0 )
+ glDeleteBuffers(depthVBO);
+
+ depthVBO = glGenBuffers();
+ glBindBuffer(GL_ARRAY_BUFFER, depthVBO);
+ glBufferData(GL_ARRAY_BUFFER, depths, GL_STATIC_DRAW);
+
+ glEnableVertexAttribArray(depthLoc);
+ glVertexAttribPointer(depthLoc, 1, GL_FLOAT, false, 0, 0);
+
+ // Animation data
+
+ final FloatBuffer transform = BufferUtils.createFloatBuffer(count * 2 * 4);
+ // Front-to-back
+ final Random random = new Random();
+ for ( int i = 0; i < count; i++ ) {
+ transform.put((int)(random.nextFloat() * (SCREEN_WIDTH - ballSize) + ballSize * 0.5f));
+ transform.put((int)(random.nextFloat() * (SCREEN_HEIGHT - ballSize) + ballSize * 0.5f));
+ transform.put(random.nextFloat() * 0.4f - 0.2f);
+ transform.put(random.nextFloat() * 0.4f - 0.2f);
+ }
+ // Back-to-front
+ for ( int i = 0; i < count; i++ ) {
+ final int offset = (count - 1 - i) * 4;
+ transform.put(transform.get(offset + 0));
+ transform.put(transform.get(offset + 1));
+ transform.put(transform.get(offset + 2));
+ transform.put(transform.get(offset + 3));
+ }
+ transform.flip();
+
+ if ( tfVBO[0] != 0 ) {
+ for ( int i = 0; i < tfVBO.length; i++ )
+ glDeleteBuffers(tfVBO[i]);
+ }
+
+ for ( int i = 0; i < tfVBO.length; i++ ) {
+ tfVBO[i] = glGenBuffers();
+ glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, tfVBO[i]);
+ glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER, transform, GL_STATIC_DRAW);
+ }
+
+ glBindBuffer(GL_ARRAY_BUFFER, tfVBO[0]);
+ glVertexPointer(2, GL_FLOAT, (4 * 4), 0);
+ }
+
+ public void render(final boolean render, final boolean animate, final int delta) {
+ if ( animate ) {
+ glDisableVertexAttribArray(depthLoc);
+
+ final int vbo = currVBO;
+ currVBO = 1 - currVBO;
+
+ glUseProgram(progIDTF);
+ glUniform1f(deltaLoc, delta);
+
+ glBindBuffer(GL_ARRAY_BUFFER, tfVBO[vbo]);
+ glVertexPointer(4, GL_FLOAT, 0, 0);
+
+ glEnable(GL_RASTERIZER_DISCARD);
+ if ( GLContext.getCapabilities().OpenGL30 ) {
+ glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, 0, tfVBO[1 - vbo]);
+
+ glBeginTransformFeedback(GL_POINTS);
+ glDrawArrays(GL_POINTS, 0, ballCount * 2);
+ glEndTransformFeedback();
+ } else {
+ glBindBufferBaseEXT(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, 0, tfVBO[1 - vbo]);
+
+ glBeginTransformFeedbackEXT(GL_POINTS);
+ glDrawArrays(GL_POINTS, 0, ballCount * 2);
+ glEndTransformFeedbackEXT();
+ }
+ glDisable(GL_RASTERIZER_DISCARD);
+
+ glUseProgram(progID);
+ glVertexPointer(2, GL_FLOAT, (4 * 4), 0);
+
+ glEnableVertexAttribArray(depthLoc);
+ }
+
+ if ( render ) {
+ // Render front-to-back opaque pass
+ glAlphaFunc(GL_EQUAL, 1.0f);
+ glDisable(GL_BLEND);
+ glDrawArrays(GL_POINTS, 0, ballCount);
+ glEnable(GL_BLEND);
+
+ // Render back-to-front transparent pass
+ glAlphaFunc(GL_GREATER, 0.0f); // Fragments with alpha == 1.0 are early-depth-rejected.
+ glDepthMask(false);
+ glDrawArrays(GL_POINTS, ballCount, ballCount);
+ glDepthMask(true);
+ }
+ }
+
+ }
+
+}
\ No newline at end of file
Added: trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/SpriteShootoutCL.java
===================================================================
--- trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/SpriteShootoutCL.java (rev 0)
+++ trunk/LWJGL/src/java/org/lwjgl/test/opengl/sprites/SpriteShootoutCL.java 2011-04-07 21:36:19 UTC (rev 3513)
@@ -0,0 +1,559 @@
+package org.lwjgl.test.opengl.sprites;
+
+import org.lwjgl.BufferUtils;
+import org.lwjgl.LWJGLException;
+import org.lwjgl.PointerBuffer;
+import org.lwjgl.Sys;
+import org.lwjgl.input.Keyboard;
+import org.lwjgl.input.Mouse;
+import org.lwjgl.opencl.*;
+import org.lwjgl.opencl.api.Filter;
+import org.lwjgl.opengl.Display;
+import org.lwjgl.opengl.DisplayMode;
+import org.lwjgl.opengl.GLContext;
+import org.lwjgl.opengl.Util;
+
+import java.awt.image.BufferedImage;
+import java.awt.image.Raster;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+import java.util.List;
+import java.util.Random;
+import javax.imageio.ImageIO;
+
+import static org.lwjgl.opencl.CL10.*;
+import static org.lwjgl.opencl.CL10GL.*;
+import static org.lwjgl.opengl.GL11.*;
+import static org.lwjgl.opengl.GL12.*;
+import static org.lwjgl.opengl.GL15.*;
+import static org.lwjgl.opengl.GL20.*;
+
+/**
+ * Sprite rendering demo. In this version OpenCL is used for the animation
+ * computations. CL_KHR_gl_sharing is required for sharing the animation
+ * data with OpenGL for rendering.
+ *
+ * @author Spasi
+ * @since 18/3/2011
+ */
+public final class SpriteShootoutCL {
+
+ private static final int SCREEN_WIDTH = 800;
+ private static final int SCREEN_HEIGHT = 600;
+
+ private static final int ANIMATION_TICKS = 60;
+
+ private boolean run = true;
+ private boolean render = true;
+ private boolean colorMask = true;
+ private boolean animate = true;
+ private boolean smooth;
+ private boolean vsync;
+
+ private int ballSize = 42;
+ private int ballCount = 100 * 1000;
+
+ private SpriteRenderer renderer;
+
+ // OpenGL stuff
+ private int texID;
+ private int texBigID;
+ private int texSmallID;
+
+ // OpenCL stuff
+
+ private IntBuffer errorCode = BufferUtils.createIntBuffer(1);
+
+ private CLDevice clDevice;
+ private CLContext clContext;
+ private CLCommandQueue queue;
+ private CLProgram program;
+ private CLKernel kernel;
+ private CLMem clTransform;
+
+ private PointerBuffer kernelGlobalWorkSize;
+
+ private SpriteShootoutCL() {
+ }
+
+ public static void main(String[] args) {
+ try {
+ new SpriteShootoutCL().start();
+ } catch (LWJGLException e) {
+ e.printStackTrace();
+ }
+ }
+
+ private void start() throws LWJGLException {
+ try {
+ initGL();
+ initCL();
+
+ renderer = new SpriteRendererDefault();
+
+ updateBalls(ballCount);
+ run();
+ } catch (Throwable t) {
+ t.printStackTrace();
+ } finally {
+ destroy();
+ }
+ }
+
+ private void initCL() throws LWJGLException {
+ CL.create();
+
+ final List<CLPlatform> platforms = CLPlatform.getPlatforms();
+ if ( platforms == null )
+ throw new RuntimeException("No OpenCL platforms found.");
+
+ final CLPlatform platform = platforms.get(0);
+
+ final PointerBuffer ctxProps = BufferUtils.createPointerBuffer(3);
+ ctxProps.put(CL_CONTEXT_PLATFORM).put(platform.getPointer()).put(0).flip();
+
+ // Find devices with GL sharing support
+ final Filter<CLDevice> glSharingFilter = new Filter<CLDevice>() {
+ public boolean accept(final CLDevice device) {
+ final CLDeviceCapabilities caps = CLCapabilities.getDeviceCapabilities(device);
+ return caps.CL_KHR_gl_sharing;
+ }
+ };
+ final List<CLDevice> devices = platform.getDevices(CL_DEVICE_TYPE_GPU, glSharingFilter);
+
+ if ( devices == null )
+ throw new RuntimeException("No OpenCL GPU device found.");
+
+ clDevice = devices.get(0);
+ // Make sure we use only 1 device
+ devices.clear();
+ devices.add(clDevice);
+
+ clContext = CLContext.create(platform, devices, new CLContextCallback() {
+ protected void handleMessage(final String errinfo, final ByteBuffer private_info) {
+ System.out.println("[CONTEXT MESSAGE] " + errinfo);
+ }
+ }, Display.getDrawable(), errorCode);
+ checkCLError(errorCode);
+
+ queue = clCreateCommandQueue(clContext, clDevice, 0, errorCode);
+ checkCLError(errorCode);
+ }
+
+ private void initGL() throws LWJGLException {
+ Display.setLocation((Display.getDisplayMode().getWidth() - SCREEN_WIDTH) / 2,
+ (Display.getDisplayMode().getHeight() - SCREEN_HEIGHT) / 2);
+ Display.setDisplayMode(new DisplayMode(SCREEN_WIDTH, SCREEN_HEIGHT));
+ Display.setTitle("Sprite Shootout - CL");
+ Display.create();
+
+ if ( !GLContext.getCapabilities().OpenGL20 )
+ throw new RuntimeException("OpenGL 2.0 is required for this demo.");
+
+ // Setup viewport
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(0, SCREEN_WIDTH, 0, SCREEN_HEIGHT, -1.0, 1.0);
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
+
+ glClearColor(1.0f, 1.0f, 1.0f, 0.0f);
+
+ // Create textures
+
+ try {
+ texSmallID = createTexture("res/ball_sm.png");
+ texBigID = createTexture("res/ball.png");
+ } catch (IOException e) {
+ e.printStackTrace();
+ System.exit(-1);
+ }
+ texID = texBigID;
+
+ // Setup rendering state
+
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+
+ glEnable(GL_ALPHA_TEST);
+ glAlphaFunc(GL_GREATER, 0.0f);
+
+ glColorMask(colorMask, colorMask, colorMask, false);
+ glDepthMask(false);
+ glDisable(GL_DEPTH_TEST);
+
+ // Setup geometry
+
+ Util.checkGLError();
+ }
+
+ private static int createTexture(final String path) throws IOException {
+ final BufferedImage img = ImageIO.read(SpriteShootoutCL.class.getClassLoader().getResource(path));
+
+ final int w = img.getWidth();
+ final int h = img.getHeight();
+
+ final ByteBuffer buffer = readImage(img);
+
+ final int texID = glGenTextures();
+
+ glBindTexture(GL_TEXTURE_2D, texID);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_BGRA, GL_UNSIGNED_BYTE, buffer);
+
+ return texID;
+ }
+
+ private static ByteBuffer readImage(final BufferedImage img) throws IOException {
+ final Raster raster = img.getRaster();
+
+ final int bands = raster.getNumBands();
+
+ final int w = img.getWidth();
+ final int h = img.getHeight();
+
+ final int size = w * h * bands;
+
+ final byte[] pixels = new byte[size];
+ raster.getDataElements(0, 0, w, h, pixels);
+
+ final ByteBuffer pbuffer = BufferUtils.createByteBuffer(size);
+
+ if ( bands == 4 ) {
+ for ( int i = 0; i < (w * h * 4); i += 4 ) {
+ // Pre-multiply alpha
+ final float a = unpackUByte01(pixels[i + 3]);
+ pbuffer.put(packUByte01(unpackUByte01(pixels[i + 2]) * a));
+ pbuffer.put(packUByte01(unpackUByte01(pixels[i + 1]) * a));
+ pbuffer.put(packUByte01(unpackUByte01(pixels[i + 0]) * a));
+ pbuffer.put(pixels[i + 3]);
+ }
+ } else if ( bands == 3 ) {
+ for ( int i = 0; i < (w * h * 3); i += 3 ) {
+ pbuffer.put(pixels[i + 2]);
+ pbuffer.put(pixels[i + 1]);
+ pbuffer.put(pixels[i + 0]);
+ }
+ } else
+ pbuffer.put(pixels, 0, size);
+
+ pbuffer.flip();
+
+ return pbuffer;
+ }
+
+ private static float unpackUByte01(final byte x) {
+ return (x & 0xFF) / 255.0f;
+ }
+
+ private static byte packUByte01(final float x) {
+ return (byte)(x * 255.0f);
+ }
+
+ private void updateBalls(final int count) {
+ System.out.println("NUMBER OF BALLS: " + count);
+ renderer.updateBalls(ballCount);
+ }
+
+ private void run() {
+ long startTime = System.currentTimeMillis() + 5000;
+ long fps = 0;
+
+ long time = Sys.getTime();
+ final int ticksPerUpdate = (int)(Sys.getTimerResolution() / ANIMATION_TICKS);
+
+ renderer.render(false, true, 0);
+
+ while ( run ) {
+ Display.processMessages();
+ handleInput();
+
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ final long currTime = Sys.getTime();
+ final int delta = (int)(currTime - time);
+ if ( smooth || delta >= ticksPerUpdate ) {
+ renderer.render(render, animate, delta);
+ time = currTime;
+ } else
+ renderer.render(render, false, 0);
+
+ Display.update(false);
+
+ if ( startTime > System.currentTimeMillis() ) {
+ fps++;
+ } else {
+ long timeUsed = 5000 + (startTime - System.currentTimeMillis());
+ startTime = System.currentTimeMillis() + 5000;
+ System.out.println("FPS: " + (Math.round(fps / (timeUsed / 1000.0) * 10) / 10.0) + ", Balls: " + ballCount);
+ fps = 0;
+ }
+ }
+ }
+
+ private void handleInput() {
+ if ( Display.isCloseRequested() )
+ run = false;
+
+ while ( Keyboard.next() ) {
+ if ( Keyboard.getEventKeyState() )
+ continue;
+
+ switch ( Keyboard.getEventKey() ) {
+ case Keyboard.KEY_1:
+ case Keyboard.KEY_2:
+ case Keyboard.KEY_3:
+ case Keyboard.KEY_4:
+ case Keyboard.KEY_5:
+ case Keyboard.KEY_6:
+ case Keyboard.KEY_7:
+ case Keyboard.KEY_8:
+ case Keyboard.KEY_9:
+ case Keyboard.KEY_0:
+ ballCount = 1 << (Keyboard.getEventKey() - Keyboard.KEY_1);
+ updateBalls(ballCount);
+ break;
+ case Keyboard.KEY_ADD:
+ case Keyboard.KEY_SUBTRACT:
+ int mult;
+ if ( Keyboard.isKeyDown(Keyboard.KEY_LSHIFT) || Keyboard.isKeyDown(Keyboard.KEY_RSHIFT) )
+ mult = 1000;
+ else if ( Keyboard.isKeyDown(Keyboard.KEY_LMENU) || Keyboard.isKeyDown(Keyboard.KEY_RMENU) )
+ mult = 100;
+ else if ( Keyboard.isKeyDown(Keyboard.KEY_LCONTROL) || Keyboard.isKeyDown(Keyboard.KEY_RCONTROL) )
+ mult = 10;
+ else
+ mult = 1;
+ if ( Keyboard.getEventKey() == Keyboard.KEY_SUBTRACT )
+ mult = -mult;
+ ballCount += mult * 100;
+ if ( ballCount <= 0 )
+ ballCount = 1;
+ updateBalls(ballCount);
+ break;
+ case Keyboard.KEY_ESCAPE:
+ run = false;
+ break;
+ case Keyboard.KEY_A:
+ animate = !animate;
+ System.out.println("Animation is now " + (animate ? "on" : "off") + ".");
+ break;
+ case Keyboard.KEY_C:
+ colorMask = !colorMask;
+ glColorMask(colorMask, colorMask, colorMask, false);
+ System.out.println("Color mask is now " + (colorMask ? "on" : "off") + ".");
+ // Disable alpha test when color mask is off, else we get no benefit.
+ if ( colorMask ) {
+ glEnable(GL_BLEND);
+ glEnable(GL_ALPHA_TEST);
+ } else {
+ glDisable(GL_BLEND);
+ glDisable(GL_ALPHA_TEST);
+ }
+ break;
+ case Keyboard.KEY_R:
+ render = !render;
+ System.out.println("Rendering is now " + (render ? "on" : "off") + ".");
+ break;
+ case Keyboard.KEY_S:
+ smooth = !smooth;
+ System.out.println("Smooth animation is now " + (smooth ? "on" : "off") + ".");
+ break;
+ case Keyboard.KEY_T:
+ if ( texID == texBigID ) {
+ texID = texSmallID;
+ ballSize = 16;
+ } else {
+ texID = texBigID;
+ ballSize = 42;
+ }
+ renderer.updateBallSize();
+ glBindTexture(GL_TEXTURE_2D, texID);
+ System.out.println("Now using the " + (texID == texBigID ? "big" : "small") + " texture.");
+ break;
+ case Keyboard.KEY_V:
+ vsync = !vsync;
+ Display.setVSyncEnabled(vsync);
+ System.out.println("VSYNC is now " + (vsync ? "enabled" : "disabled") + ".");
+ break;
+ }
+ }
+
+ while ( Mouse.next() ) ;
+ }
+
+ private static void checkCLError(IntBuffer buffer) {
+ org.lwjgl.opencl.Util.checkCLError(buffer.get(0));
+ }
+
+ private void destroy() {
+ clReleaseContext(clContext);
+ Display.destroy();
+ System.exit(0);
+ }
+
+ private abstract class SpriteRenderer {
+
+ protected int progID;
+ protected int animVBO;
+
+ protected void createKernel(final String source) {
+ program = clCreateProgramWithSource(clContext, source, errorCode);
+ checkCLError(errorCode);
+ final int build = clBuildProgram(program, clDevice, "", null);
+ if ( build != CL_SUCCESS ) {
+ System.out.println("BUILD LOG: " + program.getBuildInfoString(clDevice, CL_PROGRAM_BUILD_LOG));
+ throw new RuntimeException("Failed to build CL program, status: " + build);
+ }
+
+ kernel = clCreateKernel(program, "animate", errorCode);
+ checkCLError(errorCode);
+
+ kernelGlobalWorkSize = BufferUtils.createPointerBuffer(1);
+ kernelGlobalWorkSize.put(0, ballCount);
+
+ kernel.setArg(0, SCREEN_WIDTH);
+ kernel.setArg(1, SCREEN_HEIGHT);
+ kernel.setArg(2, ballSize * 0.5f);
+ }
+
+ protected void createProgram(final int vshID) {
+ final int fshID = glCreateShader(GL_FRAGMENT_SHADER);
+ glShaderSource(fshID, "#version 110\n" +
+ "uniform sampler2D COLOR_MAP;" +
+ "void main(void) {\n" +
+ " gl_FragColor = texture2D(COLOR_MAP, gl_PointCoord);\n" +
+ "}");
+ glCompileShader(fshID);
+ if ( glGetShader(fshID, GL_COMPILE_STATUS) == GL_FALSE ) {
+ System.out.println(glGetShaderInfoLog(fshID, glGetShader(fshID, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to compile fragment shader.");
+ }
+
+ progID = glCreateProgram();
+ glAttachShader(progID, vshID);
+ glAttachShader(progID, fshID);
+ glLinkProgram(progID);
+ if ( glGetProgram(progID, GL_LINK_STATUS) == GL_FALSE ) {
+ System.out.println(glGetProgramInfoLog(progID, glGetProgram(progID, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to link shader program.");
+ }
+
+ glUseProgram(progID);
+ glUniform1i(glGetUniformLocation(progID, "COLOR_MAP"), 0);
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+ }
+
+ public void updateBallSize() {
+ glPointSize(ballSize);
+ kernel.setArg(2, ballSize * 0.5f);
+ }
+
+ public void updateBalls(final int count) {
+ kernelGlobalWorkSize.put(0, ballCount);
+
+ final FloatBuffer transform = BufferUtils.createFloatBuffer(count * 4);
+
+ final Random random = new Random();
+ for ( int i = 0; i < count; i++ ) {
+ transform.put((int)(random.nextFloat() * (SCREEN_WIDTH - ballSize)) + ballSize * 0.5f);
+ transform.put((int)(random.nextFloat() * (SCREEN_HEIGHT - ballSize)) + ballSize * 0.5f);
+ transform.put(random.nextFloat() * 0.4f - 0.2f);
+ 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 ( glGetShader(vshID, GL_COMPILE_STATUS) == GL_FALSE ) {
+ System.out.println(glGetShaderInfoLog(vshID, glGetShader(vshID, GL_INFO_LOG_LENGTH)));
+ throw new RuntimeException("Failed to compile vertex shader.");
+ }
+
+ createProgram(vshID);
+
+ 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();
+ }
+
+ publ...
[truncated message content] |
