From 820231dafec032e70f3aaf7f01cf11ff4839e3cc Mon Sep 17 00:00:00 2001 From: Sven Gothel Date: Thu, 1 Sep 2011 02:53:59 +0200 Subject: Test ElektronenMultiplizierer: Add original author information, split GLEventListener/Test, .. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add original author/artist information: Dominik Ströhlein (DemoscenePassivist) Split GLEventListener/Test code Add key right/left for frame +/- 120 (fwd/bwd in time) Proper header doc formate Minor cleanup --- .../jogl/demos/es2/ElektronenMultiplizierer.java | 251 +++++++++++---------- .../es2/newt/TestElektronenMultipliziererNEWT.java | 160 +++++++++++++ .../shader/elektronenmultiplizierer_development.fp | 217 +++++++----------- .../es2/shader/elektronenmultiplizierer_port.fp | 52 +---- 4 files changed, 373 insertions(+), 307 deletions(-) create mode 100644 src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/newt/TestElektronenMultipliziererNEWT.java (limited to 'src/test') diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/ElektronenMultiplizierer.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/ElektronenMultiplizierer.java index 2de0fb81f..0e43a71b1 100644 --- a/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/ElektronenMultiplizierer.java +++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/ElektronenMultiplizierer.java @@ -26,69 +26,98 @@ * or implied, of JogAmp Community. */ - package com.jogamp.opengl.test.junit.jogl.demos.es2; -import java.nio.*; +import static javax.media.opengl.GL.*; + +import java.nio.FloatBuffer; -import javax.media.opengl.*; -import javax.media.opengl.glu.*; +import javax.media.opengl.GL; +import javax.media.opengl.GL2ES2; +import javax.media.opengl.GLAutoDrawable; +import javax.media.opengl.GLCapabilities; +import javax.media.opengl.GLCapabilitiesImmutable; +import javax.media.opengl.GLEventListener; +import javax.media.opengl.GLProfile; +import javax.media.opengl.GLUniformData; -import com.jogamp.common.nio.*; -import com.jogamp.newt.opengl.*; -import com.jogamp.opengl.util.*; +import com.jogamp.common.nio.Buffers; +import com.jogamp.opengl.util.GLArrayDataServer; +import com.jogamp.opengl.util.PMVMatrix; import com.jogamp.opengl.util.glsl.ShaderCode; import com.jogamp.opengl.util.glsl.ShaderProgram; import com.jogamp.opengl.util.glsl.ShaderState; -import static javax.media.opengl.GL2ES2.*; - /** - ** __ __|_ ___________________________________________________________________________ ___|__ __ - ** // /\ _ /\ \\ - ** //____/ \__ __ _____ _____ _____ _____ _____ | | __ _____ _____ __ __/ \____\\ - ** \ \ / / __| | | __| _ | | _ | | | __| | | __| | /\ \ / / - ** \____\/_/ | | | | | | | | | | | __| | | | | | | | | | |__ " \_\/____/ - ** /\ \ |_____|_____|_____|__|__|_|_|_|__| | | |_____|_____|_____|_____| _ / /\ - ** / \____\ http://jogamp.org |_| /____/ \ - ** \ / "' _________________________________________________________________________ `" \ / - ** \/____. .____\/ - ** - ** JOGL2 port of my PC 4k intro competition entry for Revision 2011. Sure it got a little bigger - ** while porting but the shader and control code remained more or less untouched. The intro renders - ** a fullscreen billboard using a single fragment shader. The shader encapsulates basically two - ** different routines: A sphere-tracing based raymarcher for a single fractal formula and a bitmap - ** orbit trap julia+mandelbrot fractal renderer. Additionally an inline-processing analog-distortion - ** filter is applied to all rendered fragments to make the overall look more interesting. - ** - ** The different intro parts are all parameter variations of the two routines in the fragment shader - ** synched to the music: Parts 3+5 are obviously the mandelbrot and julia bitmap orbit traps, and parts - ** 1,2,4 and 6 are pure fractal sphere tracing. - ** - ** During the development of the intro it turned out that perfectly raymarching every pixel of the orbit - ** trapped julia+mandelbrot fractal was way to slow even on highend hardware. So I inserted a lowres - ** intermediate FBO to be used by the bitmap based orbit trap routine wich was ofcourse way faster, but - ** had the obvious upscaling artefacts. Maybe I'll produce a perfect quality version for very patient - ** people with insane hardware :) - ** - ** Papers and articles you should be familiar with before trying to understand the code: - ** - ** Distance rendering for fractals: http://www.iquilezles.org/www/articles/distancefractals/distancefractals.htm - ** Geometric orbit traps: http://www.iquilezles.org/www/articles/ftrapsgeometric/ftrapsgeometric.htm - ** Bitmap orbit traps: http://www.iquilezles.org/www/articles/ftrapsbitmap/ftrapsbitmap.htm - ** Ambient occlusion techniques: http://www.iquilezles.org/www/articles/ao/ao.htm - ** Sphere tracing: A geometric method for the antialiased ray tracing of implicit surfaces: http://graphics.cs.uiuc.edu/~jch/papers/zeno.pdf - ** Rendering fractals with distance estimation function: http://www.iquilezles.org/www/articles/mandelbulb/mandelbulb.htm - ** - ** For an impression how this routine looks like see here: http://www.youtube.com/watch?v=lvC8maVHh8Q - ** Original release from the Revision can be found here: http://www.pouet.net/prod.php?which=56860 - **/ + * 
+ *   __ __|_  ___________________________________________________________________________  ___|__ __
+ *  //    /\                                           _                                  /\    \\  
+ * //____/  \__     __ _____ _____ _____ _____ _____  | |     __ _____ _____ __        __/  \____\\ 
+ *  \    \  / /  __|  |     |   __|  _  |     |  _  | | |  __|  |     |   __|  |      /\ \  /    /  
+ *   \____\/_/  |  |  |  |  |  |  |     | | | |   __| | | |  |  |  |  |  |  |  |__   "  \_\/____/   
+ *  /\    \     |_____|_____|_____|__|__|_|_|_|__|    | | |_____|_____|_____|_____|  _  /    /\     
+ * /  \____\                       http://jogamp.org  |_|                              /____/  \    
+ * \  /   "' _________________________________________________________________________ `"   \  /    
+ *  \/____.                                                                             .____\/
+ *
+ * + *

+ * JOGL2 port of my PC 4k intro competition entry for Revision 2011. Sure it got a little bigger + * while porting but the shader and control code remained more or less untouched. The intro renders + * a fullscreen billboard using a single fragment shader. The shader encapsulates basically two + * different routines: A sphere-tracing based raymarcher for a single fractal formula and a bitmap + * orbit trap julia+mandelbrot fractal renderer. Additionally an inline-processing analog-distortion + * filter is applied to all rendered fragments to make the overall look more interesting. + *

+ * + *

+ * The different intro parts are all parameter variations of the two routines in the fragment shader + * synched to the music: Parts 3+5 are obviously the mandelbrot and julia bitmap orbit traps, and parts + * 1,2,4 and 6 are pure fractal sphere tracing. + *

+ * + *

+ * During the development of the intro it turned out that perfectly raymarching every pixel of the orbit + * trapped julia+mandelbrot fractal was way to slow even on highend hardware. So I inserted a lowres + * intermediate FBO to be used by the bitmap based orbit trap routine wich was ofcourse way faster, but + * had the obvious upscaling artefacts. Maybe I'll produce a perfect quality version for very patient + * people with insane hardware :) + *

+ * + *

+ * Papers and articles you should be familiar with before trying to understand the code: + *

+ * + *

+ *

+ *

+ * + *

+ *

+ *

+ * + *

+ * http://www.youtube.com/user/DemoscenePassivist + *

+ * + * @author Dominik Ströhlein (DemoscenePassivist) + */ public class ElektronenMultiplizierer implements GLEventListener { //BEGIN --- BaseGlobalEnvironment replacement --- private final GLCapabilities mCaps; - private final GLU mGlu; + // private final GLU mGlu; private String mCommandLineParameter_BaseRoutineClassName; private boolean mCommandLineParameter_MultiSampling; @@ -101,11 +130,9 @@ public class ElektronenMultiplizierer implements GLEventListener { private int mFrameCounter; private int mCommandLineParameter_FrameRate; private long mFrameSkipAverageFramerateTimeStart; - private boolean mFrameSkipAverageFrameStartTimeInitialized; private long mFrameSkipAverageFramerateTimeEnd; - private double mFrameCounterDifference; - private double mFrameCounterTargetValue; - private int mSkippedFramesCounter; + private boolean mFrameSkipManual; + // private int mSkippedFramesCounter; // private BaseMusic mBaseMusic; boolean mMusicSyncStartTimeInitialized = false; @@ -114,7 +141,7 @@ public class ElektronenMultiplizierer implements GLEventListener { private GLUniformData pmvMatrixUniform; private GLUniformData mScreenDimensionUniform; private GLArrayDataServer vertices0; - private GLArrayDataServer texCoords0; + // private GLArrayDataServer texCoords0; public String getBaseRoutineClassName() { return mCommandLineParameter_BaseRoutineClassName; } public boolean preferMultiSampling() { return mCommandLineParameter_MultiSampling; } @@ -133,9 +160,9 @@ public class ElektronenMultiplizierer implements GLEventListener { boolean inAnisotropicFiltering, float inAnisotropyLevel, boolean inFrameCapture, - boolean inFrameSkip, int desiredFrameRate + boolean inFrameSkip, int desiredFrameRate, int startFrame ) { - mGlu = new GLU(); + // mGlu = new GLU(); mCommandLineParameter_BaseRoutineClassName = inBaseRoutineClassName; mCommandLineParameter_MultiSampling = inMultiSampling; mCommandLineParameter_NumberOfSampleBuffers = (inNumberOfSampleBuffers==-1) ? 2 : inNumberOfSampleBuffers; @@ -156,6 +183,20 @@ public class ElektronenMultiplizierer implements GLEventListener { // turns out we need to have alpha, otherwise no AA will be visible mCaps.setAlphaBits(1); } + + mFrameSkipAverageFramerateTimeStart = 0; + mFrameCounter = 0; + skipFrames(startFrame); + } + + /** + * skip frames by turning back start time + * @param frames positive or negative values + */ + public void skipFrames(int frames) { + final long dft = 1000000000/mCommandLineParameter_FrameRate; + mFrameSkipAverageFramerateTimeStart -= frames * dft ; + mFrameSkipManual = true; } public GLCapabilitiesImmutable getGLCapabilities() { @@ -165,14 +206,13 @@ public class ElektronenMultiplizierer implements GLEventListener { public void init(GLAutoDrawable drawable) { GL2ES2 gl = drawable.getGL().getGL2ES2(); gl.setSwapInterval(1); - mFrameCounter = 0; st = new ShaderState(); final ShaderCode vp0 = ShaderCode.create(gl, GL2ES2.GL_VERTEX_SHADER, 1, this.getClass(), "shader", "shader/bin", "default"); final ShaderCode fp0 = ShaderCode.create(gl, GL2ES2.GL_FRAGMENT_SHADER, 1, this.getClass(), - // "shader", "shader/bin", "elektronenmultiplizierer_development"); - "shader", "shader/bin", "elektronenmultiplizierer_port"); + "shader", "shader/bin", "elektronenmultiplizierer_development"); + // "shader", "shader/bin", "elektronenmultiplizierer_port"); final ShaderProgram sp0 = new ShaderProgram(); sp0.add(gl, vp0, System.err); sp0.add(gl, fp0, System.err); @@ -203,6 +243,7 @@ public class ElektronenMultiplizierer implements GLEventListener { st.ownAttribute(vertices0, true); vertices0.enableBuffer(gl, false); + /** texCoords0 = GLArrayDataServer.createGLSL("gca_TexCoords", 2, GL.GL_FLOAT, false, 4, GL.GL_STATIC_DRAW); texCoords0.putf(0f); texCoords0.putf(1f); texCoords0.putf(1f); texCoords0.putf(1f); @@ -210,7 +251,7 @@ public class ElektronenMultiplizierer implements GLEventListener { texCoords0.putf(1f); texCoords0.putf(0f); texCoords0.seal(gl, true); st.ownAttribute(texCoords0, true); - texCoords0.enableBuffer(gl, false); + texCoords0.enableBuffer(gl, false); */ //generate framebufferobject int[] result = new int[1]; @@ -239,22 +280,38 @@ public class ElektronenMultiplizierer implements GLEventListener { gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f); + // if NO music is used sync to mainloop start ... + // (add up current time due to possible turned back start time by skip frames) + mFrameSkipAverageFramerateTimeStart += System.nanoTime(); + // mBaseMusic = new BaseMusic(BaseGlobalEnvironment.getInstance().getMusicFileName()); // mBaseMusic.init(); // mBaseMusic.play(); } public void display(GLAutoDrawable drawable) { + if (wantsFrameSkip()) { + mFrameSkipAverageFramerateTimeEnd = System.nanoTime(); + double tDesiredFrameRate = (float)getDesiredFramerate(); + double tSingleFrameTime = 1000000000.0f/tDesiredFrameRate; + double tElapsedTime = mFrameSkipAverageFramerateTimeEnd - mFrameSkipAverageFramerateTimeStart; + double mFrameCounterTargetValue = tElapsedTime/tSingleFrameTime; + double mFrameCounterDifference = mFrameCounterTargetValue-mFrameCounter; + if (mFrameSkipManual || mFrameCounterDifference>2) { + mFrameCounter+=mFrameCounterDifference; + // mSkippedFramesCounter+=mFrameCounterDifference; + } else if (mFrameCounterDifference<-2) { + //hold framecounter advance ... + mFrameCounter--; + } + mFrameSkipManual = false; + } + GL2ES2 gl = drawable.getGL().getGL2ES2(); final int XRES = drawable.getWidth(); final int YRES = drawable.getHeight(); - //if NO music is used sync to mainloop start ... - if (!mFrameSkipAverageFrameStartTimeInitialized) { - mFrameSkipAverageFrameStartTimeInitialized = true; - mFrameSkipAverageFramerateTimeStart = System.nanoTime(); - } // if (!getBaseMusic().isOffline()) { // //if music IS used sync to first second of music ... // if (BaseRoutineRuntime.getInstance().getBaseMusic().getPositionInMilliseconds()>0 && !mMusicSyncStartTimeInitialized) { @@ -267,7 +324,7 @@ public class ElektronenMultiplizierer implements GLEventListener { // mBaseMusic.synchonizeMusic(); //use this for offline rendering/capture ... - int MMTime_u_ms = (int)((((double)mFrameCounter)*44100.0f)/60.0f); + int MMTime_u_ms = (int)((((float)mFrameCounter)*44100.0f)/60.0f); //use this for music synched rendering ... //int MMTime_u_ms = (int)(BaseRoutineRuntime.getInstance().getBaseMusic().getPositionInMilliseconds()*(44100.0f/1000.0f)); //dedicated sync variable for each event ... kinda lame but who cares X-) @@ -280,14 +337,14 @@ public class ElektronenMultiplizierer implements GLEventListener { if (MMTime_u_ms>=4438408 && !mSyncEvent_07) { mSyncEvent_07 = true; handleSyncEvent(MMTime_u_ms); } if (MMTime_u_ms>=5482831 && !mSyncEvent_08) { mSyncEvent_08 = true; handleSyncEvent(MMTime_u_ms); } //calculate current time based on 60fps reference framerate ... - MMTime_u_ms = (int)((((double)mFrameCounter)*44100.0)/60.0); + MMTime_u_ms = (int)((((float)mFrameCounter)*44100.0f)/60.0f); gl.glDisable(GL_CULL_FACE); gl.glDisable(GL_DEPTH_TEST); st.useProgram(gl, true); vertices0.enableBuffer(gl, true); - texCoords0.enableBuffer(gl, true); + // texCoords0.enableBuffer(gl, true); pmvMatrix.glMatrixMode(PMVMatrix.GL_PROJECTION); pmvMatrix.glLoadIdentity(); @@ -378,27 +435,11 @@ public class ElektronenMultiplizierer implements GLEventListener { gl.glDrawArrays(GL.GL_TRIANGLE_STRIP, 0, 4); vertices0.enableBuffer(gl, false); - texCoords0.enableBuffer(gl, false); + // texCoords0.enableBuffer(gl, false); st.useProgram(gl, false); //--- mFrameCounter++; - if (wantsFrameSkip()) { - mFrameSkipAverageFramerateTimeEnd = System.nanoTime(); - double tDesiredFrameRate = (float)getDesiredFramerate(); - double tSingleFrameTime = 1000000000.0f/tDesiredFrameRate; - double tElapsedTime = mFrameSkipAverageFramerateTimeEnd - mFrameSkipAverageFramerateTimeStart; - mFrameCounterTargetValue = tElapsedTime/tSingleFrameTime; - mFrameCounterDifference = mFrameCounterTargetValue-mFrameCounter; - if (mFrameCounterDifference>2) { - mFrameCounter+=mFrameCounterDifference; - mSkippedFramesCounter+=mFrameCounterDifference; - } else if (mFrameCounterDifference<-2) { - //hold framecounter advance ... - mFrameCounter--; - } - } - } public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { @@ -466,45 +507,5 @@ public class ElektronenMultiplizierer implements GLEventListener { mEffectSyncTime = inMMTime_u_ms; } } - - -//BEGIN --- main entry point --- - - public static void main(String args[]) throws Exception { - String tRoutineClassName = null; - boolean tMultiSampling = false; - int tNumberOfSampleBuffers = -1; - boolean tAnisotropicFiltering = false; - float tAnisotropyLevel = -1.0f; - boolean tFrameCapture = false; - boolean tFrameSkip = true; - int desiredFrameRate = 30; - - final ElektronenMultiplizierer demo = new ElektronenMultiplizierer( - tRoutineClassName, - tMultiSampling,tNumberOfSampleBuffers, - tAnisotropicFiltering,tAnisotropyLevel, - tFrameCapture, - tFrameSkip, desiredFrameRate - ); - GLCapabilitiesImmutable caps = demo.getGLCapabilities(); - - GLWindow glWindow = GLWindow.create(caps); - glWindow.setSize(640, 480); - glWindow.setTitle("Jogamp.org - ElektronenMultiplizierer - GL2ES2/NEWT"); - glWindow.addGLEventListener(demo); - final Animator animator = new Animator(glWindow); - animator.setUpdateFPSFrames(60, System.err); - glWindow.addWindowListener(new com.jogamp.newt.event.WindowAdapter() { - public void windowDestroyNotify(com.jogamp.newt.event.WindowEvent e) { - animator.stop(); - System.exit(0); - } - }); - glWindow.setVisible(true); - animator.start(); - } - -//END --- main entry point --- } diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/newt/TestElektronenMultipliziererNEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/newt/TestElektronenMultipliziererNEWT.java new file mode 100644 index 000000000..26917107d --- /dev/null +++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/newt/TestElektronenMultipliziererNEWT.java @@ -0,0 +1,160 @@ +/** + * Copyright 2011 JogAmp Community. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are + * permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this list of + * conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, this list + * of conditions and the following disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * The views and conclusions contained in the software and documentation are those of the + * authors and should not be interpreted as representing official policies, either expressed + * or implied, of JogAmp Community. + */ + +package com.jogamp.opengl.test.junit.jogl.demos.es2.newt; + +import com.jogamp.newt.event.KeyAdapter; +import com.jogamp.newt.event.KeyEvent; +import com.jogamp.newt.event.TraceWindowAdapter; +import com.jogamp.newt.opengl.GLWindow; +import com.jogamp.opengl.test.junit.util.UITestCase; +import com.jogamp.opengl.test.junit.util.QuitAdapter; + +import com.jogamp.opengl.util.Animator; + +import com.jogamp.opengl.test.junit.jogl.demos.es2.ElektronenMultiplizierer; + +import javax.media.opengl.GLCapabilitiesImmutable; +import javax.media.opengl.GLProfile; + +import org.junit.Assert; +import org.junit.BeforeClass; +import org.junit.AfterClass; +import org.junit.Test; + +/** + * @see com.jogamp.opengl.test.junit.jogl.demos.es2.ElektronenMultiplizierer + * @author Dominik Ströhlein (DemoscenePassivist), et.al. + */ +public class TestElektronenMultipliziererNEWT extends UITestCase { + static final int width = 640, height = 480; + + static final String tRoutineClassName = null; + static final boolean tMultiSampling = false; + static final int tNumberOfSampleBuffers = -1; + static final boolean tAnisotropicFiltering = false; + static final float tAnisotropyLevel = -1.0f; + static final boolean tFrameCapture = false; + static final boolean tFrameSkip = true; + static final int desiredFrameRate = 30; + static int startFrame = 1700; + static long duration = 5000; // ms + + @BeforeClass + public static void initClass() { + GLProfile.initSingleton(true); + } + + @AfterClass + public static void releaseClass() { + } + + protected void run() throws InterruptedException { + final ElektronenMultiplizierer demo = new ElektronenMultiplizierer( + tRoutineClassName, + tMultiSampling,tNumberOfSampleBuffers, + tAnisotropicFiltering,tAnisotropyLevel, + tFrameCapture, + tFrameSkip, desiredFrameRate, startFrame + ); + GLCapabilitiesImmutable caps = demo.getGLCapabilities(); + + GLWindow glWindow = GLWindow.create(caps); + Assert.assertNotNull(glWindow); + glWindow.setSize(width, height); + glWindow.setTitle("ElektronenMultiplizierer (GL2ES2/NEWT)"); + glWindow.addGLEventListener(demo); + + Animator animator = new Animator(glWindow); + animator.setUpdateFPSFrames(60, System.err); + QuitAdapter quitAdapter = new QuitAdapter(); + + //glWindow.addKeyListener(new TraceKeyAdapter(quitAdapter)); + glWindow.addWindowListener(new TraceWindowAdapter(quitAdapter)); + glWindow.addKeyListener(quitAdapter); + glWindow.addWindowListener(quitAdapter); + + final GLWindow f_glWindow = glWindow; + glWindow.addKeyListener(new KeyAdapter() { + public void keyTyped(KeyEvent e) { + if(e.getKeyChar()=='f') { + new Thread() { + public void run() { + f_glWindow.setFullscreen(!f_glWindow.isFullscreen()); + } }.start(); + } else if(e.getKeyChar()=='d') { + new Thread() { + public void run() { + f_glWindow.setUndecorated(!f_glWindow.isUndecorated()); + } }.start(); + } + } + public void keyPressed(KeyEvent e) { + if(KeyEvent.VK_RIGHT == e.getKeyCode()) { + demo.skipFrames(120); + System.err.println("->"); + } else if(KeyEvent.VK_LEFT == e.getKeyCode()) { + demo.skipFrames(-120); + System.err.println("<-"); + } + } + }); + + glWindow.setVisible(true); + animator.start(); + + while(!quitAdapter.shouldQuit() && animator.isAnimating() && animator.getTotalFPSDuration()