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POrequestRender doesn't seem to render (opengl-es android)
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  1. POrequestRender doesn't seem to render (opengl-es android)
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    copied!<p>I have a gameloop running in a thread, my problem is that the </p> <pre><code>mGLSurfaceView.requestRender(); </code></pre> <p>crashes with a null pointer exception. I have a log tag in my onSurfaceCreated method which proves that the surface is created (at least I think) so that's not the problem.</p> <p>I'm thinking that the problem is that requestRender needs a non-static reference. When I tried calling a non-static reference to another method it crashed on that line instead. So I can only assume that threads aren't too friendly with non-statics. I also can't make a static reference to requestRender (which would be an obvious solution).</p> <p>Here is my game loop thread</p> <pre><code>import android.util.Log; public class GameLoop extends Thread { private MyGLSurfaceView myGLSurfaceView; private final static int maxFPS = 30; private final static int maxFrameSkips = 5; private final static int framePeriod = 1000 / maxFPS; public static boolean running; public final static String TAG = "input"; @Override public void run() { running = LaunchActivity.getRunning(); long beginTime; long timeDiff; int sleepTime; int framesSkipped; sleepTime = 0; while (running) { running = LaunchActivity.getRunning(); Log.d(TAG, "gameRunning"); beginTime = System.currentTimeMillis(); framesSkipped = 0; // notice the static reference here GameLogic.update(); Log.d(TAG, "updated"); // not static here myGLSurfaceView.requestRender(); Log.d(TAG, "rendered"); timeDiff = System.currentTimeMillis() - beginTime; sleepTime = (int)(framePeriod - timeDiff); if (sleepTime &gt; 0) { try{ Thread.sleep(sleepTime); Log.d(TAG, "sleeping" + String.valueOf(sleepTime)); }catch(InterruptedException e){} } while(sleepTime &lt; 0 &amp;&amp; framesSkipped &lt; maxFrameSkips){ GameLogic.update(); sleepTime += framePeriod; framesSkipped++; Log.d(TAG, "Frames Skipped"); } } } } </code></pre> <p>And here is my surface created method (which I though could be part of the problem at a long shot)</p> <pre><code>@Override public void onSurfaceCreated(GL10 gl, EGLConfig config) { gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f); gl.glShadeModel(GL10.GL_SMOOTH); gl.glClearDepthf(1.0f); gl.glEnable(GL10.GL_DEPTH_TEST); gl.glDepthFunc(GL10.GL_LEQUAL); gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_NICEST); Log.d(TAG, "SurfaceCreated"); } </code></pre> <p>Oh and by the way i'm using</p> <pre><code>glOrthof </code></pre> <p>projection </p> <p>StackTrace</p> <pre><code>10-05 20:26:44.694: ERROR/AndroidRuntime(18276): FATAL EXCEPTION: Thread-11 10-05 20:26:44.694: ERROR/AndroidRuntime(18276): java.lang.NullPointerException 10-05 20:26:44.694: ERROR/AndroidRuntime(18276): at basicmelon.games.androidgamething.GameLoop.run(GameLoop.java:33) 10-05 20:26:44.694: ERROR/AndroidRuntime(18276): at java.lang.Thread.run(Thread.java:1096) </code></pre> <p>Log TAG</p> <pre><code>10-05 20:28:23.077: DEBUG/input(18923): GLSurfaceViewed 10-05 20:28:23.116: DEBUG/input(18923): Created 10-05 20:28:23.116: DEBUG/input(18923): Resumed 10-05 20:28:23.124: DEBUG/input(18923): gameRunning 10-05 20:28:23.132: DEBUG/input(18923): Updated 10-05 20:28:23.210: DEBUG/input(18923): Paused </code></pre>
 

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