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| -rw-r--r-- | src/test/com/jogamp/opengl/test/junit/jogl/offscreen/ShareWithExternalContextTest.java | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/ShareWithExternalContextTest.java b/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/ShareWithExternalContextTest.java new file mode 100644 index 000000000..cd5ce8217 --- /dev/null +++ b/src/test/com/jogamp/opengl/test/junit/jogl/offscreen/ShareWithExternalContextTest.java @@ -0,0 +1,180 @@ +package com.jogamp.opengl.test.junit.jogl.offscreen; + +import java.awt.EventQueue; +import java.awt.event.ActionEvent; +import java.awt.event.ActionListener; +import java.lang.reflect.InvocationTargetException; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.Executors; +import java.util.concurrent.ScheduledExecutorService; +import java.util.concurrent.TimeUnit; + +import javax.swing.Timer; + +import org.junit.Test; + +import com.jogamp.opengl.*; + +/** + * Test for context sharing with an external context. Creates an external GL context, then + * sets up an offscreen drawable which shares with it. The test contains two cases: one + * which creates and repaints the offscreen drawable on the EDT, and one which does so on + * a dedicated thread. On Windows+NVidia, the former fails. + */ +public class ShareWithExternalContextTest { + + private static final int LATCH_COUNT = 5; + + private void doTest(boolean aUseEDT) throws Exception { + CountDownLatch latch = new CountDownLatch(LATCH_COUNT); + final MyGLEventListener listener = new MyGLEventListener(aUseEDT, latch); + + /** + * For the purpose of this test, this offscreen drawable will be used to create + * an external GL context. In the actual application, the external context + * represents a GL context which lives outside the JVM. + */ + Runnable runnable = new Runnable() { + public void run() { + GLProfile glProfile = GLProfile.getDefault(); + GLCapabilities caps = new GLCapabilities(glProfile); + GLAutoDrawable buffer = GLDrawableFactory.getDesktopFactory().createOffscreenAutoDrawable( + GLProfile.getDefaultDevice(), caps, null, 512, 512 + ); + // The listener will set up the context sharing in its init() method. + buffer.addGLEventListener(listener); + buffer.display(); + } + }; + + // Wait for test to finish. + Thread thread = new Thread(runnable); + thread.start(); + thread.join(); + latch.await(3, TimeUnit.SECONDS); + + // If exceptions occurred, fail. + Exception e = listener.fException; + if (e != null) { + throw e; + } + } + + @Test + public void testOnEDT() throws Exception { + doTest(true); + } + + @Test + public void testOnExecutorThread() throws Exception { + doTest(false); + } + + /** + * Listener that creates an external drawable and an offscreen drawable, with context + * sharing between the two. + */ + private static class MyGLEventListener implements GLEventListener { + private GLOffscreenAutoDrawable fOffscreenDrawable; + private boolean fUseEDT; + private CountDownLatch fLatch; + + private Exception fException = null; + + public MyGLEventListener(boolean aUseEDT, CountDownLatch aLatch) { + fUseEDT = aUseEDT; + fLatch = aLatch; + } + + @Override + public void init(GLAutoDrawable drawable) { + GL2 gl = drawable.getGL().getGL2(); + gl.glClearColor(0.5f, 0.5f, 0.5f, 1.0f); + gl.glClear(GL.GL_COLOR_BUFFER_BIT); + + // Create the external context on the caller thread. + final GLContext ext = GLDrawableFactory.getDesktopFactory().createExternalGLContext(); + + // This runnable creates an offscreen drawable which shares with the external context. + Runnable initializer = new Runnable() { + public void run() { + fOffscreenDrawable = GLDrawableFactory.getDesktopFactory().createOffscreenAutoDrawable( + GLProfile.getDefaultDevice(), + new GLCapabilities(GLProfile.getDefault()), + new DefaultGLCapabilitiesChooser(), + 512, 512 + ); + fOffscreenDrawable.setSharedContext(ext); + // Causes GLException on NVidia driver if using EDT (see below) + try { + fOffscreenDrawable.display(); + } catch (GLException e) { + fException = e; + throw e; + } + } + }; + + /** + * Depending on the test case, invoke the initialization on the EDT or on an + * executor thread. The test also displays the offscreen drawable a few times + * before finishing. + */ + if (fUseEDT) { + // Initialize using invokeAndWait(). + try { + EventQueue.invokeAndWait(initializer); + } catch (InterruptedException | InvocationTargetException e) { + fException = e; + } + + // Display using a Swing timer, i.e. also on the EDT. + Timer t = new Timer(200, new ActionListener() { + int i = 0; + + @Override + public void actionPerformed(ActionEvent e) { + if (++i > LATCH_COUNT) { + return; + } + + System.out.println("Update on EDT"); + fOffscreenDrawable.display(); + fLatch.countDown(); + } + }); + t.start(); + } else { + // Initialize and display using a single-threaded executor. + ScheduledExecutorService exe = Executors.newSingleThreadScheduledExecutor(); + exe.submit(initializer); + exe.scheduleAtFixedRate(new Runnable() { + int i = 0; + + @Override + public void run() { + if (++i > LATCH_COUNT) { + return; + } + + System.out.println("Update on Executor thread"); + fOffscreenDrawable.display(); + fLatch.countDown(); + } + }, 0, 200, TimeUnit.MILLISECONDS); + } + } + + @Override + public void dispose(GLAutoDrawable drawable) { + } + + @Override + public void display(GLAutoDrawable drawable) { + } + + @Override + public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { + } + } +} |