1097 2014-10-24 15:49:43 +0200 AWTGLReadBufferUtil.readPixelsToBufferedImage() causes exception on SWT 2015-06-09 02:00:17 +0200 1 1 3 JogAmp Jogl core 2 pc_all linux UNCONFIRMED --- normal --- 0 someuser sgothel mjames sgothel --- --- oldest_to_newest 4419 0 someuser 2014-10-24 15:49:43 +0200 When org.eclipse.swt.opengl.GLCanvas is used together with capturing screenshot by AWTGLReadBufferUtil.readPixelsToBufferedImage() expection is thrown javax.media.opengl.GLException: Should not call this at jogamp.opengl.windows.wgl.WindowsExternalWGLContext$Drawable.getSurfaceWidth(WindowsExternalWGLContext.java:133) ~[jogl-all-2.2.4.jar:2.2.4] at com.jogamp.opengl.util.awt.AWTGLReadBufferUtil.readPixelsToBufferedImage(AWTGLReadBufferUtil.java:94) ~[jogl-all-2.2.4.jar:2.2.4] at com.jogamp.opengl.util.awt.AWTGLReadBufferUtil.readPixelsToBufferedImage(AWTGLReadBufferUtil.java:71) ~[jogl-all-2.2.4.jar:2.2.4] Windows x64, SWT 4.4, Java 1.8.0_20 (x64), JOGL 2.2.4 4723 1 mjames 2015-06-09 02:00:17 +0200 I am also experiencing this bug, and it is preventing my Eclipse RCP application from exporting a screenshot. It may or may not be related to how I am using canvases and contexts, but finding this bug filed here gives me hope that I am using AWTGLReadBufferUtil and BufferedImage correctly. This is with jogl 2.3.2 and Eclipse SWT. GLProfile glp = GLProfile.getDefault(); AWTGLReadBufferUtil screenshot = new AWTGLReadBufferUtil(glp, false); BufferedImage bi = screenshot.readPixelsToBufferedImage(gl, true); com.jogamp.opengl.GLException: Should not call this at jogamp.opengl.x11.glx.X11ExternalGLXContext$Drawable.getSurfaceWidth(X11ExternalGLXContext.java:145) at com.jogamp.opengl.util.awt.AWTGLReadBufferUtil.readPixelsToBufferedImage(AWTGLReadBufferUtil.java:94) at com.jogamp.opengl.util.awt.AWTGLReadBufferUtil.readPixelsToBufferedImage(AWTGLReadBufferUtil.java:71) at com.raytheon.viz.core.gl.internal.GLTarget.screenshot(GLTarget.java:1248)