the former GDE and now jMonkeyPlatform is slowly becoming reality but I am still having massive problems including the OpenGL canvas working in the NetBeans platform / Swing windowing system. Since that keeps me from working on the more important things like proper base structure and features I was wondering if somebody who is more adept with lwjgl and/or jogl canvas implementation might want to have a look / give a hand, momoko_fan has got lots of other stuff to do.
The problem(s):
SceneViewer goes blank sometimes when the window configuration changes
OpenGL canvas size is not updating correctly
Where to look/what I found out until now:
The class that opens/uses the canvas is com.jme3.gde.core.sceneviewer.SceneViewerTopComponent.java
The com.jme3.system.lwjgl.LwjglCanvas quits the whole jme3 application when this happens, so the isDisplayable() method of the canvas returns false at that point
Even when the app is not destroyed at that point the screen gets lost
The containing window does not get any componentHidden or -Disposed messages when this happens
Seems like the component tree is modified somehow
Build info for jMonkeyPlatform dev version can be found on the googlecode page.
I tried the TestCanvas test with both LWJGL and JOGL, tried minimizing, maximizing, resizing it, waiting, etc, but I couldn't get it to stop working Maybe it's a Mac issue? Does TestCanvas work correctly for you? Maybe it's netbeans platform pulling our leg.
the size problem is a matter of layout managers. Use a GridLayout and assign a minimum-maximum-preferred size to the canvas != 0 and it works.
I met a lot of weird things when trying to maximize or close and reopen the scene viewer. The display manager dies when the canvas parent is detached from the component tree and it doesn't seem happy to come back when the same canvas is reattached.
To know when a component is attached-reattached you can use an AncestorListener or overwrite the addNotify-removeNotify methods of a component (SceneViewerTopComponent in this case).
I played a bit with the code trying to restart the jme application context after a detach but i have an exception like this:
org.lwjgl.opengl.OpenGLException: Invalid value (1281)
at org.lwjgl.opengl.Util.checkGLError(Util.java:54)
at org.lwjgl.opengl.GL20.glUseProgram(GL20.java:275)
at com.jme3.renderer.lwjgl.LwjglRenderer.updateUniform(LwjglRenderer.java:477)
at com.jme3.renderer.lwjgl.LwjglRenderer.updateShaderUniforms(LwjglRenderer.java:556)
at com.jme3.renderer.lwjgl.LwjglRenderer.setShader(LwjglRenderer.java:751)
at com.jme3.material.Material.render(Material.java:553)
at com.jme3.renderer.RenderManager.renderGeometry(RenderManager.java:237)
at com.jme3.renderer.queue.RenderQueue.renderGeometryList(RenderQueue.java:100)
at com.jme3.renderer.queue.RenderQueue.renderQueue(RenderQueue.java:139)
at com.jme3.renderer.RenderManager.flushQueue(RenderManager.java:346)
at com.jme3.renderer.RenderManager.renderViewPort(RenderManager.java:446)
at com.jme3.renderer.RenderManager.render(RenderManager.java:463)
in the subsequent call of the application's update method.
I tried the TestCanvas test with both LWJGL and JOGL, tried minimizing, maximizing, resizing it, waiting, etc, but I couldn't get it to stop working :P Maybe it's a Mac issue? Does TestCanvas work correctly for you? Maybe it's netbeans platform pulling our leg.
orly? omg, f**k.. yeah, could really be the windowing adaptation of netbeans, gotta check that indepth :cry:
pgi said:
the size problem is a matter of layout managers. Use a GridLayout and assign a minimum-maximum-preferred size to the canvas != 0 and it works.
I met a lot of weird things when trying to maximize or close and reopen the scene viewer. The display manager dies when the canvas parent is detached from the component tree and it doesn't seem happy to come back when the same canvas is reattached.
To know when a component is attached-reattached you can use an AncestorListener or overwrite the addNotify-removeNotify methods of a component (SceneViewerTopComponent in this case).
I played a bit with the code trying to restart the jme application context after a detach but i have an exception like this:
I tried the TestCanvas test with both LWJGL and JOGL, tried minimizing, maximizing, resizing it, waiting, etc, but I couldn't get it to stop working :P Maybe it's a Mac issue? Does TestCanvas work correctly for you? Maybe it's netbeans platform pulling our leg.
Ah you just tested your own test classes, ok :) thought the SceneViewer worked on windows..
The crash is probably related to the way i try to kill and recreate the jme3 context, it happens both with SceneViewer and the Canvas3D class i use for jps.
Leaving the update method of SceneViewerApplication empty and destroying-recreating everything in the remove-add notify methods of SceneViewerTopComponent kinda works (the display manager goes off and on wthout problems).
It isn't a good solution because restarting the display manager requires a few seconds and in the netbeans platform the components are added and removed quite often.
The restart-start methods of the jme context didn't help: the display manager goes up and dies after few seconds.
This bug happens because the canvas is temporarily removed from the screen to re-adjust the layout to include other windows, etc. While this happens the canvas's native peer is destroyed so LWJGL is no longer bound to it. I was able to reproduce the bug outside of netbeans.
I fixed the bug by using Display.setParent(null) while the canvas doesnt have a native peer, when the native peer comes back on, I call Display.setParent(canvas) to restore it again. Seems to work fine, I can play around with the jme3 window, move it around, resize it, put it into other components, etc and it doesn't break (altho it lags a bit when I do that, not sure why). Only problem is that when I close the window, the OpenGL thread continues to run for some reason and then obviously I get an exception, guess removeNotify is not called when the window is killed? When I try to open the jme3 window again through the menu netbeans freezes completely.
Maybe it's a Mac issue? Does TestCanvas work correctly for you? Maybe it's netbeans platform pulling our leg.