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moveObjects();
moveCamera();
buffer.clear();
theWorld.renderScene(buffer);
buffer.update();
glCanvas.repaint();
1. it only records the screen, I need back-end generating the movie
2. it seems that no compression for the movie, I am not sure about this
Why is the AVI movie generated by Fraps so big? How can I reduce the size?
The filesize is big because there isn’t enough time to encode the movie while the game is running. The movie frames are slightly compressed, but still require a large amount of disk space due to the high resolutions. Once you have finished capturing you should convert the saved AVI into one of the popular compressed movie formats such as mpeg or divx. Recommended programs for doing this are tmpgenc (Tsunami Mpeg Encoder), and VirtualDub.
Using VirtualDub is quite easy. To create a compressed version of the AVI follow these steps:
* Start VirtualDub
* Select File->Open and choose the AVI in the Fraps directory you wish to compress.
* Select Video->Compression and choose the codec you wish to compress with (usually divx)
* Select File->Save As AVI and specify a filename for the new AVI.
If you have Windows XP you can also use Windows Movie Maker to compress the video files. If you use Windows Movie Maker it's recommended that you keep your Fraps video files at 800x600 or under.
Does anyone knows a good tool for obtaining decent movie capture from the whole screen (i.e. not only the open GL part of it)
Fraps is a universal Windows application that can be used with games using DirectX or OpenGL graphic technology
At that time, Java3D was the fastest, jME came behind it and Xith was the slowest by far (so much for tuned Java3D...).
However, all engines have evolved since then, including jPCT. So this test may be no longer valid...
jPCT does a lot of things in software while the other engines can do this hardware
You can add and remove stages from single polygons at runtime. If you want to add 20 texture layers to a single polygon if something has hit the polygon, you can easily do it. You can't do that in any other engine.
you can use the normal GLRenderer as well as the AWTGLRenderer in the same way
You don't have to care about threads or put every jPCT related command into a gameloop-construction like you've to do in jME
World.drawWireframe(FrameBuffer, Color)has a higher framerate in software mode! 
The main difference between GLRenderer and SoftwareRenderer on the one and the AWTGLRenderer on the other hand is, that the latter one is multi-threaded...it has to be, because drawing has to happen in the AWT-Event-Thread but normal jPCT operations do not
it seems to be a dual core/cpu setup or otherwise all renderers would use close to 100% cpu
If you want to throttle cpu usage, use a sleep (as you've already done). The engine itself will try to pump out data as fast as it can, which will always lead to 100% cpu usage
Have you disabled the software renderer in addition to enable the canvas one?
private void switchOptions()
{
switch (switchMode)
{
case (SWITCH_RENDERER):
{
isIdle = true;
if (buffer.usesRenderer(IRenderer.RENDERER_OPENGL))
{
keyMapper.destroy();
mouseMapper.destroy();
keyMapper = new KeyMapper(awtCanvas);
mouseMapper = new MouseMapper(awtCanvas);
frame.setVisible(false);
frame.setTitle(FRAME_TITLE + SOFTWARE_MODE);
frame.removeAll();
frame.add(awtCanvas);
frame.validate();
buffer.disableRenderer(IRenderer.RENDERER_OPENGL);
buffer.enableRenderer(IRenderer.RENDERER_SOFTWARE,
IRenderer.MODE_OPENGL);
openGL = false;
frame.setVisible(true);
gFrame = awtCanvas.getGraphics();
}
else
{
keyMapper.destroy();
mouseMapper.destroy();
frame.setVisible(false);
frame.setTitle(FRAME_TITLE + HARDWARE_MODE);
frame.removeAll();
buffer.disableRenderer(IRenderer.RENDERER_SOFTWARE);
Canvas canvas = buffer.enableGLCanvasRenderer(IRenderer.MODE_OPENGL);
keyMapper = new KeyMapper(canvas);
mouseMapper = new MouseMapper(canvas);
frame.add(canvas);
frame.validate();
frame.setVisible(true);
openGL = true;
}
isIdle = false;
break;
}
}
switchMode = 0;
}
FrameBuffer.enableGLCanvasRenderer(IRenderer.MODE_OPENGL)FrameBuffer.enableRenderer(IRenderer.RENDERER_SOFTWARE, IRenderer.MODE_OPENGL)
public static void setTitle(java.lang.String newTitle);
public static int setIcon(java.nio.ByteBuffer[] icons);