how do I set quad buffering with jogl 2.0
- by tony danza
I'm trying to create a 3d renderer for stereo vision with quad buffering with Processing/Java. The hardware I'm using is ready for this so that's not the problem. I had a stereo.jar library in jogl 1.0 working for Processing 1.5, but now I have to use Processing 2.0 and jogl 2.0 therefore I have to adapt the library.
Some things are changed in the source code of Jogl and Processing and I'm having a hard time trying to figure out how to tell Processing I want to use quad buffering.
Here's the previous code:
public class Theatre extends PGraphicsOpenGL{
protected void allocate() {
if (context == null)
{
// If OpenGL 2X or 4X smoothing is enabled, setup caps object for them
GLCapabilities capabilities = new GLCapabilities();
// Starting in release 0158, OpenGL smoothing is always enabled
if (!hints[DISABLE_OPENGL_2X_SMOOTH])
{
capabilities.setSampleBuffers(true);
capabilities.setNumSamples(2);
}
else if (hints[ENABLE_OPENGL_4X_SMOOTH])
{
capabilities.setSampleBuffers(true);
capabilities.setNumSamples(4);
}
capabilities.setStereo(true);
// get a rendering surface and a context for this canvas
GLDrawableFactory factory = GLDrawableFactory.getFactory();
drawable = factory.getGLDrawable(parent, capabilities, null);
context = drawable.createContext(null);
// need to get proper opengl context since will be needed below
gl = context.getGL();
// Flag defaults to be reset on the next trip into beginDraw().
settingsInited = false;
}
else
{
// The following three lines are a fix for Bug #1176
// http://dev.processing.org/bugs/show_bug.cgi?id=1176
context.destroy();
context = drawable.createContext(null);
gl = context.getGL();
reapplySettings();
}
}
}
This was the renderer of the old library. In order to use it, I needed to do size(100, 100, "stereo.Theatre"). Now I'm trying to do the stereo directly in my Processing sketch. Here's what I'm trying:
PGraphicsOpenGL pg = ((PGraphicsOpenGL)g);
pgl = pg.beginPGL();
gl = pgl.gl;
glu = pg.pgl.glu;
gl2 = pgl.gl.getGL2();
GLProfile profile = GLProfile.get(GLProfile.GL2);
GLCapabilities capabilities = new GLCapabilities(profile);
capabilities.setSampleBuffers(true);
capabilities.setNumSamples(4);
capabilities.setStereo(true);
GLDrawableFactory factory = GLDrawableFactory.getFactory(profile);
If I go on, I should do something like this:
drawable = factory.getGLDrawable(parent, capabilities, null);
but drawable isn't a field anymore and I can't find a way to do it. How do I set quad buffering?
If I try this:
gl2.glDrawBuffer(GL.GL_BACK_RIGHT);
it obviously doesn't work :/
Thanks.
