Offscreen Opengl App

Hello,

I am using http://spout.zeal.co/ to send the content of a texture produced with JOGL and it's working great.

I'm using a FBO with a texture attached.

I do not need anymore to have a window in my Java app that displays the rendering.

Can anyone point me to a documentation or an example that shows how to set-up an opengl context without a screen (NewtFactory.createScreen) and without a window (GLWindow.create) ?

I'm looking for the simplest amount of code I can get away with since I do not need to display the rendering in the Java App.

Thanks!

Hello

Maybe this could help you:
https://jogamp.org/cgit/jogl.git/tree/src/test/com/jogamp/opengl/test/junit/jogl/offscreen

Hello,

Thanks for your answer.

TestOffscreen01GLPBufferNEWT renders in PBuffer
TestOffscreen02BitmapNEWT renders to a window (glWindow.setVisible(true);)

I need to render in a texture, and without creating a Window since I don't need to display it.

Look for com.jogamp.opengl.FBObject in the projects "jogl" and "jogl-demos". You can look at an example based on JogAmp's Ardor3D Continuation and JOGL in the project "ardor3d-screenshot":
https://github.com/letmaik/ardor3d-screenshot/blob/master/src/main/java/com/github/neothemachine/ardor3d/screenshot/JoglNewtScreenshotCanvas.java It uses JOGL for server-based rendering. It might be a bit difficult to understand how JogAmp's Ardor3D Continuation works to reproduce the same behaviour in pure JOGL without this engine but it seems to do what you're looking for.