Multiple Application instances in Swing

Equilibrium · January 22, 2011, 8:26am

Hello,

Once I asked the question if it is possible to use multiple application instances within swing. The answer was that this will not work the way I suppose it to work? What exactly is the reason?

If it would work (another way) could Materials, Textures etc created by one AssetManager be shared within the two different applications?

If such a support is not included will there be one in future and if not, why? Is there a restriction from within opengl for that or is Java the problem?

Thanks a lot.

Regards,

Equi

normen · January 22, 2011, 11:41am

Its a restriction of lwjgl.

Equilibrium · January 22, 2011, 11:48am

Damn. I hate lwjgl for this…

normen · January 22, 2011, 11:57am

Do it like I do in JMP when you actually want to share the assets and make a lightweight Swing panel from jME previews.

Equilibrium · January 22, 2011, 1:40pm

Hello,

thanks but I need mor than only previews. Nevertheless I’ll look at your code.

Regards,

Equi

normen · January 22, 2011, 1:55pm

… “preview” is just another name for those views in the renderer that are rendered before the main view, theres no restrictions to them per se, only that they dont render to screen directly.

Equilibrium · January 22, 2011, 2:40pm

Really,

but they are lightweight components?

normen · January 22, 2011, 2:49pm

No, its a function of the jME renderer, it has nothing to do with swing, it just creates the image data, look at TestRenderToMemory.java for an example.

Momoko_Fan · January 22, 2011, 8:13pm

LWJGL actually supports multiple canvases through its AWTGLCanvas class, however it is slower than using the Display.setParent() method.

Equilibrium · January 22, 2011, 9:02pm

Hello Momoko,

this is really good news. What I would now be interessted in is following.

The fact that lwjgl supports multiple AWTGLCanvas canvases means that the result is rendered to swing (or AWT in that case) panels, right? How can I perform this in my code and the most important question, can I use two Application instances for that? I need multiple separate application instances. The last question would be if the materials, textures etc. which are created from one AssetManager of one application could be used by the other application.

Thanks a lot,

Regards,

Equi

Momoko_Fan · January 22, 2011, 10:41pm

An AWTGLCanvas is not a panel, it works the same way as the current way canvases work in jME3, except you can have more than one. It is possible to render to a panel, for that you have TestRenderToMemory.

Sharing the GL objects from one instance to another is possible, if you use context sharing, its fairly simple to enable it in LWJGL