Lwjgl with regal?

[FabbiX]

Its possible? I'm not an expert of low level programming but I've read that Regal Api is the same of Opengl, so I was thinking that in this way lwjgl could easyly work with device that supports only OpenglES.

[Spasi]

This is easy with LWJGL 3 by setting the Configuration.OPENGL_LIBRARY_NAME option (or running the JVM with -Dorg.lwjgl.opengl.libname=<regal library name>.

Unfortunately you cannot use it with GLFW yet, since it always loads the standard OpenGL library internally. There's planned support for externally managed contexts though, see glfw/glfw#25.

Your other options for now are JAWT and SWT.

[FabbiX]

Mmm... that's obviously a big problem.
Sorry if I'm asking you elementary things but how exactly does lwjgl use glfw?
I'll explain you the point: most of actual android devices running opengl es (including the one I'm using now) can use an old mesa driver for running opengl; the problem is that those drivers are ancient and even if they work they have got thousand of problems like color bugs and so on.
I was thinking about using the old drivers for glfw if as I understood it is used only for marginal thing like application menubar.
I repeat I'm not an expert developer, so sorry if I'm only make you waste time.

[Spasi]

LWJGL 3 doesn't use GLFW exactly, it simply exposes its API with Java bindings. GLFW is loaded as a shared library (.dll/.so/.dylib), which is built from source without any modifications.

A workaround for your problem would be to create a custom GLFW build that loads Regal instead of OpenGL. You can replace the one that comes with LWJGL and it will work fine (assuming you also set OPENGL_LIBRARY_NAME accordingly).

[FabbiX]

Thanks you for the answer !