Gotta get 120 FPS for a constantly shifting 5000+ vertex 3D scene on 1680x1050+ pixel 120Hz screens nowadays ya know). It's a relatively new concept called General-Purpose computing on a GPU.ĭo you know Nvidia's CUDA? OpenCL is pretty much the Kronos group's OpenGL-like answer to that.īasically a GPU has a lot of processor 'cores' (and fast VRAM) which makes it good at performing the same calculation on a lot of objects at once for a high throughput (individual vertices and pixels usually. It defines a set of functions you can execute on your GPU (or CPU) for more general purpose computing instead of graphics (this is my rough understanding). There's also an About page for LWJGL and a JOGL overview page that will give you a rough idea of the goals of both projects (though, IMO, the LWJGL one seems somewhat more advertise-y). You might try doing a Google search for JOGL vs. There's quite a few C/C++ resources in the sidebar for r/opengl. The hardest part of using C++ resources will probably be figuring out creation of a window with a correct OpenGL context on your platform (in your case, Java), but after that I don't think it'll be all that different, and the documentation for your Java library will probably explain many of the differences in how to use OpenGL.

In both cases, I think you're more likely to find C/C++ resources for OpenGL than any specific to Java, for instance there's the OpenGL wiki. I think LWJGL does also attempt to help you out with, eg., OpenGL context creation (though I imagine that's easier in Java than in C++, since Java has a standard windowing system library). Also, I started with the recommendation to learn OpenGL 3 rather than the fixed-pipeline OpenGL 2 despite the increased difficulty of programmable shaders being required, so my focus is on OpenGL 3.Īs to any sort of comparison, I have heard that JOGL, being the 'Java bindings for the OpenGL API', is more raw OpenGL (I'm going to guess that it'll mean that you can better pull from, eg., C++ resources, but maybe less from JOGL specifically), while LWJGL does make some changes to OpenGL's functions, and is meant to be a convenient library for game programming (I'm mostly certain it was created by Puppy Games for their games). Ugh.), and I currently have a more passive interest in OpenGL in general, but I have looked at LWJGL a bit. I've heard the source code might be enlightening as well (sounds like work :P).īefore I go further, I should say that I don't know much about OpenGL for Java (I've barely gotten into OpenGL 3.2 in C++ on Mac OS X. I just wanted to point out, and maybe you know this already, that LWJGL has the Javadocs for download (so you might be able to get your IDE to help by displaying documentation next to functions you're typing), and a wiki that has a few decent examples.

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