CODEWITHSUNDEEP
javaopengllwjgl
hacksoi
hacksoi

Reputation: 1399

LWJGL: pass OpenGL context between threads

I have two threads running in my program. When I try to use OpenGL functions in the thread that is not my main, it throws an IllegalStateException:No OpenGL context is current in the current thread. So my question is, how do I pass the context from the main thread to a different thread? I am using LWJGL 3.

Upvotes: 1

Views: 1168

Answers (2)

Roovy
Roovy

Reputation: 79

Take a look at this example. It uses a Drawable that you can use in your two Java Threads. I'm not entirely sure if it still works since a lot of this class is associated with LWJGL 2. I'll test it soon and let you know if this or your method is more efficient (Gonna create a tiny micro-benchmark :) .

Upvotes: 0

hacksoi
hacksoi

Reputation: 1399

I think I solved it but I'm not 100% sure it's the best way to do it. You have to call GLFW.glfwMakeContextCurrent(MemoryUtil.NULL); in the thread you want to depart from, then call GLFW.glfwMakeContextCurrent(window); GLContext.createFromCurrent(); from the thread you want to switch to.

Upvotes: 2

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