glGetString() throws NullpointerException

[Tiamat]

LWJGL 2.1.0

Exception in thread "main" java.lang.NullPointerException
   at org.lwjgl.opengl.GL11.glGetString(GL11.java:1677)

parameter doesn't seem to matter. Happens with GL_VENDOR, GL_RENDERER, GL_VERSION, GL_EXTENSIONS


oh yeah:
GeForce 8800 GTX on WinXP 64, in case it matters.

[Matzon]

Display.create first ?

[Tiamat]

That works. Thanks.

But I don't understand why I should need a visible display to call those methods. What if I want to create the display based on that information?

[Ciardhubh]

What if I want to create the display based on that information?

• Display.create()
• GL11.glGetString(...)
• Display.destroy()
• Display.create(...)

[Matzon]

or use a pbuffer to not show any visual stuff

You need to create a context to opengl to be able to call opengl commands - and this is done using display or pbuffer