[Solved] NullPointerException in ARBBufferObject.glGenBuffersARB()

[julien.1486]

Hi !

I'm writing a piece of code in order to render my model using VBOs and this :

vbos = BufferUtils.createIntBuffer(mats.size()*2);            //mats.size() = 2         
ARBVertexBufferObject.glGenBuffersARB(vbos);

throws a NullPointerException at org.lwjgl.opengl.ARBBufferObject.glGenBuffersARB(ARBBufferObject.java:59);
This line is :

long function_pointer = caps.ARB_buffer_object_glGenBuffersARB_pointer;

Is it something strange with GLContext.getCapabilities() ? Because this line throw a NullPointerException too :

if(GLContext.getCapabilities().GL_ARB_vertex_buffer_object){
	// ...		
}

I don't know what to do 

Thanks a lot for your help !

[Matzon]

have you created the display or pbuffer first?

[julien.1486]

Yes, I guess...

I have a createWindow() function :

private void createWindow() throws Exception {
        Display.setFullscreen(fullscreen);
        DisplayMode d[] = Display.getAvailableDisplayModes();
        for (int i = 0; i < d.length; i++) {
            if (d[i].getWidth() == 640
                && d[i].getHeight() == 480
                && d[i].getBitsPerPixel() == 32) {
                displayMode = d[i];
                break;
            }
        }
        Display.setDisplayMode(displayMode);
        Display.setTitle(windowTitle);
        Display.create();
    }

[Matzon]

yes, but are you sure that the method has been called first?

[julien.1486]

Oh, no 

You're right ! I called my function first in order to do some tests...

Thank you for the solution, Matzon