How to render direct OpenGL calls?

Troubleshooting graphics
1

I'm having some problems trying to render GL11.xxx directly in jme.

For now I have an Class extends Geometry, and implements draw() method.



I would like to know the best way to render lines, points and triangles.



Thank you.

2

do you really need to call GL11 directly?

can’t you use the Classes Point, Line and stuff?

3

Is there anything about the solution you use now that's not to your liking? There's no real specific mechanism for this in jME at the moment.

4

Ok, llama answered me :slight_smile:



I'll explain a little bit better my problem:



I'm writing a class called JPhysXDebugRenderer which use GL11 calls based on the Lesson 301: Debug Renderer from Ageia's support.

This class is JME independent, only depends on LWJGL.



Then I create a class called JPhysXJMEDebugRenderer (extends Geometry) to render in JME.



On the public void draw() method I run the JPhysXDebugRenderer.renderData().



I was hoping that JME had something ready for this case, but it would go against the principle of abstracting the renderer.

I'll try to do it using only JME.



Thanks!

5

Take a look at ImageGraphics and LWJGLImageGraphics, that's one way of handeling abstraction…

6

Ok… I managed it to work by extending the LWJGLRenderer.



One last issue. It doesn't render anything unless I have at least one Box (or any other standard shape) attached to the rootNode.



<edit> The Box MUST be attached before my JPhysXDebugNode (extends Geometry) otherwise it doens't show either. </edit>



Looks like I'm missing some call to allow the renderer to work. Does anyone knows something about this?



Thanks