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javaopengllwjgldepth

OpenGL Depth buffer not applying

I am quite new at openGL rendering, and no matter what I do the depth depth won't work. i obviously already enabled depth test (glEnable(GL_DEPTH_TEST);), and i clear the buffer each frame.

But openGL keeps showing last objects rendered in front of others...

You can see my code on my github. These are the two files concerned : Main loop. My main loop is at src/tk/azertyfun/fps/Fps.java and the render at src/tk/azertyfun/fps/objects/Mesh.java.

I am using java and lwjgl.

Solution

  • As you say, you correctly enable depth testing before your rendering loop starts with:

    glEnable(GL_DEPTH_TEST);

    ...and correctly clear the buffer at the beginning of each frame:

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    The first thing you then draw in each frame via your render() method is with:

    skybox.draw();

    If you look at the implementation of the draw() method in Skybox, you'll see that you have:

    glDisable(GL_DEPTH_TEST);

    So it is disabled before you actually draw anything and never enabled again.