Material.OnSetContext C# (CSharp) Method

    protected override void OnSetContext()
    {
        if (sphere == null)
        {
            sphere = new GLUSphere(GI, 1, 32, 32);
            sphere.DrawingStyle = QuadricDrawStyle.Fill;
        }

        GI.Features.DepthTest.Enable();
        gl.glDepthFunc(gl.GL_LESS);

        GI.Features.Lighting.Enable();
        GI.Features.Lighting.Light0.Enable();

        GI.Features.Lighting.Light0.Ambient = ambient;
        GI.Features.Lighting.Light0.Diffuse = diffuse;
        GI.Features.Lighting.Light0.Location = position;

        gl.glLightModelfv(gl.GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
        gl.glLightModelfv(gl.GL_LIGHT_MODEL_LOCAL_VIEWER, local_view);

        
        GI.Buffers.ColorBuffer.Color = new ColorRGBA(0.0f, 0.1f, 0.1f, 0.0f);
    }