cube_simple effect modified to moderngl

Author: helgrima

demosys/effect_templates/cube_simple/effect.py

@@ -1,3 +1,4 @@
+import moderngl as mgl
 from demosys.effects import effect
 from demosys import geometry
 from OpenGL import GL
@@ -12,7 +13,7 @@ def __init__(self):
 
     @effect.bind_target
     def draw(self, time, frametime, target):
-        GL.glEnable(GL.GL_DEPTH_TEST)
+        self.ctx.enable(mgl.DEPTH_TEST)
 
         # Rotate and translate
         m_mv = self.create_transformation(rotation=(time * 1.2, time * 2.1, time * 0.25),