Inject deferred shaders instead of faking an effect

Author: einarf

demosys/deferred/__init__.py

@@ -1 +1,9 @@
-from .renderer import DeferredRenderer  # noqa
+import os
+
+from demosys.conf import settings
+
+settings.add_shader_dir(
+    os.path.join(os.path.dirname(os.path.abspath(__file__)), 'shaders')
+)
+
+from .renderer import DeferredRenderer  # noqa