Fix rendering when Iris isn't installed

core/src/main/java/com/seibel/distanthorizons/core/render/renderer/LodRenderer.java

@@ -246,7 +246,7 @@ public class LodRenderer
 			if (Config.Client.Advanced.Graphics.Quality.dhFadeFarClipPlane.get()
 				// the fade shader messes with the GL state in a way Iris doesn't like,
 				// so skip it if a shader is active
-				&& !IRIS_ACCESSOR.isShaderPackInUse())
+				&& (IRIS_ACCESSOR == null || !IRIS_ACCESSOR.isShaderPackInUse()))
 			{
 				profiler.popPush("Fade Far Clip Fade");
 				DhFadeRenderer.INSTANCE.render(