From 172cb747633467f0afe029b54a82e56b5e098423 Mon Sep 17 00:00:00 2001
From: bzzt <bzzt@bzzt.bzzt>
Date: Wed, 20 Feb 2019 13:37:00 +0000
Subject: [PATCH] Delete composite map layers on demand

---
 components/terrain/compositemaprenderer.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/components/terrain/compositemaprenderer.cpp b/components/terrain/compositemaprenderer.cpp
index 3dc0aa41c5..0ef6491977 100644
--- a/components/terrain/compositemaprenderer.cpp
+++ b/components/terrain/compositemaprenderer.cpp
@@ -122,6 +122,8 @@ void CompositeMapRenderer::compile(CompositeMap &compositeMap, osg::RenderInfo &
 
         ++compositeMap.mCompiled;
 
+        compositeMap.mDrawables[i] = nullptr;
+
         if (timeLeft)
         {
             *timeLeft -= timer.time_s();
@@ -131,6 +133,8 @@ void CompositeMapRenderer::compile(CompositeMap &compositeMap, osg::RenderInfo &
                 break;
         }
     }
+    if (compositeMap.mCompiled == compositeMap.mDrawables.size())
+        compositeMap.mDrawables = std::vector<osg::ref_ptr<osg::Drawable>>();
 
     state.haveAppliedAttribute(osg::StateAttribute::VIEWPORT);