From 5c61e9735825d0f1514c0e822972c3dbe78539f8 Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Wed, 2 Oct 2002 16:03:25 +0000
Subject: [PATCH] ref() the cloud states before use so that if we are
 dyanmically creating and deleting cloud layers we don't inadvertantly delete
 a cloud state.

---
 simgear/scene/sky/cloud.cxx | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/simgear/scene/sky/cloud.cxx b/simgear/scene/sky/cloud.cxx
index 687f8d64..74fd99e6 100644
--- a/simgear/scene/sky/cloud.cxx
+++ b/simgear/scene/sky/cloud.cxx
@@ -368,5 +368,9 @@ ssgSimpleState *SGCloudMakeState( const string &path ) {
     state->enable( GL_ALPHA_TEST );
     state->setAlphaClamp( 0.01 );
 
+    // ref() the state so it doesn't get deleted if the last layer of
+    // it's type is deleted.
+    state->ref();
+
     return state;
 }
-- 
2.39.5