From d436484c2119a6f0a5734af8b1797125d1cff776 Mon Sep 17 00:00:00 2001
From: ThorstenB <brehmt@gmail.com>
Date: Mon, 26 Mar 2012 21:09:10 +0200
Subject: [PATCH] Prevent negative alpha value (affects splash screen)

---
 src/Main/renderer.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Main/renderer.cxx b/src/Main/renderer.cxx
index 5083f89da..3f71d1f74 100644
--- a/src/Main/renderer.cxx
+++ b/src/Main/renderer.cxx
@@ -1365,7 +1365,7 @@ FGRenderer::update( ) {
         double sAlpha = _splash_alpha->getDoubleValue();
         sAlpha -= SGMiscd::max(0.0,delay_time/fade_time);
         FGScenerySwitchCallback::scenery_enabled = (sAlpha<1.0);
-        _splash_alpha->setDoubleValue(sAlpha);
+        _splash_alpha->setDoubleValue((sAlpha < 0) ? 0.0 : sAlpha);
     }
 
     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));