From afbfca17ce075fcc8bbfcace27c758ef9cf56591 Mon Sep 17 00:00:00 2001
From: Ykkrosh <philip@wildfiregames.com>
Date: Thu, 24 Mar 2011 23:54:08 +0000
Subject: [PATCH] Fix silhouettes being displayed for some models that always
 stick into the ground

This was SVN commit r9117.
---
 source/renderer/Renderer.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/source/renderer/Renderer.cpp b/source/renderer/Renderer.cpp
index 924c3a698c..43033b87e7 100644
--- a/source/renderer/Renderer.cpp
+++ b/source/renderer/Renderer.cpp
@@ -1218,7 +1218,13 @@ void CRenderer::RenderSilhouettes()
 
 	{
 		PROFILE("render patches");
+
+		// To prevent units displaying silhouettes when parts of their model
+		// protrude into the ground, only occlude with the back faces of the
+		// terrain (so silhouettes will still display when behind hills)
+		glCullFace(GL_FRONT);
 		m->terrainRenderer->RenderPatches();
+		glCullFace(GL_BACK);
 	}
 
 	{