From 0568c93b39d2b08713caa327021938994213a016 Mon Sep 17 00:00:00 2001
From: AnyOldName3 <krizdjali+github@gmail.com>
Date: Tue, 3 Oct 2017 03:40:23 +0100
Subject: [PATCH] Add specific shadow source files to MWRender

---
 apps/openmw/CMakeLists.txt                |  1 +
 apps/openmw/mwrender/renderingmanager.cpp |  8 ++-----
 apps/openmw/mwrender/shadow.cpp           | 11 +++++++++
 apps/openmw/mwrender/shadow.hpp           | 27 +++++++++++++++++++++++
 4 files changed, 41 insertions(+), 6 deletions(-)
 create mode 100644 apps/openmw/mwrender/shadow.cpp
 create mode 100644 apps/openmw/mwrender/shadow.hpp

diff --git a/apps/openmw/CMakeLists.txt b/apps/openmw/CMakeLists.txt
index 47a30f9a01..97744d4dd0 100644
--- a/apps/openmw/CMakeLists.txt
+++ b/apps/openmw/CMakeLists.txt
@@ -24,6 +24,7 @@ add_openmw_dir (mwrender
     creatureanimation effectmanager util renderinginterface pathgrid rendermode weaponanimation
     bulletdebugdraw globalmap characterpreview camera localmap water terrainstorage ripplesimulation
     renderbin actoranimation landmanager
+	shadow
     )
 
 add_openmw_dir (mwinput
diff --git a/apps/openmw/mwrender/renderingmanager.cpp b/apps/openmw/mwrender/renderingmanager.cpp
index 04c3355cab..e670eaebc0 100644
--- a/apps/openmw/mwrender/renderingmanager.cpp
+++ b/apps/openmw/mwrender/renderingmanager.cpp
@@ -14,11 +14,6 @@
 #include <osg/ComputeBoundsVisitor>
 
 #include <osgShadow/ShadowedScene>
-#include <osgShadow/ViewDependentShadowMap>
-#include <osgShadow/ShadowMap>
-#include <osgShadow/ParallelSplitShadowMap>
-#include <osgShadow/ShadowMap>
-#include <osgShadow/LightSpacePerspectiveShadowMap>
 
 #include <osgUtil/LineSegmentIntersector>
 #include <osgUtil/IncrementalCompileOperation>
@@ -57,6 +52,7 @@
 #include "water.hpp"
 #include "terrainstorage.hpp"
 #include "util.hpp"
+#include "shadow.hpp"
 
 namespace MWRender
 {
@@ -228,7 +224,7 @@ namespace MWRender
         int mapres = 2048;
         settings->setTextureSize(osg::Vec2s(mapres,mapres));
 
-        osgShadow::MinimalShadowMap* tech = new osgShadow::LightSpacePerspectiveShadowMapDB();
+        MWShadow* tech = new MWShadow();
         shadowedScene->setShadowTechnique(tech);
 
         tech->setMaxFarPlane(0);
diff --git a/apps/openmw/mwrender/shadow.cpp b/apps/openmw/mwrender/shadow.cpp
new file mode 100644
index 0000000000..17cc5156bb
--- /dev/null
+++ b/apps/openmw/mwrender/shadow.cpp
@@ -0,0 +1,11 @@
+#include "shadow.hpp"
+
+namespace MWRender
+{
+    void MWShadow::ViewData::init(MWShadow * st, osgUtil::CullVisitor * cv)
+    {
+        LightSpacePerspectiveShadowMapDB::ViewData::init(st, cv);
+        osg::StateSet * stateset = _camera->getOrCreateStateSet();
+        stateset->removeAttribute(osg::StateAttribute::CULLFACE);
+    }
+}
diff --git a/apps/openmw/mwrender/shadow.hpp b/apps/openmw/mwrender/shadow.hpp
new file mode 100644
index 0000000000..51338c5bf8
--- /dev/null
+++ b/apps/openmw/mwrender/shadow.hpp
@@ -0,0 +1,27 @@
+#ifndef OPENMW_MWRENDER_SHADOW_H
+#define OPENMW_MWRENDER_SHADOW_H
+
+#include <osgShadow/LightSpacePerspectiveShadowMap>
+
+namespace MWRender
+{
+    class MWShadow : public osgShadow::LightSpacePerspectiveShadowMapDB
+    {
+    protected:
+        struct ViewData : public LightSpacePerspectiveShadowMapDB::ViewData
+        {
+            virtual void init(MWShadow * st, osgUtil::CullVisitor * cv);
+        };
+
+        virtual ViewDependentShadowTechnique::ViewData * initViewDependentData(osgUtil::CullVisitor *cv, ViewDependentShadowTechnique::ViewData * vd)
+        {
+            MWShadow::ViewData* td = dynamic_cast<MWShadow::ViewData*>(vd);
+            if (!td)
+                td = new MWShadow::ViewData;
+            td->init(this, cv);
+            return td;
+        }
+    };
+}
+
+#endif //OPENMW_MWRENDER_SHADOW_H