From bc0fb12d0a665192d95ae8c5b2517801595ac98a Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Mon, 19 Feb 2007 14:21:01 +0000
Subject: [PATCH] Added option to use osgShadow::ShadowMap technique

---
 examples/osgdepthshadow/GNUmakefile           |  2 +-
 examples/osgdepthshadow/osgdepthshadow.cpp    | 71 ++++++++++++++-----
 .../osgshadowtexture/osgshadowtexture.cpp     | 25 +++++++
 3 files changed, 79 insertions(+), 19 deletions(-)

diff --git a/examples/osgdepthshadow/GNUmakefile b/examples/osgdepthshadow/GNUmakefile
index 022c7cffe..e7ef61032 100644
--- a/examples/osgdepthshadow/GNUmakefile
+++ b/examples/osgdepthshadow/GNUmakefile
@@ -4,7 +4,7 @@ include $(TOPDIR)/Make/makedefs
 CXXFILES =\
 	osgdepthshadow.cpp\
 
-LIBS     += -losgViewer -losgText -losgGA -losgDB -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS) 
+LIBS     += -losgViewer -losgShadow -losgText -losgGA -losgDB -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS) 
 
 INSTFILES = \
 	$(CXXFILES)\
diff --git a/examples/osgdepthshadow/osgdepthshadow.cpp b/examples/osgdepthshadow/osgdepthshadow.cpp
index 29087f7f3..3d1eadca8 100644
--- a/examples/osgdepthshadow/osgdepthshadow.cpp
+++ b/examples/osgdepthshadow/osgdepthshadow.cpp
@@ -21,6 +21,9 @@
 
 #include <osgDB/ReadFile>
 
+#include <osgShadow/ShadowedScene>
+#include <osgShadow/ShadowMap>
+
 #include <iostream>
 
 using namespace osg;
@@ -436,33 +439,65 @@ int main(int argc, char** argv)
         return 1;
     }
 
-    ref_ptr<MatrixTransform> scene = new MatrixTransform;
-    scene->setMatrix(osg::Matrix::rotate(osg::DegreesToRadians(125.0),1.0,0.0,0.0));
-
-    ref_ptr<Group> shadowed_scene = _create_scene();    
-    if (!shadowed_scene.valid()) return 1;
-
-    ref_ptr<MatrixTransform> light_transform = _create_lights();
-    if (!light_transform.valid()) return 1;
-
-    ref_ptr<Group> shadowedScene;
     
-    
-    if (withBaseTexture)
+    if (arguments.read("--sm"))
     {
-        shadowed_scene->getOrCreateStateSet()->setTextureAttributeAndModes( 0, new osg::Texture2D(osgDB::readImageFile("Images/lz.rgb")), osg::StateAttribute::ON);
-        shadowedScene = createShadowedScene(shadowed_scene.get(),light_transform.get(),1);
+        osgShadow::ShadowMap* sm = new osgShadow::ShadowMap;
+        sm->setTextureUnit( withBaseTexture ? 1 : 0 );
+        
+        osg::ref_ptr<osgShadow::ShadowedScene> shadowedScene = new osgShadow::ShadowedScene(sm);
+
+
+        ref_ptr<Group> created_scene = _create_scene();
+        if (!created_scene.valid()) return 1;
+
+        shadowedScene->addChild(_create_scene().get());
+        
+
+        ref_ptr<MatrixTransform> scene = new MatrixTransform;
+        scene->setMatrix(osg::Matrix::rotate(osg::DegreesToRadians(125.0),1.0,0.0,0.0));
+
+        scene->addChild(_create_lights().get());
+        scene->addChild(shadowedScene.get());
+
+        if (withBaseTexture)
+        {
+            scene->getOrCreateStateSet()->setTextureAttributeAndModes( 0, new osg::Texture2D(osgDB::readImageFile("Images/lz.rgb")), osg::StateAttribute::ON);
+        }
+
+        viewer.setSceneData(scene.get());
+
     }
     else
     {
-        shadowedScene = createShadowedScene(shadowed_scene.get(),light_transform.get(),0);
+        ref_ptr<MatrixTransform> scene = new MatrixTransform;
+        scene->setMatrix(osg::Matrix::rotate(osg::DegreesToRadians(125.0),1.0,0.0,0.0));
+
+        ref_ptr<Group> created_scene = _create_scene();
+        if (!created_scene.valid()) return 1;
+
+        ref_ptr<MatrixTransform> light_transform = _create_lights();
+        if (!light_transform.valid()) return 1;
+
+        ref_ptr<Group> shadowedScene;
+
+        if (withBaseTexture)
+        {
+            scene->getOrCreateStateSet()->setTextureAttributeAndModes( 0, new osg::Texture2D(osgDB::readImageFile("Images/lz.rgb")), osg::StateAttribute::ON);
+            shadowedScene = createShadowedScene(created_scene.get(),light_transform.get(),1);
+        }
+        else
+        {
+            shadowedScene = createShadowedScene(created_scene.get(),light_transform.get(),0);
+        }
+
+        scene->addChild(shadowedScene.get());
+
+        viewer.setSceneData(scene.get());
     }
     
     // viewer.setUpViewOnSingleScreen();
 
-    scene->addChild(shadowedScene.get());
-
-    viewer.setSceneData(scene.get());
 
     return viewer.run();
 }
diff --git a/examples/osgshadowtexture/osgshadowtexture.cpp b/examples/osgshadowtexture/osgshadowtexture.cpp
index f04ae0825..a0f480ca9 100644
--- a/examples/osgshadowtexture/osgshadowtexture.cpp
+++ b/examples/osgshadowtexture/osgshadowtexture.cpp
@@ -16,6 +16,7 @@
 #include <osgShadow/ShadowedScene>
 #include <osgShadow/ShadowVolume>
 #include <osgShadow/ShadowTexture>
+#include <osgShadow/ShadowMap>
 
 // include the call which creates the shadowed subgraph.
 #include "CreateShadowedScene.h"
@@ -204,6 +205,30 @@ osg::Node* createModel(osg::ArgumentParser& arguments)
         
         return shadowedScene;
 
+    }
+    else if (arguments.read("--sm"))
+    {
+
+        osgShadow::ShadowedScene* shadowedScene = new osgShadow::ShadowedScene;
+        
+        osg::ref_ptr<osgShadow::ShadowMap> shadowMap = new osgShadow::ShadowMap;
+        shadowedScene->setShadowTechnique(shadowMap.get());
+
+        osg::ref_ptr<osg::LightSource> ls = new osg::LightSource;
+        ls->getLight()->setPosition(osg::Vec4(lightPosition,1.0));
+        
+        shadowedScene->setRecievesShadowTraversalMask(0x1);
+        shadowed->setNodeMask(shadowedScene->getRecievesShadowTraversalMask());
+        
+        shadowedScene->setCastsShadowTraversalMask(0x2);
+        shadower->setNodeMask(shadowedScene->getCastsShadowTraversalMask());
+
+        shadowedScene->addChild(shadower);
+        shadowedScene->addChild(shadowed);
+        shadowedScene->addChild(ls.get());
+        
+        return shadowedScene;
+
     }
     else
     {