From 3248f885ecbd3c98e0d27ccef74a9f5d0e0538f9 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Thu, 8 Jul 2004 22:12:49 +0000
Subject: [PATCH] Replaced the custom MyTexGen class with a standard TexGen,
 and utilised the new RenderStage addPositionedTextureAtribute method.

---
 .../osgshadowtexture/CreateShadowedScene.cpp  | 29 ++++---------------
 1 file changed, 5 insertions(+), 24 deletions(-)

diff --git a/examples/osgshadowtexture/CreateShadowedScene.cpp b/examples/osgshadowtexture/CreateShadowedScene.cpp
index 2348ce97a..dbc832394 100644
--- a/examples/osgshadowtexture/CreateShadowedScene.cpp
+++ b/examples/osgshadowtexture/CreateShadowedScene.cpp
@@ -60,28 +60,6 @@ class CreateShadowTextureCullCallback : public osg::NodeCallback
         osg::ref_ptr<osg::StateSet>  _shadowState;
         osg::ref_ptr<osg::StateSet>  _shadowedState;
 
-        // we need this to get round the order dependance
-        // of eye linear tex gen...    
-        class MyTexGen : public TexGen
-        {
-            public:
-
-                void setMatrix(const osg::Matrix& matrix)
-                {
-                    _matrix = matrix;
-                }
-
-                virtual void apply(osg::State& state) const
-                {
-                    glPushMatrix();
-                    glLoadMatrix(_matrix.ptr());
-                    TexGen::apply(state);
-                    glPopMatrix();
-                }
-
-                osg::Matrix _matrix;
-        };
-
 };
 
 void CreateShadowTextureCullCallback::doPreRender(osg::Node& node, osgUtil::CullVisitor& cv)
@@ -219,14 +197,17 @@ void CreateShadowTextureCullCallback::doPreRender(osg::Node& node, osgUtil::Cull
 
     // set up the stateset to decorate the shadower with the shadow texture
     // with the appropriate tex gen coords.
-    MyTexGen* texgen = new MyTexGen;
-    texgen->setMatrix(MV);
+    TexGen* texgen = new TexGen;
+    //texgen->setMatrix(MV);
     texgen->setMode(osg::TexGen::EYE_LINEAR);
     texgen->setPlane(osg::TexGen::S,osg::Plane(MVPT(0,0),MVPT(1,0),MVPT(2,0),MVPT(3,0)));
     texgen->setPlane(osg::TexGen::T,osg::Plane(MVPT(0,1),MVPT(1,1),MVPT(2,1),MVPT(3,1)));
     texgen->setPlane(osg::TexGen::R,osg::Plane(MVPT(0,2),MVPT(1,2),MVPT(2,2),MVPT(3,2)));
     texgen->setPlane(osg::TexGen::Q,osg::Plane(MVPT(0,3),MVPT(1,3),MVPT(2,3),MVPT(3,3)));
 
+    cv.getRenderStage()->addPositionedTextureAttribute(0,new osg::RefMatrix(MV),texgen);
+
+
     _shadowedState->setTextureAttributeAndModes(_unit,_texture.get(),osg::StateAttribute::ON);
     _shadowedState->setTextureAttribute(_unit,texgen);
     _shadowedState->setTextureMode(_unit,GL_TEXTURE_GEN_S,osg::StateAttribute::ON);