Changeset 7974 for OpenSceneGraph/trunk/src/osgShadow/ShadowMap.cpp

Timestamp:

03/19/08 13:09:20 (5 years ago)

Author:

robert

Message:

From Sebastian Messerschimdt, Added polygon offset controls

Files:

• OpenSceneGraph/trunk/src/osgShadow/ShadowMap.cpp (modified) (7 diffs)

OpenSceneGraph/trunk/src/osgShadow/ShadowMap.cpp

@@ -82 +82 @@
 
 ShadowMap::ShadowMap():
-_baseTextureUnit(0),
+    _baseTextureUnit(0),
     _shadowTextureUnit(1),
     _ambientBias(0.5f,0.5f),
-    _textureSize(1024,1024)
+    _textureSize(1024,1024),
+    _polyOffset(1.0,1.0)
 {
 }
@@ -101 +102 @@
 {
     _shadowTextureUnit = unit;
+}
+
+void ShadowMap::setPolygonOffset(const osg::Vec2& polyOffset)
+{
+    _polyOffset = polyOffset;
 }
 
@@ -210 +216 @@
 #if 1
         // cull front faces so that only backfaces contribute to depth map
+        
 
         osg::ref_ptr<osg::CullFace> cull_face = new osg::CullFace;
@@ -218 +225 @@
         // negative polygonoffset - move the backface nearer to the eye point so that backfaces
         // shadow themselves
-        float factor = -1.0f;
-        float units = -1.0f;
+        float factor = -_polyOffset[0];
+        float units =  -_polyOffset[1];
 
         osg::ref_ptr<osg::PolygonOffset> polygon_offset = new osg::PolygonOffset;
@@ -232 +239 @@
         // negative polygonoffset - move the backface nearer to the eye point
         // so that front faces do not shadow themselves.
-        float factor = 1.0f;
-        float units = 1.0f;
+        float factor = _polyOffset[0];
+        float units =  _polyOffset[1];
 
         osg::ref_ptr<osg::PolygonOffset> polygon_offset = new osg::PolygonOffset;
@@ -328 +335 @@
     osgUtil::RenderStage* orig_rs = cv.getRenderStage();
 
-    // do traversal of shadow receiving scene which does need to be decorated by the shadow map
+    // do traversal of shadow recieving scene which does need to be decorated by the shadow map
     {
         cv.pushStateSet(_stateset.get());
@@ -608 +615 @@
     stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
     stateset->setMode(GL_BLEND,osg::StateAttribute::ON);
-    //stateset->setAttribute(new osg::PolygonOffset(1.0f,1.0f),osg::StateAttribute::ON);
     stateset->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);