Fixed gcc warnings when casting to reference types

Author: stefanatwork

kernels/bvh/bvh_builder_morton.cpp

@@ -52,7 +52,7 @@ namespace embree
           node->setBounds(i,b);
         }
 
-        BBox3fx result = (BBox3fx&)res;
+        BBox3fx result = (BBox3fx)res;
 #if ROTATE_TREE
         if (N == 4)
         {
@@ -343,7 +343,7 @@ namespace embree
           new (&accel[i]) Object(geomID_,primID);
         }
 
-        BBox3fx box_o = (BBox3fx&)bounds;
+        BBox3fx box_o = (BBox3fx)bounds;
 #if ROTATE_TREE
         if (N == 4)
           box_o.lower.a = current.size();
@@ -387,7 +387,7 @@ namespace embree
           new (&accel[i]) InstancePrimitive(instance, geomID_);
         }
 
-        BBox3fx box_o = (BBox3fx&)bounds;
+        BBox3fx box_o = (BBox3fx)bounds;
 #if ROTATE_TREE
         if (N == 4)
           box_o.lower.a = current.size();
@@ -431,7 +431,7 @@ namespace embree
           new (&accel[i]) InstanceArrayPrimitive(geomID_, primID);
         }
 
-        BBox3fx box_o = (BBox3fx&)bounds;
+        BBox3fx box_o = (BBox3fx)bounds;
 #if ROTATE_TREE
         if (N == 4)
           box_o.lower.a = current.size();

kernels/geometry/grid_soa.h

@@ -58,8 +58,8 @@ namespace embree
       }
 
        /*! returns reference to root */
-      __forceinline       BVH4::NodeRef& root(size_t t = 0)       { return (BVH4::NodeRef&)data[rootOffset + t*sizeof(BVH4::NodeRef)]; }
-      __forceinline const BVH4::NodeRef& root(size_t t = 0) const { return (BVH4::NodeRef&)data[rootOffset + t*sizeof(BVH4::NodeRef)]; }
+      __forceinline       BVH4::NodeRef& root(size_t t = 0)       { return *(BVH4::NodeRef*)&data[rootOffset + t*sizeof(BVH4::NodeRef)]; }
+      __forceinline const BVH4::NodeRef& root(size_t t = 0) const { return *(BVH4::NodeRef*)&data[rootOffset + t*sizeof(BVH4::NodeRef)]; }
 
       /*! returns pointer to BVH array */
       __forceinline       char* bvhData()       { return &data[0]; }