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/*
* Adapted from code copyright 2009-2010 NVIDIA Corporation
* Modifications Copyright 2011, Blender Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __BVH2_H__
#define __BVH2_H__
#include "bvh/bvh.h"
#include "bvh/bvh_params.h"
#include "util/util_types.h"
#include "util/util_vector.h"
CCL_NAMESPACE_BEGIN
class BVHNode;
struct BVHStackEntry;
class BVHParams;
class BoundBox;
class LeafNode;
class Object;
class Progress;
#define BVH_NODE_SIZE 4
#define BVH_NODE_LEAF_SIZE 1
#define BVH_UNALIGNED_NODE_SIZE 7
/* BVH2
*
* Typical BVH with each node having two children.
*/
class BVH2 : public BVH {
protected:
/* constructor */
friend class BVH;
BVH2(const BVHParams& params, const vector<Object*>& objects);
/* pack */
void pack_nodes(const BVHNode *root);
void pack_leaf(const BVHStackEntry& e,
const LeafNode *leaf);
void pack_inner(const BVHStackEntry& e,
const BVHStackEntry& e0,
const BVHStackEntry& e1);
void pack_aligned_inner(const BVHStackEntry& e,
const BVHStackEntry& e0,
const BVHStackEntry& e1);
void pack_aligned_node(int idx,
const BoundBox& b0,
const BoundBox& b1,
int c0, int c1,
uint visibility0, uint visibility1);
void pack_unaligned_inner(const BVHStackEntry& e,
const BVHStackEntry& e0,
const BVHStackEntry& e1);
void pack_unaligned_node(int idx,
const Transform& aligned_space0,
const Transform& aligned_space1,
const BoundBox& b0,
const BoundBox& b1,
int c0, int c1,
uint visibility0, uint visibility1);
/* refit */
void refit_nodes();
void refit_node(int idx, bool leaf, BoundBox& bbox, uint& visibility);
};
CCL_NAMESPACE_END
#endif /* __BVH2_H__ */
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