forked from bartvdbraak/blender
8103381ded
* Multithreaded image loading, each thread can load a separate image. * Better multithreading for multiple instanced meshes, different threads can now build BVH's for different meshes, rather than all cooperating on the same mesh. Especially noticeable for dynamic BVH building for the viewport, gave about 2x faster build on 8 core in fairly complex scene with many objects. * The main thread waiting for worker threads can now also work itself, so (num_cores + 1) threads will be working, this supposedly gives better performance on some operating systems, but did not measure performance for this very detailed yet.
116 lines
2.8 KiB
C++
116 lines
2.8 KiB
C++
/*
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* Adapted from code copyright 2009-2010 NVIDIA Corporation
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* Modifications Copyright 2011, Blender Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __BVH_BUILD_H__
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#define __BVH_BUILD_H__
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#include <float.h>
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#include "bvh.h"
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#include "bvh_binning.h"
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#include "util_boundbox.h"
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#include "util_task.h"
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#include "util_vector.h"
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CCL_NAMESPACE_BEGIN
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class BVHBuildTask;
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class BVHParams;
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class InnerNode;
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class Mesh;
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class Object;
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class Progress;
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/* BVH Builder */
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class BVHBuild
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{
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public:
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/* Constructor/Destructor */
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BVHBuild(
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const vector<Object*>& objects,
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vector<int>& prim_index,
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vector<int>& prim_object,
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const BVHParams& params,
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Progress& progress);
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~BVHBuild();
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BVHNode *run();
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protected:
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friend class BVHMixedSplit;
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friend class BVHObjectSplit;
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friend class BVHSpatialSplit;
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friend class BVHBuildTask;
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/* adding references */
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void add_reference_mesh(BoundBox& root, BoundBox& center, Mesh *mesh, int i);
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void add_reference_object(BoundBox& root, BoundBox& center, Object *ob, int i);
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void add_references(BVHRange& root);
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/* building */
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BVHNode *build_node(const BVHRange& range, int level);
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BVHNode *build_node(const BVHObjectBinning& range, int level);
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BVHNode *create_leaf_node(const BVHRange& range);
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BVHNode *create_object_leaf_nodes(const BVHReference *ref, int start, int num);
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/* threads */
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enum { THREAD_TASK_SIZE = 4096 };
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void thread_build_node(InnerNode *node, int child, BVHObjectBinning *range, int level);
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thread_mutex build_mutex;
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/* progress */
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void progress_update();
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/* tree rotations */
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void rotate(BVHNode *node, int max_depth);
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void rotate(BVHNode *node, int max_depth, int iterations);
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/* objects and primitive references */
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vector<Object*> objects;
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vector<BVHReference> references;
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int num_original_references;
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/* output primitive indexes and objects */
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vector<int>& prim_index;
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vector<int>& prim_object;
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/* build parameters */
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BVHParams params;
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/* progress reporting */
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Progress& progress;
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double progress_start_time;
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size_t progress_count;
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size_t progress_total;
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size_t progress_original_total;
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/* spatial splitting */
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float spatial_min_overlap;
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vector<BoundBox> spatial_right_bounds;
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BVHSpatialBin spatial_bins[3][BVHParams::NUM_SPATIAL_BINS];
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/* threads */
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TaskPool task_pool;
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};
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CCL_NAMESPACE_END
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#endif /* __BVH_BUILD_H__ */
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