diff options
Diffstat (limited to 'source/blender/render/intern/raytrace/rayobject_svbvh.cpp')
| -rw-r--r-- | source/blender/render/intern/raytrace/rayobject_svbvh.cpp | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/source/blender/render/intern/raytrace/rayobject_svbvh.cpp b/source/blender/render/intern/raytrace/rayobject_svbvh.cpp new file mode 100644 index 00000000000..1bcffddd0ac --- /dev/null +++ b/source/blender/render/intern/raytrace/rayobject_svbvh.cpp @@ -0,0 +1,134 @@ +/** + * $Id$ + * + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * The Original Code is Copyright (C) 2009 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): André Pinto. + * + * ***** END GPL LICENSE BLOCK ***** + */ +#include "vbvh.h" +#include "svbvh.h" +#include "reorganize.h" + +#define DFS_STACK_SIZE 256 + +struct SVBVHTree +{ + RayObject rayobj; + + SVBVHNode *root; + MemArena *node_arena; + + float cost; + RTBuilder *builder; +}; + + +template<> +void bvh_done<SVBVHTree>(SVBVHTree *obj) +{ + rtbuild_done(obj->builder); + + //TODO find a away to exactly calculate the needed memory + MemArena *arena1 = BLI_memarena_new(BLI_MEMARENA_STD_BUFSIZE); + BLI_memarena_use_malloc(arena1); + + MemArena *arena2 = BLI_memarena_new(BLI_MEMARENA_STD_BUFSIZE); + BLI_memarena_use_malloc(arena2); + BLI_memarena_use_align(arena2, 16); + + //Build and optimize the tree + VBVHNode *root = BuildBinaryVBVH<VBVHNode>(arena1).transform(obj->builder); + reorganize(root); + remove_useless(root, &root); + bvh_refit(root); + + pushup(root); + pushdown(root); + pushup_simd<VBVHNode,4>(root); + + obj->root = Reorganize_SVBVH<VBVHNode>(arena2).transform(root); + + + //Free data + BLI_memarena_free(arena1); + + obj->node_arena = arena2; + obj->cost = 1.0; + + + rtbuild_free( obj->builder ); + obj->builder = NULL; +} + +template<int StackSize> +int intersect(SVBVHTree *obj, Isect* isec) +{ + //TODO renable hint support + if(RE_rayobject_isAligned(obj->root)) + return bvh_node_stack_raycast<SVBVHNode,StackSize,false>( obj->root, isec); + else + return RE_rayobject_intersect( (RayObject*) obj->root, isec ); +} + +template<class Tree> +void bvh_hint_bb(Tree *tree, LCTSHint *hint, float *min, float *max) +{ + //TODO renable hint support + { + hint->size = 0; + hint->stack[hint->size++] = (RayObject*)tree->root; + } +} +/* the cast to pointer function is needed to workarround gcc bug: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11407 */ +template<class Tree, int STACK_SIZE> +RayObjectAPI make_api() +{ + static RayObjectAPI api = + { + (RE_rayobject_raycast_callback) ((int(*)(Tree*,Isect*)) &intersect<STACK_SIZE>), + (RE_rayobject_add_callback) ((void(*)(Tree*,RayObject*)) &bvh_add<Tree>), + (RE_rayobject_done_callback) ((void(*)(Tree*)) &bvh_done<Tree>), + (RE_rayobject_free_callback) ((void(*)(Tree*)) &bvh_free<Tree>), + (RE_rayobject_merge_bb_callback)((void(*)(Tree*,float*,float*)) &bvh_bb<Tree>), + (RE_rayobject_cost_callback) ((float(*)(Tree*)) &bvh_cost<Tree>), + (RE_rayobject_hint_bb_callback) ((void(*)(Tree*,LCTSHint*,float*,float*)) &bvh_hint_bb<Tree>) + }; + + return api; +} + +template<class Tree> +RayObjectAPI* bvh_get_api(int maxstacksize) +{ + static RayObjectAPI bvh_api256 = make_api<Tree,1024>(); + + if(maxstacksize <= 1024) return &bvh_api256; + assert(maxstacksize <= 256); + return 0; +} + +RayObject *RE_rayobject_svbvh_create(int size) +{ + return bvh_create_tree<SVBVHTree,DFS_STACK_SIZE>(size); +} |