diff options
author | Sarah Smith <sarah.j.smith@nokia.com> | 2011-03-09 17:08:07 +1000 |
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committer | Sarah Smith <sarah.j.smith@nokia.com> | 2011-03-09 17:43:07 +1000 |
commit | b87a08f5292069facf9b427cb43a675d43578293 (patch) | |
tree | af3efc8960a3e556e15b7b66f81821b01297c366 /3rdparty/assimp/code/OptimizeMeshes.h |
Add files ported from research/qt3d
Fill repo with some of the files from the research/qt3d project. At
present the new project builds under MacOSX. To-dos include getting it
building under linux, windows, harmattan and maemo/meego; updating the
documentation to reflect the new QtQuick focus; and fixing the issues
with private headers.
Diffstat (limited to '3rdparty/assimp/code/OptimizeMeshes.h')
-rw-r--r-- | 3rdparty/assimp/code/OptimizeMeshes.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/3rdparty/assimp/code/OptimizeMeshes.h b/3rdparty/assimp/code/OptimizeMeshes.h new file mode 100644 index 000000000..f7284cccc --- /dev/null +++ b/3rdparty/assimp/code/OptimizeMeshes.h @@ -0,0 +1,187 @@ +/* +Open Asset Import Library (ASSIMP) +---------------------------------------------------------------------- + +Copyright (c) 2006-2010, ASSIMP Development Team +All rights reserved. + +Redistribution and use of this software in source and binary forms, +with or without modification, are permitted provided that the +following conditions are met: + +* Redistributions of source code must retain the above + copyright notice, this list of conditions and the + following disclaimer. + +* Redistributions in binary form must reproduce the above + copyright notice, this list of conditions and the + following disclaimer in the documentation and/or other + materials provided with the distribution. + +* Neither the name of the ASSIMP team, nor the names of its + contributors may be used to endorse or promote products + derived from this software without specific prior + written permission of the ASSIMP Development Team. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +---------------------------------------------------------------------- +*/ + +/** @file OptimizeMeshes.h + * @brief Declares a post processing step to join meshes, if possible + */ +#ifndef AI_OPTIMIZEMESHESPROCESS_H_INC +#define AI_OPTIMIZEMESHESPROCESS_H_INC + +#include "BaseProcess.h" +#include "../include/aiTypes.h" + +struct aiMesh; +class OptimizeMeshesProcessTest; +namespace Assimp { + +// --------------------------------------------------------------------------- +/** @brief Postprocessing step to optimize mesh usage + * + * The implementation looks for meshes that could be joined and joins them. + * Usually this will reduce the number of drawcalls. + * + * @note Instanced meshes are currently not processed. + */ +class ASSIMP_API OptimizeMeshesProcess : public BaseProcess +{ + friend class Importer; + friend class ::OptimizeMeshesProcessTest; + +protected: + /** Constructor to be privately used by Importer */ + OptimizeMeshesProcess(); + + /** Destructor, private as well */ + ~OptimizeMeshesProcess(); + + + /** @brief Internal utility to store additional mesh info + */ + struct MeshInfo + { + MeshInfo() + : instance_cnt (0) + , vertex_format (0) + , output_id (0xffffffff) + {} + + //! Number of times this mesh is referenced + unsigned int instance_cnt; + + //! Vertex format id + unsigned int vertex_format; + + //! Output ID + unsigned int output_id; + }; + +public: + // ------------------------------------------------------------------- + bool IsActive( unsigned int pFlags) const; + + // ------------------------------------------------------------------- + void Execute( aiScene* pScene); + + // ------------------------------------------------------------------- + void SetupProperties(const Importer* pImp); + + + // ------------------------------------------------------------------- + /** @brief Specify whether you want meshes with different + * primitive types to be merged as well. + * + * IsActive() sets this property automatically to true if the + * aiProcess_SortByPType flag is found. + */ + void EnablePrimitiveTypeSorting(bool enable) { + pts = enable; + } + + // Getter + bool IsPrimitiveTypeSortingEnabled () const { + return pts; + } + + + // ------------------------------------------------------------------- + /** @brief Specify a maximum size of a single output mesh. + * + * If a single input mesh already exceeds this limit, it won't + * be splitted. + * @param verts Maximum number of vertices per mesh + * @param faces Maximum number of faces per mesh + */ + void SetPreferredMeshSizeLimit (unsigned int verts, unsigned int faces) + { + max_verts = verts; + max_faces = faces; + } + + +protected: + + // ------------------------------------------------------------------- + /** @brief Do the actual optimization on all meshes of this node + * @param pNode Node we're working with + */ + void ProcessNode( aiNode* pNode); + + // ------------------------------------------------------------------- + /** @brief Returns true if b can be joined with a + * + * @param verts Number of output verts up to now + * @param faces Number of output faces up to now + */ + bool CanJoin ( unsigned int a, unsigned int b, + unsigned int verts, unsigned int faces ); + + // ------------------------------------------------------------------- + /** @brief Find instanced meshes, for the moment we're excluding + * them from all optimizations + */ + void FindInstancedMeshes (aiNode* pNode); + +private: + + //! Scene we're working with + aiScene* mScene; + + //! Per mesh info + std::vector<MeshInfo> meshes; + + //! Next output mesh + aiMesh* mesh; + + //! Output meshes + std::vector<aiMesh*> output; + + //! @see EnablePrimitiveTypeSorting + mutable bool pts; + + //! @see SetPreferredMeshSizeLimit + mutable unsigned int max_verts,max_faces; + + //! Temporary storage + std::vector<aiMesh*> merge_list; +}; + +} // end of namespace Assimp + +#endif // AI_CALCTANGENTSPROCESS_H_INC |