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1 /*
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2 Open Asset Import Library (assimp)
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3 ----------------------------------------------------------------------
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4
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5 Copyright (c) 2006-2012, assimp team
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6 All rights reserved.
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7
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8 Redistribution and use of this software in source and binary forms,
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9 with or without modification, are permitted provided that the
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10 following conditions are met:
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11
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12 * Redistributions of source code must retain the above
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13 copyright notice, this list of conditions and the
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14 following disclaimer.
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15
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16 * Redistributions in binary form must reproduce the above
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17 copyright notice, this list of conditions and the
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18 following disclaimer in the documentation and/or other
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19 materials provided with the distribution.
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20
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21 * Neither the name of the assimp team, nor the names of its
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22 contributors may be used to endorse or promote products
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23 derived from this software without specific prior
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24 written permission of the assimp team.
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25
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26 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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27 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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28 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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29 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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30 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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31 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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32 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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33 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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34 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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35 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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36 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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37
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38 ----------------------------------------------------------------------
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39 */
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40
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41 /** @file Defines a post processing step to reorder faces for
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42 better cache locality*/
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43 #ifndef AI_IMPROVECACHELOCALITY_H_INC
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44 #define AI_IMPROVECACHELOCALITY_H_INC
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45
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46 #include "BaseProcess.h"
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47 #include "assimp/types.h"
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48
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49 struct aiMesh;
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50
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51 namespace Assimp
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52 {
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53
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54 // ---------------------------------------------------------------------------
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55 /** The ImproveCacheLocalityProcess reorders all faces for improved vertex
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56 * cache locality. It tries to arrange all faces to fans and to render
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57 * faces which share vertices directly one after the other.
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58 *
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59 * @note This step expects triagulated input data.
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60 */
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61 class ImproveCacheLocalityProcess : public BaseProcess
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62 {
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63 public:
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64
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65 ImproveCacheLocalityProcess();
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66 ~ImproveCacheLocalityProcess();
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67
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68 public:
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69
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70 // -------------------------------------------------------------------
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71 // Check whether the pp step is active
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72 bool IsActive( unsigned int pFlags) const;
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73
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74 // -------------------------------------------------------------------
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75 // Executes the pp step on a given scene
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76 void Execute( aiScene* pScene);
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77
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78 // -------------------------------------------------------------------
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79 // Configures the pp step
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80 void SetupProperties(const Importer* pImp);
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81
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82 protected:
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83 // -------------------------------------------------------------------
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84 /** Executes the postprocessing step on the given mesh
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85 * @param pMesh The mesh to process.
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86 * @param meshNum Index of the mesh to process
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87 */
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88 float ProcessMesh( aiMesh* pMesh, unsigned int meshNum);
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89
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90 private:
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91 //! Configuration parameter: specifies the size of the cache to
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92 //! optimize the vertex data for.
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93 unsigned int configCacheDepth;
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94 };
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95
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96 } // end of namespace Assimp
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97
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98 #endif // AI_IMPROVECACHELOCALITY_H_INC
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