1 | #ifndef _RenderSimulator_h__
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2 | #define _RenderSimulator_h__
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3 |
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4 | #include "common.h"
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5 | #include "Statistics.h"
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6 |
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7 | class BspTree;
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8 | class KdTree;
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9 | class ViewCell;
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10 | class KdLeaf;
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11 |
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12 | class SimulationStatistics: public StatisticsBase |
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13 | { |
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14 | public: |
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15 | /// view cell with the biggest "cost" |
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16 | float maxCost; |
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17 | /// view cell with the minimal "cost" |
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18 | float minCost; |
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19 | /// average render time |
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20 | float avgRenderTime; |
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21 | /// average render time with the overhead when crossing view cells |
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22 | float avgRtWithoutOverhead; |
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23 | |
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24 | void Reset() |
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25 | { |
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26 | maxCost = 0; |
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27 | minCost = 999999; |
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28 | avgRenderTime = 0; |
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29 | avgRtWithoutOverhead = 0; |
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30 | } |
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31 | |
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32 | void Print(ostream &app) const; |
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33 | |
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34 | friend ostream &operator<<(ostream &s, const SimulationStatistics &stat) |
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35 | { |
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36 | stat.Print(s); |
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37 | return s; |
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38 | } |
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39 | |
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40 | SimulationStatistics() |
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41 | { |
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42 | Reset(); |
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43 | } |
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44 | };
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45 |
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46 | /** Simulated rendering using a simple render heuristics. Used to evaluate the |
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47 | quality of the view cell partition. |
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48 | */ |
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49 | class RenderSimulator |
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50 | { |
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51 | |
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52 | public: |
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53 | RenderSimulator(); |
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54 | /** Constructor taking the estimated render cost, |
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55 | the view cell overhead, |
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56 | and the average move speed of the player into account. |
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57 | */ |
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58 | RenderSimulator(float objRendercost, float vcOverhead, float moveSpeed); |
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59 | |
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60 | /** Simulates rendering of the view cells. |
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61 | @returns the statistics of the simulation. |
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62 | */ |
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63 | virtual SimulationStatistics SimulateRendering() = 0; |
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64 | |
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65 | /** Sets estimated render time for a single object in the PVS. |
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66 | */ |
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67 | void SetObjectRenderCost(const float objRenderCost); |
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68 | |
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69 | /** Contant overhead for crossing a view cell border. |
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70 | */ |
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71 | void SetVcOverhead(const float vcOverhead); |
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72 | |
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73 | /** Average move speed of the player during rendering. |
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74 | */ |
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75 | void SetMoveSpeed(const float moveSpeed); |
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76 | |
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77 | |
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78 | protected: |
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79 | |
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80 | /// render time for single object of the PVS |
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81 | float mObjRenderCost; |
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82 | /// const overhead for crossing a view cell border |
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83 | float mVcOverhead; |
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84 | /// move speed of player |
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85 | float mMoveSpeed; |
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86 | }; |
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87 | |
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88 | class BspRenderSimulator: public RenderSimulator |
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89 | { |
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90 | public: |
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91 | BspRenderSimulator(BspTree *bspTree); |
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92 | |
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93 | BspRenderSimulator(float objRenderCost, |
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94 | float vcOverhead, |
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95 | float moveSpeed, |
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96 | BspTree *bspTree); |
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97 | |
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98 | SimulationStatistics SimulateRendering(); |
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99 | |
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100 | protected: |
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101 | /** Simulates rendering of the pvs of one view cell, with given rendering time for an object. |
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102 | @param viewCell the view cell holding the Pvs |
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103 | @param objRenderTime estimated render time for one object of the Pvs |
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104 | */ |
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105 | Real RenderPvs(ViewCell &viewCell, const float objRenderTime) const; |
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106 | |
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107 | BspTree *mBspTree; |
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108 | }; |
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109 | |
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110 | class KdRenderSimulator: public RenderSimulator |
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111 | { |
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112 | public: |
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113 | KdRenderSimulator(KdTree *kdTree); |
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114 | |
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115 | KdRenderSimulator(float objRenderCost, |
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116 | float vcOverhead, |
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117 | float moveSpeed, |
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118 | KdTree *kdTree); |
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119 | SimulationStatistics SimulateRendering();
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120 | |
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121 | protected: |
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122 | |
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123 | Real RenderPvs(KdLeaf *leaf, float objRenderTime) const; |
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124 | |
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125 | KdTree *mKdTree; |
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126 | };
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127 |
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128 | #endif // RenderSimulator
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