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 | class VspKdTree;
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12 | class VspBspTree;
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13 |
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14 | class SimulationStatistics: public StatisticsBase |
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15 | { |
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16 | public: |
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17 | /// view cell with the biggest "cost" |
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18 | float maxCost; |
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19 | /// view cell with the minimal "cost" |
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20 | float minCost; |
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21 | /// average render time |
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22 | float avgRenderTime; |
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23 | /// average render time with the overhead when crossing view cells |
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24 | float avgRtWithoutOverhead; |
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25 | |
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26 | void Reset() |
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27 | { |
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28 | maxCost = 0; |
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29 | minCost = 999999; |
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30 | avgRenderTime = 0; |
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31 | avgRtWithoutOverhead = 0; |
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32 | } |
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33 | |
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34 | void Print(ostream &app) const; |
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35 | |
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36 | friend ostream &operator<<(ostream &s, const SimulationStatistics &stat) |
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37 | { |
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38 | stat.Print(s); |
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39 | return s; |
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40 | } |
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41 | |
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42 | SimulationStatistics() |
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43 | { |
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44 | Reset(); |
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45 | } |
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46 | };
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47 |
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48 | /** Simulated rendering using a simple render heuristics. Used to evaluate the |
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49 | quality of the view cell partition. |
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50 | */ |
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51 | class RenderSimulator |
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52 | { |
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53 | |
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54 | public: |
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55 | RenderSimulator(); |
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56 | /** Constructor taking the estimated render cost, |
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57 | the view cell overhead, |
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58 | and the average move speed of the player into account. |
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59 | */ |
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60 | RenderSimulator(float objRendercost, float vcOverhead, float moveSpeed); |
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61 | |
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62 | /** Simulates rendering of the view cells. |
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63 | @returns the statistics of the simulation. |
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64 | */ |
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65 | virtual SimulationStatistics SimulateRendering() = 0; |
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66 | |
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67 | /** Sets estimated render time for a single object in the PVS. |
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68 | */ |
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69 | void SetObjectRenderCost(const float objRenderCost); |
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70 | |
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71 | /** Contant overhead for crossing a view cell border. |
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72 | */ |
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73 | void SetVcOverhead(const float vcOverhead); |
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74 | |
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75 | /** Average move speed of the player during rendering. |
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76 | */ |
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77 | void SetMoveSpeed(const float moveSpeed); |
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78 | |
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79 | |
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80 | protected: |
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81 | |
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82 | /// render time for single object of the PVS |
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83 | float mObjRenderCost; |
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84 | /// const overhead for crossing a view cell border |
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85 | float mVcOverhead; |
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86 | /// move speed of player |
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87 | float mMoveSpeed; |
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88 | }; |
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89 | |
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90 | class BspRenderSimulator: public RenderSimulator |
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91 | { |
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92 | public: |
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93 | BspRenderSimulator(BspTree *bspTree); |
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94 | |
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95 | BspRenderSimulator(float objRenderCost, |
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96 | float vcOverhead, |
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97 | float moveSpeed, |
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98 | BspTree *bspTree); |
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99 | |
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100 | SimulationStatistics SimulateRendering(); |
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101 | |
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102 | protected: |
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103 | /** Simulates rendering of the pvs of one view cell, with given rendering time for an object. |
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104 | @param viewCell the view cell holding the Pvs |
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105 | @param objRenderTime estimated render time for one object of the Pvs |
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106 | */ |
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107 | Real RenderPvs(ViewCell &viewCell, const float objRenderTime) const; |
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108 | |
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109 | private: |
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110 | BspTree *mBspTree; |
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111 | }; |
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112 | |
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113 | class VspBspRenderSimulator: public RenderSimulator |
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114 | { |
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115 | public: |
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116 | VspBspRenderSimulator(VspBspTree *vspBspTree); |
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117 | |
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118 | VspBspRenderSimulator(float objRenderCost, |
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119 | float vcOverhead, |
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120 | float moveSpeed, |
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121 | VspBspTree *vspBspTree); |
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122 | |
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123 | SimulationStatistics SimulateRendering(); |
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124 | |
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125 | protected: |
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126 | /** Simulates rendering of the pvs of one view cell, with given rendering time for an object. |
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127 | @param viewCell the view cell holding the Pvs |
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128 | @param objRenderTime estimated render time for one object of the Pvs |
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129 | */ |
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130 | Real RenderPvs(ViewCell &viewCell, const float objRenderTime) const; |
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131 | |
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132 | private: |
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133 | VspBspTree *mVspBspTree; |
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134 | }; |
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135 | |
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136 | class KdRenderSimulator: public RenderSimulator |
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137 | { |
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138 | public: |
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139 | KdRenderSimulator(KdTree *kdTree); |
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140 | |
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141 | KdRenderSimulator(float objRenderCost, |
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142 | float vcOverhead, |
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143 | float moveSpeed, |
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144 | KdTree *kdTree); |
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145 | SimulationStatistics SimulateRendering();
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146 | |
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147 | protected: |
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148 | |
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149 | Real RenderPvs(KdLeaf *leaf, float objRenderTime) const; |
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150 | |
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151 | KdTree *mKdTree; |
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152 | };
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153 |
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154 | class VspKdRenderSimulator: public RenderSimulator |
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155 | { |
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156 | public: |
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157 | VspKdRenderSimulator(VspKdTree *vspKdTree); |
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158 | |
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159 | VspKdRenderSimulator(float objRenderCost, |
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160 | float vcOverhead, |
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161 | float moveSpeed, |
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162 | VspKdTree *vspKdTree); |
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163 | |
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164 | SimulationStatistics SimulateRendering(); |
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165 | |
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166 | protected: |
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167 | /** Simulates rendering of the pvs of one view cell, with given rendering time for an object. |
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168 | @param viewCell the view cell holding the Pvs |
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169 | @param objRenderTime estimated render time for one object of the Pvs |
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170 | */ |
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171 | Real RenderPvs(ViewCell &viewCell, const float objRenderTime) const; |
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172 | |
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173 | private: |
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174 | VspKdTree *mVspKdTree; |
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175 | };
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176 |
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177 | #endif // RenderSimulator
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