1 | /* |
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2 | Bullet Continuous Collision Detection and Physics Library |
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3 | Copyright (c) 2003-2007 Erwin Coumans http://bulletphysics.com |
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4 | |
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5 | This software is provided 'as-is', without any express or implied warranty. |
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6 | In no event will the authors be held liable for any damages arising from the use of this software. |
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7 | Permission is granted to anyone to use this software for any purpose, |
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8 | including commercial applications, and to alter it and redistribute it freely, |
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9 | subject to the following restrictions: |
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10 | |
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11 | 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. |
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12 | 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. |
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13 | 3. This notice may not be removed or altered from any source distribution. |
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14 | */ |
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15 | |
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16 | #include "SpuRaycastTaskProcess.h" |
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17 | |
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18 | |
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19 | SpuRaycastTaskProcess::SpuRaycastTaskProcess(class btThreadSupportInterface* threadInterface, int maxNumOutstandingTasks) |
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20 | :m_threadInterface(threadInterface), |
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21 | m_maxNumOutstandingTasks(maxNumOutstandingTasks) |
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22 | { |
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23 | m_workUnitTaskBuffers = (unsigned char *)0; |
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24 | m_taskBusy.resize(m_maxNumOutstandingTasks); |
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25 | m_spuRaycastTaskDesc.resize(m_maxNumOutstandingTasks); |
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26 | |
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27 | for (int i = 0; i < m_maxNumOutstandingTasks; i++) |
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28 | { |
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29 | m_taskBusy[i] = false; |
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30 | } |
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31 | m_numBusyTasks = 0; |
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32 | m_currentTask = 0; |
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33 | m_currentWorkUnitInTask = 0; |
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34 | |
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35 | m_threadInterface->startSPU(); |
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36 | |
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37 | //printf("sizeof vec_float4: %d\n", sizeof(vec_float4)); |
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38 | //printf("sizeof SpuGatherAndProcessWorkUnitInput: %d\n", sizeof(SpuGatherAndProcessWorkUnitInput)); |
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39 | |
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40 | } |
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41 | |
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42 | SpuRaycastTaskProcess::~SpuRaycastTaskProcess() |
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43 | { |
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44 | |
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45 | if (m_workUnitTaskBuffers != 0) |
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46 | { |
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47 | btAlignedFree(m_workUnitTaskBuffers); |
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48 | m_workUnitTaskBuffers = 0; |
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49 | } |
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50 | |
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51 | m_threadInterface->stopSPU(); |
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52 | } |
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53 | |
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54 | |
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55 | |
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56 | void SpuRaycastTaskProcess::initialize2(void* spuCollisionObjectsWrappers, int numSpuCollisionObjectWrappers) |
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57 | { |
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58 | m_spuCollisionObjectWrappers = spuCollisionObjectsWrappers; |
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59 | m_numSpuCollisionObjectWrappers = numSpuCollisionObjectWrappers; |
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60 | for (int i = 0; i < m_maxNumOutstandingTasks; i++) |
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61 | { |
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62 | m_taskBusy[i] = false; |
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63 | } |
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64 | m_numBusyTasks = 0; |
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65 | m_currentTask = 0; |
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66 | m_currentWorkUnitInTask = 0; |
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67 | |
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68 | #ifdef DEBUG_SpuRaycastTaskProcess |
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69 | m_initialized = true; |
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70 | #endif |
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71 | } |
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72 | |
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73 | |
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74 | void SpuRaycastTaskProcess::issueTask2() |
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75 | { |
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76 | m_taskBusy[m_currentTask] = true; |
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77 | m_numBusyTasks++; |
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78 | |
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79 | SpuRaycastTaskDesc& taskDesc = m_spuRaycastTaskDesc[m_currentTask]; |
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80 | |
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81 | taskDesc.taskId = m_currentTask; |
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82 | m_threadInterface->sendRequest(1, (uint32_t) &taskDesc,m_currentTask); |
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83 | //printf("send thread requested for task %d\n", m_currentTask); |
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84 | // if all tasks busy, wait for spu event to clear the task. |
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85 | if (m_numBusyTasks >= m_maxNumOutstandingTasks) |
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86 | { |
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87 | unsigned int taskId; |
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88 | unsigned int outputSize; |
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89 | |
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90 | for (int i=0;i<m_maxNumOutstandingTasks;i++) |
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91 | { |
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92 | if (m_taskBusy[i]) |
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93 | { |
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94 | taskId = i; |
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95 | break; |
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96 | } |
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97 | } |
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98 | m_threadInterface->waitForResponse(&taskId, &outputSize); |
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99 | |
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100 | //printf("PPU: after issue, received event: %u %d\n", taskId, outputSize); |
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101 | |
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102 | m_taskBusy[taskId] = false; |
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103 | |
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104 | m_numBusyTasks--; |
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105 | } else { |
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106 | //printf("Sent request, not enough busy tasks\n"); |
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107 | } |
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108 | } |
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109 | |
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110 | void SpuRaycastTaskProcess::addWorkToTask(SpuRaycastTaskWorkUnit& workunit) |
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111 | { |
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112 | m_spuRaycastTaskDesc[m_currentTask].workUnits[m_currentWorkUnitInTask] = workunit; |
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113 | m_currentWorkUnitInTask++; |
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114 | if (m_currentWorkUnitInTask == SPU_RAYCAST_WORK_UNITS_PER_TASK) |
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115 | { |
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116 | m_spuRaycastTaskDesc[m_currentTask].numWorkUnits = m_currentWorkUnitInTask; |
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117 | m_spuRaycastTaskDesc[m_currentTask].numSpuCollisionObjectWrappers = m_numSpuCollisionObjectWrappers; |
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118 | m_spuRaycastTaskDesc[m_currentTask].spuCollisionObjectsWrappers = m_spuCollisionObjectWrappers; |
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119 | //printf("Task buffer full, issuing\n"); |
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120 | issueTask2 (); |
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121 | //printf("Returned from issueTask2()\n"); |
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122 | m_currentWorkUnitInTask = 0; |
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123 | |
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124 | // find new task buffer |
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125 | for (int i = 0; i < m_maxNumOutstandingTasks; i++) |
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126 | { |
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127 | if (!m_taskBusy[i]) |
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128 | { |
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129 | m_currentTask = i; |
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130 | //init the task data |
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131 | break; |
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132 | } |
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133 | } |
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134 | //printf("next task = %d\n", m_currentTask); |
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135 | } |
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136 | } |
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137 | |
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138 | |
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139 | void |
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140 | SpuRaycastTaskProcess::flush2() |
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141 | { |
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142 | #ifdef DEBUG_SPU_TASK_SCHEDULING |
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143 | printf("\nSpuRaycastTaskProcess::flush()\n"); |
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144 | #endif //DEBUG_SPU_TASK_SCHEDULING |
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145 | |
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146 | // if there's a partially filled task buffer, submit that task |
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147 | //printf("Flushing... %d remaining\n", m_currentWorkUnitInTask); |
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148 | if (m_currentWorkUnitInTask > 0) |
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149 | { |
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150 | m_spuRaycastTaskDesc[m_currentTask].numWorkUnits = m_currentWorkUnitInTask; |
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151 | m_spuRaycastTaskDesc[m_currentTask].numSpuCollisionObjectWrappers = m_numSpuCollisionObjectWrappers; |
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152 | m_spuRaycastTaskDesc[m_currentTask].spuCollisionObjectsWrappers = m_spuCollisionObjectWrappers; |
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153 | issueTask2(); |
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154 | m_currentWorkUnitInTask = 0; |
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155 | } |
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156 | |
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157 | |
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158 | // all tasks are issued, wait for all tasks to be complete |
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159 | while(m_numBusyTasks > 0) |
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160 | { |
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161 | // Consolidating SPU code |
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162 | unsigned int taskId; |
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163 | unsigned int outputSize; |
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164 | |
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165 | for (int i=0;i<m_maxNumOutstandingTasks;i++) |
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166 | { |
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167 | if (m_taskBusy[i]) |
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168 | { |
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169 | taskId = i; |
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170 | break; |
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171 | } |
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172 | } |
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173 | |
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174 | //printf("Busy tasks... %d\n", m_numBusyTasks); |
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175 | |
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176 | { |
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177 | // SPURS support. |
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178 | m_threadInterface->waitForResponse(&taskId, &outputSize); |
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179 | } |
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180 | |
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181 | //printf("PPU: flushing, received event: %u %d\n", taskId, outputSize); |
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182 | |
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183 | //postProcess(taskId, outputSize); |
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184 | |
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185 | m_taskBusy[taskId] = false; |
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186 | |
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187 | m_numBusyTasks--; |
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188 | } |
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189 | } |
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