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annotate Framework/Viewport/SdlViewport.cpp @ 947:1091b2adeb5a toa2019081001

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Fixed animation frame stopping when returning false + big work on the OpenGL objects to make them lost context-safe + debug code to forcefully tag a context as lost + debug macros
author Benjamin Golinvaux <bgo@osimis.io>
date Sat, 10 Aug 2019 13:07:31 +0200
parents 7a7e4e1f558f
children a7351ad54960
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21 #include "SdlViewport.h"
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22
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23 #include <Core/OrthancException.h>
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24
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25 #include <boost/make_shared.hpp>
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26
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27 namespace OrthancStone
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28 {
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29 SdlOpenGLViewport::SdlOpenGLViewport(const char* title,
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30 unsigned int width,
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31 unsigned int height,
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32 bool allowDpiScaling) :
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33 SdlViewport(title),
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34 context_(title, width, height, allowDpiScaling)
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35 {
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36 compositor_.reset(new OpenGLCompositor(context_, GetScene()));
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37 }
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38
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39 SdlOpenGLViewport::SdlOpenGLViewport(const char* title,
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40 unsigned int width,
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41 unsigned int height,
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42 boost::shared_ptr<Scene2D>& scene,
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43 bool allowDpiScaling) :
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44 SdlViewport(title, scene),
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45 context_(title, width, height, allowDpiScaling)
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46 {
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47 compositor_.reset(new OpenGLCompositor(context_, GetScene()));
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48 }
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49
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50 bool SdlOpenGLViewport::OpenGLContextLost()
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51 {
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52 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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53 }
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54
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55 void SdlOpenGLViewport::DisableCompositor()
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56 {
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57 compositor_.reset(NULL);
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58 }
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59
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60 void SdlOpenGLViewport::RestoreCompositor()
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61 {
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62 // the context must have been restored!
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63 ORTHANC_ASSERT(!context_.IsContextLost());
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64
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65 if (compositor_.get() == NULL)
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66 {
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67 compositor_.reset(new OpenGLCompositor(context_, GetScene()));
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68 }
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69 else
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70 {
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71 std::string windowTitle(SDL_GetWindowTitle(GetWindow().GetObject()));
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72 LOG(WARNING) << "RestoreCompositor() called for \"" << windowTitle << "\" while it was NOT lost! Nothing done.";
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73 }
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74 }
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75
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76 // extern bool Debug_MustContextBeRestored(std::string title);
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77 // extern void Debug_Context_ClearRestoreFlag(std::string title);
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78 // extern void Debug_Context_ClearKillFlag(std::string title);
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79
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80 bool Debug_SdlOpenGLViewport_Refresh_BP = false;
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81
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82 void SdlOpenGLViewport::Refresh()
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83 {
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84 // <DEBUG CODE USED FOR CONTEXT LOSS RESTORING>
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85 // try to restore the context if requested
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86 // Debug_Context_ClearRestoreFlag
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87 // Debug_SdlOpenGLViewport_Refresh_BP = true;
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88 // try
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89 // {
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90 // if (Debug_MustContextBeRestored(GetCanvasIdentifier()))
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91 // {
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92 // // to prevent a bug where the context is both labelled as "to be lost" and "to be restored"
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93 // // (occurs when one is hammering away at the keyboard like there's no tomorrow)
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94 // Debug_Context_ClearKillFlag(GetCanvasIdentifier());
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95 // // this is called manually for loss/restore simulation
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96 // context_.RestoreLostContext();
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97 // RestoreCompositor();
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98 // Debug_Context_ClearRestoreFlag(GetCanvasIdentifier());
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99 // }
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100 // }
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101 // catch (const OpenGLContextLostException& e)
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102 // {
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103 // LOG(ERROR) << "OpenGLContextLostException in SdlOpenGLViewport::Refresh() part 1";
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104 // }
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105 // Debug_SdlOpenGLViewport_Refresh_BP = false;
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106 // </DEBUG CODE USED FOR CONTEXT LOSS RESTORING>
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107
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108 try
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109 {
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110 // the compositor COULD be dead!
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111 if (GetCompositor())
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112 GetCompositor()->Refresh();
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113 }
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114 catch (const OpenGLContextLostException& e)
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115 {
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116 // we need to wait for the "context restored" callback
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117 LOG(WARNING) << "Context " << std::hex << e.context_ << " is lost! Compositor will be disabled.";
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118 DisableCompositor();
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119
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120 // <DEBUG CODE USED FOR CONTEXT LOSS RESTORING>
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121 // in case this was externally triggered...
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122 //Debug_Context_ClearKillFlag(GetCanvasIdentifier());
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123 // </DEBUG CODE USED FOR CONTEXT LOSS RESTORING>
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124 }
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125 catch (...)
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126 {
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127 // something else nasty happened
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128 throw;
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129 }
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130 }
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131
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132
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133
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134
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135
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136 SdlCairoViewport::SdlCairoViewport(const char* title,
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137 unsigned int width,
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138 unsigned int height,
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139 bool allowDpiScaling) :
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140 SdlViewport(title),
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141 window_(title, width, height, false /* enable OpenGL */, allowDpiScaling),
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142 compositor_(GetScene(), width, height)
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143 {
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144 UpdateSdlSurfaceSize(width, height);
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145 }
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146
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147 void SdlCairoViewport::DisableCompositor()
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148 {
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149 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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150 }
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151
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152 void SdlCairoViewport::RestoreCompositor()
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153 {
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154 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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155 }
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156
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157 SdlCairoViewport::~SdlCairoViewport()
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158 {
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159 if (sdlSurface_)
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160 {
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161 SDL_FreeSurface(sdlSurface_);
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162 }
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163 }
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164
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165 void SdlCairoViewport::Refresh()
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166 {
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167 GetCompositor()->Refresh();
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168 window_.Render(sdlSurface_);
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169 }
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170
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171 void SdlCairoViewport::UpdateSize(unsigned int width,
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172 unsigned int height)
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173 {
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174 compositor_.UpdateSize(width, height);
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175 UpdateSdlSurfaceSize(width, height);
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176 Refresh();
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177 }
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178
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179 void SdlCairoViewport::UpdateSdlSurfaceSize(unsigned int width,
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180 unsigned int height)
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181 {
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182 static const uint32_t rmask = 0x00ff0000;
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183 static const uint32_t gmask = 0x0000ff00;
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184 static const uint32_t bmask = 0x000000ff;
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185
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186 sdlSurface_ = SDL_CreateRGBSurfaceFrom((void*)(compositor_.GetCanvas().GetBuffer()), width, height, 32,
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187 compositor_.GetCanvas().GetPitch(), rmask, gmask, bmask, 0);
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188 if (!sdlSurface_)
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189 {
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190 LOG(ERROR) << "Cannot create a SDL surface from a Cairo surface";
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191 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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192 }
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193 }
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194
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195 }