Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2D/OpenGLCompositor.cpp @ 1574:fb5e620430ae
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 21 Sep 2020 18:29:53 +0200 |
| parents | 85e117739eca |
| children | 92fca2b3ba3d |
| rev | line source |
|---|---|
| 594 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 594 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
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16 * |
| 594 | 17 * You should have received a copy of the GNU Affero General Public License |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 #include "OpenGLCompositor.h" | |
| 22 | |
| 23 #include "Internals/OpenGLAdvancedPolylineRenderer.h" | |
| 24 #include "Internals/OpenGLBasicPolylineRenderer.h" | |
| 25 #include "Internals/OpenGLColorTextureRenderer.h" | |
| 26 #include "Internals/OpenGLFloatTextureRenderer.h" | |
| 27 #include "Internals/OpenGLInfoPanelRenderer.h" | |
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28 #include "Internals/OpenGLLookupTableTextureRenderer.h" |
| 594 | 29 #include "Internals/OpenGLTextRenderer.h" |
| 30 | |
| 31 namespace OrthancStone | |
| 32 { | |
| 33 class OpenGLCompositor::Font : public boost::noncopyable | |
| 34 { | |
| 35 private: | |
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36 std::unique_ptr<GlyphTextureAlphabet> alphabet_; |
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37 std::unique_ptr<OpenGL::OpenGLTexture> texture_; |
| 594 | 38 |
| 39 public: | |
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40 Font(OpenGL::IOpenGLContext& context, const GlyphBitmapAlphabet& dict) |
| 594 | 41 { |
| 42 alphabet_.reset(new GlyphTextureAlphabet(dict)); | |
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43 texture_.reset(new OpenGL::OpenGLTexture(context)); |
| 594 | 44 |
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45 std::unique_ptr<Orthanc::ImageAccessor> bitmap(alphabet_->ReleaseTexture()); |
| 594 | 46 texture_->Load(*bitmap, true /* enable linear interpolation */); |
| 47 } | |
| 48 | |
| 49 OpenGL::OpenGLTexture& GetTexture() const | |
| 50 { | |
| 51 assert(texture_.get() != NULL); | |
| 52 return *texture_; | |
| 53 } | |
| 54 | |
| 55 const GlyphTextureAlphabet& GetAlphabet() const | |
| 56 { | |
| 57 assert(alphabet_.get() != NULL); | |
| 58 return *alphabet_; | |
| 59 } | |
| 60 }; | |
| 61 | |
| 62 const OpenGLCompositor::Font* OpenGLCompositor::GetFont(size_t fontIndex) const | |
| 63 { | |
| 64 Fonts::const_iterator found = fonts_.find(fontIndex); | |
| 65 | |
| 66 if (found == fonts_.end()) | |
| 67 { | |
| 68 return NULL; // Unknown font, nothing should be drawn | |
| 69 } | |
| 70 else | |
| 71 { | |
| 72 assert(found->second != NULL); | |
| 73 return found->second; | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 Internals::CompositorHelper::ILayerRenderer* OpenGLCompositor::Create(const ISceneLayer& layer) | |
| 78 { | |
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79 if (!context_.IsContextLost()) |
| 594 | 80 { |
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81 switch (layer.GetType()) |
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82 { |
| 594 | 83 case ISceneLayer::Type_InfoPanel: |
| 84 return new Internals::OpenGLInfoPanelRenderer | |
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85 (context_, colorTextureProgram_, dynamic_cast<const InfoPanelSceneLayer&>(layer)); |
| 594 | 86 |
| 87 case ISceneLayer::Type_ColorTexture: | |
| 88 return new Internals::OpenGLColorTextureRenderer | |
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89 (context_, colorTextureProgram_, dynamic_cast<const ColorTextureSceneLayer&>(layer)); |
| 594 | 90 |
| 91 case ISceneLayer::Type_FloatTexture: | |
| 92 return new Internals::OpenGLFloatTextureRenderer | |
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93 (context_, floatTextureProgram_, dynamic_cast<const FloatTextureSceneLayer&>(layer)); |
| 594 | 94 |
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95 case ISceneLayer::Type_LookupTableTexture: |
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96 return new Internals::OpenGLLookupTableTextureRenderer |
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97 (context_, colorTextureProgram_, dynamic_cast<const LookupTableTextureSceneLayer&>(layer)); |
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98 |
| 594 | 99 case ISceneLayer::Type_Polyline: |
| 100 return new Internals::OpenGLAdvancedPolylineRenderer | |
| 1571 | 101 (context_, linesProgram_, dynamic_cast<const PolylineSceneLayer&>(layer)); |
| 594 | 102 //return new Internals::OpenGLBasicPolylineRenderer(context_, dynamic_cast<const PolylineSceneLayer&>(layer)); |
| 103 | |
| 104 case ISceneLayer::Type_Text: | |
| 105 { | |
| 106 const TextSceneLayer& l = dynamic_cast<const TextSceneLayer&>(layer); | |
| 107 const Font* font = GetFont(l.GetFontIndex()); | |
| 108 if (font == NULL) | |
| 109 { | |
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110 LOG(WARNING) << "There is no font at index " << l.GetFontIndex(); |
| 594 | 111 return NULL; |
| 112 } | |
| 113 else | |
| 114 { | |
| 115 return new Internals::OpenGLTextRenderer | |
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116 (context_, textProgram_, font->GetAlphabet(), font->GetTexture(), l); |
| 594 | 117 } |
| 118 } | |
| 119 | |
| 120 default: | |
| 121 return NULL; | |
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122 } |
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123 } |
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124 else |
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125 { |
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126 // context is lost. returning null. |
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127 return NULL; |
| 594 | 128 } |
| 129 } | |
| 130 | |
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131 OpenGLCompositor::OpenGLCompositor(OpenGL::IOpenGLContext& context) : |
| 594 | 132 context_(context), |
| 133 colorTextureProgram_(context), | |
| 134 floatTextureProgram_(context), | |
| 135 linesProgram_(context), | |
| 136 textProgram_(context), | |
| 137 canvasWidth_(0), | |
| 138 canvasHeight_(0) | |
| 139 { | |
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140 if (!context_.IsContextLost()) |
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141 { |
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142 canvasWidth_ = context_.GetCanvasWidth(); |
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143 canvasHeight_ = context_.GetCanvasHeight(); |
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144 } |
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145 |
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146 ResetScene(); |
| 594 | 147 } |
| 148 | |
| 149 OpenGLCompositor::~OpenGLCompositor() | |
| 150 { | |
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151 if (!context_.IsContextLost()) |
| 594 | 152 { |
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153 try |
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154 { |
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155 try |
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156 { |
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157 context_.MakeCurrent(); // this can throw if context lost! |
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158 } |
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159 catch (...) |
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160 { |
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161 LOG(ERROR) << "context_.MakeCurrent() failed in OpenGLCompositor::~OpenGLCompositor()!"; |
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162 } |
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163 |
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164 for (Fonts::iterator it = fonts_.begin(); it != fonts_.end(); ++it) |
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165 { |
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166 try |
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167 { |
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168 |
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169 assert(it->second != NULL); |
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170 delete it->second; |
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171 } |
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172 catch (...) |
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173 { |
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174 LOG(ERROR) << "Exception thrown while deleting OpenGL-based font!"; |
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175 } |
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176 } |
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177 } |
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178 catch (...) |
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179 { |
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180 // logging threw an exception! |
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181 } |
| 594 | 182 } |
| 183 } | |
| 184 | |
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185 void OpenGLCompositor::Refresh(const Scene2D& scene) |
| 594 | 186 { |
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187 if (!context_.IsContextLost()) |
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188 { |
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189 context_.MakeCurrent(); // this can throw if context lost! |
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190 canvasWidth_ = context_.GetCanvasWidth(); |
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191 canvasHeight_ = context_.GetCanvasHeight(); |
| 594 | 192 |
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193 glViewport(0, 0, canvasWidth_, canvasHeight_); |
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194 glClearColor(0, 0, 0, 1); |
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195 glClear(GL_COLOR_BUFFER_BIT); |
| 594 | 196 |
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197 helper_->Refresh(scene, canvasWidth_, canvasHeight_); |
| 594 | 198 |
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199 context_.SwapBuffer(); |
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200 } |
| 594 | 201 } |
| 202 | |
| 203 void OpenGLCompositor::SetFont(size_t index, | |
| 204 const GlyphBitmapAlphabet& dict) | |
| 205 { | |
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206 if (!context_.IsContextLost()) |
| 594 | 207 { |
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208 context_.MakeCurrent(); // this can throw if context lost |
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209 |
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210 std::unique_ptr<Font> font(new Font(context_, dict)); |
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211 |
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212 Fonts::iterator found = fonts_.find(index); |
| 594 | 213 |
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214 if (found == fonts_.end()) |
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215 { |
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216 fonts_[index] = font.release(); |
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217 } |
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218 else |
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219 { |
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220 assert(found->second != NULL); |
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221 delete found->second; |
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222 |
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223 found->second = font.release(); |
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224 } |
| 594 | 225 } |
| 226 } | |
| 227 | |
| 228 #if ORTHANC_ENABLE_LOCALE == 1 | |
| 229 void OpenGLCompositor::SetFont(size_t index, | |
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230 const std::string& ttf, |
| 594 | 231 unsigned int fontSize, |
| 232 Orthanc::Encoding codepage) | |
| 233 { | |
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234 if (!context_.IsContextLost()) |
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235 { |
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236 FontRenderer renderer; |
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237 renderer.LoadFont(ttf, fontSize); |
| 594 | 238 |
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239 GlyphBitmapAlphabet dict; |
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240 dict.LoadCodepage(renderer, codepage); |
| 594 | 241 |
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242 SetFont(index, dict); |
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243 } |
| 594 | 244 } |
| 245 #endif | |
|
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246 |
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247 |
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248 void OpenGLCompositor::RefreshCanvasSize() |
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249 { |
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250 if (!context_.IsContextLost()) |
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251 { |
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252 context_.MakeCurrent(); // this can throw if context lost! |
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253 context_.RefreshCanvasSize(); // Difference with Refresh(scene) |
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254 canvasWidth_ = context_.GetCanvasWidth(); |
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255 canvasHeight_ = context_.GetCanvasHeight(); |
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256 } |
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257 } |
| 594 | 258 } |