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annotate Applications/Sdl/SdlOpenGLWindow.cpp @ 595:6e471e6cf09b

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CairoPolylineRenderer, SdlOpenGLWindow
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 26 Apr 2019 15:11:11 +0200
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children 412a2d01a189
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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
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22 #include "SdlOpenGLWindow.h"
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23
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24 #if ORTHANC_ENABLE_SDL == 1
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25
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26 #include <Core/OrthancException.h>
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27
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28 namespace OrthancStone
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29 {
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30 SdlOpenGLWindow::SdlOpenGLWindow(const char* title,
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31 unsigned int width,
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32 unsigned int height) :
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33 window_(title, width, height, true /* enable OpenGL */)
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34 {
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35 context_ = SDL_GL_CreateContext(window_.GetObject());
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36
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37 if (context_ == NULL)
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38 {
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39 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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40 "Cannot initialize OpenGL");
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41 }
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42 }
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43
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44
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45 SdlOpenGLWindow::~SdlOpenGLWindow()
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46 {
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47 SDL_GL_DeleteContext(context_);
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48 }
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50
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51 void SdlOpenGLWindow::MakeCurrent()
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52 {
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53 if (SDL_GL_MakeCurrent(window_.GetObject(), context_) != 0)
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54 {
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55 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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56 "Cannot set current OpenGL context");
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57 }
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58
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59 // This makes our buffer swap syncronized with the monitor's vertical refresh
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60 SDL_GL_SetSwapInterval(1);
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61 }
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62
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63
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64 void SdlOpenGLWindow::SwapBuffer()
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65 {
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66 // Swap our buffer to display the current contents of buffer on screen
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67 SDL_GL_SwapWindow(window_.GetObject());
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68 }
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70
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71 unsigned int SdlOpenGLWindow::GetCanvasWidth()
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72 {
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73 int w = 0;
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74 SDL_GL_GetDrawableSize(window_.GetObject(), &w, NULL);
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75 return static_cast<unsigned int>(w);
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76 }
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78
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79 unsigned int SdlOpenGLWindow::GetCanvasHeight()
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80 {
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81 int h = 0;
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82 SDL_GL_GetDrawableSize(window_.GetObject(), NULL, &h);
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83 return static_cast<unsigned int>(h);
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84 }
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85 }
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86
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87 #endif