Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/OpenGL/OpenGLProgram.cpp @ 2043:f3d756e5503f deep-learning
fix build on wasm
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 10 Feb 2023 09:13:49 +0100 |
parents | 85a20cbfcc04 |
children | 8bb8d9c0cfd0 |
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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) 2017-2022 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
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7 * |
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8 * This program is free software: you can redistribute it and/or |
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9 * modify it under the terms of the GNU Lesser General Public License |
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10 * as published by the Free Software Foundation, either version 3 of |
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11 * the License, or (at your option) any later version. |
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12 * |
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13 * This program is distributed in the hope that it will be useful, but |
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 * Lesser General Public License for more details. |
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17 * |
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18 * You should have received a copy of the GNU Lesser General Public |
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19 * License along with this program. If not, see |
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20 * <http://www.gnu.org/licenses/>. |
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21 **/ |
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22 |
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23 |
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24 #include "OpenGLProgram.h" |
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25 |
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26 #include "OpenGLShader.h" |
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27 #include "IOpenGLContext.h" |
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28 |
1624 | 29 #include <Logging.h> |
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30 #include <OrthancException.h> |
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31 |
1624 | 32 #include <cassert> |
33 | |
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34 namespace OrthancStone |
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35 { |
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36 namespace OpenGL |
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37 { |
1571 | 38 OpenGLProgram::OpenGLProgram(OpenGL::IOpenGLContext& context) : |
1639 | 39 context_(context), |
40 program_(glCreateProgram()) | |
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41 { |
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42 ORTHANC_OPENGL_CHECK("glCreateProgram"); |
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44 if (program_ == 0) |
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45 { |
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46 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, |
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47 "Cannot create an OpenGL program"); |
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48 } |
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49 } |
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50 |
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51 |
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52 OpenGLProgram::~OpenGLProgram() |
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53 { |
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54 try |
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55 { |
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56 if (!context_.IsContextLost()) |
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57 { |
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58 ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glDeleteProgram"); |
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59 assert(program_ != 0); |
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60 glDeleteProgram(program_); |
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61 ORTHANC_OPENGL_CHECK("glDeleteProgram"); |
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62 } |
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63 } |
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64 catch (const Orthanc::OrthancException& e) |
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65 { |
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66 if (e.HasDetails()) |
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67 { |
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68 LOG(ERROR) << "OrthancException in ~OpenGLProgram: " << e.What() << " Details: " << e.GetDetails(); |
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69 } |
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70 else |
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71 { |
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72 LOG(ERROR) << "OrthancException in ~OpenGLProgram: " << e.What(); |
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73 } |
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74 } |
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75 catch (const std::exception& e) |
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76 { |
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77 LOG(ERROR) << "std::exception in ~OpenGLProgram: " << e.what(); |
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78 } |
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79 catch (...) |
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80 { |
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81 LOG(ERROR) << "Unknown exception in ~OpenGLProgram"; |
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82 } |
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83 } |
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84 |
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85 void OpenGLProgram::Use() |
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86 { |
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87 //ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glUseProgram"); |
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88 glUseProgram(program_); |
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89 if (glGetError() != GL_NO_ERROR) |
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90 { |
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91 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, |
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92 "Cannot use successfully compiled OpenGL shader"); |
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93 } |
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94 |
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95 ORTHANC_OPENGL_CHECK("glUseProgram"); |
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96 } |
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97 |
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98 void OpenGLProgram::CompileShaders(const std::string& vertexCode, |
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99 const std::string& fragmentCode) |
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100 { |
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101 assert(program_ != 0); |
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102 |
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103 OpenGLShader vertexShader(GL_VERTEX_SHADER, vertexCode); |
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104 OpenGLShader fragmentShader(GL_FRAGMENT_SHADER, fragmentCode); |
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105 |
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106 glAttachShader(program_, vertexShader.Release()); |
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107 ORTHANC_OPENGL_CHECK("glAttachShader"); |
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108 glAttachShader(program_, fragmentShader.Release()); |
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109 ORTHANC_OPENGL_CHECK("glAttachShader"); |
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110 glLinkProgram(program_); |
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111 ORTHANC_OPENGL_CHECK("glLinkProgram"); |
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112 glValidateProgram(program_); |
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113 ORTHANC_OPENGL_CHECK("glValidateProgram"); |
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114 } |
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115 |
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116 GLint OpenGLProgram::GetUniformLocation(const std::string& name) |
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117 { |
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118 GLint location = glGetUniformLocation(program_, name.c_str()); |
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119 ORTHANC_OPENGL_CHECK("glGetUniformLocation"); |
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120 |
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121 if (location == -1) |
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122 { |
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123 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem, |
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124 "Inexistent uniform variable in shader: " + name); |
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125 } |
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126 else |
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127 { |
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128 return location; |
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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 GLint OpenGLProgram::GetAttributeLocation(const std::string& name) |
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134 { |
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135 GLint location = glGetAttribLocation(program_, name.c_str()); |
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136 ORTHANC_OPENGL_CHECK("glGetAttribLocation"); |
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137 |
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138 if (location == -1) |
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139 { |
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140 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem, |
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141 "Inexistent attribute in shader: " + name); |
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142 } |
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143 else |
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144 { |
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145 return location; |
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146 } |
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147 } |
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148 } |
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149 } |