Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/OpenGL/OpenGLProgram.cpp @ 2115:de049fd88697 deep-learning

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integration mainline->deep-learning
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 24 Jan 2024 16:44:40 +0100
parents fdb012c86a75 c23eef785569
children 2e050ec85379
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rev   line source
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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) 2017-2024 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2024 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
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29 #include <Logging.h>
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30 #include <OrthancException.h>
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31
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32 #include <cassert>
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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 {
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38 OpenGLProgram::OpenGLProgram(OpenGL::IOpenGLContext& context) :
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39 context_(context),
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40 program_(glCreateProgram())
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41 {
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42 ORTHANC_OPENGL_CHECK("glCreateProgram");
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43
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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(bool checkStatus)
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86 {
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87 //ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glUseProgram");
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88 ORTHANC_OPENGL_CHECK("About to call glUseProgram()");
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89
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90 glUseProgram(program_);
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91
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92 if (checkStatus &&
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93 glGetError() != GL_NO_ERROR)
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94 {
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95 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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96 "Cannot use successfully compiled OpenGL shader");
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97 }
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98
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99 ORTHANC_OPENGL_CHECK("glUseProgram");
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100 }
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101
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102 void OpenGLProgram::CompileShaders(const std::string& vertexCode,
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103 const std::string& fragmentCode)
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104 {
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105 assert(program_ != 0);
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106
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107 OpenGLShader vertexShader(GL_VERTEX_SHADER, vertexCode);
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108 OpenGLShader fragmentShader(GL_FRAGMENT_SHADER, fragmentCode);
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109
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110 glAttachShader(program_, vertexShader.Release());
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111 ORTHANC_OPENGL_CHECK("glAttachShader");
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112 glAttachShader(program_, fragmentShader.Release());
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113 ORTHANC_OPENGL_CHECK("glAttachShader");
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114 glLinkProgram(program_);
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115 ORTHANC_OPENGL_CHECK("glLinkProgram");
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116 glValidateProgram(program_);
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117 ORTHANC_OPENGL_CHECK("glValidateProgram");
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118 }
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119
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120 GLint OpenGLProgram::GetUniformLocation(const std::string& name)
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121 {
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122 GLint location = glGetUniformLocation(program_, name.c_str());
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123 ORTHANC_OPENGL_CHECK("glGetUniformLocation");
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124
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125 if (location == -1)
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126 {
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127 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem,
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128 "Inexistent uniform variable in shader: " + name);
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129 }
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130 else
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131 {
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132 return location;
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133 }
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134 }
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135
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136
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137 GLint OpenGLProgram::GetAttributeLocation(const std::string& name)
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138 {
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139 GLint location = glGetAttribLocation(program_, name.c_str());
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1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
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140 ORTHANC_OPENGL_CHECK("glGetAttribLocation");
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141
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142 if (location == -1)
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143 {
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144 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem,
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145 "Inexistent attribute in shader: " + name);
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146 }
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147 else
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148 {
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149 return location;
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150 }
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151 }
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152 }
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153 }