Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/OpenGL/OpenGLProgram.cpp @ 1598:8563ea5d8ae4

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relicensing some files, cf. osimis bm26 and chu agreement on 2020-05-20
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 26 Oct 2020 20:49:28 +0100
parents 4fb8fdf03314
children 59f95b9ea858
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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) 2017-2020 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 Lesser 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 * Lesser 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 Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #include "OpenGLProgram.h"
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24
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25 #include "OpenGLShader.h"
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26 #include "IOpenGLContext.h"
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27
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28 #include <OrthancException.h>
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29
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30 namespace OrthancStone
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31 {
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32 namespace OpenGL
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33 {
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34 OpenGLProgram::OpenGLProgram(OpenGL::IOpenGLContext& context) :
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35 context_(context)
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36 {
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37 program_ = glCreateProgram();
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38 ORTHANC_OPENGL_CHECK("glCreateProgram");
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39
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40 if (program_ == 0)
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41 {
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42 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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43 "Cannot create an OpenGL program");
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44 }
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45 }
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48 OpenGLProgram::~OpenGLProgram()
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49 {
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50 try
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51 {
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52 if (!context_.IsContextLost())
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53 {
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54 ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glDeleteProgram");
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55 assert(program_ != 0);
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56 glDeleteProgram(program_);
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57 ORTHANC_OPENGL_CHECK("glDeleteProgram");
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58 }
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59 }
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60 catch (const Orthanc::OrthancException& e)
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61 {
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62 if (e.HasDetails())
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63 {
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64 LOG(ERROR) << "OrthancException in ~OpenGLProgram: " << e.What() << " Details: " << e.GetDetails();
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65 }
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66 else
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67 {
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68 LOG(ERROR) << "OrthancException in ~OpenGLProgram: " << e.What();
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69 }
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70 }
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71 catch (const std::exception& e)
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72 {
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73 LOG(ERROR) << "std::exception in ~OpenGLProgram: " << e.what();
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74 }
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75 catch (...)
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76 {
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77 LOG(ERROR) << "Unknown exception in ~OpenGLProgram";
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78 }
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79 }
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80
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81 void OpenGLProgram::Use()
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82 {
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83 //ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glUseProgram");
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84 glUseProgram(program_);
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85 ORTHANC_OPENGL_CHECK("glUseProgram");
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86 }
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87
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88 void OpenGLProgram::CompileShaders(const std::string& vertexCode,
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89 const std::string& fragmentCode)
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90 {
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91 assert(program_ != 0);
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92
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93 OpenGLShader vertexShader(GL_VERTEX_SHADER, vertexCode);
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94 OpenGLShader fragmentShader(GL_FRAGMENT_SHADER, fragmentCode);
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95
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96 glAttachShader(program_, vertexShader.Release());
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97 ORTHANC_OPENGL_CHECK("glAttachShader");
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98 glAttachShader(program_, fragmentShader.Release());
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99 ORTHANC_OPENGL_CHECK("glAttachShader");
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100 glLinkProgram(program_);
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101 ORTHANC_OPENGL_CHECK("glLinkProgram");
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102 glValidateProgram(program_);
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103 ORTHANC_OPENGL_CHECK("glValidateProgram");
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104 }
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105
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106 GLint OpenGLProgram::GetUniformLocation(const std::string& name)
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107 {
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108 GLint location = glGetUniformLocation(program_, name.c_str());
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109 ORTHANC_OPENGL_CHECK("glGetUniformLocation");
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110
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111 if (location == -1)
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112 {
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113 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem,
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114 "Inexistent uniform variable in shader: " + name);
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115 }
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116 else
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117 {
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118 return location;
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119 }
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120 }
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121
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122
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123 GLint OpenGLProgram::GetAttributeLocation(const std::string& name)
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124 {
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125 GLint location = glGetAttribLocation(program_, name.c_str());
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126 ORTHANC_OPENGL_CHECK("glGetAttribLocation");
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127
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128 if (location == -1)
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129 {
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130 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem,
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131 "Inexistent attribute in shader: " + name);
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132 }
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133 else
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134 {
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135 return location;
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fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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137 }
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
138 }
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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139 }