Mercurial > hg > orthanc-stone
annotate Framework/OpenGL/OpenGLShader.cpp @ 1213:86a8266b8888 broker
moving the scene from IViewport to ViewportController
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 04 Dec 2019 17:54:10 +0100 |
parents | a7351ad54960 |
children | 2d8ab34c8c91 |
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) 2017-2019 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 "OpenGLShader.h" |
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23 |
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24 #include <Core/OrthancException.h> |
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25 |
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26 namespace OrthancStone |
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27 { |
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28 namespace OpenGL |
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29 { |
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30 static GLuint CompileShader(GLenum type, |
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31 const std::string& source) |
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32 { |
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33 // Create shader object |
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34 const GLchar* sourceString[1]; |
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35 GLint sourceStringLengths[1]; |
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36 |
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37 sourceString[0] = source.c_str(); |
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38 sourceStringLengths[0] = static_cast<GLint>(source.length()); |
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39 GLuint shader = glCreateShader(type); |
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40 ORTHANC_OPENGL_CHECK("glCreateShader"); |
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41 |
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42 if (shader == 0) |
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43 { |
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44 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, |
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45 "Cannot create an OpenGL shader"); |
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46 } |
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47 else |
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48 { |
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49 // Assign and compile the source to the shader object |
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50 glShaderSource(shader, 1, sourceString, sourceStringLengths); |
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51 ORTHANC_OPENGL_CHECK("glShaderSource"); |
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52 glCompileShader(shader); |
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53 ORTHANC_OPENGL_CHECK("glCompileShader"); |
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54 |
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55 // Check if there were errors |
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56 int infoLen = 0; |
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57 glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLen); |
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58 ORTHANC_OPENGL_CHECK("glGetShaderiv"); |
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59 |
599 | 60 if (infoLen > 1) // Might be equal to 1, which amounts to no error |
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61 { |
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62 std::string infoLog; |
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63 infoLog.resize(infoLen + 1); |
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64 glGetShaderInfoLog(shader, infoLen, NULL, &infoLog[0]); |
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65 ORTHANC_OPENGL_CHECK("glGetShaderInfoLog"); |
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66 ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glDeleteShader"); |
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67 glDeleteShader(shader); |
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68 ORTHANC_OPENGL_CHECK("glDeleteShader"); |
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69 |
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70 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, |
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71 "Error while creating an OpenGL shader: " + infoLog); |
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72 } |
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73 else |
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74 { |
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75 return shader; |
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76 } |
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77 } |
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78 } |
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79 |
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80 |
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81 OpenGLShader::OpenGLShader(GLenum type, |
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82 const std::string& source) |
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83 { |
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84 shader_ = CompileShader(type, source); |
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85 isValid_ = true; |
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86 } |
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87 |
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88 |
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89 OpenGLShader::~OpenGLShader() |
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90 { |
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91 try |
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92 { |
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93 if (isValid_) |
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94 { |
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95 ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glDeleteShader"); |
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96 glDeleteShader(shader_); |
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97 ORTHANC_OPENGL_CHECK("glDeleteShader"); |
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98 } |
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99 } |
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100 catch (const Orthanc::OrthancException& e) |
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101 { |
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102 if (e.HasDetails()) |
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103 { |
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104 LOG(ERROR) << "OrthancException in ~OpenGLShader: " << e.What() << " Details: " << e.GetDetails(); |
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105 } |
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106 else |
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107 { |
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108 LOG(ERROR) << "OrthancException in ~OpenGLShader: " << e.What(); |
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109 } |
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110 } |
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111 catch (const std::exception& e) |
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112 { |
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113 LOG(ERROR) << "std::exception in ~OpenGLShader: " << e.what(); |
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114 } |
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115 catch (...) |
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116 { |
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117 LOG(ERROR) << "Unknown exception in ~OpenGLShader"; |
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118 } |
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119 } |
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120 |
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121 GLuint OpenGLShader::Release() |
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122 { |
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123 if (isValid_) |
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124 { |
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125 isValid_ = false; |
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126 return shader_; |
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127 } |
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128 else |
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129 { |
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130 LOG(ERROR) << "OpenGLShader::Release(): (!isValid_)"; |
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131 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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132 } |
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133 } |
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134 } |
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135 } |