Mercurial > hg > orthanc-stone

annotate Framework/OpenGL/OpenGLTexture.cpp @ 947:1091b2adeb5a toa2019081001

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Fixed animation frame stopping when returning false + big work on the OpenGL objects to make them lost context-safe + debug code to forcefully tag a context as lost + debug macros
author Benjamin Golinvaux <bgo@osimis.io>
date Sat, 10 Aug 2019 13:07:31 +0200
parents 97926984d5d0
children 6a9300ecfa13
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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 "OpenGLTexture.h"
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23 #include "IOpenGLContext.h"
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24
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25 #include <Core/OrthancException.h>
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26
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27 namespace OrthancStone
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28 {
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29 namespace OpenGL
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30 {
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31 OpenGLTexture::OpenGLTexture(OpenGL::IOpenGLContext& context)
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32 : width_(0)
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33 , height_(0)
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34 , context_(context)
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35 {
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36 if (!context_.IsContextLost())
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37 {
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38 // context is made current externally. Let's check this!
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39 ORTHANC_CHECK_CURRENT_CONTEXT(context_);
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40 // Generate a texture object
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41 glGenTextures(1, &texture_);
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42 if (texture_ == 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 program");
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46 }
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47 }
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48 }
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49
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50 OpenGLTexture::~OpenGLTexture()
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51 {
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52 try
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53 {
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54 if (!context_.IsContextLost())
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55 {
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56 // context is made current externally. Let's check this!
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57 ORTHANC_CHECK_CURRENT_CONTEXT(context_);
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58 assert(texture_ != 0);
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59 ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glDeleteTextures");
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60 glDeleteTextures(1, &texture_);
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61 }
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62 }
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63 catch (const Orthanc::OrthancException& e)
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64 {
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65 if (e.HasDetails())
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66 {
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67 LOG(ERROR) << "OrthancException in ~OpenGLTexture: " << e.What() << " Details: " << e.GetDetails();
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68 }
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69 else
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70 {
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71 LOG(ERROR) << "OrthancException in ~OpenGLTexture: " << e.What();
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72 }
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73 }
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74 catch (const std::exception& e)
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75 {
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76 LOG(ERROR) << "std::exception in ~OpenGLTexture: " << e.what();
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77 }
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78 catch (...)
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79 {
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80 LOG(ERROR) << "Unknown exception in ~OpenGLTexture";
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81 }
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82 }
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83
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84 void OpenGLTexture::Load(const Orthanc::ImageAccessor& image,
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85 bool isLinearInterpolation)
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86 {
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87 // context is made current externally. Let's check this!
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88 ORTHANC_CHECK_CURRENT_CONTEXT(context_);
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89 if (!context_.IsContextLost())
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90 {
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91 glPixelStorei(GL_UNPACK_ALIGNMENT, 1); // Disable byte-alignment restriction
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92
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93 if (image.GetPitch() != image.GetBytesPerPixel() * image.GetWidth())
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94 {
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95 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
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96 "Unsupported non-zero padding");
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97 }
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98
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99 // Bind it
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100 glActiveTexture(GL_TEXTURE0);
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101 glBindTexture(GL_TEXTURE_2D, texture_);
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102
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103 GLenum sourceFormat, internalFormat;
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104
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105 switch (image.GetFormat())
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106 {
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107 case Orthanc::PixelFormat_Grayscale8:
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108 sourceFormat = GL_RED;
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109 internalFormat = GL_RED;
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110 break;
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111
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112 case Orthanc::PixelFormat_RGB24:
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113 sourceFormat = GL_RGB;
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114 internalFormat = GL_RGB;
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115 break;
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116
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117 case Orthanc::PixelFormat_RGBA32:
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118 sourceFormat = GL_RGBA;
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119 internalFormat = GL_RGBA;
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120 break;
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121
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122 default:
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123 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
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124 "No support for this format in OpenGL textures: " +
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125 std::string(EnumerationToString(image.GetFormat())));
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126 }
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127
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128 width_ = image.GetWidth();
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129 height_ = image.GetHeight();
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130
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131 GLint interpolation = (isLinearInterpolation ? GL_LINEAR : GL_NEAREST);
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132
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133 // Load the texture from the image buffer
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134 glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, image.GetWidth(), image.GetHeight(),
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135 0, sourceFormat, GL_UNSIGNED_BYTE, image.GetBuffer());
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
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136 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, interpolation);
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 616
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137 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, interpolation);
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 616
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138 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 616
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139 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 616
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140 }
579
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141 }
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142
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143
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parents:
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144 void OpenGLTexture::Bind(GLint location)
fadacfbf5538 OpenGL programs and textures
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145 {
fadacfbf5538 OpenGL programs and textures
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parents:
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146 glActiveTexture(GL_TEXTURE0);
fadacfbf5538 OpenGL programs and textures
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147 glBindTexture(GL_TEXTURE_2D, texture_);
fadacfbf5538 OpenGL programs and textures
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parents:
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148 glUniform1i(location, 0 /* texture unit */);
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149 }
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150 }
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151 }