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annotate OrthancStone/Sources/OpenGL/OpenGLTexture.cpp @ 2061:6ea5f40ea0e9 deep-learning

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added ImageProcessingProgram
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 03 May 2023 16:34:34 +0200
parents 86e0e92a2e0d
children fdb012c86a75
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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) 2017-2022 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 "OpenGLTexture.h"
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25
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26 #if defined(__EMSCRIPTEN__)
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27 # if !defined(ORTHANC_WEBGL2_HEAP_COMPAT)
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28 # error The macro ORTHANC_WEBGL2_HEAP_COMPAT must be defined
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29 # endif
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30 #endif
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31
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32 #include <Images/Image.h>
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33 #include <Logging.h>
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34 #include <OrthancException.h>
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35
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36 namespace OrthancStone
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37 {
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38 namespace OpenGL
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39 {
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40 OpenGLTexture::OpenGLTexture(OpenGL::IOpenGLContext& context) :
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41 context_(context),
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42 texture_(0),
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43 width_(0),
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44 height_(0),
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45 format_(Orthanc::PixelFormat_Grayscale8),
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46 isLinearInterpolation_(false)
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47 {
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48 if (context.IsContextLost())
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49 {
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50 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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51 "OpenGL context has been lost");
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52 }
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53
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54 // Generate a texture object
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55 glGenTextures(1, &texture_);
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56 ORTHANC_OPENGL_CHECK("glGenTextures()");
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57
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58 if (texture_ == 0)
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59 {
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60 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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61 "Cannot create an OpenGL texture");
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62 }
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63 }
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64
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65 OpenGLTexture::~OpenGLTexture()
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66 {
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67 try
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68 {
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69 if (!context_.IsContextLost())
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70 {
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71 assert(texture_ != 0);
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72 ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glDeleteTextures");
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73 glDeleteTextures(1, &texture_);
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74 }
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75 }
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76 catch (const Orthanc::OrthancException& e)
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77 {
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78 if (e.HasDetails())
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79 {
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80 LOG(ERROR) << "OrthancException in ~OpenGLTexture: " << e.What() << " Details: " << e.GetDetails();
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81 }
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82 else
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83 {
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84 LOG(ERROR) << "OrthancException in ~OpenGLTexture: " << e.What();
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85 }
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86 }
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87 catch (const std::exception& e)
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88 {
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89 LOG(ERROR) << "std::exception in ~OpenGLTexture: " << e.what();
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90 }
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91 catch (...)
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92 {
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93 LOG(ERROR) << "Unknown exception in ~OpenGLTexture";
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94 }
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95 }
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96
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97 void OpenGLTexture::Setup(Orthanc::PixelFormat format,
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98 unsigned int width,
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99 unsigned int height,
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100 bool isLinearInterpolation,
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101 const void* data)
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102 {
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103 if (context_.IsContextLost())
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104 {
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105 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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106 "OpenGL context has been lost");
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107 }
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108 else
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109 {
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110 glPixelStorei(GL_UNPACK_ALIGNMENT, 1); // Disable byte-alignment restriction
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111
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112 // Bind it
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113 glActiveTexture(GL_TEXTURE0);
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114 glBindTexture(GL_TEXTURE_2D, texture_);
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115
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116 GLenum sourceFormat, internalFormat, pixelType;
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117 ConvertToOpenGLFormats(sourceFormat, internalFormat, pixelType, format);
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118
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119 format_ = format;
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120 width_ = width;
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121 height_ = height;
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122 isLinearInterpolation_ = isLinearInterpolation;
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123
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124 GLint interpolation = (isLinearInterpolation ? GL_LINEAR : GL_NEAREST);
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125
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126 // Load the texture from the image buffer
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127
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128 #if defined(__EMSCRIPTEN__) && (ORTHANC_WEBGL2_HEAP_COMPAT == 1)
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129 /**
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130 * This compatibility implementation seems to be necessary
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131 * with WebGL2, at least in Web workers. In such a situation,
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132 * the calls that are referred to as the "new garbage-free
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133 * entry points" in the Emscripten source file
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134 * "upstream/emscripten/src/library_webgl.js" seem to fail,
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135 * because the "Uint8Array" and "Float32Array" seem to be
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diff changeset
136 * incorrectly created. This compatibility reverts to the
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137 * WebGL1 behavior of "library_webgl.js", which requires the
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138 * function "emscriptenWebGLGetTexPixelData" that is defined
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139 * in "upstream/emscripten/src/library_webgl.js" to be
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140 * exported in the linker using option
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141 * "EXTRA_EXPORTED_RUNTIME_METHODS" or
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142 * "EXPORTED_RUNTIME_METHODS".
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diff changeset
143 **/
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diff changeset
144 EM_ASM({
a05b03f45289 added ORTHANC_WEBGL2_HEAP_COMPAT
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145 var ptr = $0 ? emscriptenWebGLGetTexPixelData($5, $4, $2, $3, $0, $1) : null;
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146 GLctx.texImage2D(GLctx.TEXTURE_2D, 0, $1, $2, $3, 0, $4, $5, ptr);
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147 },
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diff changeset
148 data, // $0
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diff changeset
149 internalFormat, // $1
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150 width, // $2
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151 height, // $3
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152 sourceFormat, // $4
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153 pixelType); // $5
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154 #else
2034
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155 glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height,
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156 0, sourceFormat, pixelType, data);
2048
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157 #endif
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158
2046
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159 ORTHANC_OPENGL_CHECK("glTexImage2D()");
2036
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160
2043
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diff changeset
161 #if !defined(__EMSCRIPTEN__)
2046
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162 /**
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diff changeset
163 * glGetTexLevelParameteriv() was introduced in OpenGL ES 3.1,
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diff changeset
164 * but WebGL 2 only supports OpenGL ES 3.0, so it is not
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165 * available in WebAssembly:
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166 * https://registry.khronos.org/OpenGL-Refpages/es3.1/html/glGetTexLevelParameter.xhtml
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167 **/
2036
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168 GLint w, h;
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169 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
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170 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &h);
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171 if (width != static_cast<unsigned int>(w) ||
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diff changeset
172 height != static_cast<unsigned int>(h))
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diff changeset
173 {
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174 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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175 "Your GPU cannot create a texture of size " +
444527d34647 sanity check in textures
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diff changeset
176 boost::lexical_cast<std::string>(width) + " x " +
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177 boost::lexical_cast<std::string>(height));
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178 }
2043
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diff changeset
179 #endif
2036
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diff changeset
180
947
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diff changeset
181 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, interpolation);
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diff changeset
182 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, interpolation);
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diff changeset
183 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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diff changeset
184 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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diff changeset
185 }
579
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186 }
fadacfbf5538 OpenGL programs and textures
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187
2034
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188 void OpenGLTexture::Load(const Orthanc::ImageAccessor& image,
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189 bool isLinearInterpolation)
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190 {
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191 if (image.GetPitch() != image.GetBytesPerPixel() * image.GetWidth())
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192 {
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193 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
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194 "Pitch is not the same as the row size");
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195 }
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diff changeset
196 else
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diff changeset
197 {
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198 Setup(image.GetFormat(), image.GetWidth(), image.GetHeight(),
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199 isLinearInterpolation, image.GetConstBuffer());
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200 }
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diff changeset
201 }
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diff changeset
202
579
fadacfbf5538 OpenGL programs and textures
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203
2039
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diff changeset
204 void OpenGLTexture::Bind(GLint location) const
579
fadacfbf5538 OpenGL programs and textures
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205 {
fadacfbf5538 OpenGL programs and textures
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206 glActiveTexture(GL_TEXTURE0);
fadacfbf5538 OpenGL programs and textures
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diff changeset
207 glBindTexture(GL_TEXTURE_2D, texture_);
fadacfbf5538 OpenGL programs and textures
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diff changeset
208 glUniform1i(location, 0 /* texture unit */);
fadacfbf5538 OpenGL programs and textures
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diff changeset
209 }
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
210
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
211
2042
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diff changeset
212 void OpenGLTexture::BindAsTextureUnit(GLint location,
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
213 unsigned int unit) const
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
214 {
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
215 if (unit >= 32)
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
216 {
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
217 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
218 }
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
219
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
220 assert(GL_TEXTURE0 + 1 == GL_TEXTURE1 &&
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
221 GL_TEXTURE0 + 31 == GL_TEXTURE31);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
222
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
223 glActiveTexture(GL_TEXTURE0 + unit);
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diff changeset
224 glBindTexture(GL_TEXTURE_2D, texture_);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
225 glUniform1i(location, unit /* texture unit */);
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diff changeset
226 }
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
227
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
228
2039
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diff changeset
229 Orthanc::ImageAccessor* OpenGLTexture::Download(Orthanc::PixelFormat format) const
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
230 {
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
231 if (context_.IsContextLost())
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
232 {
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
233 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
234 "OpenGL context is lost");
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
235 }
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
236
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
237 std::unique_ptr<Orthanc::ImageAccessor> target(new Orthanc::Image(format, width_, height_, true));
2033
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diff changeset
238 assert(target->GetPitch() == width_ * Orthanc::GetBytesPerPixel(format));
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
239
2044
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diff changeset
240 #if defined(__EMSCRIPTEN__)
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diff changeset
241 /**
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diff changeset
242 * The "glGetTexImage()" is unavailable in WebGL, it is
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diff changeset
243 * necessary to use a framebuffer:
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diff changeset
244 * https://stackoverflow.com/a/15064957
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diff changeset
245 **/
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diff changeset
246 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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diff changeset
247
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
248 #else
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
249 glBindTexture(GL_TEXTURE_2D, texture_);
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
250
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
251 switch (format)
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
252 {
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
253 case Orthanc::PixelFormat_Grayscale8:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
254 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RED, GL_UNSIGNED_BYTE, target->GetBuffer());
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
255 break;
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
256
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
257 case Orthanc::PixelFormat_RGB24:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
258 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RGB, GL_UNSIGNED_BYTE, target->GetBuffer());
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
259 break;
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
260
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
261 case Orthanc::PixelFormat_RGBA32:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
262 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RGBA, GL_UNSIGNED_BYTE, target->GetBuffer());
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
263 break;
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
264
2033
23b0a42eea85 added support for floating-point images in OpenGLTexture
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parents: 2032
diff changeset
265 case Orthanc::PixelFormat_Float32:
23b0a42eea85 added support for floating-point images in OpenGLTexture
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diff changeset
266 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RED, GL_FLOAT, target->GetBuffer());
23b0a42eea85 added support for floating-point images in OpenGLTexture
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parents: 2032
diff changeset
267 break;
23b0a42eea85 added support for floating-point images in OpenGLTexture
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parents: 2032
diff changeset
268
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
269 default:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
270 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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271 }
2044
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272 #endif
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273
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274 return target.release();
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275 }
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276
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277
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278 void OpenGLTexture::SetClampingToZero()
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279 {
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280 #if defined(__EMSCRIPTEN__)
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281 /**
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282 * This is because WebGL 2 derives from OpenGL ES 3.0, which
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283 * doesn't support GL_CLAMP_TO_BORDER, as can be seen here:
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284 * https://registry.khronos.org/OpenGL-Refpages/es3.0/html/glTexParameter.xhtml
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285 **/
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286 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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287 "OpenGLTextureArray::SetClampingToZero() is not available in WebGL 2");
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288 #else
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289 ORTHANC_OPENGL_CHECK("Entering OpenGLTexture::SetClampingToZero()");
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290
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291 glBindTexture(GL_TEXTURE_2D, texture_);
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292 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
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293 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
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294
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295 GLfloat colorfv[4] = { 0, 0, 0, 0 };
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296 glTextureParameterfv(texture_, GL_TEXTURE_BORDER_COLOR, colorfv);
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297
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298 ORTHANC_OPENGL_CHECK("Exiting OpenGLTexture::SetClampingToZero()");
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299 #endif
2035
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300 }
2037
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301
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302
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303 void OpenGLTexture::ConvertToOpenGLFormats(GLenum& sourceFormat,
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304 GLenum& internalFormat,
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305 GLenum& pixelType,
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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306 Orthanc::PixelFormat format)
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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307 {
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308 switch (format)
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309 {
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310 case Orthanc::PixelFormat_Grayscale8:
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311 sourceFormat = GL_RED;
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312 internalFormat = GL_RED;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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313 pixelType = GL_UNSIGNED_BYTE;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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314 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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315
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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316 case Orthanc::PixelFormat_RGB24:
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317 sourceFormat = GL_RGB;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
318 internalFormat = GL_RGB;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
319 pixelType = GL_UNSIGNED_BYTE;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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320 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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321
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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322 case Orthanc::PixelFormat_RGBA32:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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323 sourceFormat = GL_RGBA;
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324 internalFormat = GL_RGBA;
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325 pixelType = GL_UNSIGNED_BYTE;
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diff changeset
326 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
327
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
328 case Orthanc::PixelFormat_Float32:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
329 sourceFormat = GL_RED;
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diff changeset
330 internalFormat = GL_R32F; // Don't use "GL_RED" here, as it clamps to [0,1]
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
331 pixelType = GL_FLOAT;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
332 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
333
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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334 default:
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335 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
336 "No support for this format in OpenGL textures: " +
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
337 std::string(EnumerationToString(format)));
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
338 }
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
339 }
579
fadacfbf5538 OpenGL programs and textures
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parents:
diff changeset
340 }
fadacfbf5538 OpenGL programs and textures
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parents:
diff changeset
341 }