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annotate OrthancStone/Sources/OpenGL/OpenGLTexture.cpp @ 2060:86e0e92a2e0d deep-learning

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added OpenGLTextureArray and OpenGLFramebuffer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 03 May 2023 16:15:50 +0200
parents c0627145b441
children 6ea5f40ea0e9
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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
1871
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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 // Generate a texture object
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51 glGenTextures(1, &texture_);
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52 ORTHANC_OPENGL_CHECK("glGenTextures()");
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53
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54 if (texture_ == 0)
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55 {
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56 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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57 "Cannot create an OpenGL texture");
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58 }
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59 }
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60 }
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61
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62 OpenGLTexture::~OpenGLTexture()
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63 {
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64 try
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65 {
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66 if (!context_.IsContextLost())
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67 {
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68 assert(texture_ != 0);
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69 ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glDeleteTextures");
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70 glDeleteTextures(1, &texture_);
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71 }
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72 }
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73 catch (const Orthanc::OrthancException& e)
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74 {
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75 if (e.HasDetails())
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76 {
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77 LOG(ERROR) << "OrthancException in ~OpenGLTexture: " << e.What() << " Details: " << e.GetDetails();
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78 }
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79 else
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80 {
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81 LOG(ERROR) << "OrthancException in ~OpenGLTexture: " << e.What();
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82 }
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83 }
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84 catch (const std::exception& e)
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85 {
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86 LOG(ERROR) << "std::exception in ~OpenGLTexture: " << e.what();
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87 }
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88 catch (...)
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89 {
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90 LOG(ERROR) << "Unknown exception in ~OpenGLTexture";
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91 }
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92 }
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93
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94 void OpenGLTexture::Setup(Orthanc::PixelFormat format,
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95 unsigned int width,
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96 unsigned int height,
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97 bool isLinearInterpolation,
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98 const void* data)
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99 {
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100 if (context_.IsContextLost())
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101 {
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102 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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103 "OpenGL context has been lost");
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104 }
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105 else
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106 {
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107 glPixelStorei(GL_UNPACK_ALIGNMENT, 1); // Disable byte-alignment restriction
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108
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109 // Bind it
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110 glActiveTexture(GL_TEXTURE0);
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111 glBindTexture(GL_TEXTURE_2D, texture_);
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112
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113 GLenum sourceFormat, internalFormat, pixelType;
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114 ConvertToOpenGLFormats(sourceFormat, internalFormat, pixelType, format);
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115
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116 format_ = format;
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117 width_ = width;
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118 height_ = height;
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119 isLinearInterpolation_ = isLinearInterpolation;
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120
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121 GLint interpolation = (isLinearInterpolation ? GL_LINEAR : GL_NEAREST);
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122
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123 // Load the texture from the image buffer
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124
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125 #if defined(__EMSCRIPTEN__) && (ORTHANC_WEBGL2_HEAP_COMPAT == 1)
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126 /**
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127 * This compatibility implementation seems to be necessary
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128 * with WebGL2, at least in Web workers. In such a situation,
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129 * the calls that are referred to as the "new garbage-free
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130 * entry points" in the Emscripten source file
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131 * "upstream/emscripten/src/library_webgl.js" seem to fail,
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132 * because the "Uint8Array" and "Float32Array" seem to be
a05b03f45289 added ORTHANC_WEBGL2_HEAP_COMPAT
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133 * incorrectly created. This compatibility reverts to the
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134 * WebGL1 behavior of "library_webgl.js", which requires the
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diff changeset
135 * function "emscriptenWebGLGetTexPixelData" that is defined
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136 * in "upstream/emscripten/src/library_webgl.js" to be
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137 * exported in the linker using option
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diff changeset
138 * "EXTRA_EXPORTED_RUNTIME_METHODS" or
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139 * "EXPORTED_RUNTIME_METHODS".
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140 **/
a05b03f45289 added ORTHANC_WEBGL2_HEAP_COMPAT
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diff changeset
141 EM_ASM({
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diff changeset
142 var ptr = $0 ? emscriptenWebGLGetTexPixelData($5, $4, $2, $3, $0, $1) : null;
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143 GLctx.texImage2D(GLctx.TEXTURE_2D, 0, $1, $2, $3, 0, $4, $5, ptr);
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diff changeset
144 },
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diff changeset
145 data, // $0
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diff changeset
146 internalFormat, // $1
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147 width, // $2
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148 height, // $3
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149 sourceFormat, // $4
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150 pixelType); // $5
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diff changeset
151 #else
2034
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152 glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height,
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153 0, sourceFormat, pixelType, data);
2048
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154 #endif
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155
2046
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156 ORTHANC_OPENGL_CHECK("glTexImage2D()");
2036
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157
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diff changeset
158 #if !defined(__EMSCRIPTEN__)
2046
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159 /**
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diff changeset
160 * glGetTexLevelParameteriv() was introduced in OpenGL ES 3.1,
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161 * but WebGL 2 only supports OpenGL ES 3.0, so it is not
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162 * available in WebAssembly:
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163 * https://registry.khronos.org/OpenGL-Refpages/es3.1/html/glGetTexLevelParameter.xhtml
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164 **/
2036
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165 GLint w, h;
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166 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
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167 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &h);
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168 if (width != static_cast<unsigned int>(w) ||
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diff changeset
169 height != static_cast<unsigned int>(h))
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diff changeset
170 {
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171 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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172 "Your GPU cannot create a texture of size " +
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diff changeset
173 boost::lexical_cast<std::string>(width) + " x " +
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diff changeset
174 boost::lexical_cast<std::string>(height));
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diff changeset
175 }
2043
f3d756e5503f fix build on wasm
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diff changeset
176 #endif
2036
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diff changeset
177
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diff changeset
178 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, interpolation);
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diff changeset
179 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, interpolation);
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diff changeset
180 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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diff changeset
181 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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diff changeset
182 }
579
fadacfbf5538 OpenGL programs and textures
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183 }
fadacfbf5538 OpenGL programs and textures
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184
2034
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diff changeset
185 void OpenGLTexture::Load(const Orthanc::ImageAccessor& image,
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diff changeset
186 bool isLinearInterpolation)
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187 {
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188 if (image.GetPitch() != image.GetBytesPerPixel() * image.GetWidth())
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diff changeset
189 {
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190 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
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191 "Pitch is not the same as the row size");
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diff changeset
192 }
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diff changeset
193 else
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diff changeset
194 {
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195 Setup(image.GetFormat(), image.GetWidth(), image.GetHeight(),
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diff changeset
196 isLinearInterpolation, image.GetConstBuffer());
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diff changeset
197 }
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diff changeset
198 }
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diff changeset
199
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200
2039
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diff changeset
201 void OpenGLTexture::Bind(GLint location) const
579
fadacfbf5538 OpenGL programs and textures
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diff changeset
202 {
fadacfbf5538 OpenGL programs and textures
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diff changeset
203 glActiveTexture(GL_TEXTURE0);
fadacfbf5538 OpenGL programs and textures
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diff changeset
204 glBindTexture(GL_TEXTURE_2D, texture_);
fadacfbf5538 OpenGL programs and textures
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parents:
diff changeset
205 glUniform1i(location, 0 /* texture unit */);
fadacfbf5538 OpenGL programs and textures
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diff changeset
206 }
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
207
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
208
2042
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diff changeset
209 void OpenGLTexture::BindAsTextureUnit(GLint location,
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
210 unsigned int unit) const
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
211 {
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
212 if (unit >= 32)
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
213 {
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
214 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
215 }
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
216
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
217 assert(GL_TEXTURE0 + 1 == GL_TEXTURE1 &&
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
218 GL_TEXTURE0 + 31 == GL_TEXTURE31);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
219
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
220 glActiveTexture(GL_TEXTURE0 + unit);
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diff changeset
221 glBindTexture(GL_TEXTURE_2D, texture_);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
222 glUniform1i(location, unit /* texture unit */);
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diff changeset
223 }
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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parents: 2039
diff changeset
224
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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parents: 2039
diff changeset
225
2039
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diff changeset
226 Orthanc::ImageAccessor* OpenGLTexture::Download(Orthanc::PixelFormat format) const
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
227 {
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
228 if (context_.IsContextLost())
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
229 {
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
230 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
231 "OpenGL context is lost");
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
232 }
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
233
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
234 std::unique_ptr<Orthanc::ImageAccessor> target(new Orthanc::Image(format, width_, height_, true));
2033
23b0a42eea85 added support for floating-point images in OpenGLTexture
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diff changeset
235 assert(target->GetPitch() == width_ * Orthanc::GetBytesPerPixel(format));
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
236
2044
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diff changeset
237 #if defined(__EMSCRIPTEN__)
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diff changeset
238 /**
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diff changeset
239 * The "glGetTexImage()" is unavailable in WebGL, it is
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diff changeset
240 * necessary to use a framebuffer:
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diff changeset
241 * https://stackoverflow.com/a/15064957
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diff changeset
242 **/
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diff changeset
243 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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diff changeset
244
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
245 #else
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
246 glBindTexture(GL_TEXTURE_2D, texture_);
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
247
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
248 switch (format)
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
249 {
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
250 case Orthanc::PixelFormat_Grayscale8:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
251 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RED, GL_UNSIGNED_BYTE, target->GetBuffer());
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
252 break;
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
253
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
254 case Orthanc::PixelFormat_RGB24:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
255 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RGB, GL_UNSIGNED_BYTE, target->GetBuffer());
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
256 break;
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
257
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
258 case Orthanc::PixelFormat_RGBA32:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
259 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
260 break;
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
261
2033
23b0a42eea85 added support for floating-point images in OpenGLTexture
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parents: 2032
diff changeset
262 case Orthanc::PixelFormat_Float32:
23b0a42eea85 added support for floating-point images in OpenGLTexture
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diff changeset
263 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
264 break;
23b0a42eea85 added support for floating-point images in OpenGLTexture
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parents: 2032
diff changeset
265
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
266 default:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
267 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
268 }
2044
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diff changeset
269 #endif
2032
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
270
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271 return target.release();
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272 }
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273
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274
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275 void OpenGLTexture::SetClampingToZero()
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276 {
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277 #if defined(__EMSCRIPTEN__)
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278 /**
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279 * This is because WebGL 2 derives from OpenGL ES 3.0, which
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280 * doesn't support GL_CLAMP_TO_BORDER, as can be seen here:
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281 * https://registry.khronos.org/OpenGL-Refpages/es3.0/html/glTexParameter.xhtml
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282 **/
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283 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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284 "OpenGLTextureArray::SetClampingToZero() is not available in WebGL 2");
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285 #else
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286 ORTHANC_OPENGL_CHECK("Entering OpenGLTexture::SetClampingToZero()");
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287
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288 glBindTexture(GL_TEXTURE_2D, texture_);
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289 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
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290 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
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291
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292 GLfloat colorfv[4] = { 0, 0, 0, 0 };
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293 glTextureParameterfv(texture_, GL_TEXTURE_BORDER_COLOR, colorfv);
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294
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295 ORTHANC_OPENGL_CHECK("Exiting OpenGLTexture::SetClampingToZero()");
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296 #endif
2035
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297 }
2037
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298
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299
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300 void OpenGLTexture::ConvertToOpenGLFormats(GLenum& sourceFormat,
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301 GLenum& internalFormat,
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302 GLenum& pixelType,
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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303 Orthanc::PixelFormat format)
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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304 {
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305 switch (format)
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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306 {
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307 case Orthanc::PixelFormat_Grayscale8:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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308 sourceFormat = GL_RED;
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309 internalFormat = GL_RED;
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310 pixelType = GL_UNSIGNED_BYTE;
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311 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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312
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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313 case Orthanc::PixelFormat_RGB24:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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314 sourceFormat = GL_RGB;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
315 internalFormat = GL_RGB;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
316 pixelType = GL_UNSIGNED_BYTE;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
317 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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318
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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319 case Orthanc::PixelFormat_RGBA32:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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320 sourceFormat = GL_RGBA;
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321 internalFormat = GL_RGBA;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
322 pixelType = GL_UNSIGNED_BYTE;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
323 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
324
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
325 case Orthanc::PixelFormat_Float32:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
326 sourceFormat = GL_RED;
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diff changeset
327 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
328 pixelType = GL_FLOAT;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
329 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
330
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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331 default:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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332 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
333 "No support for this format in OpenGL textures: " +
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
334 std::string(EnumerationToString(format)));
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
335 }
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
336 }
579
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
337 }
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
338 }