Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/OpenGL/OpenGLTexture.cpp @ 2048:a05b03f45289 deep-learning

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added ORTHANC_WEBGL2_HEAP_COMPAT
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 08 Mar 2023 17:46:04 +0100
parents 0b596428e60c
children 66c130af0d3c
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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 #include "IOpenGLContext.h"
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26
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27 #include <Images/Image.h>
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28 #include <Logging.h>
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29 #include <OrthancException.h>
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30
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31 #if defined(__EMSCRIPTEN__)
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32 # if !defined(ORTHANC_WEBGL2_HEAP_COMPAT)
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33 # error The macro ORTHANC_WEBGL2_HEAP_COMPAT must be defined
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34 # endif
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35 #endif
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36
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37 namespace OrthancStone
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38 {
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39 namespace OpenGL
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40 {
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41 OpenGLTexture::OpenGLTexture(OpenGL::IOpenGLContext& 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 context_(context)
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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
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120 GLint interpolation = (isLinearInterpolation ? GL_LINEAR : GL_NEAREST);
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121
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122 // Load the texture from the image buffer
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123
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124 #if defined(__EMSCRIPTEN__) && (ORTHANC_WEBGL2_HEAP_COMPAT == 1)
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125 /**
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126 * This compatibility implementation seems to be necessary
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127 * with WebGL2, at least in Web workers. In such a situation,
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128 * the calls that are referred to as the "new garbage-free
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129 * entry points" in the Emscripten source file
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130 * "upstream/emscripten/src/library_webgl.js" seem to fail,
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131 * because the "Uint8Array" and "Float32Array" seem to be
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132 * incorrectly created. This compatibility reverts to the
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133 * WebGL1 behavior of "library_webgl.js", which requires the
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134 * function "emscriptenWebGLGetTexPixelData" that is defined
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135 * in "upstream/emscripten/src/library_webgl.js" to be
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136 * exported in the linker using option
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diff changeset
137 * "EXTRA_EXPORTED_RUNTIME_METHODS" or
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138 * "EXPORTED_RUNTIME_METHODS".
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139 **/
a05b03f45289 added ORTHANC_WEBGL2_HEAP_COMPAT
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diff changeset
140 EM_ASM({
a05b03f45289 added ORTHANC_WEBGL2_HEAP_COMPAT
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diff changeset
141 var ptr = $0 ? emscriptenWebGLGetTexPixelData($5, $4, $2, $3, $0, $1) : null;
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142 GLctx.texImage2D(GLctx.TEXTURE_2D, 0, $1, $2, $3, 0, $4, $5, ptr);
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diff changeset
143 },
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diff changeset
144 data, // $0
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145 internalFormat, // $1
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146 width, // $2
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147 height, // $3
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148 sourceFormat, // $4
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149 pixelType); // $5
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150 #else
2034
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151 glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height,
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152 0, sourceFormat, pixelType, data);
2048
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153 #endif
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154
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155 ORTHANC_OPENGL_CHECK("glTexImage2D()");
2036
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156
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157 #if !defined(__EMSCRIPTEN__)
2046
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158 /**
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diff changeset
159 * glGetTexLevelParameteriv() was introduced in OpenGL ES 3.1,
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160 * but WebGL 2 only supports OpenGL ES 3.0, so it is not
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161 * available in WebAssembly:
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162 * https://registry.khronos.org/OpenGL-Refpages/es3.1/html/glGetTexLevelParameter.xhtml
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163 **/
2036
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164 GLint w, h;
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165 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
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166 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &h);
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167 if (width != static_cast<unsigned int>(w) ||
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diff changeset
168 height != static_cast<unsigned int>(h))
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diff changeset
169 {
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170 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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171 "Your GPU cannot create a texture of size " +
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diff changeset
172 boost::lexical_cast<std::string>(width) + " x " +
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diff changeset
173 boost::lexical_cast<std::string>(height));
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diff changeset
174 }
2043
f3d756e5503f fix build on wasm
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diff changeset
175 #endif
2036
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diff changeset
176
947
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diff changeset
177 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, interpolation);
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diff changeset
178 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, interpolation);
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diff changeset
179 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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diff changeset
180 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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diff changeset
181 }
579
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182 }
fadacfbf5538 OpenGL programs and textures
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183
2034
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diff changeset
184 void OpenGLTexture::Load(const Orthanc::ImageAccessor& image,
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diff changeset
185 bool isLinearInterpolation)
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186 {
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187 if (image.GetPitch() != image.GetBytesPerPixel() * image.GetWidth())
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diff changeset
188 {
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189 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
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190 "Pitch is not the same as the row size");
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diff changeset
191 }
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diff changeset
192 else
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diff changeset
193 {
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194 Setup(image.GetFormat(), image.GetWidth(), image.GetHeight(),
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diff changeset
195 isLinearInterpolation, image.GetConstBuffer());
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diff changeset
196 }
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diff changeset
197 }
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diff changeset
198
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fadacfbf5538 OpenGL programs and textures
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199
2039
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diff changeset
200 void OpenGLTexture::Bind(GLint location) const
579
fadacfbf5538 OpenGL programs and textures
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diff changeset
201 {
fadacfbf5538 OpenGL programs and textures
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diff changeset
202 glActiveTexture(GL_TEXTURE0);
fadacfbf5538 OpenGL programs and textures
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diff changeset
203 glBindTexture(GL_TEXTURE_2D, texture_);
fadacfbf5538 OpenGL programs and textures
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diff changeset
204 glUniform1i(location, 0 /* texture unit */);
fadacfbf5538 OpenGL programs and textures
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diff changeset
205 }
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
206
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
207
2042
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diff changeset
208 void OpenGLTexture::BindAsTextureUnit(GLint location,
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
209 unsigned int unit) const
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
210 {
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
211 if (unit >= 32)
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
212 {
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
213 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
214 }
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
215
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
216 assert(GL_TEXTURE0 + 1 == GL_TEXTURE1 &&
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
217 GL_TEXTURE0 + 31 == GL_TEXTURE31);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
218
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
219 glActiveTexture(GL_TEXTURE0 + unit);
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diff changeset
220 glBindTexture(GL_TEXTURE_2D, texture_);
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diff changeset
221 glUniform1i(location, unit /* texture unit */);
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diff changeset
222 }
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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parents: 2039
diff changeset
223
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
224
2039
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diff changeset
225 Orthanc::ImageAccessor* OpenGLTexture::Download(Orthanc::PixelFormat format) const
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
226 {
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
227 if (context_.IsContextLost())
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
228 {
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
229 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
230 "OpenGL context is lost");
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
231 }
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
232
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
233 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
234 assert(target->GetPitch() == width_ * Orthanc::GetBytesPerPixel(format));
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
235
2044
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diff changeset
236 #if defined(__EMSCRIPTEN__)
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diff changeset
237 /**
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diff changeset
238 * The "glGetTexImage()" is unavailable in WebGL, it is
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diff changeset
239 * necessary to use a framebuffer:
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diff changeset
240 * https://stackoverflow.com/a/15064957
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diff changeset
241 **/
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diff changeset
242 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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diff changeset
243
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
244 #else
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
245 glBindTexture(GL_TEXTURE_2D, texture_);
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
246
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
247 switch (format)
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
248 {
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
249 case Orthanc::PixelFormat_Grayscale8:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
250 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RED, GL_UNSIGNED_BYTE, target->GetBuffer());
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
251 break;
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_RGB24:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
254 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RGB, 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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parents: 1871
diff changeset
256
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
257 case Orthanc::PixelFormat_RGBA32:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
258 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RGBA, 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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parents: 1871
diff changeset
260
2033
23b0a42eea85 added support for floating-point images in OpenGLTexture
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parents: 2032
diff changeset
261 case Orthanc::PixelFormat_Float32:
23b0a42eea85 added support for floating-point images in OpenGLTexture
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diff changeset
262 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
263 break;
23b0a42eea85 added support for floating-point images in OpenGLTexture
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parents: 2032
diff changeset
264
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
265 default:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
266 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
267 }
2044
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diff changeset
268 #endif
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
269
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
270 return target.release();
d10bab7cc396 added OpenGLTexture::Download()
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271 }
2035
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272
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273
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274 void OpenGLTexture::SetClampingToZero()
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275 {
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276 glBindTexture(GL_TEXTURE_2D, texture_);
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277 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
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278 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
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279
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280 GLfloat colorfv[4] = { 0, 0, 0, 0 };
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281 glTextureParameterfv(texture_, GL_TEXTURE_BORDER_COLOR, colorfv);
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282 }
2037
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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283
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284
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285 void OpenGLTexture::ConvertToOpenGLFormats(GLenum& sourceFormat,
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286 GLenum& internalFormat,
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287 GLenum& pixelType,
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288 Orthanc::PixelFormat format)
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289 {
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290 switch (format)
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291 {
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292 case Orthanc::PixelFormat_Grayscale8:
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293 sourceFormat = GL_RED;
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294 internalFormat = GL_RED;
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295 pixelType = GL_UNSIGNED_BYTE;
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296 break;
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297
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298 case Orthanc::PixelFormat_RGB24:
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299 sourceFormat = GL_RGB;
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300 internalFormat = GL_RGB;
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301 pixelType = GL_UNSIGNED_BYTE;
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302 break;
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303
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304 case Orthanc::PixelFormat_RGBA32:
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305 sourceFormat = GL_RGBA;
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306 internalFormat = GL_RGBA;
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307 pixelType = GL_UNSIGNED_BYTE;
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308 break;
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309
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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310 case Orthanc::PixelFormat_Float32:
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311 sourceFormat = GL_RED;
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312 internalFormat = GL_R32F; // Don't use "GL_RED" here, as it clamps to [0,1]
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313 pixelType = GL_FLOAT;
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314 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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315
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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316 default:
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317 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
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318 "No support for this format in OpenGL textures: " +
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319 std::string(EnumerationToString(format)));
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320 }
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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321 }
579
fadacfbf5538 OpenGL programs and textures
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parents:
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322 }
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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323 }