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annotate OrthancStone/Sources/OpenGL/OpenGLTextureVolume.cpp @ 2078:fdb012c86a75 deep-learning

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integration mainline->deep-learning
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 12 Jul 2023 21:21:11 +0200
parents cf3d85eb291c
children
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2066
cf3d85eb291c added class OpenGLTextureVolume
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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 "OpenGLTextureVolume.h"
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25
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26 #include "OpenGLFramebuffer.h"
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27 #include "OpenGLTexture.h"
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28
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29 #include <Images/Image.h>
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30 #include <OrthancException.h>
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31
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32 #include <boost/lexical_cast.hpp>
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33 #include <cassert>
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34
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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 OpenGLTextureVolume::OpenGLTextureVolume(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 depth_(0),
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46 format_(Orthanc::PixelFormat_Float32),
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47 isLinearInterpolation_(false)
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48 {
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49 if (context.IsContextLost())
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50 {
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51 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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52 "OpenGL context has been lost");
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53 }
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54
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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 array");
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62 }
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63 }
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64
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65
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66 OpenGLTextureVolume::~OpenGLTextureVolume()
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67 {
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68 assert(texture_ != 0);
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69 glDeleteTextures(1, &texture_);
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70 }
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71
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72
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73 void OpenGLTextureVolume::Setup(Orthanc::PixelFormat format,
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74 unsigned int width,
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75 unsigned int height,
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76 unsigned int depth,
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77 bool isLinearInterpolation)
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78 {
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79 glActiveTexture(GL_TEXTURE0);
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80 glBindTexture(GL_TEXTURE_3D, texture_);
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81 ORTHANC_OPENGL_CHECK("glBindTexture(GL_TEXTURE_3D)");
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82
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83 GLenum sourceFormat, internalFormat, pixelType;
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84 OpenGLTexture::ConvertToOpenGLFormats(sourceFormat, internalFormat, pixelType, format);
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85
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86 glTexImage3D(GL_TEXTURE_3D, 0, internalFormat, width, height, depth,
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87 0, sourceFormat, pixelType, NULL);
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88 ORTHANC_OPENGL_CHECK("glTexImage3D()");
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89
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90 #if !defined(__EMSCRIPTEN__)
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91 /**
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92 * glGetTexLevelParameteriv() was introduced in OpenGL ES 3.1,
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93 * but WebGL 2 only supports OpenGL ES 3.0, so it is not
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94 * available in WebAssembly:
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95 * https://registry.khronos.org/OpenGL-Refpages/es3.1/html/glGetTexLevelParameter.xhtml
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96 **/
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97 GLint w, h, d;
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98 glGetTexLevelParameteriv(GL_TEXTURE_3D, 0, GL_TEXTURE_WIDTH, &w);
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99 glGetTexLevelParameteriv(GL_TEXTURE_3D, 0, GL_TEXTURE_HEIGHT, &h);
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100 glGetTexLevelParameteriv(GL_TEXTURE_3D, 0, GL_TEXTURE_DEPTH, &d);
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101 if (width != static_cast<unsigned int>(w) ||
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102 height != static_cast<unsigned int>(h) ||
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103 depth != static_cast<unsigned int>(d))
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104 {
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105 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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106 "Your GPU cannot create a 3D texture of size " +
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107 boost::lexical_cast<std::string>(width) + " x " +
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108 boost::lexical_cast<std::string>(height) + " x " +
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109 boost::lexical_cast<std::string>(depth));
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110 }
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111 #endif
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112
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113 format_ = format;
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114 width_ = width;
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115 height_ = height;
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116 depth_ = depth;
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117 isLinearInterpolation_ = isLinearInterpolation;
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118
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119 GLint interpolation = (isLinearInterpolation ? GL_LINEAR : GL_NEAREST);
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120 glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, interpolation);
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121 glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, interpolation);
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122 glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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123 glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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124 glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
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125 }
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126
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127
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128 void OpenGLTextureVolume::SetClampingToZero()
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129 {
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130 #if defined(__EMSCRIPTEN__)
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131 /**
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132 * This is because WebGL 2 derives from OpenGL ES 3.0, which
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133 * doesn't support GL_CLAMP_TO_BORDER, as can be seen here:
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134 * https://registry.khronos.org/OpenGL-Refpages/es3.0/html/glTexParameter.xhtml
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135 **/
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136 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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137 "OpenGLTextureArray::SetClampingToZero() is not available in WebGL 2");
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138 #else
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
139 ORTHANC_OPENGL_CHECK("Entering OpenGLTextureArray::SetClampingToZero()");
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
140
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
141 glBindTexture(GL_TEXTURE_3D, texture_);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
142 glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
143 glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
144
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
145 GLfloat colorfv[4] = { 0, 0, 0, 0 };
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
146 glTexParameterfv(texture_, GL_TEXTURE_BORDER_COLOR, colorfv);
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
147
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
148 ORTHANC_OPENGL_CHECK("Exiting OpenGLTextureArray::SetClampingToZero()");
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
149 #endif
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
150 }
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
151
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
152
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
153 void OpenGLTextureVolume::Bind(GLint location) const
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
154 {
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
155 glActiveTexture(GL_TEXTURE0);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
156 glBindTexture(GL_TEXTURE_3D, texture_);
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
157 glUniform1i(location, 0 /* texture unit */);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
158 }
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
159
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
160
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
161 void OpenGLTextureVolume::BindAsTextureUnit(GLint location,
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
162 unsigned int unit) const
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
163 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
164 if (unit >= 32)
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
165 {
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
166 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
167 }
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
168
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
169 assert(GL_TEXTURE0 + 1 == GL_TEXTURE1 &&
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
170 GL_TEXTURE0 + 31 == GL_TEXTURE31);
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
171
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
172 glActiveTexture(GL_TEXTURE0 + unit);
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
173 glBindTexture(GL_TEXTURE_3D, texture_);
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
174 glUniform1i(location, unit /* texture unit */);
cf3d85eb291c added class OpenGLTextureVolume
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parents:
diff changeset
175 }
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
176
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
177
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
178 void OpenGLTextureVolume::Upload(const Orthanc::ImageAccessor& image,
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
179 unsigned int z)
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
180 {
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
181 if (image.GetWidth() != width_ ||
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
182 image.GetHeight() != height_)
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
183 {
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
184 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageSize);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
185 }
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
186 else if (z >= depth_)
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
187 {
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
188 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
189 }
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
190 else if (image.GetPitch() != Orthanc::GetBytesPerPixel(format_) * width_)
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
191 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
192 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, "Minimal pitch is required for upload");
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
193 }
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
194 else if (width_ != 0 &&
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
195 height_ != 0)
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
196 {
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
197 GLenum sourceFormat, internalFormat, pixelType;
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
198 OpenGLTexture::ConvertToOpenGLFormats(sourceFormat, internalFormat, pixelType, image.GetFormat());
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
199
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
200 glBindTexture(GL_TEXTURE_3D, texture_);
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
201
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
202 #if defined(__EMSCRIPTEN__) && (ORTHANC_WEBGL2_HEAP_COMPAT == 1)
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
203 // Check out "OpenGLTexture.cpp" for an explanation
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
204 EM_ASM({
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
205 var ptr = emscriptenWebGLGetTexPixelData($5, $4, $2, $3, $0, $1);
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
206 GLctx.texSubImage3D(GLctx.TEXTURE_3D, 0, 0 /* x offset */, 0 /* y offset */,
cf3d85eb291c added class OpenGLTextureVolume
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diff changeset
207 $6, $2, $3, 1 /* depth */, $4, $5, ptr);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
208 },
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
209 image.GetConstBuffer(), // $0
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
210 internalFormat, // $1
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
211 image.GetWidth(), // $2
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
212 image.GetHeight(), // $3
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
213 sourceFormat, // $4
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
214 pixelType, // $5
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
215 z); // $6
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
216 #else
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
217 glTexSubImage3D(GL_TEXTURE_3D, 0, 0 /* x offset */, 0 /* y offset */, z /* z offset */,
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
218 width_, height_, 1 /* depth */, sourceFormat, pixelType, image.GetConstBuffer());
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
219 #endif
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
220 }
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
221 }
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
222
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
223
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
224 size_t OpenGLTextureVolume::GetMemoryBufferSize() const
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
225 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
226 return static_cast<size_t>(Orthanc::GetBytesPerPixel(format_)) * width_ * height_ * depth_;
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
227 }
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
228
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
229
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
230 void OpenGLTextureVolume::Download(void* targetBuffer,
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
231 size_t targetSize) const
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
232 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
233 if (targetSize != GetMemoryBufferSize())
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
234 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
235 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
236 }
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
237 else if (targetSize == 0)
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
238 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
239 return;
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
240 }
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
241 else if (targetBuffer == NULL)
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
242 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
243 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
244 }
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
245 else
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
246 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
247 #if 1 || defined(__EMSCRIPTEN__)
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
248 /**
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
249 * The "glGetTexImage()" function is unavailable in WebGL, it
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
250 * is necessary to use a framebuffer:
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
251 * https://stackoverflow.com/a/15064957
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
252 **/
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
253 OpenGLFramebuffer framebuffer(context_);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
254
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
255 const size_t sliceSize = targetSize / depth_;
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
256
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
257 Orthanc::Image tmp(GetFormat(), GetWidth(), GetHeight(), true);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
258 if (sliceSize != tmp.GetPitch() * height_)
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
259 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
260 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
261 }
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
262
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
263 for (unsigned int z = 0; z < depth_; z++)
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
264 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
265 framebuffer.ReadTexture(tmp, *this, z);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
266 memcpy(reinterpret_cast<uint8_t*>(targetBuffer) + z * sliceSize, tmp.GetBuffer(), sliceSize);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
267 }
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
268
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
269 #else
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
270 glBindTexture(GL_TEXTURE_3D, texture_);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
271
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
272 switch (format_)
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
273 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
274 case Orthanc::PixelFormat_Grayscale8:
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
275 glGetTexImage(GL_TEXTURE_3D, 0 /* base level */, GL_RED, GL_UNSIGNED_BYTE, targetBuffer);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
276 break;
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
277
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
278 case Orthanc::PixelFormat_RGB24:
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
279 glGetTexImage(GL_TEXTURE_3D, 0 /* base level */, GL_RGB, GL_UNSIGNED_BYTE, targetBuffer);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
280 break;
cf3d85eb291c added class OpenGLTextureVolume
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281
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282 case Orthanc::PixelFormat_RGBA32:
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283 glGetTexImage(GL_TEXTURE_3D, 0 /* base level */, GL_RGBA, GL_UNSIGNED_BYTE, targetBuffer);
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284 break;
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285
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286 case Orthanc::PixelFormat_Float32:
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287 glGetTexImage(GL_TEXTURE_3D, 0 /* base level */, GL_RED, GL_FLOAT, targetBuffer);
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288 break;
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289
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290 default:
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291 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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292 }
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293 #endif
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294 }
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295 }
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296
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297
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298 void OpenGLTextureVolume::Download(std::string& target) const
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299 {
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300 target.resize(GetMemoryBufferSize());
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301 Download(target);
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302 }
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303 }
cf3d85eb291c added class OpenGLTextureVolume
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304 }