Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/OpenGL/OpenGLTexture.cpp @ 2115:de049fd88697 deep-learning

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integration mainline->deep-learning
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 24 Jan 2024 16:44:40 +0100
parents fdb012c86a75 c23eef785569
children 2e050ec85379
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rev   line source
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2024 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2024 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 #include <cassert>
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37
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38 namespace OrthancStone
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39 {
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40 namespace OpenGL
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41 {
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42 OpenGLTexture::OpenGLTexture(OpenGL::IOpenGLContext& context) :
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43 context_(context),
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44 texture_(0),
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45 width_(0),
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46 height_(0),
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47 format_(Orthanc::PixelFormat_Grayscale8),
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48 isLinearInterpolation_(false)
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49 {
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50 if (context.IsContextLost())
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51 {
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52 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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53 "OpenGL context has been lost");
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54 }
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55
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56 // Generate a texture object
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57 glGenTextures(1, &texture_);
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58 ORTHANC_OPENGL_CHECK("glGenTextures()");
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59
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60 if (texture_ == 0)
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61 {
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62 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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63 "Cannot create an OpenGL texture");
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64 }
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65 }
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66
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67 OpenGLTexture::~OpenGLTexture()
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68 {
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69 try
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70 {
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71 if (!context_.IsContextLost())
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72 {
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73 assert(texture_ != 0);
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74 ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glDeleteTextures");
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75 glDeleteTextures(1, &texture_);
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76 }
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77 }
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78 catch (const Orthanc::OrthancException& e)
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79 {
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80 if (e.HasDetails())
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81 {
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82 LOG(ERROR) << "OrthancException in ~OpenGLTexture: " << e.What() << " Details: " << e.GetDetails();
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83 }
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84 else
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85 {
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86 LOG(ERROR) << "OrthancException in ~OpenGLTexture: " << e.What();
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87 }
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88 }
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89 catch (const std::exception& e)
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90 {
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91 LOG(ERROR) << "std::exception in ~OpenGLTexture: " << e.what();
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92 }
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93 catch (...)
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94 {
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95 LOG(ERROR) << "Unknown exception in ~OpenGLTexture";
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96 }
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97 }
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98
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99 void OpenGLTexture::Setup(Orthanc::PixelFormat format,
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100 unsigned int width,
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101 unsigned int height,
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102 bool isLinearInterpolation,
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103 const void* data)
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104 {
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105 if (context_.IsContextLost())
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106 {
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107 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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108 "OpenGL context has been lost");
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109 }
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110 else
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111 {
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112 glPixelStorei(GL_UNPACK_ALIGNMENT, 1); // Disable byte-alignment restriction
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113
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114 // Bind it
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115 glActiveTexture(GL_TEXTURE0);
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116 glBindTexture(GL_TEXTURE_2D, texture_);
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117
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118 GLenum sourceFormat, internalFormat, pixelType;
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119 ConvertToOpenGLFormats(sourceFormat, internalFormat, pixelType, format);
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120
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121 format_ = format;
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122 width_ = width;
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123 height_ = height;
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124 isLinearInterpolation_ = isLinearInterpolation;
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125
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126 GLint interpolation = (isLinearInterpolation ? GL_LINEAR : GL_NEAREST);
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127
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128 // Load the texture from the image buffer
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129
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130 #if defined(__EMSCRIPTEN__) && (ORTHANC_WEBGL2_HEAP_COMPAT == 1)
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131 /**
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132 * This compatibility implementation seems to be necessary
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133 * with WebGL2, at least in Web workers. In such a situation,
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134 * the calls that are referred to as the "new garbage-free
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diff changeset
135 * entry points" in the Emscripten source file
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136 * "upstream/emscripten/src/library_webgl.js" seem to fail,
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diff changeset
137 * because the "Uint8Array" and "Float32Array" seem to be
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diff changeset
138 * incorrectly created. This compatibility reverts to the
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139 * WebGL1 behavior of "library_webgl.js", which requires the
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diff changeset
140 * function "emscriptenWebGLGetTexPixelData" that is defined
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diff changeset
141 * in "upstream/emscripten/src/library_webgl.js" to be
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142 * exported in the linker using option
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diff changeset
143 * "EXTRA_EXPORTED_RUNTIME_METHODS" or
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diff changeset
144 * "EXPORTED_RUNTIME_METHODS".
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diff changeset
145 **/
a05b03f45289 added ORTHANC_WEBGL2_HEAP_COMPAT
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diff changeset
146 EM_ASM({
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diff changeset
147 var ptr = $0 ? emscriptenWebGLGetTexPixelData($5, $4, $2, $3, $0, $1) : null;
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148 GLctx.texImage2D(GLctx.TEXTURE_2D, 0, $1, $2, $3, 0, $4, $5, ptr);
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diff changeset
149 },
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diff changeset
150 data, // $0
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diff changeset
151 internalFormat, // $1
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diff changeset
152 width, // $2
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153 height, // $3
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154 sourceFormat, // $4
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155 pixelType); // $5
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diff changeset
156 #else
2034
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157 glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height,
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158 0, sourceFormat, pixelType, data);
2048
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diff changeset
159 #endif
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diff changeset
160
2046
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diff changeset
161 ORTHANC_OPENGL_CHECK("glTexImage2D()");
2036
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diff changeset
162
2043
f3d756e5503f fix build on wasm
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diff changeset
163 #if !defined(__EMSCRIPTEN__)
2046
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164 /**
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diff changeset
165 * glGetTexLevelParameteriv() was introduced in OpenGL ES 3.1,
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diff changeset
166 * but WebGL 2 only supports OpenGL ES 3.0, so it is not
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diff changeset
167 * available in WebAssembly:
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168 * https://registry.khronos.org/OpenGL-Refpages/es3.1/html/glGetTexLevelParameter.xhtml
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diff changeset
169 **/
2036
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diff changeset
170 GLint w, h;
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diff changeset
171 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
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diff changeset
172 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &h);
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diff changeset
173 if (width != static_cast<unsigned int>(w) ||
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diff changeset
174 height != static_cast<unsigned int>(h))
444527d34647 sanity check in textures
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diff changeset
175 {
444527d34647 sanity check in textures
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176 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
444527d34647 sanity check in textures
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diff changeset
177 "Your GPU cannot create a texture of size " +
444527d34647 sanity check in textures
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diff changeset
178 boost::lexical_cast<std::string>(width) + " x " +
444527d34647 sanity check in textures
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diff changeset
179 boost::lexical_cast<std::string>(height));
444527d34647 sanity check in textures
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diff changeset
180 }
2043
f3d756e5503f fix build on wasm
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diff changeset
181 #endif
2036
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diff changeset
182
947
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diff changeset
183 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, interpolation);
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parents: 616
diff changeset
184 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, interpolation);
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Benjamin Golinvaux <bgo@osimis.io>
parents: 616
diff changeset
185 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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diff changeset
186 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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diff changeset
187 }
579
fadacfbf5538 OpenGL programs and textures
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188 }
fadacfbf5538 OpenGL programs and textures
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parents:
diff changeset
189
2034
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diff changeset
190 void OpenGLTexture::Load(const Orthanc::ImageAccessor& image,
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diff changeset
191 bool isLinearInterpolation)
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diff changeset
192 {
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193 if (image.GetPitch() != image.GetBytesPerPixel() * image.GetWidth())
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diff changeset
194 {
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195 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
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196 "Pitch is not the same as the row size");
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diff changeset
197 }
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diff changeset
198 else
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diff changeset
199 {
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diff changeset
200 Setup(image.GetFormat(), image.GetWidth(), image.GetHeight(),
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diff changeset
201 isLinearInterpolation, image.GetConstBuffer());
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parents: 2033
diff changeset
202 }
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parents: 2033
diff changeset
203 }
579
fadacfbf5538 OpenGL programs and textures
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parents:
diff changeset
204
fadacfbf5538 OpenGL programs and textures
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parents:
diff changeset
205
2039
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diff changeset
206 void OpenGLTexture::Bind(GLint location) const
579
fadacfbf5538 OpenGL programs and textures
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parents:
diff changeset
207 {
fadacfbf5538 OpenGL programs and textures
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diff changeset
208 glActiveTexture(GL_TEXTURE0);
fadacfbf5538 OpenGL programs and textures
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parents:
diff changeset
209 glBindTexture(GL_TEXTURE_2D, texture_);
fadacfbf5538 OpenGL programs and textures
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parents:
diff changeset
210 glUniform1i(location, 0 /* texture unit */);
fadacfbf5538 OpenGL programs and textures
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parents:
diff changeset
211 }
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
212
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
213
2042
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
214 void OpenGLTexture::BindAsTextureUnit(GLint location,
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
215 unsigned int unit) const
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
216 {
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
217 if (unit >= 32)
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
218 {
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
219 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
220 }
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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parents: 2039
diff changeset
221
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
222 assert(GL_TEXTURE0 + 1 == GL_TEXTURE1 &&
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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parents: 2039
diff changeset
223 GL_TEXTURE0 + 31 == GL_TEXTURE31);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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parents: 2039
diff changeset
224
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
225 glActiveTexture(GL_TEXTURE0 + unit);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
226 glBindTexture(GL_TEXTURE_2D, texture_);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
227 glUniform1i(location, unit /* texture unit */);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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diff changeset
228 }
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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parents: 2039
diff changeset
229
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
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parents: 2039
diff changeset
230
2039
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parents: 2037
diff changeset
231 Orthanc::ImageAccessor* OpenGLTexture::Download(Orthanc::PixelFormat format) const
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
232 {
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
233 if (context_.IsContextLost())
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
234 {
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
235 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
236 "OpenGL context is lost");
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
237 }
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
238
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
239 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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parents: 2032
diff changeset
240 assert(target->GetPitch() == width_ * Orthanc::GetBytesPerPixel(format));
2032
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
241
2044
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diff changeset
242 #if defined(__EMSCRIPTEN__)
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diff changeset
243 /**
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diff changeset
244 * The "glGetTexImage()" is unavailable in WebGL, it is
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2043
diff changeset
245 * necessary to use a framebuffer:
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parents: 2043
diff changeset
246 * https://stackoverflow.com/a/15064957
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diff changeset
247 **/
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diff changeset
248 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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diff changeset
249
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2043
diff changeset
250 #else
2032
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
251 glBindTexture(GL_TEXTURE_2D, texture_);
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
252
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
253 switch (format)
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
254 {
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
255 case Orthanc::PixelFormat_Grayscale8:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
256 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RED, GL_UNSIGNED_BYTE, target->GetBuffer());
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
257 break;
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
258
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
259 case Orthanc::PixelFormat_RGB24:
d10bab7cc396 added OpenGLTexture::Download()
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diff changeset
260 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
261 break;
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
262
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
263 case Orthanc::PixelFormat_RGBA32:
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
264 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
265 break;
d10bab7cc396 added OpenGLTexture::Download()
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parents: 1871
diff changeset
266
2033
23b0a42eea85 added support for floating-point images in OpenGLTexture
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parents: 2032
diff changeset
267 case Orthanc::PixelFormat_Float32:
23b0a42eea85 added support for floating-point images in OpenGLTexture
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parents: 2032
diff changeset
268 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
269 break;
23b0a42eea85 added support for floating-point images in OpenGLTexture
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parents: 2032
diff changeset
270
2032
d10bab7cc396 added OpenGLTexture::Download()
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271 default:
d10bab7cc396 added OpenGLTexture::Download()
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272 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
d10bab7cc396 added OpenGLTexture::Download()
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273 }
2044
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274 #endif
2032
d10bab7cc396 added OpenGLTexture::Download()
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275
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276 return target.release();
d10bab7cc396 added OpenGLTexture::Download()
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277 }
2035
a73a8415780f added OpenGLTexture::SetClampingToZero()
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278
a73a8415780f added OpenGLTexture::SetClampingToZero()
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279
a73a8415780f added OpenGLTexture::SetClampingToZero()
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280 void OpenGLTexture::SetClampingToZero()
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281 {
2056
66c130af0d3c OpenGLTexture::SetClampingToZero() is not available in wasm
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282 #if defined(__EMSCRIPTEN__)
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283 /**
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284 * This is because WebGL 2 derives from OpenGL ES 3.0, which
66c130af0d3c OpenGLTexture::SetClampingToZero() is not available in wasm
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285 * doesn't support GL_CLAMP_TO_BORDER, as can be seen here:
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286 * https://registry.khronos.org/OpenGL-Refpages/es3.0/html/glTexParameter.xhtml
66c130af0d3c OpenGLTexture::SetClampingToZero() is not available in wasm
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287 **/
2060
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
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288 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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289 "OpenGLTextureArray::SetClampingToZero() is not available in WebGL 2");
2056
66c130af0d3c OpenGLTexture::SetClampingToZero() is not available in wasm
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290 #else
2060
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291 ORTHANC_OPENGL_CHECK("Entering OpenGLTexture::SetClampingToZero()");
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292
2035
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293 glBindTexture(GL_TEXTURE_2D, texture_);
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294 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
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295 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
a73a8415780f added OpenGLTexture::SetClampingToZero()
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296
a73a8415780f added OpenGLTexture::SetClampingToZero()
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297 GLfloat colorfv[4] = { 0, 0, 0, 0 };
a73a8415780f added OpenGLTexture::SetClampingToZero()
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298 glTextureParameterfv(texture_, GL_TEXTURE_BORDER_COLOR, colorfv);
2060
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
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299
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
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300 ORTHANC_OPENGL_CHECK("Exiting OpenGLTexture::SetClampingToZero()");
2056
66c130af0d3c OpenGLTexture::SetClampingToZero() is not available in wasm
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301 #endif
2035
a73a8415780f added OpenGLTexture::SetClampingToZero()
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302 }
2037
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
303
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
304
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
305 void OpenGLTexture::ConvertToOpenGLFormats(GLenum& sourceFormat,
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
306 GLenum& internalFormat,
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
307 GLenum& pixelType,
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
308 Orthanc::PixelFormat format)
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
309 {
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
310 switch (format)
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
311 {
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
312 case Orthanc::PixelFormat_Grayscale8:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
313 sourceFormat = GL_RED;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
314 internalFormat = GL_RED;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
315 pixelType = GL_UNSIGNED_BYTE;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
316 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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parents: 2036
diff changeset
317
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
318 case Orthanc::PixelFormat_RGB24:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
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diff changeset
319 sourceFormat = GL_RGB;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
320 internalFormat = GL_RGB;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
321 pixelType = GL_UNSIGNED_BYTE;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
322 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
323
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
324 case Orthanc::PixelFormat_RGBA32:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
325 sourceFormat = GL_RGBA;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
326 internalFormat = GL_RGBA;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
327 pixelType = GL_UNSIGNED_BYTE;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
328 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
329
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
330 case Orthanc::PixelFormat_Float32:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
331 sourceFormat = GL_RED;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
332 internalFormat = GL_R32F; // Don't use "GL_RED" here, as it clamps to [0,1]
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
333 pixelType = GL_FLOAT;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
334 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
335
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
336 default:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
337 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
338 "No support for this format in OpenGL textures: " +
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
339 std::string(EnumerationToString(format)));
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
340 }
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
341 }
579
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
342 }
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
343 }