Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/OpenGL/OpenGLTexture.cpp @ 2046:98b44468332e deep-learning

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 06 Mar 2023 09:04:10 +0100
parents e5c812a36746
children 0b596428e60c
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #include "OpenGLTexture.h"
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25 #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 namespace OrthancStone
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32 {
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33 namespace OpenGL
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34 {
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35 OpenGLTexture::OpenGLTexture(OpenGL::IOpenGLContext& context) :
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36 texture_(0),
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37 width_(0),
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38 height_(0),
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39 context_(context)
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40 {
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41 if (!context_.IsContextLost())
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42 {
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43 // Generate a texture object
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44 glGenTextures(1, &texture_);
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45 ORTHANC_OPENGL_CHECK("glGenTextures()");
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46
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47 if (texture_ == 0)
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48 {
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49 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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50 "Cannot create an OpenGL texture");
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51 }
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52 }
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53 }
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54
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55 OpenGLTexture::~OpenGLTexture()
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56 {
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57 try
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58 {
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59 if (!context_.IsContextLost())
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60 {
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61 assert(texture_ != 0);
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62 ORTHANC_OPENGL_TRACE_CURRENT_CONTEXT("About to call glDeleteTextures");
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63 glDeleteTextures(1, &texture_);
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64 }
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65 }
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66 catch (const Orthanc::OrthancException& e)
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67 {
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68 if (e.HasDetails())
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69 {
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70 LOG(ERROR) << "OrthancException in ~OpenGLTexture: " << e.What() << " Details: " << e.GetDetails();
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71 }
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72 else
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73 {
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74 LOG(ERROR) << "OrthancException in ~OpenGLTexture: " << e.What();
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75 }
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76 }
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77 catch (const std::exception& e)
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78 {
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79 LOG(ERROR) << "std::exception in ~OpenGLTexture: " << e.what();
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80 }
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81 catch (...)
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82 {
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83 LOG(ERROR) << "Unknown exception in ~OpenGLTexture";
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84 }
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85 }
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86
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87 void OpenGLTexture::Setup(Orthanc::PixelFormat format,
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88 unsigned int width,
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89 unsigned int height,
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90 bool isLinearInterpolation,
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91 const void* data)
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92 {
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93 if (context_.IsContextLost())
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94 {
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95 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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96 "OpenGL context has been lost");
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97 }
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98 else
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99 {
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100 glPixelStorei(GL_UNPACK_ALIGNMENT, 1); // Disable byte-alignment restriction
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101
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102 // Bind it
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103 glActiveTexture(GL_TEXTURE0);
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104 glBindTexture(GL_TEXTURE_2D, texture_);
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105
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106 GLenum sourceFormat, internalFormat, pixelType;
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107 ConvertToOpenGLFormats(sourceFormat, internalFormat, pixelType, format);
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108
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109 width_ = width;
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110 height_ = height;
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111
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112 GLint interpolation = (isLinearInterpolation ? GL_LINEAR : GL_NEAREST);
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113
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114 // Load the texture from the image buffer
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115 glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height,
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116 0, sourceFormat, pixelType, data);
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117 ORTHANC_OPENGL_CHECK("glTexImage2D()");
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118
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119 #if !defined(__EMSCRIPTEN__)
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120 /**
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121 * glGetTexLevelParameteriv() was introduced in OpenGL ES 3.1,
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122 * but WebGL 2 only supports OpenGL ES 3.0, so it is not
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123 * available in WebAssembly:
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124 * https://registry.khronos.org/OpenGL-Refpages/es3.1/html/glGetTexLevelParameter.xhtml
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125 **/
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126 GLint w, h;
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127 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &w);
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128 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &h);
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129 if (width != static_cast<unsigned int>(w) ||
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130 height != static_cast<unsigned int>(h))
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131 {
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132 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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133 "Your GPU cannot create a texture of size " +
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134 boost::lexical_cast<std::string>(width) + " x " +
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135 boost::lexical_cast<std::string>(height));
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136 }
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137 #endif
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444527d34647 sanity check in textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2035
diff changeset
138
947
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 616
diff changeset
139 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, interpolation);
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 616
diff changeset
140 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, interpolation);
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 616
diff changeset
141 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 616
diff changeset
142 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
1091b2adeb5a Fixed animation frame stopping when returning false + big work on the OpenGL
Benjamin Golinvaux <bgo@osimis.io>
parents: 616
diff changeset
143 }
579
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
144 }
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
145
2034
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
146 void OpenGLTexture::Load(const Orthanc::ImageAccessor& image,
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
147 bool isLinearInterpolation)
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
148 {
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
149 if (image.GetPitch() != image.GetBytesPerPixel() * image.GetWidth())
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
150 {
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
151 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
152 "Pitch is not the same as the row size");
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
153 }
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
154 else
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
155 {
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
156 Setup(image.GetFormat(), image.GetWidth(), image.GetHeight(),
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
157 isLinearInterpolation, image.GetConstBuffer());
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
158 }
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
159 }
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2033
diff changeset
160
579
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
161
2039
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2037
diff changeset
162 void OpenGLTexture::Bind(GLint location) const
579
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
163 {
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
164 glActiveTexture(GL_TEXTURE0);
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
165 glBindTexture(GL_TEXTURE_2D, texture_);
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
166 glUniform1i(location, 0 /* texture unit */);
fadacfbf5538 OpenGL programs and textures
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
167 }
2032
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
168
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
169
2042
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
170 void OpenGLTexture::BindAsTextureUnit(GLint location,
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
171 unsigned int unit) const
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
172 {
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
173 if (unit >= 32)
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
174 {
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
175 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
176 }
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
177
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
178 assert(GL_TEXTURE0 + 1 == GL_TEXTURE1 &&
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
179 GL_TEXTURE0 + 31 == GL_TEXTURE31);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
180
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
181 glActiveTexture(GL_TEXTURE0 + unit);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
182 glBindTexture(GL_TEXTURE_2D, texture_);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
183 glUniform1i(location, unit /* texture unit */);
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
184 }
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
185
0fa4c0ca429d added OpenGLTexture::BindAsTextureUnit()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2039
diff changeset
186
2039
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2037
diff changeset
187 Orthanc::ImageAccessor* OpenGLTexture::Download(Orthanc::PixelFormat format) const
2032
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
188 {
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
189 if (context_.IsContextLost())
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
190 {
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
191 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
192 "OpenGL context is lost");
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
193 }
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
194
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
195 std::unique_ptr<Orthanc::ImageAccessor> target(new Orthanc::Image(format, width_, height_, true));
2033
23b0a42eea85 added support for floating-point images in OpenGLTexture
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2032
diff changeset
196 assert(target->GetPitch() == width_ * Orthanc::GetBytesPerPixel(format));
2032
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
197
2044
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2043
diff changeset
198 #if defined(__EMSCRIPTEN__)
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2043
diff changeset
199 /**
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2043
diff changeset
200 * The "glGetTexImage()" is unavailable in WebGL, it is
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2043
diff changeset
201 * necessary to use a framebuffer:
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2043
diff changeset
202 * https://stackoverflow.com/a/15064957
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2043
diff changeset
203 **/
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2043
diff changeset
204 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2043
diff changeset
205
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2043
diff changeset
206 #else
2032
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
207 glBindTexture(GL_TEXTURE_2D, texture_);
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
208
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
209 switch (format)
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
210 {
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
211 case Orthanc::PixelFormat_Grayscale8:
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
212 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RED, GL_UNSIGNED_BYTE, target->GetBuffer());
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
213 break;
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
214
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
215 case Orthanc::PixelFormat_RGB24:
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
216 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RGB, GL_UNSIGNED_BYTE, target->GetBuffer());
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
217 break;
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
218
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
219 case Orthanc::PixelFormat_RGBA32:
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
220 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RGBA, GL_UNSIGNED_BYTE, target->GetBuffer());
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
221 break;
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
222
2033
23b0a42eea85 added support for floating-point images in OpenGLTexture
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2032
diff changeset
223 case Orthanc::PixelFormat_Float32:
23b0a42eea85 added support for floating-point images in OpenGLTexture
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2032
diff changeset
224 glGetTexImage(GL_TEXTURE_2D, 0 /* base level */, GL_RED, GL_FLOAT, target->GetBuffer());
23b0a42eea85 added support for floating-point images in OpenGLTexture
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2032
diff changeset
225 break;
23b0a42eea85 added support for floating-point images in OpenGLTexture
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2032
diff changeset
226
2032
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
227 default:
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
228 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
229 }
2044
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2043
diff changeset
230 #endif
2032
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
231
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
232 return target.release();
d10bab7cc396 added OpenGLTexture::Download()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1871
diff changeset
233 }
2035
a73a8415780f added OpenGLTexture::SetClampingToZero()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2034
diff changeset
234
a73a8415780f added OpenGLTexture::SetClampingToZero()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2034
diff changeset
235
a73a8415780f added OpenGLTexture::SetClampingToZero()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2034
diff changeset
236 void OpenGLTexture::SetClampingToZero()
a73a8415780f added OpenGLTexture::SetClampingToZero()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2034
diff changeset
237 {
a73a8415780f added OpenGLTexture::SetClampingToZero()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2034
diff changeset
238 glBindTexture(GL_TEXTURE_2D, texture_);
a73a8415780f added OpenGLTexture::SetClampingToZero()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2034
diff changeset
239 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
a73a8415780f added OpenGLTexture::SetClampingToZero()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2034
diff changeset
240 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
a73a8415780f added OpenGLTexture::SetClampingToZero()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2034
diff changeset
241
a73a8415780f added OpenGLTexture::SetClampingToZero()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2034
diff changeset
242 GLfloat colorfv[4] = { 0, 0, 0, 0 };
a73a8415780f added OpenGLTexture::SetClampingToZero()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2034
diff changeset
243 glTextureParameterfv(texture_, GL_TEXTURE_BORDER_COLOR, colorfv);
a73a8415780f added OpenGLTexture::SetClampingToZero()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2034
diff changeset
244 }
2037
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
245
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
246
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
247 void OpenGLTexture::ConvertToOpenGLFormats(GLenum& sourceFormat,
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
248 GLenum& internalFormat,
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
249 GLenum& pixelType,
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
250 Orthanc::PixelFormat format)
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
251 {
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
252 switch (format)
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
253 {
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
254 case Orthanc::PixelFormat_Grayscale8:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
255 sourceFormat = GL_RED;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
256 internalFormat = GL_RED;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
257 pixelType = GL_UNSIGNED_BYTE;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
258 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
259
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
260 case Orthanc::PixelFormat_RGB24:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
261 sourceFormat = GL_RGB;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
262 internalFormat = GL_RGB;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
263 pixelType = GL_UNSIGNED_BYTE;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
264 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
265
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
266 case Orthanc::PixelFormat_RGBA32:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
267 sourceFormat = GL_RGBA;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
268 internalFormat = GL_RGBA;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
269 pixelType = GL_UNSIGNED_BYTE;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
270 break;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
271
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
272 case Orthanc::PixelFormat_Float32:
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
273 sourceFormat = GL_RED;
d81a7157a846 added OpenGLTexture::ConvertToOpenGLFormats()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2036
diff changeset
274 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
275 pixelType = GL_FLOAT;
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276 break;
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277
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278 default:
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279 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
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280 "No support for this format in OpenGL textures: " +
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281 std::string(EnumerationToString(format)));
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282 }
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283 }
579
fadacfbf5538 OpenGL programs and textures
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284 }
fadacfbf5538 OpenGL programs and textures
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285 }