Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/OpenGL/OpenGLFramebuffer.cpp @ 2066:cf3d85eb291c deep-learning

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added class OpenGLTextureVolume
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 04 May 2023 17:18:14 +0200
parents 4e31d76c7ecd
children
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2060
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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 "OpenGLFramebuffer.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 "OpenGLTexture.h"
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33 #include "OpenGLTextureArray.h"
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34 #include "OpenGLTextureVolume.h"
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35
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36 #include <OrthancException.h>
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37
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38
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39 namespace OrthancStone
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40 {
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41 namespace OpenGL
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42 {
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43 void OpenGLFramebuffer::SetupTextureTarget()
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44 {
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45 GLenum drawBuffers[1] = { GL_COLOR_ATTACHMENT0 };
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46 glDrawBuffers(1, drawBuffers);
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47
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48 if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
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49 {
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50 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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51 "Incomplete setup of an OpenGL framebuffer");
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52 }
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53 }
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54
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55
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56 void OpenGLFramebuffer::ReadContent(Orthanc::ImageAccessor& target)
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57 {
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58 if (target.GetPitch() != target.GetWidth() * Orthanc::GetBytesPerPixel(target.GetFormat()) ||
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59 target.GetBuffer() == NULL)
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60 {
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61 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
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62 "Image must have minimal pitch");
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63 }
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64
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65 if (glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE)
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66 {
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67 ORTHANC_OPENGL_CHECK("glCheckFramebufferStatus()");
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68
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69 glViewport(0, 0, target.GetWidth(), target.GetHeight());
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70
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71 GLenum sourceFormat, internalFormat, pixelType;
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72 OpenGLTexture::ConvertToOpenGLFormats(sourceFormat, internalFormat, pixelType, target.GetFormat());
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73
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74 #if defined(__EMSCRIPTEN__) && (ORTHANC_WEBGL2_HEAP_COMPAT == 1)
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75 // Check out "OpenGLTexture.cpp" for an explanation
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76
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77 int framebufferFormat, framebufferType;
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78 glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT, &framebufferFormat);
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79 glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE, &framebufferType);
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80
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81 switch (target.GetFormat())
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82 {
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83 case Orthanc::PixelFormat_RGBA32:
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84 if (sourceFormat != GL_RGBA ||
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85 internalFormat != GL_RGBA ||
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86 pixelType != GL_UNSIGNED_BYTE ||
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87 framebufferFormat != GL_RGBA ||
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88 framebufferType != GL_UNSIGNED_BYTE)
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89 {
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90 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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91 }
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92
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93 EM_ASM({
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94 var ptr = emscriptenWebGLGetTexPixelData(GLctx.UNSIGNED_BYTE, GLctx.RGBA, $1, $2, $0, GLctx.RGBA);
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95 GLctx.readPixels(0, 0, $1, $2, GLctx.RGBA, GLctx.UNSIGNED_BYTE, ptr);
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96 },
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97 target.GetBuffer(), // $0
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98 target.GetWidth(), // $1
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99 target.GetHeight()); // $2
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100 break;
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101
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102 case Orthanc::PixelFormat_Float32:
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103 // In Mozilla Firefox, "Float32" is not available as such. We
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104 // have to download an RGBA image in Float32.
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105 if (sourceFormat != GL_RED ||
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106 internalFormat != GL_R32F ||
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107 pixelType != GL_FLOAT ||
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108 framebufferType != GL_FLOAT)
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109 {
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110 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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111 }
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112
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113 switch (framebufferFormat)
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114 {
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115 case GL_RGBA:
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116 // This is Mozilla Firefox
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117 EM_ASM({
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118 var tmp = new Float32Array($1 * $2 * 4);
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119 GLctx.readPixels(0, 0, $1, $2, GLctx.RGBA, GLctx.FLOAT, tmp);
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120
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121 // From RGBA to RED
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122 var ptr = emscriptenWebGLGetTexPixelData(GLctx.FLOAT, GLctx.RED, $1, $2, $0, GLctx.R32F);
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123 for (var i = 0; i < $1 * $2; i++) {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
124 ptr[i] = tmp[4 * i];
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
125 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
126 },
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
127 target.GetBuffer(), // $0
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
128 target.GetWidth(), // $1
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
129 target.GetHeight()); // $2
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
130 break;
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
131
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
132 case GL_RED:
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
133 // This is Chromium
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
134 EM_ASM({
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
135 var ptr = emscriptenWebGLGetTexPixelData(GLctx.FLOAT, GLctx.RED, $1, $2, $0, GLctx.R32F);
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
136 GLctx.readPixels(0, 0, $1, $2, GLctx.RED, GLctx.FLOAT, ptr);
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
137 },
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
138 target.GetBuffer(), // $0
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
139 target.GetWidth(), // $1
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
140 target.GetHeight()); // $2
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
141 break;
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
142
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
143 default:
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
144 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
145 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
146 break;
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
147
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
148 default:
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
149 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
150 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
151 #else
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
152 glReadPixels(0, 0, target.GetWidth(), target.GetHeight(), sourceFormat, pixelType, target.GetBuffer());
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
153 #endif
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
154
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
155 ORTHANC_OPENGL_CHECK("glReadPixels()");
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
156 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
157 else
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
158 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
159 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
160 "Incomplete setup of an OpenGL framebuffer");
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
161 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
162 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
163
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
164
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
165 OpenGLFramebuffer::OpenGLFramebuffer(IOpenGLContext& context) :
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
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diff changeset
166 context_(context),
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
167 framebuffer_(0)
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
168 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
169 if (context.IsContextLost())
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
170 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
171 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
172 "OpenGL context has been lost");
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
173 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
174
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
175 glGenFramebuffers(1, &framebuffer_);
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
176 if (framebuffer_ == 0)
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
177 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
178 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
179 "Cannot create an OpenGL framebuffer");
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
180 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
181
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
182 glBindFramebuffer(GL_FRAMEBUFFER, framebuffer_);
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
183 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
184
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
185
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
186 OpenGLFramebuffer::~OpenGLFramebuffer()
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
187 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
188 glDeleteFramebuffers(1, &framebuffer_);
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
189 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
190
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
191
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
192 void OpenGLFramebuffer::SetTarget(OpenGLTexture& target)
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
193 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
194 glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, target.GetId(), 0);
2064
4e31d76c7ecd making ImageProcessingProgram compatible with 3D volumes
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2060
diff changeset
195 ORTHANC_OPENGL_CHECK("glFramebufferTexture2D()");
4e31d76c7ecd making ImageProcessingProgram compatible with 3D volumes
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2060
diff changeset
196
2060
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
197 SetupTextureTarget();
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
198 glViewport(0, 0, target.GetWidth(), target.GetHeight());
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
199 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
200
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
201
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
202 void OpenGLFramebuffer::SetTarget(OpenGLTextureArray& target,
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
203 unsigned int layer)
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
204 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
205 if (layer >= target.GetDepth())
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
206 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
207 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
208 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
209 else
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
210 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
211 glFramebufferTextureLayer(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target.GetId(), 0, layer);
2064
4e31d76c7ecd making ImageProcessingProgram compatible with 3D volumes
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2060
diff changeset
212 ORTHANC_OPENGL_CHECK("glFramebufferTextureLayer()");
4e31d76c7ecd making ImageProcessingProgram compatible with 3D volumes
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2060
diff changeset
213
2060
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
214 SetupTextureTarget();
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
215 glViewport(0, 0, target.GetWidth(), target.GetHeight());
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
216 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
217 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
218
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
219
2066
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
220 void OpenGLFramebuffer::SetTarget(OpenGLTextureVolume& target,
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
221 unsigned int z)
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
222 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
223 if (z >= target.GetDepth())
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
224 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
225 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
226 }
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
227 else
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
228 {
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
229 // Warning: "glFramebufferTexture3D()" is not available in WebGL 2
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
230 glFramebufferTextureLayer(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target.GetId(), 0, z);
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
231 ORTHANC_OPENGL_CHECK("glFramebufferTextureLayer()");
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
232
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
233 SetupTextureTarget();
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
234 glViewport(0, 0, target.GetWidth(), target.GetHeight());
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
235 }
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
236 }
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
237
cf3d85eb291c added class OpenGLTextureVolume
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2064
diff changeset
238
2060
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
239 void OpenGLFramebuffer::ReadTexture(Orthanc::ImageAccessor& target,
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
240 const OpenGLTexture& source)
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
241 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
242 if (target.GetWidth() != source.GetWidth() ||
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
243 target.GetHeight() != source.GetHeight())
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
244 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
245 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageSize);
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
246 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
247 else if (target.GetFormat() != source.GetFormat())
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
248 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
249 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
250 }
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
251 else
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
252 {
86e0e92a2e0d added OpenGLTextureArray and OpenGLFramebuffer
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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253 glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, source.GetId(), 0);
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254 ORTHANC_OPENGL_CHECK("glFramebufferTexture2D()");
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255 ReadContent(target);
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256 }
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257 }
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258
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259
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260 void OpenGLFramebuffer::ReadTexture(Orthanc::ImageAccessor& target,
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261 const OpenGLTextureArray& source,
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262 unsigned int layer)
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263 {
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264 if (target.GetWidth() != source.GetWidth() ||
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265 target.GetHeight() != source.GetHeight())
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266 {
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267 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageSize);
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268 }
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269 else if (target.GetFormat() != source.GetFormat())
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270 {
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271 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
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272 }
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273 else if (layer >= source.GetDepth())
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274 {
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275 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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276 }
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277 else
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278 {
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279 glFramebufferTextureLayer(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, source.GetId(), 0, layer);
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280 ORTHANC_OPENGL_CHECK("glFramebufferTextureLayer()");
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281 ReadContent(target);
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282 }
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283 }
2066
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284
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285
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286 void OpenGLFramebuffer::ReadTexture(Orthanc::ImageAccessor& target,
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287 const OpenGLTextureVolume& source,
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288 unsigned int z)
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289 {
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290 if (target.GetWidth() != source.GetWidth() ||
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291 target.GetHeight() != source.GetHeight())
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292 {
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293 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageSize);
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294 }
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295 else if (target.GetFormat() != source.GetFormat())
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296 {
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297 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
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298 }
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299 else if (z >= source.GetDepth())
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300 {
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301 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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302 }
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303 else
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304 {
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305 // Warning: "glFramebufferTexture3D()" is not available in WebGL 2
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306 glFramebufferTextureLayer(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, source.GetId(), 0, z);
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307 ORTHANC_OPENGL_CHECK("glFramebufferTextureLayer()");
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308
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309 ReadContent(target);
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310 }
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311 }
2060
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312 }
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313 }