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comparison OrthancStone/Sources/OpenGL/OpenGLTexture.cpp @ 2037:d81a7157a846 deep-learning

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added OpenGLTexture::ConvertToOpenGLFormats()
author Sebastien Jodogne <s.jodogne@gmail.com>
date Sat, 28 Jan 2023 12:55:34 +0100
parents 444527d34647
children e0906b7c67b9
comparison
equal deleted inserted replaced
2036:444527d34647 2037:d81a7157a846
100 // Bind it 100 // Bind it
101 glActiveTexture(GL_TEXTURE0); 101 glActiveTexture(GL_TEXTURE0);
102 glBindTexture(GL_TEXTURE_2D, texture_); 102 glBindTexture(GL_TEXTURE_2D, texture_);
103 103
104 GLenum sourceFormat, internalFormat, pixelType; 104 GLenum sourceFormat, internalFormat, pixelType;
105 105 ConvertToOpenGLFormats(sourceFormat, internalFormat, pixelType, format);
106 switch (format)
107 {
108 case Orthanc::PixelFormat_Grayscale8:
109 sourceFormat = GL_RED;
110 internalFormat = GL_RED;
111 pixelType = GL_UNSIGNED_BYTE;
112 break;
113
114 case Orthanc::PixelFormat_RGB24:
115 sourceFormat = GL_RGB;
116 internalFormat = GL_RGB;
117 pixelType = GL_UNSIGNED_BYTE;
118 break;
119
120 case Orthanc::PixelFormat_RGBA32:
121 sourceFormat = GL_RGBA;
122 internalFormat = GL_RGBA;
123 pixelType = GL_UNSIGNED_BYTE;
124 break;
125
126 case Orthanc::PixelFormat_Float32:
127 sourceFormat = GL_RED;
128 internalFormat = GL_R32F; // Don't use "GL_RED" here, as it clamps to [0,1]
129 pixelType = GL_FLOAT;
130 break;
131
132 default:
133 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
134 "No support for this format in OpenGL textures: " +
135 std::string(EnumerationToString(format)));
136 }
137 106
138 width_ = width; 107 width_ = width;
139 height_ = height; 108 height_ = height;
140 109
141 GLint interpolation = (isLinearInterpolation ? GL_LINEAR : GL_NEAREST); 110 GLint interpolation = (isLinearInterpolation ? GL_LINEAR : GL_NEAREST);
233 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER); 202 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
234 203
235 GLfloat colorfv[4] = { 0, 0, 0, 0 }; 204 GLfloat colorfv[4] = { 0, 0, 0, 0 };
236 glTextureParameterfv(texture_, GL_TEXTURE_BORDER_COLOR, colorfv); 205 glTextureParameterfv(texture_, GL_TEXTURE_BORDER_COLOR, colorfv);
237 } 206 }
207
208
209 void OpenGLTexture::ConvertToOpenGLFormats(GLenum& sourceFormat,
210 GLenum& internalFormat,
211 GLenum& pixelType,
212 Orthanc::PixelFormat format)
213 {
214 switch (format)
215 {
216 case Orthanc::PixelFormat_Grayscale8:
217 sourceFormat = GL_RED;
218 internalFormat = GL_RED;
219 pixelType = GL_UNSIGNED_BYTE;
220 break;
221
222 case Orthanc::PixelFormat_RGB24:
223 sourceFormat = GL_RGB;
224 internalFormat = GL_RGB;
225 pixelType = GL_UNSIGNED_BYTE;
226 break;
227
228 case Orthanc::PixelFormat_RGBA32:
229 sourceFormat = GL_RGBA;
230 internalFormat = GL_RGBA;
231 pixelType = GL_UNSIGNED_BYTE;
232 break;
233
234 case Orthanc::PixelFormat_Float32:
235 sourceFormat = GL_RED;
236 internalFormat = GL_R32F; // Don't use "GL_RED" here, as it clamps to [0,1]
237 pixelType = GL_FLOAT;
238 break;
239
240 default:
241 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented,
242 "No support for this format in OpenGL textures: " +
243 std::string(EnumerationToString(format)));
244 }
245 }
238 } 246 }
239 } 247 }