--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancStone/Sources/OpenGL/OpenGLTextureVolume.h	Thu May 04 17:18:14 2023 +0200
@@ -0,0 +1,118 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2022 Osimis S.A., Belgium
+ * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program. If not, see
+ * <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include "OpenGLIncludes.h"
+#include "IOpenGLContext.h"
+
+#include <Images/ImageAccessor.h>
+
+
+namespace OrthancStone
+{
+  namespace OpenGL
+  {
+    class OpenGLTextureVolume : public boost::noncopyable
+    {
+      friend class OpenGLFramebuffer;
+
+    private:
+      OpenGL::IOpenGLContext& context_;
+      GLuint                  texture_;
+      unsigned int            width_;
+      unsigned int            height_;
+      unsigned int            depth_;
+      Orthanc::PixelFormat    format_;
+      bool                    isLinearInterpolation_;
+
+      /**
+       * Returns the low-level OpenGL handle of the texture
+       * array. Beware to never change the size of the texture using
+       * this handle!
+       **/
+      GLuint GetId() const
+      {
+        return texture_;
+      }
+
+    public:
+      OpenGLTextureVolume(IOpenGLContext& context);
+
+      ~OpenGLTextureVolume();
+
+      unsigned int GetWidth() const
+      {
+        return width_;
+      }
+
+      unsigned int GetHeight() const
+      {
+        return height_;
+      }
+
+      unsigned int GetDepth() const
+      {
+        return depth_;
+      }
+
+      Orthanc::PixelFormat GetFormat() const
+      {
+        return format_;
+      }
+
+      bool IsLinearInterpolation() const
+      {
+        return isLinearInterpolation_;
+      }
+
+      void Setup(Orthanc::PixelFormat format,
+                 unsigned int width,
+                 unsigned int height,
+                 unsigned int depth,
+                 bool isLinearInterpolation);
+
+      /**
+       * By default, textures are mirrored at the borders. This
+       * function will set out-of-image access to zero.
+       **/
+      void SetClampingToZero();
+
+      void Bind(GLint location) const;
+
+      void BindAsTextureUnit(GLint location,
+                             unsigned int unit) const;
+
+      void Upload(const Orthanc::ImageAccessor& image,
+                  unsigned int z);
+
+      size_t GetMemoryBufferSize() const;
+
+      // "targetSize" must be equal to "GetMemoryBufferSize()"
+      void Download(void* targetBuffer,
+                    size_t targetSize) const;
+
+      void Download(std::string& target) const;
+    };
+  }
+}