/usr/include/paraview/vtkOpenGLTexture.h is in paraview-dev 5.0.1+dfsg1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88  | /*=========================================================================
  Program:   Visualization Toolkit
  Module:    vtkOpenGLTexture.h
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkOpenGLTexture - OpenGL texture map
// .SECTION Description
// vtkOpenGLTexture is a concrete implementation of the abstract class
// vtkTexture. vtkOpenGLTexture interfaces to the OpenGL rendering library.
#ifndef vtkOpenGLTexture_h
#define vtkOpenGLTexture_h
#include "vtkRenderingOpenGLModule.h" // For export macro
#include "vtkTexture.h"
//BTX
#include "vtkWeakPointer.h" // needed for vtkWeakPointer.
//ETX
class vtkWindow;
class vtkOpenGLRenderer;
class vtkRenderWindow;
class vtkPixelBufferObject;
class VTKRENDERINGOPENGL_EXPORT vtkOpenGLTexture : public vtkTexture
{
public:
  static vtkOpenGLTexture *New();
  vtkTypeMacro(vtkOpenGLTexture, vtkTexture);
  virtual void PrintSelf(ostream& os, vtkIndent indent);
  // Description:
  // Implement base class method.
  void Load(vtkRenderer*);
  // Descsription:
  // Clean up after the rendering is complete.
  virtual void PostRender(vtkRenderer*);
  // Description:
  // Release any graphics resources that are being consumed by this texture.
  // The parameter window could be used to determine which graphic
  // resources to release. Using the same texture object in multiple
  // render windows is NOT currently supported.
  void ReleaseGraphicsResources(vtkWindow*);
  // Description:
  // Get the openGL texture name to which this texture is bound.
  // This is available only if GL version >= 1.1
  vtkGetMacro(Index, long);
protected:
//BTX
  vtkOpenGLTexture();
  ~vtkOpenGLTexture();
  unsigned char *ResampleToPowerOfTwo(int &xsize, int &ysize,
                                      unsigned char *dptr, int bpp);
  vtkTimeStamp   LoadTime;
  unsigned int Index; // actually GLuint
  vtkWeakPointer<vtkRenderWindow> RenderWindow;   // RenderWindow used for previous render
  bool CheckedHardwareSupport;
  bool SupportsNonPowerOfTwoTextures;
  bool SupportsPBO;
  vtkPixelBufferObject *PBO;
private:
  vtkOpenGLTexture(const vtkOpenGLTexture&);  // Not implemented.
  void operator=(const vtkOpenGLTexture&);  // Not implemented.
  // Description:
  // Handle loading in extension support
  virtual void Initialize(vtkRenderer * ren);
//ETX
};
#endif
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