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/*=========================================================================
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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