vtkOpenGLRayCastImageDisplayHelper.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkOpenGLRayCastImageDisplayHelper_h
#define vtkOpenGLRayCastImageDisplayHelper_h
 
#include "vtkRayCastImageDisplayHelper.h"
#include "vtkRenderingVolumeOpenGL2Module.h" // For export macro
 
VTK_ABI_NAMESPACE_BEGIN
class vtkFixedPointRayCastImage;
class vtkOpenGLHelper;
class vtkRenderer;
class vtkTextureObject;
class vtkVolume;
class vtkWindow;
 
class VTKRENDERINGVOLUMEOPENGL2_EXPORT vtkOpenGLRayCastImageDisplayHelper
  : public vtkRayCastImageDisplayHelper
{
public:
  static vtkOpenGLRayCastImageDisplayHelper* New();
  vtkTypeMacro(vtkOpenGLRayCastImageDisplayHelper, vtkRayCastImageDisplayHelper);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  void RenderTexture(vtkVolume* vol, vtkRenderer* ren, int imageMemorySize[2],
    int imageViewportSize[2], int imageInUseSize[2], int imageOrigin[2], float requestedDepth,
    unsigned char* image) override;
 
  void RenderTexture(vtkVolume* vol, vtkRenderer* ren, int imageMemorySize[2],
    int imageViewportSize[2], int imageInUseSize[2], int imageOrigin[2], float requestedDepth,
    unsigned short* image) override;
 
  void RenderTexture(vtkVolume* vol, vtkRenderer* ren, vtkFixedPointRayCastImage* image,
    float requestedDepth) override;
 
  void ReleaseGraphicsResources(vtkWindow* win) override;
 
protected:
  vtkOpenGLRayCastImageDisplayHelper();
  ~vtkOpenGLRayCastImageDisplayHelper() override;
 
  void RenderTextureInternal(vtkVolume* vol, vtkRenderer* ren, int imageMemorySize[2],
    int imageViewportSize[2], int imageInUseSize[2], int imageOrigin[2], float requestedDepth,
    int imageScalarType, void* image);
 
  // used for copying to framebuffer
  vtkTextureObject* TextureObject;
  vtkOpenGLHelper* ShaderProgram;
 
private:
  vtkOpenGLRayCastImageDisplayHelper(const vtkOpenGLRayCastImageDisplayHelper&) = delete;
  void operator=(const vtkOpenGLRayCastImageDisplayHelper&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif