vtkOpenXRManagerGraphics.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkOpenXRManagerGraphics_h
#define vtkOpenXRManagerGraphics_h

#include "vtkObject.h"
#include "vtkRenderingOpenXRModule.h" // For export macro

#include "vtkOpenXR.h" // For OpenXR types
#include <vector>      // For std::vector

namespace vtk::detail
{
VTK_ABI_NAMESPACE_BEGIN
class vtkOpenXRManager;
VTK_ABI_NAMESPACE_END
}

VTK_ABI_NAMESPACE_BEGIN
class vtkOpenGLRenderWindow;

class VTKRENDERINGOPENXR_EXPORT vtkOpenXRManagerGraphics : public vtkObject
{
public:
  vtkTypeMacro(vtkOpenXRManagerGraphics, vtkObject);

  virtual void SetNumberOfSwapchains(uint32_t viewCount) = 0;


  virtual void GetColorSwapchainImage(uint32_t eyeIndex, uint32_t imgIndex, void* texture) = 0;
  virtual void GetDepthSwapchainImage(uint32_t eyeIndex, uint32_t imgIndex, void* texture) = 0;


  virtual void EnumerateColorSwapchainImages(XrSwapchain swapchain, uint32_t eyeIndex) = 0;
  virtual void EnumerateDepthSwapchainImages(XrSwapchain swapchain, uint32_t eyeIndex) = 0;

  uint32_t GetChainLength(XrSwapchain swapchain);


  virtual const std::vector<int64_t>& GetSupportedColorFormats() = 0;
  virtual const std::vector<int64_t>& GetSupportedDepthFormats() = 0;

  virtual bool CreateGraphicsBinding(vtkOpenGLRenderWindow* helperWindow) = 0;

  virtual const void* GetGraphicsBinding() = 0;

  virtual const char* GetBackendExtensionName() = 0;

protected:
  vtkOpenXRManagerGraphics() = default;
  ~vtkOpenXRManagerGraphics() override = default;

  virtual bool CheckGraphicsRequirements(vtk::detail::vtkOpenXRManager& manager) = 0;
  friend class vtk::detail::vtkOpenXRManager; // for vtkOpenXRManager::Initialize

private:
  vtkOpenXRManagerGraphics(const vtkOpenXRManagerGraphics&) = delete;
  void operator=(const vtkOpenXRManagerGraphics&) = delete;
};

VTK_ABI_NAMESPACE_END
#endif