vtkWebGPUTexture.h

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

#include "vtkTexture.h"

#include "vtkRenderingWebGPUModule.h"             // For export macro
#include "vtkWeakPointer.h"                       // for weak pointer
#include "vtkWebGPURenderTextureDeviceResource.h" // for vtkWebGPURenderTextureDeviceResource
#include "vtkWrappingHints.h"                     // For VTK_MARSHALAUTO
#include "vtk_wgpu.h"                             // for webgpu

#include <array> // for std::array
#include <tuple> // for std::tuple

VTK_ABI_NAMESPACE_BEGIN
class vtkOverrideAttribute;
class vtkRenderWindow;
class vtkWebGPURenderTextureDeviceResource;
class VTKRENDERINGWEBGPU_EXPORT VTK_MARSHALAUTO vtkWebGPUTexture : public vtkTexture
{
public:
  static vtkWebGPUTexture* New();
  VTK_NEWINSTANCE
  static vtkOverrideAttribute* CreateOverrideAttributes();
  vtkTypeMacro(vtkWebGPUTexture, vtkTexture);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void Render(vtkRenderer* ren) override;

  void Load(vtkRenderer*) override;

  void PostRender(vtkRenderer*) override;

  void ReleaseGraphicsResources(vtkWindow*) override;

  int GetTextureUnit() override;

  int IsTranslucent() override;

  vtkSmartPointer<vtkWebGPURenderTextureDeviceResource> GetDeviceResource() const;

protected:
  vtkWebGPUTexture();
  ~vtkWebGPUTexture() override;

private:
  vtkWebGPUTexture(const vtkWebGPUTexture&) = delete;
  void operator=(const vtkWebGPUTexture&) = delete;

  vtkTimeStamp LoadTime;
  vtkWeakPointer<vtkRenderWindow> RenderWindow;
  int TextureIndex;

  bool IsValidTextureIndex();
  bool CanDataPlaneBeUsedDirectlyAsColors(vtkDataArray* inputScalars);
  std::tuple<vtkWebGPURenderTextureDeviceResource::TextureDimension, std::array<unsigned int, 3>>
  GetTextureDimensionAndSize(vtkImageData* imageData);
  vtkWebGPURenderTextureDeviceResource::TextureFormat GetTextureFormatFromImageData(
    int numComponents, int dataType);
};
#define vtkWebGPUTexture_OVERRIDE_ATTRIBUTES vtkWebGPUTexture::CreateOverrideAttributes()
VTK_ABI_NAMESPACE_END
#endif