vtkWebGPUComputeRenderTexture.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkWebGPUComputeRenderTexture_h
#define vtkWebGPUComputeRenderTexture_h
 
#include "vtkRenderingWebGPUModule.h" // For export macro
#include "vtkWeakPointer.h"           // for weak pointer on the associated compute pass
#include "vtkWebGPUComputePass.h"     // For compute pass
#include "vtkWebGPUComputeTexture.h"
#include "vtkWebGPUComputeTextureView.h" // For the texture view aspect attribute
 
VTK_ABI_NAMESPACE_BEGIN

class VTKRENDERINGWEBGPU_EXPORT vtkWebGPUComputeRenderTexture : public vtkWebGPUComputeTexture
{
public:
  vtkTypeMacro(vtkWebGPUComputeRenderTexture, vtkWebGPUComputeTexture);
  static vtkWebGPUComputeRenderTexture* New();
 
  void PrintSelf(ostream& os, vtkIndent indent) override;

  enum RenderTextureType
  {
    UNDEFINED = 0,
    DEPTH_BUFFER,
    COLOR_BUFFER
  };


  vtkGetEnumMacro(Type, RenderTextureType);
  vtkSetEnumMacro(Type, RenderTextureType);


  vtkGetEnumMacro(Aspect, vtkWebGPUComputeTextureView::TextureViewAspect);
  vtkSetEnumMacro(Aspect, vtkWebGPUComputeTextureView::TextureViewAspect);


  void SetWebGPUTexture(WGPUTexture texture) { this->WebGPUTexture = texture; };
  WGPUTexture GetWebGPUTexture() { return this->WebGPUTexture; };


  vtkWeakPointer<vtkWebGPUComputePass> GetAssociatedComputePass();
  void SetAssociatedComputePass(vtkWeakPointer<vtkWebGPUComputePass> computePass);
 
protected:
  vtkWebGPUComputeRenderTexture();
  ~vtkWebGPUComputeRenderTexture() override;
 
private:
  vtkWebGPUComputeRenderTexture(const vtkWebGPUComputeRenderTexture&) = delete;
  void operator=(const vtkWebGPUComputeRenderTexture&) = delete;
 
  // Aspect for the future texture view of this texture in a compute pass
  vtkWebGPUComputeTextureView::TextureViewAspect Aspect =
    vtkWebGPUComputeTextureView::TextureViewAspect::ASPECT_ALL;
 
  // We may want vtkWebGPUComputePipeline::AddTexture() not to create a new device texture for this
  // vtkWebGPUComputeBuffer but rather use an existing one that has been created elsewhere (by a
  // webGPUPolyDataMapper for example). This is the attribute that points to this 'already existing'
  // buffer.
  WGPUTexture WebGPUTexture = nullptr;

  vtkWeakPointer<vtkWebGPUComputePass> AssociatedComputePass = nullptr;

  RenderTextureType Type = UNDEFINED;
};
 
VTK_ABI_NAMESPACE_END
 
#endif