PickingRenderPass.h

#pragma once
 
#include <EditorEngineProcessFramework/EngineProcess/ViewRenderSettings.h>
#include <RendererCore/Pipeline/RenderPipelinePass.h>
#include <RendererFoundation/Resources/RenderTargetSetup.h>
 
class PL_EDITORENGINEPROCESSFRAMEWORK_DLL plPickingRenderPass : public plRenderPipelinePass
{
  PL_ADD_DYNAMIC_REFLECTION(plPickingRenderPass, plRenderPipelinePass);
 
public:
  plPickingRenderPass();
  ~plPickingRenderPass();
 
  plGALTextureHandle GetPickingIdRT() const;
  plGALTextureHandle GetPickingDepthRT() const;
 
  virtual bool GetRenderTargetDescriptions(const plView& view, const plArrayPtr<plGALTextureCreationDescription* const> inputs,
    plArrayPtr<plGALTextureCreationDescription> outputs) override;
  virtual void InitRenderPipelinePass(
    const plArrayPtr<plRenderPipelinePassConnection* const> inputs, const plArrayPtr<plRenderPipelinePassConnection* const> outputs) override;
  virtual void Execute(const plRenderViewContext& renderViewContext, const plArrayPtr<plRenderPipelinePassConnection* const> inputs,
    const plArrayPtr<plRenderPipelinePassConnection* const> outputs) override;
 
  virtual void ReadBackProperties(plView* pView) override;
 
  bool m_bPickSelected = true;
  bool m_bPickTransparent = true;
 
  plVec2 m_PickingPosition = plVec2(-1);
  plUInt32 m_PickingIdOut = 0;
  float m_PickingDepthOut = 0.0f;
  plVec2 m_MarqueePickPosition0 = plVec2(-1);
  plVec2 m_MarqueePickPosition1 = plVec2(-1);
  plUInt32 m_uiMarqueeActionID = 0xFFFFFFFF; // used to prevent reusing an old result for a new marquee action
  plUInt32 m_uiWindowWidth = 0;
  plUInt32 m_uiWindowHeight = 0;
 
private:
  void CreateTarget();
  void DestroyTarget();
 
  void ReadBackPropertiesSinglePick(plView* pView);
  void ReadBackPropertiesMarqueePick(plView* pView);
 
private:
  plRectFloat m_TargetRect;
 
  plGALTextureHandle m_hPickingIdRT;
  plGALTextureHandle m_hPickingDepthRT;
  plGALRenderTargetSetup m_RenderTargetSetup;
 
  plHashSet<plGameObjectHandle> m_SelectionSet;
 
 
  plMat4 m_mPickingInverseViewProjectionMatrix = plMat4::MakeZero();
 
  plDynamicArray<float> m_PickingResultsDepth;
 
  plDynamicArray<plUInt32> m_PickingResultsID;
};