foray_drawmanager.hpp

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#pragma once
#include "../../util/foray_dualbuffer.hpp"
#include "../foray_component.hpp"
 
namespace foray::scene::gcomp {
 
    struct DrawOp
    {
      public:
        uint64_t                          Order           = 0;
        Mesh*                             Target          = nullptr;
        std::vector<ncomp::MeshInstance*> Instances       = {};
        uint32_t                          TransformOffset = 0;
    };
 
    class DrawDirector : public GlobalComponent, public Component::UpdateCallback, public Component::DrawCallback
    {
      public:
        inline DrawDirector() {}
 
        void InitOrUpdate();
 
        virtual int32_t GetOrder() const override { return ORDER_TRANSFORM; }
 
        virtual void Update(SceneUpdateInfo&) override;
        virtual void Draw(SceneDrawInfo&) override;
 
        FORAY_GETTER_CR(CurrentTransformBuffer)
        FORAY_GETTER_CR(PreviousTransformBuffer)
 
        inline VkDescriptorBufferInfo GetCurrentTransformsDescriptorInfo() const { return mCurrentTransformBuffer.GetDeviceBuffer().GetVkDescriptorBufferInfo(); }
        inline VkDescriptorBufferInfo GetPreviousTransformsDescriptorInfo() const { return mPreviousTransformBuffer.GetVkDescriptorBufferInfo(); }
        inline VkBuffer               GetCurrentTransformsVkBuffer() const { return mCurrentTransformBuffer.GetDeviceBuffer().GetBuffer(); }
        inline VkBuffer               GetPreviousTransformsVkBuffer() const { return mPreviousTransformBuffer.GetBuffer(); }
 
        FORAY_GETTER_V(TotalCount)
 
      protected:
        util::DualBuffer    mCurrentTransformBuffer;
        core::ManagedBuffer mPreviousTransformBuffer;
 
        void CreateBuffers(size_t transformCount);
        void DestroyBuffers();
 
        std::vector<DrawOp> mDrawOps    = {};
        bool                mFirstSetup = true;
        GeometryStore*      mGeo        = nullptr;
        uint32_t            mTotalCount = 0;
    };
}  // namespace foray::scene::gcomp