RuntimeMeshSectionProxy.h

Go to the documentation of this file.

// Copyright 2016-2018 Chris Conway (Koderz). All Rights Reserved.

#pragma once

#include "Engine/Engine.h"
#include "Components/MeshComponent.h"
#include "RuntimeMeshRendering.h"
#include "RuntimeMeshUpdateCommands.h"


struct FRuntimeMeshSectionNullBufferElement
{
        FPackedNormal Normal;
        FPackedNormal Tangent;
        FColor Color;
        FVector2DHalf UV0;

        FRuntimeMeshSectionNullBufferElement()
                : Normal(FVector(0.0f, 0.0f, 1.0f))
                , Tangent(FVector(1.0f, 0.0f, 0.0f))
                , Color(FColor::Transparent)
                , UV0(FVector2D::ZeroVector)
        { }
};


class FRuntimeMeshSectionProxy : public TSharedFromThis<FRuntimeMeshSectionProxy, ESPMode::NotThreadSafe>
{
        EUpdateFrequency UpdateFrequency;

        FRuntimeMeshVertexFactory VertexFactory;

        FRuntimeMeshPositionVertexBuffer PositionBuffer;

        FRuntimeMeshTangentsVertexBuffer TangentsBuffer;

        FRuntimeMeshUVsVertexBuffer UVsBuffer;

        FRuntimeMeshColorVertexBuffer ColorBuffer;

        FRuntimeMeshIndexBuffer IndexBuffer;

        FRuntimeMeshIndexBuffer AdjacencyIndexBuffer;

        bool bIsVisible;

        bool bCastsShadow;

public:
        FRuntimeMeshSectionProxy(ERHIFeatureLevel::Type InFeatureLevel, FRuntimeMeshSectionCreationParamsPtr CreationData);

        ~FRuntimeMeshSectionProxy();

        bool ShouldRender();
        bool CanRender();

        bool WantsToRenderInStaticPath() const;

        bool CastsShadow() const;

        FRuntimeMeshVertexFactory* GetVertexFactory() { return &VertexFactory; }

        void CreateMeshBatch(FMeshBatch& MeshBatch, bool bWantsAdjacencyInfo);

        void BuildVertexDataType(FLocalVertexFactory::FDataType& DataType);

        void FinishUpdate_RenderThread(FRuntimeMeshSectionUpdateParamsPtr UpdateData);

        void FinishPropertyUpdate_RenderThread(FRuntimeMeshSectionPropertyUpdateParamsPtr UpdateData);
};