DropShadowRenderer.h

#pragma once
#include <stdint.h>
#include"ParaEngine.h"
#include "VertexFVF.h"

namespace ParaEngine
{
    class VertexPositionIndex
    {
    public:
        Vector3 Position;
        float InstanceIndex;
        float v;

        VertexPositionIndex();
    };

    class DropShadowRenderer
    {
    public:
        DropShadowRenderer();
        ~DropShadowRenderer();
        void Render();
        void CreateBuffer();
        void BeginFrame();
        void DropShadowRenderer::AddInstance(Vector3& worldPos,Vector3& renderPos,float size);

        uint32_t GetInstanceCount(){return m_instanceCount;}
        uint32_t GetMaxInstanceCount(){return g_maxInstanceCount;}

        void InitDeviceObjects();
        void InvalidateDeviceObjects();
        void DeleteDeviceObjects();
        void Cleanup();

    private:
        static const uint32_t g_maxInstancePerBatch = 70;
        static const uint32_t g_maxInstanceCount = 100;

        IDirect3DVertexBuffer9* m_pGeometryBuffer;
        IDirect3DIndexBuffer9* m_pIndexBuffer;
        
        uint16_t m_instanceVertexCount;
        uint16_t m_instanceIndexCount;
        
        uint16_t m_totalVertexCount;
        uint16_t m_totalIndexCount;

        uint16_t m_instanceCount;

        std::vector<float> m_constantBuffer;

        void CreateCylinder(float height,float radius,int tesselationFactor,Vector3* pVertices,uint16_t* pIndices);

        void DrawAllBatch(IDirect3DDevice9* pDevice);
    };
}