TerrainBuffer.h

#pragma once
#include "util/ParaMemPool.h"

namespace ParaTerrain
{
    using namespace ParaEngine;
    class Terrain;

    struct TextureGroup
    {
    public:
        int nStartIndex;
        int nNumTriangles;
    };

    typedef FixedSizedAllocator<TextureGroup>   TextureGroup_Allocator;
    typedef std::vector <TextureGroup> TextureGroups_Type;

    class TerrainBuffer
    {
    public:
        Terrain* m_pTerrain;
        Matrix4 matModelview;

        ParaVertexBuffer m_pVertexBuffer;

        int m_nBufferSize;

        int m_nNumOfTriangles;

        TextureGroups_Type m_textureGroups;
    public:
        TerrainBuffer();
        ~TerrainBuffer();
    public:

        VertexBufferDevicePtr_type GetVertexBufferDevicePtr();

        void DeleteDeviceObjects();
        void RebuildBuffer();

        bool HasData();

        //GeoMipmapCode
        void BuildGeoMipmapBuffer();
        int GetChunkVertexOffset(int x, int y);
    };
}