struct RwFrame
{
    RwObject            object;

    RwLLLink            inDirtyListLink;

    /* Put embedded matrices here to ensure they remain 16-byte aligned */
    RwMatrix            modelling;
    RwMatrix            ltm;

    RwLinkList          objectList; /* List of objects connected to a frame */

    struct RwFrame      *child;
    struct RwFrame      *next;
    struct RwFrame      *root;   /* Root of the tree */
};

struct RpMaterial
{
        RwTexture           *texture; /**< texture */
        RwRGBA              color; /**< color */              
        RxPipeline          *pipeline; /**< pipeline */     
        RwSurfaceProperties surfaceProps; /**< surfaceProps */
        RwInt16             refCount;          /* C.f. rwsdk/world/bageomet.h:RpGeometry */
        RwInt16             pad;
};

struct RpMaterialList
{
    RpMaterial     **materials;
    RwInt32        numMaterials;
    RwInt32        space;
};

struct RpMorphTarget
{
        RpGeometry *parentGeom; 
        RwSphere   boundingSphere;
        RwV3d      *verts;
        RwV3d      *normals;
};

struct RpGeometry
{
    RwObject            object;     /* Generic type */

    RwUInt32            flags;      /* Geometry flags */

    RwUInt16            lockedSinceLastInst; /* What has been locked since we last instanced - for re-instancing */
    RwInt16             refCount;   /* Reference count (for keeping track of atomics referencing geometry) */

    RwInt32             numTriangles; /* Quantity of various things (polys, verts and morph targets) */
    RwInt32             numVertices;
    RwInt32             numMorphTargets;
    RwInt32             numTexCoordSets;

    RpMaterialList      matList;

    RpTriangle         *triangles;  /* The triangles */

    RwRGBA             *preLitLum;  /* The pre-lighting values */

    RwTexCoords        *texCoords[rwMAXTEXTURECOORDS]; /* Texture coordinates */

    RwSurfaceProperties ignoredSurfaceProps; /* Not used in pp rendering, but present
                                              * so if pipe1 files are read and written these
                                              * values are not lost
                                              */

    RpMeshHeader       *mesh;   /* The mesh - groups polys of the same material */

    RwResEntry         *repEntry;       /* Information for an instance */

    RpMorphTarget      *morphTarget;    /* The Morph Target */
};

struct RpAtomic
{
    RwObjectHasFrame    object;

    /* Information for an instance */
    RwResEntry         *repEntry;

    /* Triangles making the object */
    RpGeometry         *geometry;

    /* Interpolated bounding sphere (in object space and world space) */
    RwSphere            boundingSphere;
    RwSphere            worldBoundingSphere;

    /* Connections to other atomics */
    RpClump            *clump;
    RwLLLink            inClumpLink;

    /* callbacks */
    RpAtomicCallBackRender renderCallBack;

    /* Interpolation animation pointer */
    RpInterpolator      interpolator;

    /* Counter for checks of "render has occurred already" */
    RwUInt16            renderFrame;
    RwUInt16            pad;

    /* Connections to sectors */
    RwLinkList          llWorldSectorsInAtomic;

    /* The Atomic object pipeline for this Atomic */
    RxPipeline         *pipeline;
};

struct RpClump
{
        RwObject            object;

        /* Information about all the Atomics */
        RwLinkList          atomicList;

        /* Lists of lights and cameras */
        RwLinkList          lightList;
        RwLinkList          cameraList;

        /* The clump in the world */
        RwLLLink            inWorldLink;

        /* Clump callback */
        RpClumpCallBack     callback;

        /* Render frame - used to prevent multiple invocations
         * of the clump frustum callback
         */
        RwUInt16            renderFrame;
        RwUInt16            pad;
};