CWE-ou-minkata/Sources/Plasma/PubUtilLib/plDrawable/plAuxSpan.h

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
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*==LICENSE==*/

#ifndef plAuxSpan_inc
#define plAuxSpan_inc


#include "hsTemplates.h"
#include "plSpanTypes.h"
#include "plPipeline/plGBufferGroup.h"

class plDrawableSpans;
class hsGMaterial;
class plGBufferGroup;
class plDecalVtxFormat;

class plAuxSpan
{
public:
    enum
    {
        kRTLit                  = 0x1,
        kOverrideLiteModel      = 0x2,
        kAttenColor             = 0x4,
        kWorldSpace             = 0x8,
        kVertexShader           = 0x10
    };

    void*                       fOwner;

    plDrawableSpans*            fDrawable;
    uint32_t                      fBaseSpanIdx;
    hsGMaterial*                fMaterial;
    uint32_t                      fFlags;

    hsTArray<hsPoint3>          fOrigPos;
    hsTArray<hsPoint3>          fOrigUVW;

    plGBufferGroup* fGroup;     // Which buffer group, i.e. which vertex format

    uint32_t          fVBufferIdx;    // Which vertex buffer in group
    uint32_t          fCellIdx;       // Cell index inside the vertex buffer
    uint32_t          fCellOffset;    // Offset inside the cell
    uint32_t          fVStartIdx;     // Start vertex # in the actual interlaced buffer
    uint32_t          fVLength;       // Length of this span in the buffer

    uint32_t          fVBufferInit;
    uint32_t          fVBufferLimit;

    uint32_t          fIBufferIdx;    // Which index buffer in group
    uint32_t          fIStartIdx;     // Redundant, since all spans are contiguous. Here for debugging
    uint32_t          fILength;       // Length of this span in the buffer

    uint32_t          fIBufferInit;
    uint32_t          fIBufferLimit;

    plDecalVtxFormat* GetBaseVtxPtr() const
    {
        plGBufferGroup* grp = fGroup;
        plGBufferCell* cell = grp->GetCell(fVBufferIdx, fCellIdx);

        uint8_t* ptr = grp->GetVertBufferData(fVBufferIdx);
        
        ptr += cell->fVtxStart + fCellOffset;

        return (plDecalVtxFormat*)ptr;
    }
    uint16_t* GetBaseIdxPtr() const
    {
        plGBufferGroup* grp = fGroup;

        return grp->GetIndexBufferData(fIBufferIdx) + fIBufferInit;
    }

};

#endif // plAuxSpan_inc