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

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.

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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						fBaseSpanIdx;
	hsGMaterial*				fMaterial;
	UInt32						fFlags;

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

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

	UInt32			fVBufferIdx;	// Which vertex buffer in group
	UInt32			fCellIdx;		// Cell index inside the vertex buffer
	UInt32			fCellOffset;	// Offset inside the cell
	UInt32			fVStartIdx;		// Start vertex # in the actual interlaced buffer
	UInt32			fVLength;		// Length of this span in the buffer

	UInt32			fVBufferInit;
	UInt32			fVBufferLimit;

	UInt32			fIBufferIdx;	// Which index buffer in group
	UInt32			fIStartIdx;		// Redundant, since all spans are contiguous. Here for debugging
	UInt32			fILength;		// Length of this span in the buffer

	UInt32			fIBufferInit;
	UInt32			fIBufferLimit;

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

		UInt8* ptr = grp->GetVertBufferData(fVBufferIdx);
		
		ptr += cell->fVtxStart + fCellOffset;

		return (plDecalVtxFormat*)ptr;
	}
	UInt16* GetBaseIdxPtr() const
	{
		plGBufferGroup* grp = fGroup;

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

};

#endif // plAuxSpan_inc