dolphin/Source/Core/VideoCommon/Src/NativeVertexFormat.h

// Copyright (C) 2003-2008 Dolphin Project.

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License 2.0 for more details.

// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/

// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/

#ifndef _NATIVEVERTEXFORMAT_H
#define _NATIVEVERTEXFORMAT_H

#include "CPMemory.h"

// m_components
enum {
	VB_HAS_POSMTXIDX =(1<<1),
	VB_HAS_TEXMTXIDX0=(1<<2),
	VB_HAS_TEXMTXIDX1=(1<<3),
	VB_HAS_TEXMTXIDX2=(1<<4),
	VB_HAS_TEXMTXIDX3=(1<<5),
	VB_HAS_TEXMTXIDX4=(1<<6),
	VB_HAS_TEXMTXIDX5=(1<<7),
	VB_HAS_TEXMTXIDX6=(1<<8),
	VB_HAS_TEXMTXIDX7=(1<<9),
	VB_HAS_TEXMTXIDXALL=(0xff<<2),

	//VB_HAS_POS=0, // Implied, it always has pos! don't bother testing
	VB_HAS_NRM0=(1<<10),
	VB_HAS_NRM1=(1<<11),
	VB_HAS_NRM2=(1<<12),
	VB_HAS_NRMALL=(7<<10),

	VB_HAS_COL0=(1<<13),
	VB_HAS_COL1=(1<<14),

	VB_HAS_UV0=(1<<15),
	VB_HAS_UV1=(1<<16),
	VB_HAS_UV2=(1<<17),
	VB_HAS_UV3=(1<<18),
	VB_HAS_UV4=(1<<19),
	VB_HAS_UV5=(1<<20),
	VB_HAS_UV6=(1<<21),
	VB_HAS_UV7=(1<<22),
	VB_HAS_UVALL=(0xff<<15),
	VB_HAS_UVTEXMTXSHIFT=13,
};


#define LOADERDECL __cdecl
typedef void (LOADERDECL *TPipelineFunction)(const void *);

// This will soon be used in a cache of vertex formats, rather than used in-place.
// The implementation of this class is specific for GL/DX, so NativeVertexFormat.cpp
// is in the respective plugin, not here in VideoCommon.

// This class will also be split into NativeVertexFormat and VertexFormatConverter.
// VertexFormatConverters will be cached, indexed by TVtxDesc+TVtxAttr.

// Note that this class can't just invent arbitrary vertex formats out of its input - 
// all the data loading code must always be made compatible.
class NativeVertexFormat
{
public:
	NativeVertexFormat();
	~NativeVertexFormat();

	void Initialize(const TVtxDesc &vtx_desc, const TVtxAttr &vtx_attr);
	void RunPipelineOnce(const TVtxAttr &vtx_attr) const;

	void SetupVertexPointers() {
		// Cast a pointer to compiled code to a pointer to a function taking no parameters, through a (void *) cast first to
		// get around type checking errors, and call it.
		((void (*)())(void*)m_compiledCode)();
	}

	// TODO: move these in under private:
	int m_VBVertexStride;  // PC-side vertex stride
	int m_VBStridePad;
	u32 m_components;  // VB_HAS_X. Bitmask telling what vertex components are present.
	TPipelineFunction m_PipelineStages[32];
	int m_numPipelineStages;
	u8* m_compiledCode;
};

#endif  // _NATIVEVERTEXFORMAT_H