#include "dxstdafx.h"
#include ".\flexvertex.h"

FlexFormat* FlexVertex::format = NULL;

void FlexVertex::setFormat(FlexFormat* format)
{
	FlexVertex::format = format;
}

FlexFormat::FlexFormat()
:
posByteOffset(0),
normalByteOffset(12),
diffuseByteOffset(24),
specularByteOffset(28),
nTex(2)
{
	unsigned int ii[16] = {24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120, 128, 136, 144};
	for(int iu=0; iu<16; iu++)
		texByteOffset[iu] = ii[iu];
}

void FlexVertexArray::setFormat(D3DVERTEXELEMENT9* decl)
{
	int i=0;
	format.nTex = 0;
	while(decl[i].Type != D3DDECLTYPE_UNUSED)
	{
		if(decl[i].Usage == D3DDECLUSAGE_POSITION)
			format.posByteOffset = decl[i].Offset;
		if(decl[i].Usage == D3DDECLUSAGE_NORMAL)
			format.normalByteOffset = decl[i].Offset;
		if(decl[i].Usage == D3DDECLUSAGE_COLOR)
		{
			if(decl[i].UsageIndex == 0)
				format.diffuseByteOffset = decl[i].Offset;
			if(decl[i].UsageIndex == 1)
				format.specularByteOffset = decl[i].Offset;
		}
		if(decl[i].Usage == D3DDECLUSAGE_TEXCOORD)
		{
			format.texByteOffset[decl[i].UsageIndex] = decl[i].Offset;
			if(decl[i].UsageIndex >= format.nTex)
				format.nTex = decl[i].UsageIndex+1;
		}
		i++;
	}
	FlexVertex::setFormat(&format);
}