TEXB_stream_format.txt

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TEXB File format

TEXB file format describe a texture.

Texture can embbed multiple "images" which are not only rectangular but
is defined as a triangle soup.

2011/12/06 V0.1 : First Draft
2011/12/09 V0.15: Added information about "Type" field, compressed texture is not complete still.
2012/01/12 V0.2 : Updated information about C String format for ressource name
2012/01/26 V0.3 : Added member width, height into image asset
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[TEXB](u32)
Size  (u32)
	String Length	(u16)
		Length include 0 and padding alignment
	C String (0 included, + padding align 2)
		T + full resource path name
		example : Tpackage.package2.filename.texb

	Width				(u16)
	Height				(u16)
	Type				(u16)
		Bit 0..2	: [0] ALPHA | [1] LUMA | [2] LUMALPHA | [3] RGB | [4] RGBA
		Bit 3		: [0] False, [1] True --> Compressed
		Bit 4		: [0] False, [1] True --> Mipmap
		Bit 5		: [0] False, [1] True --> Double Buffered
		Bit 6..7	: Pixel Format
			0 : 565  RGB
			1 : 5551 RGBA
			2 : 4444 RGBA
			3 : Byte
			
		TODO RP		: Add Bit definition for compressed texture format type (ETC1 variation, etc...)
						Can reuse pixel format bits if necessary

	TotalVertexCount	(u16)
	TotalIndexCount		(u16)
	ImageCount			(u16)
	
		(multiply by Image Count)
		[TIMG]				(u32)
		Size				(u16)
		String Length			(u16)
			Length include 0 and padding alignment
		C String 			(0 included, + padding align 2)
			I + full resource path name
			Ipackage.package2.filenameB.imag
		VertexCount			(u8)
		IndexCount			(u8)
		Width				(u16)
		Height				(u16)
		CenterX				(u16)
		CenterY				(u16)
		
			(multiply by VertexCount)
			X					(u32 fixed 16.16)
			Y					(u32 fixed 16.16)
			U					(u32 fixed 16.16)
			V					(u32 fixed 16.16)
			
			(multiply by IndexCount)
			Index				(u8)

	[... Texture Bitmap Data...]
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