//--------------------------------------
//--- 010 Editor v2.1.3 Binary Template
//
// File: DDS file 
// Author: Glen Rickey
// Revision: 0.01	
// Purpose: Parse DDS file headers only... possible eventual pixeldata conversion
//	Comments mostly from Microsoft MSDN reference docs
//--------------------------------------

struct ddsFile {
	struct DDSSURFACEDESC2
	{
		char	MagicFourCC[4];	// "DDS "
		DWORD	dwSize; //size of header: always 124
		
		/*
			DDSD_CAPS =0x00000001 
			DDSD_HEIGHT = 0x00000002 
			DDSD_WIDTH = 0x00000004 
			DDSD_PITCH = 0x00000008 
			DDSD_PIXELFORMAT = 0x00001000 
			DDSD_MIPMAPCOUNT = 0x00020000 
			DDSD_LINEARSIZE = 0x00080000 
			DDSD_DEPTH = 0x00800000
		*/
		// 100010100001000000001111
		struct DDSD
			{
			DWORD	DDSD_CAPS :1;
			DWORD	DDSD_HEIGHT :1;
			DWORD	DDSD_WIDTH :1;
			DWORD	DDSD_PITCH :1;
			DWORD	:8;
			DWORD	DDSD_PIXELFORMAT:1;
			DWORD	:4;
			DWORD	DDSD_MIPMAPCOUNT:1;
			DWORD	:1;
			DWORD	DDSD_LINEARSIZE:1;
			DWORD	:3;
			DWORD	DDSD_DEPTH:1;
			} dwFlags;
		//DSDDCAPS	dwFlags; //flags... use enum, some must always be set.

		DWORD	dwHeight;  //height in pixels
		DWORD	dwWidth; //width in pixels
		DWORD 	dwPitchOrLinearSize;  //For uncompressed formats, this is the number of bytes per scan line (DWORD> aligned) for the main image. dwFlags should include DDSD_PITCH in this case. For compressed formats, this is the total number of bytes for the main image. dwFlags should be include DDSD_LINEARSIZE in this case.
		DWORD 	dwDepth; //For volume textures, this is the depth of the volume. dwFlags should include DDSD_DEPTH in this case.
		DWORD 	dwMipMapCount; //For items with mipmap levels, this is the total number of levels in the mipmap chain of the main image. dwFlags should include DDSD_MIPMAPCOUNT in this case. 
		DWORD 	dwReserved1[11]; // 11 Int32s
		struct DDPIXELFORMAT 
		{
			DWORD 	dwSize; //Size of structure. This member must be set to 32. 
			/*
			DDPF_ALPHAPIXELS 0x00000001 
			DDPF_FOURCC 0x00000004 
			DDPF_RGB 0x00000040 
			*/
			// 1000101
			struct DDPF
			{
				DWORD	DDPF_ALPHAPIXELS :1; 
				DWORD	:1;
				DWORD	DDPF_FOURCC :1;
				DWORD	:3;
				DWORD	DDPF_RGB :1; 
		
			} dwFlags;
			//DWORD 	dwFlags; //Flags to indicate valid fields. Uncompressed formats will usually use DDPF_RGB to indicate an RGB format, while compressed formats will use DDPF_FOURCC with a four-character code. 
			char 	dwFourCC[4]; //This is the four-character code for compressed formats. dwFlags should include DDPF_FOURCC in this case. For DXTn compression, this is set to "DXT1", "DXT2", "DXT3", "DXT4", or "DXT5". 
			DWORD 	dwRGBBitCount; //For RGB formats, this is the total number of bits in the format. dwFlags should include DDPF_RGB in this case. This value is usually 16, 24, or 32. For A8R8G8B8, this value would be 32. 
			DWORD 	dwRBitMask;
			DWORD 	dwGBitMask;
			DWORD 	dwBBitMask; //For RGB formats, these three fields contain the masks for the red, green, and blue channels. For A8R8G8B8, these values would be 0x00ff0000, 0x0000ff00, and 0x000000ff respectively. 
			DWORD 	dwRGBAlphaBitMask; //For RGB formats, this contains the mask for the alpha channel, if any. dwFlags should include DDPF_ALPHAPIXELS in this case. For A8R8G8B8, this value would be 0xff000000. 
		} ddPixelFormat;
		struct DDCAPS2 
		{
			/*
			DDSCAPS_COMPLEX 0x00000008 
			DDSCAPS_TEXTURE 0x00001000 
			DDSCAPS_MIPMAP 0x00400000 
			*/
			// 10000000001000000001000
			//DWORD 	dwCaps1; //DDS files should always include DDSCAPS_TEXTURE. If the file contains mipmaps, DDSCAPS_MIPMAP should be set. For any DDS file with more than one main surface, such as a mipmaps, cubic environment map, or volume texture, DDSCAPS_COMPLEX should also be set. 
			struct DDSCAPS 
			{
				DWORD	:3;
				DWORD	DDSCAPS_COMPLEX	:1;
				DWORD	:8;
				DWORD	DDSCAPS_TEXTURE :1;
				DWORD	:9;
				DWORD	DDSCAPS_MIPMAP :1;
			} dwCaps1;
			
			/*
			DDSCAPS2_CUBEMAP 0x00000200 
			DDSCAPS2_CUBEMAP_POSITIVEX 0x00000400 
			DDSCAPS2_CUBEMAP_NEGATIVEX 0x00000800 
			DDSCAPS2_CUBEMAP_POSITIVEY 0x00001000 
			DDSCAPS2_CUBEMAP_NEGATIVEY 0x00002000 
			DDSCAPS2_CUBEMAP_POSITIVEZ 0x00004000 
			DDSCAPS2_CUBEMAP_NEGATIVEZ 0x00008000 
			DDSCAPS2_VOLUME 0x00200000 
			*/
			// 1000001111111000000000
			//DWORD 	dwCaps2; //For cubic environment maps, DDSCAPS2_CUBEMAP should be included as well as one or more faces of the map (DDSCAPS2_CUBEMAP_POSITIVEX, DDSCAPS2_CUBEMAP_NEGATIVEX, DDSCAPS2_CUBEMAP_POSITIVEY, DDSCAPS2_CUBEMAP_NEGATIVEY, DDSCAPS2_CUBEMAP_POSITIVEZ, DDSCAPS2_CUBEMAP_NEGATIVEZ). For volume textures, DDSCAPS2_VOLUME should be included. 
			struct DDSCAPS2
			{	
				DWORD	:9;
				DWORD	DDSCAPS2_CUBEMAP :1;
				DWORD	DDSCAPS2_CUBEMAP_POSITIVEX :1;
				DWORD	DDSCAPS2_CUBEMAP_NEGATIVEX :1;
				DWORD	DDSCAPS2_CUBEMAP_POSITIVEY :1;
				DWORD	DDSCAPS2_CUBEMAP_NEGATIVEY :1;
				DWORD	DDSCAPS2_CUBEMAP_POSITIVEZ :1;
				DWORD	DDSCAPS2_CUBEMAP_NEGATIVEZ :1;
				DWORD	:5;
				DWORD	DDSCAPS2_VOLUME :1;
			} dwCaps2;
			DWORD Reserved[2]; 

		}ddsCaps; //16-byte value that specifies the capabilities structure. 
		DWORD dwReserved2; 

 
	} head;



} DDSFile;