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Add info about Valve's texture format.

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castano 2012-02-14 16:15:20 +00:00
parent d44a65c7b7
commit cb6c18efa4
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src/nvimage/ValveTextureFormat.h Normal file
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/*
For more info:
http://developer.valvesoftware.com/wiki/VTF
File Layout:
VTF Header
VTF Low Resolution Image Data
For Each Mipmap (Smallest to Largest)
For Each Frame (First to Last)
For Each Face (First to Last)
For Each Z Slice (Min to Max; Varies with Mipmap)
VTF High Resolution Image Data
*/
enum
{
IMAGE_FORMAT_NONE = -1,
IMAGE_FORMAT_RGBA8888 = 0,
IMAGE_FORMAT_ABGR8888,
IMAGE_FORMAT_RGB888,
IMAGE_FORMAT_BGR888,
IMAGE_FORMAT_RGB565,
IMAGE_FORMAT_I8,
IMAGE_FORMAT_IA88,
IMAGE_FORMAT_P8,
IMAGE_FORMAT_A8,
IMAGE_FORMAT_RGB888_BLUESCREEN,
IMAGE_FORMAT_BGR888_BLUESCREEN,
IMAGE_FORMAT_ARGB8888,
IMAGE_FORMAT_BGRA8888,
IMAGE_FORMAT_DXT1,
IMAGE_FORMAT_DXT3,
IMAGE_FORMAT_DXT5,
IMAGE_FORMAT_BGRX8888,
IMAGE_FORMAT_BGR565,
IMAGE_FORMAT_BGRX5551,
IMAGE_FORMAT_BGRA4444,
IMAGE_FORMAT_DXT1_ONEBITALPHA,
IMAGE_FORMAT_BGRA5551,
IMAGE_FORMAT_UV88,
IMAGE_FORMAT_UVWQ8888,
IMAGE_FORMAT_RGBA16161616F,
IMAGE_FORMAT_RGBA16161616,
IMAGE_FORMAT_UVLX8888,
IMAGE_FORMAT_R32F, //!< = Luminance - 32 bpp
IMAGE_FORMAT_RGB323232F, //!< = Red, Green, Blue - 96 bpp
IMAGE_FORMAT_RGBA32323232F, //!< = Red, Green, Blue, Alpha - 128 bpp
IMAGE_FORMAT_NV_DST16,
IMAGE_FORMAT_NV_DST24,
IMAGE_FORMAT_NV_INTZ,
IMAGE_FORMAT_NV_RAWZ,
IMAGE_FORMAT_ATI_DST16,
IMAGE_FORMAT_ATI_DST24,
IMAGE_FORMAT_NV_NULL,
IMAGE_FORMAT_ATI2N,
IMAGE_FORMAT_ATI1N,
};
enum
{
TEXTUREFLAGS_POINTSAMPLE = 0x00000001,
TEXTUREFLAGS_TRILINEAR = 0x00000002,
TEXTUREFLAGS_CLAMPS = 0x00000004,
TEXTUREFLAGS_CLAMPT = 0x00000008,
TEXTUREFLAGS_ANISOTROPIC = 0x00000010,
TEXTUREFLAGS_HINT_DXT5 = 0x00000020,
TEXTUREFLAGS_NOCOMPRESS = 0x00000040,
TEXTUREFLAGS_NORMAL = 0x00000080,
TEXTUREFLAGS_NOMIP = 0x00000100,
TEXTUREFLAGS_NOLOD = 0x00000200,
TEXTUREFLAGS_MINMIP = 0x00000400,
TEXTUREFLAGS_PROCEDURAL = 0x00000800,
TEXTUREFLAGS_ONEBITALPHA = 0x00001000,
TEXTUREFLAGS_EIGHTBITALPHA = 0x00002000,
TEXTUREFLAGS_ENVMAP = 0x00004000,
TEXTUREFLAGS_RENDERTARGET = 0x00008000,
TEXTUREFLAGS_DEPTHRENDERTARGET = 0x00010000,
TEXTUREFLAGS_NODEBUGOVERRIDE = 0x00020000,
TEXTUREFLAGS_SINGLECOPY = 0x00040000,
TEXTUREFLAGS_ONEOVERMIPLEVELINALPHA = 0x00080000,
TEXTUREFLAGS_PREMULTCOLORBYONEOVERMIPLEVEL = 0x00100000,
TEXTUREFLAGS_NORMALTODUDV = 0x00200000,
TEXTUREFLAGS_ALPHATESTMIPGENERATION = 0x00400000,
TEXTUREFLAGS_NODEPTHBUFFER = 0x00800000,
TEXTUREFLAGS_NICEFILTERED = 0x01000000,
TEXTUREFLAGS_CLAMPU = 0x02000000
};
struct VtfHeader
{
char signature[4]; // File signature ("VTF\0").
uint32 version[2]; // version[0].version[1] (currently 7.2).
uint32 headerSize; // Size of the header struct (16 byte aligned; currently 80 bytes).
// 7.0
uint16 width; // Width of the largest mipmap in pixels. Must be a power of 2.
uint16 height; // Height of the largest mipmap in pixels. Must be a power of 2.
uint32 flags; // VTF flags.
uint16 frames; // Number of frames, if animated (1 for no animation).
uint16 firstFrame; // First frame in animation (0 based).
uint8 padding0[4]; // reflectivity padding (16 byte alignment).
float reflectivity[3]; // reflectivity vector.
uint8 padding1[4]; // reflectivity padding (8 byte packing).
float bumpmapScale; // Bumpmap scale.
uint32 highResImageFormat; // High resolution image format.
uint8 mipmapCount; // Number of mipmaps.
uint32 lowResImageFormat; // Low resolution image format (always DXT1).
uint8 lowResImageWidth; // Low resolution image width.
uint8 lowResImageHeight; // Low resolution image height.
// 7.2
uint16 depth; // Depth of the largest mipmap in pixels.
// Must be a power of 2. Can be 0 or 1 for a 2D texture (v7.2 only).
};