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109 lines
4.4 KiB
109 lines
4.4 KiB
#pragma once |
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/* |
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======================================================================== |
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internal image format |
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typically expanded to rgba buffer |
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NOTE: number at end of pixelformat name it's a total bitscount e.g. PF_RGB_24 == PF_RGB_888 |
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======================================================================== |
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*/ |
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#define ImageRAW( type ) (type == PF_RGBA_32 || type == PF_BGRA_32 || type == PF_RGB_24 || type == PF_BGR_24) |
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#define ImageDXT( type ) (type == PF_DXT1 || type == PF_DXT3 || type == PF_DXT5 || type == PF_ATI2) |
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typedef enum |
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{ |
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PF_UNKNOWN = 0, |
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PF_INDEXED_24, // inflated palette (768 bytes) |
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PF_INDEXED_32, // deflated palette (1024 bytes) |
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PF_RGBA_32, // normal rgba buffer |
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PF_BGRA_32, // big endian RGBA (MacOS) |
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PF_RGB_24, // uncompressed dds or another 24-bit image |
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PF_BGR_24, // big-endian RGB (MacOS) |
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PF_DXT1, // s3tc DXT1 format |
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PF_DXT3, // s3tc DXT3 format |
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PF_DXT5, // s3tc DXT5 format |
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PF_ATI2, // latc ATI2N format |
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PF_TOTALCOUNT, // must be last |
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} pixformat_t; |
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typedef struct bpc_desc_s |
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{ |
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int format; // pixelformat |
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char name[16]; // used for debug |
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uint glFormat; // RGBA format |
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int bpp; // channels (e.g. rgb = 3, rgba = 4) |
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} bpc_desc_t; |
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// imagelib global settings |
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typedef enum |
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{ |
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IL_USE_LERPING = BIT(0), // lerping images during resample |
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IL_KEEP_8BIT = BIT(1), // don't expand paletted images |
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IL_ALLOW_OVERWRITE = BIT(2), // allow to overwrite stored images |
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IL_DONTFLIP_TGA = BIT(3), // Steam background completely ignore tga attribute 0x20 (stupid lammers!) |
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IL_DDS_HARDWARE = BIT(4), // DXT compression is support |
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IL_LOAD_DECAL = BIT(5), // special mode for load gradient decals |
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IL_OVERVIEW = BIT(6), // overview required some unque operations |
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} ilFlags_t; |
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// goes into rgbdata_t->encode |
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#define DXT_ENCODE_DEFAULT 0 // don't use custom encoders |
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#define DXT_ENCODE_COLOR_YCoCg 0x1A01 // make sure that value dosn't collide with anything |
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#define DXT_ENCODE_ALPHA_1BIT 0x1A02 // normal 1-bit alpha |
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#define DXT_ENCODE_ALPHA_8BIT 0x1A03 // normal 8-bit alpha |
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#define DXT_ENCODE_ALPHA_SDF 0x1A04 // signed distance field |
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#define DXT_ENCODE_NORMAL_AG_ORTHO 0x1A05 // orthographic projection |
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#define DXT_ENCODE_NORMAL_AG_STEREO 0x1A06 // stereographic projection |
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#define DXT_ENCODE_NORMAL_AG_PARABOLOID 0x1A07 // paraboloid projection |
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#define DXT_ENCODE_NORMAL_AG_QUARTIC 0x1A08 // newton method |
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#define DXT_ENCODE_NORMAL_AG_AZIMUTHAL 0x1A09 // Lambert Azimuthal Equal-Area |
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// rgbdata output flags |
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typedef enum |
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{ |
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// rgbdata->flags |
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IMAGE_CUBEMAP = BIT(0), // it's 6-sides cubemap buffer |
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IMAGE_HAS_ALPHA = BIT(1), // image contain alpha-channel |
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IMAGE_HAS_COLOR = BIT(2), // image contain RGB-channel |
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IMAGE_COLORINDEX = BIT(3), // all colors in palette is gradients of last color (decals) |
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IMAGE_HAS_LUMA = BIT(4), // image has luma pixels (q1-style maps) |
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IMAGE_SKYBOX = BIT(5), // only used by FS_SaveImage - for write right suffixes |
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IMAGE_QUAKESKY = BIT(6), // it's a quake sky double layered clouds (so keep it as 8 bit) |
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IMAGE_DDS_FORMAT = BIT(7), // a hint for GL loader |
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IMAGE_MULTILAYER = BIT(8), // to differentiate from 3D texture |
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IMAGE_ONEBIT_ALPHA = BIT(9), // binary alpha |
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IMAGE_QUAKEPAL = BIT(10), // image has quake1 palette |
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// Image_Process manipulation flags |
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IMAGE_FLIP_X = BIT(16), // flip the image by width |
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IMAGE_FLIP_Y = BIT(17), // flip the image by height |
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IMAGE_ROT_90 = BIT(18), // flip from upper left corner to down right corner |
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IMAGE_ROT180 = IMAGE_FLIP_X|IMAGE_FLIP_Y, |
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IMAGE_ROT270 = IMAGE_FLIP_X|IMAGE_FLIP_Y|IMAGE_ROT_90, |
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IMAGE_EMBOSS = BIT(19), // apply emboss mapping |
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IMAGE_RESAMPLE = BIT(20), // resample image to specified dims |
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// reserved |
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// reserved |
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IMAGE_FORCE_RGBA = BIT(23), // force image to RGBA buffer |
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IMAGE_MAKE_LUMA = BIT(24), // create luma texture from indexed |
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IMAGE_QUANTIZE = BIT(25), // make indexed image from 24 or 32- bit image |
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IMAGE_LIGHTGAMMA = BIT(26), // apply gamma for image |
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IMAGE_REMAP = BIT(27), // interpret width and height as top and bottom color |
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} imgFlags_t; |
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typedef struct rgbdata_s |
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{ |
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word width; // image width |
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word height; // image height |
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word depth; // image depth |
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uint type; // compression type |
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uint flags; // misc image flags |
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word encode; // DXT may have custom encoder, that will be decoded in GLSL-side |
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byte numMips; // mipmap count |
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byte *palette; // palette if present |
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byte *buffer; // image buffer |
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rgba_t fogParams; // some water textures in hl1 has info about fog color and alpha |
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size_t size; // for bounds checking |
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} rgbdata_t; |
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