46 void CompressAlphaDxt3( u8 const* rgba, int mask, void* block )  in CompressAlphaDxt3()
48 	u8* bytes = reinterpret_cast< u8* >( block );  in CompressAlphaDxt3()
68 		bytes[i] = ( u8 )( quant1 | ( quant2 << 4 ) );  in CompressAlphaDxt3()
72 void DecompressAlphaDxt3( u8* rgba, void const* block )  in DecompressAlphaDxt3()
74 	u8 const* bytes = reinterpret_cast< u8 const* >( block );  in DecompressAlphaDxt3()
80 		u8 quant = bytes[i];  in DecompressAlphaDxt3()
83 		u8 lo = quant & 0x0f;  in DecompressAlphaDxt3()
84 		u8 hi = quant & 0xf0;  in DecompressAlphaDxt3()
100 static int FitCodes( u8 const* rgba, int mask, u8 const* codes, u8* indices )  in FitCodes()
134 		indices[i] = ( u8 )index;  in FitCodes()
142 static void WriteAlphaBlock( int alpha0, int alpha1, u8 const* indices, void* block )  in WriteAlphaBlock()
144 	u8* bytes = reinterpret_cast< u8* >( block );  in WriteAlphaBlock()
147 	bytes[0] = ( u8 )alpha0;  in WriteAlphaBlock()
148 	bytes[1] = ( u8 )alpha1;  in WriteAlphaBlock()
151 	u8* dest = bytes + 2;  in WriteAlphaBlock()
152 	u8 const* src = indices;  in WriteAlphaBlock()
167 			*dest++ = ( u8 )byte;  in WriteAlphaBlock()
172 static void WriteAlphaBlock5( int alpha0, int alpha1, u8 const* indices, void* block )  in WriteAlphaBlock5()
178 		u8 swapped[16];  in WriteAlphaBlock5()
181 			u8 index = indices[i];  in WriteAlphaBlock5()
202 static void WriteAlphaBlock7( int alpha0, int alpha1, u8 const* indices, void* block )  in WriteAlphaBlock7()
208 		u8 swapped[16];  in WriteAlphaBlock7()
211 			u8 index = indices[i];  in WriteAlphaBlock7()
230 void CompressAlphaDxt5( u8 const* rgba, int mask, void* block )  in CompressAlphaDxt5()
267 	u8 codes5[8];  in CompressAlphaDxt5()
268 	codes5[0] = ( u8 )min5;  in CompressAlphaDxt5()
269 	codes5[1] = ( u8 )max5;  in CompressAlphaDxt5()
271 		codes5[1 + i] = ( u8 )( ( ( 5 - i )*min5 + i*max5 )/5 );  in CompressAlphaDxt5()
276 	u8 codes7[8];  in CompressAlphaDxt5()
277 	codes7[0] = ( u8 )min7;  in CompressAlphaDxt5()
278 	codes7[1] = ( u8 )max7;  in CompressAlphaDxt5()
280 		codes7[1 + i] = ( u8 )( ( ( 7 - i )*min7 + i*max7 )/7 );  in CompressAlphaDxt5()
283 	u8 indices5[16];  in CompressAlphaDxt5()
284 	u8 indices7[16];  in CompressAlphaDxt5()
295 void DecompressAlphaDxt5( u8* rgba, void const* block )  in DecompressAlphaDxt5()
298 	u8 const* bytes = reinterpret_cast< u8 const* >( block );  in DecompressAlphaDxt5()
303 	u8 codes[8];  in DecompressAlphaDxt5()
304 	codes[0] = ( u8 )alpha0;  in DecompressAlphaDxt5()
305 	codes[1] = ( u8 )alpha1;  in DecompressAlphaDxt5()
310 			codes[1 + i] = ( u8 )( ( ( 5 - i )*alpha0 + i*alpha1 )/5 );  in DecompressAlphaDxt5()
318 			codes[1 + i] = ( u8 )( ( ( 7 - i )*alpha0 + i*alpha1 )/7 );  in DecompressAlphaDxt5()
322 	u8 indices[16];  in DecompressAlphaDxt5()
323 	u8 const* src = bytes + 2;  in DecompressAlphaDxt5()
324 	u8* dest = indices;  in DecompressAlphaDxt5()
339 			*dest++ = ( u8 )index;  in DecompressAlphaDxt5()