; /* * Written by José Fonseca */ #ifdef USE_MMX_ASM #include "matypes.h" /* integer multiplication - alpha plus one * * makes the following approximation to the division (Sree) * * rgb*a/255 ~= (rgb*(a+1)) >> 256 * * which is the fastest method that satisfies the following OpenGL criteria * * 0*0 = 0 and 255*255 = 255 * * note that MX1 is a register with 0xffffffffffffffff constant which can be easily obtained making * * PCMPEQW ( MX1, MX1 ) */ #define GMB_MULT_AP1( MP1, MA1, MP2, MA2, MX1 ) \ PSUBW ( MX1, MA1 ) /* a1 + 1 | a1 + 1 | a1 + 1 | a1 + 1 */ ;\ PMULLW ( MP1, MA1 ) /* t1 = p1*a1 */ ;\ ;\ TWO(PSUBW ( MX1, MA2 )) /* a2 + 1 | a2 + 1 | a2 + 1 | a2 + 1 */ ;\ TWO(PMULLW ( MP2, MA2 )) /* t2 = p2*a2 */ ;\ ;\ PSRLW ( CONST(8), MA1 ) /* t1 >> 8 ~= t1/255 */ ;\ TWO(PSRLW ( CONST(8), MA2 )) /* t2 >> 8 ~= t2/255 */ /* integer multiplication - geometric series * * takes the geometric series approximation to the division * * t/255 = (t >> 8) + (t >> 16) + (t >> 24) .. * * in this case just the first two terms to fit in 16bit arithmetic * * t/255 ~= (t + (t >> 8)) >> 8 * * note that just by itself it doesn't satisfies the OpenGL criteria, as 255*255 = 254, * so the special case a = 255 must be accounted or roundoff must be used */ #define GMB_MULT_GS( MP1, MA1, MP2, MA2 ) \ PMULLW ( MP1, MA1 ) /* t1 = p1*a1 */ ;\ TWO(PMULLW ( MP2, MA2 )) /* t2 = p2*a2 */ ;\ ;\ MOVQ ( MA1, MP1 ) ;\ PSRLW ( CONST(8), MA1 ) /* t1 >> 8 */ ;\ ;\ TWO(MOVQ ( MA2, MP2 )) ;\ TWO(PSRLW ( CONST(8), MA2 )) /* t2 >> 8 */ ;\ ;\ PADDW ( MP1, MA1 ) /* t1 + (t1 >> 8) ~= (t1/255) << 8 */ ;\ PSRLW ( CONST(8), MA1 ) /* sa1 | sb1 | sg1 | sr1 */ ;\ ;\ TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\ TWO(PSRLW ( CONST(8), MA2 )) /* sa2 | sb2 | sg2 | sr2 */ /* integer multiplication - geometric series plus rounding * * when using a geometric series division instead of truncating the result * use roundoff in the approximation (Jim Blinn) * * t = rgb*a + 0x80 * * achieving the exact results * * note that M80 is register with the 0x0080008000800080 constant */ #define GMB_MULT_GSR( MP1, MA1, MP2, MA2, M80 ) \ PMULLW ( MP1, MA1 ) /* t1 = p1*a1 */ ;\ PADDW ( M80, MA1 ) /* t1 += 0x80 */ ;\ ;\ TWO(PMULLW ( MP2, MA2 )) /* t2 = p2*a2 */ ;\ TWO(PADDW ( M80, MA2 )) /* t2 += 0x80 */ ;\ ;\ MOVQ ( MA1, MP1 ) ;\ PSRLW ( CONST(8), MA1 ) /* t1 >> 8 */ ;\ ;\ TWO(MOVQ ( MA2, MP2 )) ;\ TWO(PSRLW ( CONST(8), MA2 )) /* t2 >> 8 */ ;\ ;\ PADDW ( MP1, MA1 ) /* t1 + (t1 >> 8) ~= (t1/255) << 8 */ ;\ PSRLW ( CONST(8), MA1 ) /* sa1 | sb1 | sg1 | sr1 */ ;\ ;\ TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\ TWO(PSRLW ( CONST(8), MA2 )) /* sa2 | sb2 | sg2 | sr2 */ /* linear interpolation - geometric series */ #define GMB_LERP_GS( MP1, MQ1, MA1, MP2, MQ2, MA2) \ PSUBW ( MQ1, MP1 ) /* pa1 - qa1 | pb1 - qb1 | pg1 - qg1 | pr1 - qr1 */ ;\ PSLLW ( CONST(8), MQ1 ) /* q1 << 8 */ ;\ PMULLW ( MP1, MA1 ) /* t1 = (q1 - p1)*pa1 */ ;\ ;\ TWO(PSUBW ( MQ2, MP2 )) /* pa2 - qa2 | pb2 - qb2 | pg2 - qg2 | pr2 - qr2 */ ;\ TWO(PSLLW ( CONST(8), MQ2 )) /* q2 << 8 */ ;\ TWO(PMULLW ( MP2, MA2 )) /* t2 = (q2 - p2)*pa2 */ ;\ ;\ MOVQ ( MA1, MP1 ) ;\ PSRLW ( CONST(8), MA1 ) /* t1 >> 8 */ ;\ ;\ TWO(MOVQ ( MA2, MP2 )) ;\ TWO(PSRLW ( CONST(8), MA2 )) /* t2 >> 8 */ ;\ ;\ PADDW ( MP1, MA1 ) /* t1 + (t1 >> 8) ~= (t1/255) << 8 */ ;\ TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\ ;\ PADDW ( MQ1, MA1 ) /* (t1/255 + q1) << 8 */ ;\ TWO(PADDW ( MQ2, MA2 )) /* (t2/255 + q2) << 8 */ ;\ ;\ PSRLW ( CONST(8), MA1 ) /* sa1 | sb1 | sg1 | sr1 */ ;\ TWO(PSRLW ( CONST(8), MA2 )) /* sa2 | sb2 | sg2 | sr2 */ /* linear interpolation - geometric series with roundoff * * this is a generalization of Blinn's formula to signed arithmetic * * note that M80 is a register with the 0x0080008000800080 constant */ #define GMB_LERP_GSR( MP1, MQ1, MA1, MP2, MQ2, MA2, M80) \ PSUBW ( MQ1, MP1 ) /* pa1 - qa1 | pb1 - qb1 | pg1 - qg1 | pr1 - qr1 */ ;\ PSLLW ( CONST(8), MQ1 ) /* q1 << 8 */ ;\ PMULLW ( MP1, MA1 ) /* t1 = (q1 - p1)*pa1 */ ;\ ;\ TWO(PSUBW ( MQ2, MP2 )) /* pa2 - qa2 | pb2 - qb2 | pg2 - qg2 | pr2 - qr2 */ ;\ TWO(PSLLW ( CONST(8), MQ2 )) /* q2 << 8 */ ;\ TWO(PMULLW ( MP2, MA2 )) /* t2 = (q2 - p2)*pa2 */ ;\ ;\ PSRLW ( CONST(15), MP1 ) /* q1 > p1 ? 1 : 0 */ ;\ TWO(PSRLW ( CONST(15), MP2 )) /* q2 > q2 ? 1 : 0 */ ;\ ;\ PSLLW ( CONST(8), MP1 ) /* q1 > p1 ? 0x100 : 0 */ ;\ TWO(PSLLW ( CONST(8), MP2 )) /* q2 > q2 ? 0x100 : 0 */ ;\ ;\ PSUBW ( MP1, MA1 ) /* t1 -=? 0x100 */ ;\ TWO(PSUBW ( MP2, MA2 )) /* t2 -=? 0x100 */ ;\ ;\ PADDW ( M80, MA1 ) /* t1 += 0x80 */ ;\ TWO(PADDW ( M80, MA2 )) /* t2 += 0x80 */ ;\ ;\ MOVQ ( MA1, MP1 ) ;\ PSRLW ( CONST(8), MA1 ) /* t1 >> 8 */ ;\ ;\ TWO(MOVQ ( MA2, MP2 )) ;\ TWO(PSRLW ( CONST(8), MA2 )) /* t2 >> 8 */ ;\ ;\ PADDW ( MP1, MA1 ) /* t1 + (t1 >> 8) ~= (t1/255) << 8 */ ;\ TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\ ;\ PADDW ( MQ1, MA1 ) /* (t1/255 + q1) << 8 */ ;\ TWO(PADDW ( MQ2, MA2 )) /* (t2/255 + q2) << 8 */ ;\ ;\ PSRLW ( CONST(8), MA1 ) /* sa1 | sb1 | sg1 | sr1 */ ;\ TWO(PSRLW ( CONST(8), MA2 )) /* sa2 | sb2 | sg2 | sr2 */ /* linear interpolation - geometric series with correction * * instead of the roundoff this adds a small correction to satisfy the OpenGL criteria * * t/255 ~= (t + (t >> 8) + (t >> 15)) >> 8 * * note that although is faster than rounding off it doesn't give always the exact results */ #define GMB_LERP_GSC( MP1, MQ1, MA1, MP2, MQ2, MA2) \ PSUBW ( MQ1, MP1 ) /* pa1 - qa1 | pb1 - qb1 | pg1 - qg1 | pr1 - qr1 */ ;\ PSLLW ( CONST(8), MQ1 ) /* q1 << 8 */ ;\ PMULLW ( MP1, MA1 ) /* t1 = (q1 - p1)*pa1 */ ;\ ;\ TWO(PSUBW ( MQ2, MP2 )) /* pa2 - qa2 | pb2 - qb2 | pg2 - qg2 | pr2 - qr2 */ ;\ TWO(PSLLW ( CONST(8), MQ2 )) /* q2 << 8 */ ;\ TWO(PMULLW ( MP2, MA2 )) /* t2 = (q2 - p2)*pa2 */ ;\ ;\ MOVQ ( MA1, MP1 ) ;\ PSRLW ( CONST(8), MA1 ) /* t1 >> 8 */ ;\ ;\ TWO(MOVQ ( MA2, MP2 )) ;\ TWO(PSRLW ( CONST(8), MA2 )) /* t2 >> 8 */ ;\ ;\ PADDW ( MA1, MP1 ) /* t1 + (t1 >> 8) ~= (t1/255) << 8 */ ;\ PSRLW ( CONST(7), MA1 ) /* t1 >> 15 */ ;\ ;\ TWO(PADDW ( MA2, MP2 )) /* t2 + (t2 >> 8) ~= (t2/255) << 8 */ ;\ TWO(PSRLW ( CONST(7), MA2 )) /* t2 >> 15 */ ;\ ;\ PADDW ( MP1, MA1 ) /* t1 + (t1 >> 8) + (t1 >>15) ~= (t1/255) << 8 */ ;\ TWO(PADDW ( MP2, MA2 )) /* t2 + (t2 >> 8) + (t2 >>15) ~= (t2/255) << 8 */ ;\ ;\ PADDW ( MQ1, MA1 ) /* (t1/255 + q1) << 8 */ ;\ TWO(PADDW ( MQ2, MA2 )) /* (t2/255 + q2) << 8 */ ;\ ;\ PSRLW ( CONST(8), MA1 ) /* sa1 | sb1 | sg1 | sr1 */ ;\ TWO(PSRLW ( CONST(8), MA2 )) /* sa2 | sb2 | sg2 | sr2 */ /* common blending setup code * * note that M00 is a register with 0x0000000000000000 constant which can be easily obtained making * * PXOR ( M00, M00 ) */ #define GMB_LOAD(rgba, dest, MPP, MQQ) \ ONE(MOVD ( REGIND(rgba), MPP )) /* | | | | qa1 | qb1 | qg1 | qr1 */ ;\ ONE(MOVD ( REGIND(dest), MQQ )) /* | | | | pa1 | pb1 | pg1 | pr1 */ ;\ ;\ TWO(MOVQ ( REGIND(rgba), MPP )) /* qa2 | qb2 | qg2 | qr2 | qa1 | qb1 | qg1 | qr1 */ ;\ TWO(MOVQ ( REGIND(dest), MQQ )) /* pa2 | pb2 | pg2 | pr2 | pa1 | pb1 | pg1 | pr1 */ #define GMB_UNPACK(MP1, MQ1, MP2, MQ2, M00) \ TWO(MOVQ ( MP1, MP2 )) ;\ TWO(MOVQ ( MQ1, MQ2 )) ;\ ;\ PUNPCKLBW ( M00, MQ1 ) /* qa1 | qb1 | qg1 | qr1 */ ;\ TWO(PUNPCKHBW ( M00, MQ2 )) /* qa2 | qb2 | qg2 | qr2 */ ;\ PUNPCKLBW ( M00, MP1 ) /* pa1 | pb1 | pg1 | pr1 */ ;\ TWO(PUNPCKHBW ( M00, MP2 )) /* pa2 | pb2 | pg2 | pr2 */ #define GMB_ALPHA(MP1, MA1, MP2, MA2) \ MOVQ ( MP1, MA1 ) ;\ TWO(MOVQ ( MP2, MA2 )) ;\ ;\ PUNPCKHWD ( MA1, MA1 ) /* pa1 | pa1 | | */ ;\ TWO(PUNPCKHWD ( MA2, MA2 )) /* pa2 | pa2 | | */ ;\ PUNPCKHDQ ( MA1, MA1 ) /* pa1 | pa1 | pa1 | pa1 */ ;\ TWO(PUNPCKHDQ ( MA2, MA2 )) /* pa2 | pa2 | pa2 | pa2 */ #define GMB_PACK( MS1, MS2 ) \ PACKUSWB ( MS2, MS1 ) /* sa2 | sb2 | sg2 | sr2 | sa1 | sb1 | sg1 | sr1 */ ;\ #define GMB_STORE(rgba, MSS ) \ ONE(MOVD ( MSS, REGIND(rgba) )) /* | | | | sa1 | sb1 | sg1 | sr1 */ ;\ TWO(MOVQ ( MSS, REGIND(rgba) )) /* sa2 | sb2 | sg2 | sr2 | sa1 | sb1 | sg1 | sr1 */ /* Kevin F. Quinn 2 July 2006 * Replace data segment constants with text-segment * constants (via pushl/movq) SEG_DATA ALIGNDATA8 const_0080: D_LONG 0x00800080, 0x00800080 const_80: D_LONG 0x80808080, 0x80808080 */ #define const_0080_l 0x00800080 #define const_0080_h 0x00800080 #define const_80_l 0x80808080 #define const_80_h 0x80808080 SEG_TEXT /* Blend transparency function */ #define TAG(x) CONCAT(x,_transparency) #define LLTAG(x) LLBL2(x,_transparency) #define INIT \ PXOR ( MM0, MM0 ) /* 0x0000 | 0x0000 | 0x0000 | 0x0000 */ #define MAIN( rgba, dest ) \ GMB_LOAD( rgba, dest, MM1, MM2 ) ;\ GMB_UNPACK( MM1, MM2, MM4, MM5, MM0 ) ;\ GMB_ALPHA( MM1, MM3, MM4, MM6 ) ;\ GMB_LERP_GSC( MM1, MM2, MM3, MM4, MM5, MM6 ) ;\ GMB_PACK( MM3, MM6 ) ;\ GMB_STORE( rgba, MM3 ) #include "mmx_blendtmp.h" /* Blend add function * * FIXME: Add some loop unrolling here... */ #define TAG(x) CONCAT(x,_add) #define LLTAG(x) LLBL2(x,_add) #define INIT #define MAIN( rgba, dest ) \ ONE(MOVD ( REGIND(rgba), MM1 )) /* | | | | qa1 | qb1 | qg1 | qr1 */ ;\ ONE(MOVD ( REGIND(dest), MM2 )) /* | | | | pa1 | pb1 | pg1 | pr1 */ ;\ ONE(PADDUSB ( MM2, MM1 )) ;\ ONE(MOVD ( MM1, REGIND(rgba) )) /* | | | | sa1 | sb1 | sg1 | sr1 */ ;\ ;\ TWO(MOVQ ( REGIND(rgba), MM1 )) /* qa2 | qb2 | qg2 | qr2 | qa1 | qb1 | qg1 | qr1 */ ;\ TWO(PADDUSB ( REGIND(dest), MM1 )) /* sa2 | sb2 | sg2 | sr2 | sa1 | sb1 | sg1 | sr1 */ ;\ TWO(MOVQ ( MM1, REGIND(rgba) )) #include "mmx_blendtmp.h" /* Blend min function */ #define TAG(x) CONCAT(x,_min) #define LLTAG(x) LLBL2(x,_min) /* Kevin F. Quinn 2nd July 2006 * Replace data segment constants with text-segment instructions #define INIT \ MOVQ ( CONTENT(const_80), MM7 ) */ #define INIT \ PUSH_L ( CONST(const_80_h) ) /* 0x80| 0x80| 0x80| 0x80| 0x80| 0x80| 0x80| 0x80*/ ;\ PUSH_L ( CONST(const_80_l) ) ;\ MOVQ ( REGIND(ESP), MM7 ) ;\ ADD_L ( CONST(8), ESP) #define MAIN( rgba, dest ) \ GMB_LOAD( rgba, dest, MM1, MM2 ) ;\ MOVQ ( MM1, MM3 ) ;\ MOVQ ( MM2, MM4 ) ;\ PXOR ( MM7, MM3 ) /* unsigned -> signed */ ;\ PXOR ( MM7, MM4 ) /* unsigned -> signed */ ;\ PCMPGTB ( MM3, MM4 ) /* q > p ? 0xff : 0x00 */ ;\ PAND ( MM4, MM1 ) /* q > p ? p : 0 */ ;\ PANDN ( MM2, MM4 ) /* q > p ? 0 : q */ ;\ POR ( MM1, MM4 ) /* q > p ? p : q */ ;\ GMB_STORE( rgba, MM4 ) #include "mmx_blendtmp.h" /* Blend max function */ #define TAG(x) CONCAT(x,_max) #define LLTAG(x) LLBL2(x,_max) /* Kevin F. Quinn 2nd July 2006 * Replace data segment constants with text-segment instructions #define INIT \ MOVQ ( CONTENT(const_80), MM7 ) */ #define INIT \ PUSH_L ( CONST(const_80_l) ) /* 0x80| 0x80| 0x80| 0x80| 0x80| 0x80| 0x80| 0x80*/ ;\ PUSH_L ( CONST(const_80_h) ) ;\ MOVQ ( REGIND(ESP), MM7 ) ;\ ADD_L ( CONST(8), ESP) #define MAIN( rgba, dest ) \ GMB_LOAD( rgba, dest, MM1, MM2 ) ;\ MOVQ ( MM1, MM3 ) ;\ MOVQ ( MM2, MM4 ) ;\ PXOR ( MM7, MM3 ) /* unsigned -> signed */ ;\ PXOR ( MM7, MM4 ) /* unsigned -> signed */ ;\ PCMPGTB ( MM3, MM4 ) /* q > p ? 0xff : 0x00 */ ;\ PAND ( MM4, MM2 ) /* q > p ? q : 0 */ ;\ PANDN ( MM1, MM4 ) /* q > p ? 0 : p */ ;\ POR ( MM2, MM4 ) /* q > p ? p : q */ ;\ GMB_STORE( rgba, MM4 ) #include "mmx_blendtmp.h" /* Blend modulate function */ #define TAG(x) CONCAT(x,_modulate) #define LLTAG(x) LLBL2(x,_modulate) /* Kevin F. Quinn 2nd July 2006 * Replace data segment constants with text-segment instructions #define INIT \ MOVQ ( CONTENT(const_0080), MM7 ) */ #define INIT \ PXOR ( MM0, MM0 ) /* 0x0000 | 0x0000 | 0x0000 | 0x0000 */ ;\ PUSH_L ( CONST(const_0080_l) ) /* 0x0080 | 0x0080 | 0x0080 | 0x0080 */ ;\ PUSH_L ( CONST(const_0080_h) ) ;\ MOVQ ( REGIND(ESP), MM7 ) ;\ ADD_L ( CONST(8), ESP) #define MAIN( rgba, dest ) \ GMB_LOAD( rgba, dest, MM1, MM2 ) ;\ GMB_UNPACK( MM1, MM2, MM4, MM5, MM0 ) ;\ GMB_MULT_GSR( MM1, MM2, MM4, MM5, MM7 ) ;\ GMB_PACK( MM2, MM5 ) ;\ GMB_STORE( rgba, MM2 ) #include "mmx_blendtmp.h" #endif #if defined (__ELF__) && defined (__linux__) .section .note.GNU-stack,"",%progbits #endif