diff options
| author | Jose Fonseca <j_r_fonseca@yahoo.co.uk> | 2002-04-19 20:12:30 +0000 |
|---|---|---|
| committer | Jose Fonseca <j_r_fonseca@yahoo.co.uk> | 2002-04-19 20:12:30 +0000 |
| commit | 3fe2bb8933c15a7091838fd982dbad402fe6ad43 (patch) | |
| tree | da6c366c6230aab1b23afbeb8f97fc42f2ee3e55 /src/mesa/x86/mmx_blend.S | |
| parent | 4fa66fa85ccc1b35411c1deb65119cde6c9d44a4 (diff) | |
Added min and max blend functions.
Slight optimization of _mesa_mmx_blend_add.
Diffstat (limited to 'src/mesa/x86/mmx_blend.S')
| -rw-r--r-- | src/mesa/x86/mmx_blend.S | 77 |
1 files changed, 68 insertions, 9 deletions
diff --git a/src/mesa/x86/mmx_blend.S b/src/mesa/x86/mmx_blend.S index f3460465c9..259d71c2fa 100644 --- a/src/mesa/x86/mmx_blend.S +++ b/src/mesa/x86/mmx_blend.S @@ -5,6 +5,9 @@ #include "matypes.h" +/* FIXME: The pairing rules must be checked as they aren't being fully obeyed. + */ + /* integer multiplication - alpha plus one * * makes the following approximation to the division (Sree) @@ -238,20 +241,23 @@ TWO(PUNPCKHDQ ( MA2, MA2 )) /* pa2 | pa2 | pa PACKUSWB ( MS2, MS1 ) /* sa2 | sb2 | sg2 | sr2 | sa1 | sb1 | sg1 | sr1 */ ;\ #define GMB_STORE(rgba, MSS ) \ -ONE(MOVD ( MSS, REGIND(rgba) )) ;\ -TWO(MOVQ ( MSS, REGIND(rgba) )) +ONE(MOVD ( MSS, REGIND(rgba) )) /* | | | | sa1 | sb1 | sg1 | sr1 */ ;\ +TWO(MOVQ ( MSS, REGIND(rgba) )) /* sa2 | sb2 | sg2 | sr2 | sa1 | sb1 | sg1 | sr1 */ SEG_DATA ALIGNDATA8 +const_0080: + D_LONG 0x00800080, 0x00800080 + const_80: - D_LONG 0x00800080, 0x00800080 + D_LONG 0x80808080, 0x80808080 SEG_TEXT -/* common transparency blending mode +/* Blend transparency function */ #define TAG(x) x##_transparency @@ -270,7 +276,9 @@ const_80: #include "mmx_blendtmp.h" -/* add bleding mode +/* Blend add function + * + * FIXME: Add some loop unrolling here... */ #define TAG(x) x##_add @@ -278,21 +286,72 @@ const_80: #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) x##_min + +#define INIT \ + MOVQ ( CONTENT(const_80), MM7 ) /* 0x80| 0x80| 0x80| 0x80| 0x80| 0x80| 0x80| 0x80*/ + +#define MAIN( rgba, dest ) \ GMB_LOAD( rgba, dest, MM1, MM2 ) ;\ - PADDUSB ( MM1, MM2 ) ;\ - GMB_STORE( rgba, 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) x##_max + +#define INIT \ + MOVQ ( CONTENT(const_80), MM7 ) /* 0x80| 0x80| 0x80| 0x80| 0x80| 0x80| 0x80| 0x80*/ + +#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" -/* modulate blending mode +/* Blend modulate function */ #define TAG(x) x##_modulate #define INIT \ PXOR ( MM0, MM0 ) /* 0x0000 | 0x0000 | 0x0000 | 0x0000 */ ;\ - MOVQ ( CONTENT(const_80), MM7 ) /* 0xffff | 0xffff | 0xffff | 0xffff */ + MOVQ ( CONTENT(const_0080), MM7 ) /* 0x0080 | 0x0080 | 0x0080 | 0x0080 */ #define MAIN( rgba, dest ) \ GMB_LOAD( rgba, dest, MM1, MM2 ) ;\ |