Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 70 | giacomo | 1 | /* |
| 2 | * Written by José Fonseca <j_r_fonseca@yahoo.co.uk> |
||
| 3 | */ |
||
| 4 | |||
| 5 | |||
| 6 | /* |
||
| 7 | * void _mesa_mmx_blend( GLcontext *ctx, |
||
| 8 | * GLuint n, |
||
| 9 | * const GLubyte mask[], |
||
| 10 | * GLchan rgba[][4], |
||
| 11 | * CONST GLchan dest[][4] ) |
||
| 12 | * |
||
| 13 | */ |
||
| 14 | ALIGNTEXT16 |
||
| 15 | GLOBL GLNAME( TAG(_mesa_mmx_blend) ) |
||
| 16 | |||
| 17 | GLNAME( TAG(_mesa_mmx_blend) ): |
||
| 18 | |||
| 19 | PUSH_L ( EBP ) |
||
| 20 | MOV_L ( ESP, EBP ) |
||
| 21 | PUSH_L ( ESI ) |
||
| 22 | PUSH_L ( EDI ) |
||
| 23 | PUSH_L ( EBX ) |
||
| 24 | |||
| 25 | MOV_L ( REGOFF(12, EBP), ECX ) /* n */ |
||
| 26 | CMP_L ( CONST(0), ECX) |
||
| 27 | JE ( LLBL ( TAG(GMB_return) ) ) |
||
| 28 | |||
| 29 | MOV_L ( REGOFF(16, EBP), EBX ) /* mask */ |
||
| 30 | MOV_L ( REGOFF(20, EBP), EDI ) /* rgba */ |
||
| 31 | MOV_L ( REGOFF(24, EBP), ESI ) /* dest */ |
||
| 32 | |||
| 33 | INIT |
||
| 34 | |||
| 35 | TEST_L ( CONST(4), EDI ) /* align rgba on an 8-byte boundary */ |
||
| 36 | JZ ( LLBL ( TAG(GMB_align_end) ) ) |
||
| 37 | |||
| 38 | CMP_B ( CONST(0), REGIND(EBX) ) /* *mask == 0 */ |
||
| 39 | JE ( LLBL ( TAG(GMB_align_continue) ) ) |
||
| 40 | |||
| 41 | /* runin */ |
||
| 42 | #define ONE(x) x |
||
| 43 | #define TWO(x) |
||
| 44 | MAIN ( EDI, ESI ) |
||
| 45 | #undef ONE |
||
| 46 | #undef TWO |
||
| 47 | |||
| 48 | LLBL ( TAG(GMB_align_continue) ): |
||
| 49 | |||
| 50 | DEC_L ( ECX ) /* n -= 1 */ |
||
| 51 | INC_L ( EBX ) /* mask += 1 */ |
||
| 52 | ADD_L ( CONST(4), EDI ) /* rgba += 1 */ |
||
| 53 | ADD_L ( CONST(4), ESI ) /* dest += 1 */ |
||
| 54 | |||
| 55 | LLBL ( TAG(GMB_align_end) ): |
||
| 56 | |||
| 57 | CMP_L ( CONST(2), ECX) |
||
| 58 | JB ( LLBL ( TAG(GMB_loop_end) ) ) |
||
| 59 | |||
| 60 | ALIGNTEXT16 |
||
| 61 | LLBL ( TAG(GMB_loop_begin) ): |
||
| 62 | |||
| 63 | CMP_W ( CONST(0), REGIND(EBX) ) /* *mask == 0 && *(mask + 1) == 0 */ |
||
| 64 | JE ( LLBL ( TAG(GMB_loop_continue) ) ) |
||
| 65 | |||
| 66 | /* main loop */ |
||
| 67 | #define ONE(x) |
||
| 68 | #define TWO(x) x |
||
| 69 | MAIN ( EDI, ESI ) |
||
| 70 | #undef ONE |
||
| 71 | #undef TWO |
||
| 72 | |||
| 73 | LLBL ( TAG(GMB_loop_continue) ): |
||
| 74 | |||
| 75 | DEC_L ( ECX ) |
||
| 76 | DEC_L ( ECX ) /* n -= 2 */ |
||
| 77 | ADD_L ( CONST(2), EBX ) /* mask += 2 */ |
||
| 78 | ADD_L ( CONST(8), EDI ) /* rgba += 2 */ |
||
| 79 | ADD_L ( CONST(8), ESI ) /* dest += 2 */ |
||
| 80 | CMP_L ( CONST(2), ECX ) |
||
| 81 | JAE ( LLBL ( TAG(GMB_loop_begin) ) ) |
||
| 82 | |||
| 83 | LLBL ( TAG(GMB_loop_end) ): |
||
| 84 | |||
| 85 | CMP_L ( CONST(1), ECX ) |
||
| 86 | JB ( LLBL ( TAG(GMB_done) ) ) |
||
| 87 | |||
| 88 | CMP_B ( CONST(0), REGIND(EBX) ) /* *mask == 0 */ |
||
| 89 | JE ( LLBL ( TAG(GMB_done) ) ) |
||
| 90 | |||
| 91 | /* runout */ |
||
| 92 | #define ONE(x) x |
||
| 93 | #define TWO(x) |
||
| 94 | MAIN ( EDI, ESI ) |
||
| 95 | #undef ONE |
||
| 96 | #undef TWO |
||
| 97 | |||
| 98 | LLBL ( TAG(GMB_done) ): |
||
| 99 | |||
| 100 | EMMS |
||
| 101 | |||
| 102 | LLBL ( TAG(GMB_return) ): |
||
| 103 | |||
| 104 | POP_L ( EBX ) |
||
| 105 | POP_L ( EDI ) |
||
| 106 | POP_L ( ESI ) |
||
| 107 | MOV_L ( EBP, ESP ) |
||
| 108 | POP_L ( EBP ) |
||
| 109 | RET |
||
| 110 | |||
| 111 | #undef TAG |
||
| 112 | #undef INIT |
||
| 113 | #undef MAIN |