📄 spp8x8.s
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/******************************************************************************//* *//* RAINE 8x8 PACKED 4 BPP TILE DRAWING *//* *//******************************************************************************//* Functions for packed sprites (2 pixels/byte)*/ #include "asmdefs.inc"CODE_SEGFUNC(Draw8x8_Trans_Packed_Mapped) pushl %ebp pushl %edi pushl %esi pushl %ebx movl 20(%esp),%esi // source movl 28(%esp),%eax // y movl %esi,%edx sall $2,%eax addl $8*4,%edx // tile end movl 0xDEADBEEF(%eax),%ediblin_04: movl %edx,endc_04-4 movl 32(%esp),%ebp // cmap addl 24(%esp),%edi // x xorl %edx,%edx jmp 9f // Explanation of this weirdness (from Karma) : // Tests showed that this loop is MUCH faster if it is aligned. // So this jump will make the whole thing faster because it will be // aligned....align 8 9: movl (%esi),%eax testl %eax,%eax jz 8f movl %eax,%ebx andl $0x0F0F0F0F,%eax shrl $4,%ebx andl $0x0F0F0F0F,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,1(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,3(%edi)7: testb %bh,%bh jz 7f movb %bh,%dl movb (%ebp,%edx),%al movb %al,2(%edi)7: shr $16,%eax shr $16,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,5(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,4(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,7(%edi)7: testb %bh,%bh jz 8f movb %bh,%dl movb (%ebp,%edx),%al movb %al,6(%edi)8: addl $4,%esi // Next Tile Line addl $0xDEADBEEF,%edi // Next Screen Linebitw_04: cmp $0xDEADBEEF,%esiendc_04: jne 9b popl %ebx popl %esi popl %edi popl %ebp retFUNC(Draw8x8_Trans_Packed_Mapped_FlipY) pushl %ebp pushl %edi pushl %esi pushl %ebx movl 20(%esp),%esi // source movl 28(%esp),%eax // y movl %esi,%edx sall $2,%eax addl $8*4,%edx // tile end movl 0xDEADBEEF(%eax),%ediblin_05: movl %edx,endc_05-4 movl 32(%esp),%ebp // cmap addl 24(%esp),%edi // x xorl %edx,%edx jmp 9f.align 8 9: movl (%esi),%eax testl %eax,%eax jz 8f movl %eax,%ebx andl $0x0F0F0F0F,%eax shrl $4,%ebx andl $0x0F0F0F0F,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,7-1(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,7(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,7-3(%edi)7: testb %bh,%bh jz 7f movb %bh,%dl movb (%ebp,%edx),%al movb %al,7-2(%edi)7: shr $16,%eax shr $16,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,7-5(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,7-4(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,(%edi)7: testb %bh,%bh jz 8f movb %bh,%dl movb (%ebp,%edx),%al movb %al,7-6(%edi)8: addl $4,%esi // Next Tile Line addl $0xDEADBEEF,%edi // Next Screen Linebitw_05: cmp $0xDEADBEEF,%esiendc_05: jne 9b popl %ebx popl %esi popl %edi popl %ebp retFUNC(Draw8x8_Trans_Packed_Mapped_FlipX) pushl %ebp pushl %edi pushl %esi pushl %ebx movl 20(%esp),%esi // source movl 28(%esp),%eax // y movl %esi,%edx sall $2,%eax addl $8*4,%edx // tile end movl 0xDEADBEEF(%eax),%ediblin_06: movl %edx,endc_06-4 movl 32(%esp),%ebp // cmap addl 24(%esp),%edi // x xorl %edx,%edx jmp 9f.align 8 9: movl (%esi),%eax testl %eax,%eax jz 8f movl %eax,%ebx andl $0x0F0F0F0F,%eax shrl $4,%ebx andl $0x0F0F0F0F,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,1(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,3(%edi)7: testb %bh,%bh jz 7f movb %bh,%dl movb (%ebp,%edx),%al movb %al,2(%edi)7: shr $16,%eax shr $16,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,5(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,4(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,7(%edi)7: testb %bh,%bh jz 8f movb %bh,%dl movb (%ebp,%edx),%al movb %al,6(%edi)8: addl $4,%esi // Next Tile Line subl $0xDEADBEEF,%edi // Next Screen Linebitw_06: cmp $0xDEADBEEF,%esiendc_06: jne 9b popl %ebx popl %esi popl %edi popl %ebp retFUNC(Draw8x8_Trans_Packed_Mapped_FlipXY) pushl %ebp pushl %edi pushl %esi pushl %ebx movl 20(%esp),%esi // source movl 28(%esp),%eax // y movl %esi,%edx sall $2,%eax addl $8*4,%edx // tile end movl 0xDEADBEEF(%eax),%ediblin_07: movl %edx,endc_07-4 movl 32(%esp),%ebp // cmap addl 24(%esp),%edi // x xorl %edx,%edx jmp 9f.align 8 9: movl (%esi),%eax testl %eax,%eax jz 8f movl %eax,%ebx andl $0x0F0F0F0F,%eax shrl $4,%ebx andl $0x0F0F0F0F,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,7-1(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,7(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,7-3(%edi)7: testb %bh,%bh jz 7f movb %bh,%dl movb (%ebp,%edx),%al movb %al,7-2(%edi)7: shr $16,%eax shr $16,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,7-5(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,7-4(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,(%edi)7: testb %bh,%bh jz 8f movb %bh,%dl movb (%ebp,%edx),%al movb %al,7-6(%edi)8: addl $4,%esi // Next Tile Line subl $0xDEADBEEF,%edi // Next Screen Linebitw_07: cmp $0xDEADBEEF,%esiendc_07: jne 9b popl %ebx popl %esi popl %edi popl %ebp retFUNC(Draw8x8_Trans_Packed_Mapped_SwapWord) pushl %ebp pushl %edi pushl %esi pushl %ebx movl 20(%esp),%esi // source movl 28(%esp),%eax // y movl %esi,%edx sall $2,%eax addl $8*4,%edx // tile end movl 0xDEADBEEF(%eax),%ediblin_12: movl %edx,endc_12-4 movl 32(%esp),%ebp // cmap addl 24(%esp),%edi // x xorl %edx,%edx jmp 9f.align 8 9: movl (%esi),%eax testl %eax,%eax jz 8f movl %eax,%ebx andl $0x0F0F0F0F,%eax shrl $4,%ebx andl $0x0F0F0F0F,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,5(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,4(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,7(%edi)7: testb %bh,%bh jz 7f movb %bh,%dl movb (%ebp,%edx),%al movb %al,6(%edi)7: shr $16,%eax shr $16,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,1(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,3(%edi)7: testb %bh,%bh jz 8f movb %bh,%dl movb (%ebp,%edx),%al movb %al,2(%edi)8: addl $4,%esi // Next Tile Line addl $0xDEADBEEF,%edi // Next Screen Linebitw_12: cmp $0xDEADBEEF,%esiendc_12: jne 9b popl %ebx popl %esi popl %edi popl %ebp retFUNC(Draw8x8_Trans_Packed_Mapped_SwapWord_FlipY) pushl %ebp pushl %edi pushl %esi pushl %ebx movl 20(%esp),%esi // source movl 28(%esp),%eax // y movl %esi,%edx sall $2,%eax addl $8*4,%edx // tile end movl 0xDEADBEEF(%eax),%ediblin_13: movl %edx,endc_13-4 movl 32(%esp),%ebp // cmap addl 24(%esp),%edi // x xorl %edx,%edx jmp 9f.align 8 9: movl (%esi),%eax testl %eax,%eax jz 8f movl %eax,%ebx andl $0x0F0F0F0F,%eax shrl $4,%ebx andl $0x0F0F0F0F,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,7-5(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,7-4(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,(%edi)7: testb %bh,%bh jz 7f movb %bh,%dl movb (%ebp,%edx),%al movb %al,7-6(%edi)7: shr $16,%eax shr $16,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,7-1(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,7-0(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,7-3(%edi)7: testb %bh,%bh jz 8f movb %bh,%dl movb (%ebp,%edx),%al movb %al,7-2(%edi)8: addl $4,%esi // Next Tile Line addl $0xDEADBEEF,%edi // Next Screen Linebitw_13: cmp $0xDEADBEEF,%esiendc_13: jne 9b popl %ebx popl %esi popl %edi popl %ebp retFUNC(Draw8x8_Trans_Packed_Mapped_SwapWord_FlipX) pushl %ebp pushl %edi pushl %esi pushl %ebx movl 20(%esp),%esi // source movl 28(%esp),%eax // y movl %esi,%edx sall $2,%eax addl $8*4,%edx // tile end movl 0xDEADBEEF(%eax),%ediblin_14: movl %edx,endc_14-4 movl 32(%esp),%ebp // cmap addl 24(%esp),%edi // x xorl %edx,%edx jmp 9f.align 8 9: movl (%esi),%eax testl %eax,%eax jz 8f movl %eax,%ebx andl $0x0F0F0F0F,%eax shrl $4,%ebx andl $0x0F0F0F0F,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,5(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,4(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,7(%edi)7: testb %bh,%bh jz 7f movb %bh,%dl movb (%ebp,%edx),%al movb %al,6(%edi)7: shr $16,%eax shr $16,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,1(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,3(%edi)7: testb %bh,%bh jz 8f movb %bh,%dl movb (%ebp,%edx),%al movb %al,2(%edi)8: addl $4,%esi // Next Tile Line subl $0xDEADBEEF,%edi // Next Screen Linebitw_14: cmp $0xDEADBEEF,%esiendc_14: jne 9b popl %ebx popl %esi popl %edi popl %ebp retFUNC(Draw8x8_Trans_Packed_Mapped_SwapWord_FlipXY) pushl %ebp pushl %edi pushl %esi pushl %ebx movl 20(%esp),%esi // source movl 28(%esp),%eax // y movl %esi,%edx sall $2,%eax addl $8*4,%edx // tile end movl 0xDEADBEEF(%eax),%ediblin_15: movl %edx,endc_15-4 movl 32(%esp),%ebp // cmap addl 24(%esp),%edi // x xorl %edx,%edx jmp 9f.align 8 9: movl (%esi),%eax testl %eax,%eax jz 8f movl %eax,%ebx andl $0x0F0F0F0F,%eax shrl $4,%ebx andl $0x0F0F0F0F,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,7-5(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,7-4(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,(%edi)7: testb %bh,%bh jz 7f movb %bh,%dl movb (%ebp,%edx),%al movb %al,7-6(%edi)7: shr $16,%eax shr $16,%ebx testb %al,%al jz 7f movb %al,%dl movb (%ebp,%edx),%al movb %al,7-1(%edi)7: testb %bl,%bl jz 7f movb %bl,%dl movb (%ebp,%edx),%al movb %al,7-0(%edi)7: testb %ah,%ah jz 7f movb %ah,%dl movb (%ebp,%edx),%al movb %al,7-3(%edi)7: testb %bh,%bh jz 8f movb %bh,%dl movb (%ebp,%edx),%al movb %al,7-2(%edi)8: addl $4,%esi // Next Tile Line subl $0xDEADBEEF,%edi // Next Screen Linebitw_15: cmp $0xDEADBEEF,%esiendc_15: jne 9b popl %ebx popl %esi popl %edi popl %ebp retFUNC(init_spp8x8asm) movl GLOBL(GameBitmap),%eax movl (%eax),%eax // Width// movl %eax,bitw_00-4// movl %eax,bitw_01-4// movl %eax,bitw_02-4// movl %eax,bitw_03-4 movl %eax,bitw_04-4 movl %eax,bitw_05-4 movl %eax,bitw_06-4 movl %eax,bitw_07-4// movl %eax,bitw_08-4// movl %eax,bitw_09-4// movl %eax,bitw_10-4// movl %eax,bitw_11-4 movl %eax,bitw_12-4 movl %eax,bitw_13-4 movl %eax,bitw_14-4 movl %eax,bitw_15-4 movl GLOBL(GameBitmap),%eax addl $64,%eax // Line 0// movl %eax,blin_00-4// movl %eax,blin_01-4 movl %eax,blin_04-4 movl %eax,blin_05-4// movl %eax,blin_08-4// movl %eax,blin_09-4 movl %eax,blin_12-4 movl %eax,blin_13-4 addl $7*4,%eax // Line 7// movl %eax,blin_02-4// movl %eax,blin_03-4 movl %eax,blin_06-4 movl %eax,blin_07-4// movl %eax,blin_10-4// movl %eax,blin_11-4 movl %eax,blin_14-4 movl %eax,blin_15-4 ret⌨️ 快捷键说明
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