112 lines
1.9 KiB
PHP
112 lines
1.9 KiB
PHP
;-----------------------------------------------------------------------------
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align 4
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create_tone:
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;-------------------------------------------
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mov ebx,[tone_SIZE_Y]
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xor eax,eax
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dec al
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sub al,[tone_color.red]
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shl eax,24
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xor edx,edx
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div ebx
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mov [offset_y.red],eax
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xor eax,eax
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dec al
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sub al,[tone_color.green]
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shl eax,24
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xor edx,edx
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div ebx
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mov [offset_y.green],eax
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xor eax,eax
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dec al
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sub al,[tone_color.blue]
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shl eax,24
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xor edx,edx
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div ebx
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mov [offset_y.blue],eax
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;-------------------------------------------
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mov edi,[tone_area]
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xor ecx,ecx
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;-------------------------------------------
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align 4
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@@:
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mov eax,[tone_color]
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; blue
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mov edx,[offset_y.blue]
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call next_color_Y
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ror eax,8
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; green
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mov edx,[offset_y.green]
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call next_color_Y
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ror eax,8
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; red
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mov edx,[offset_y.red]
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call next_color_Y
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rol eax,16
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call tone_put_line
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add ecx,1
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cmp ecx,[tone_SIZE_X]
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jne @b
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ret
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;-----------------------------------------------------------------------------
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tone_put_line:
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push ecx
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mov ecx,eax
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mov ebx,[tone_SIZE_X]
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shl eax,24
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xor edx,edx
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div ebx
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mov [offset_x.blue],eax
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mov eax,ecx
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shr eax,8
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shl eax,24
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xor edx,edx
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div ebx
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mov [offset_x.green],eax
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mov eax,ecx
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shr eax,16
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shl eax,24
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xor edx,edx
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div ebx
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mov [offset_x.red],eax
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mov eax,ecx
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push ebx esi
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mov ecx,[tone_SIZE_X]
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xor edx,edx
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xor ebx,ebx
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xor esi,esi
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@@:
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mov eax,edx
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shr eax,24
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add edx,[offset_x.blue]
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mov [edi],al
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mov eax,ebx
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shr eax,24
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add ebx,[offset_x.green]
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mov [edi+1],al
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mov eax,esi
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shr eax,24
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add esi,[offset_x.red]
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mov [edi+2],al
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add edi,3
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dec ecx
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jnz @b
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pop esi ebx
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pop ecx
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ret
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;-----------------------------------------------------------------------------
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align 4
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next_color_Y:
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imul edx,ecx
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rol edx,8
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add al,dl
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ret
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;----------------------------------------------------------------------------- |