2013-03-16 16:54:25 +01:00
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;-----------------------------------------------------------------------------
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align 4
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create_palette:
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;-------------------------------------------
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mov eax,[palette_SIZE_Y]
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mov ebx,6
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xor edx,edx
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div ebx
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mov [part_of_size_y],eax
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;-------------------------------------------
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mov ebx,eax
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mov eax,255 shl 24
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xor edx,edx
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div ebx
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mov [offset_y],eax
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;-------------------------------------------
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mov edi,[palette_area]
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mov edx,[offset_y]
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;-------------------------------------------
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xor ecx,ecx
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2021-07-04 13:53:40 +02:00
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mov eax,0xFF0000 ;there was [tone_area] which seems to be a bug
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2013-03-16 16:54:25 +01:00
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;-------------------------------------------
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align 4
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@@:
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call palette_put_line
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; blue
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call next_color
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add ecx,1
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cmp ecx,[part_of_size_y]
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jne @b
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;-------------------------------------------
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mov ecx,[part_of_size_y]
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;-------------------------------------------
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align 4
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@@:
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call palette_put_line
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; red
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ror eax,16
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call next_color
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rol eax,16
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sub ecx,1
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jne @b
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;-------------------------------------------
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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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call palette_put_line
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; green
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ror eax,8
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call next_color
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rol eax,8
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add ecx,1
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cmp ecx,[part_of_size_y]
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jne @b
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;-------------------------------------------
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mov ecx,[part_of_size_y]
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;-------------------------------------------
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align 4
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@@:
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call palette_put_line
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; blue
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call next_color
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sub ecx,1
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jne @b
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;-------------------------------------------
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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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call palette_put_line
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; red
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ror eax,16
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call next_color
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rol eax,16
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add ecx,1
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cmp ecx,[part_of_size_y]
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jne @b
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;-------------------------------------------
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mov ecx,[part_of_size_y]
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;-------------------------------------------
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align 4
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@@:
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call palette_put_line
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; green
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ror eax,8
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call next_color
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rol eax,8
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sub ecx,1
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jne @b
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;-------------------------------------------
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mov edx,[part_of_size_y]
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lea edx,[edx*3]
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shl edx,1
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mov ecx,[palette_SIZE_Y]
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sub ecx,edx
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test ecx,ecx
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jz .end
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;-------------------------------------------
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align 4
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@@:
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call palette_put_line
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loop @b
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;-------------------------------------------
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align 4
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.end:
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ret
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;---------------------------------------------------------------------
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align 4
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next_color:
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mov ebx,ecx
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imul ebx,edx
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rol ebx,8
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mov al,bl
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ret
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;---------------------------------------------------------------------
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align 4
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palette_put_line:
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push ecx
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mov ecx,[palette_SIZE_X]
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cld
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;-------------------------------------------
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align 4
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.loop:
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stosd
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dec edi
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loop .loop
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pop ecx
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ret
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;---------------------------------------------------------------------
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