hline/vline coolhack a-la Serge
git-svn-id: svn://kolibrios.org@1708 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Artem Jerdev (art_zh)
parent
1feef39077
commit
c910c0615f
@ -256,8 +256,8 @@ put_pixel: ; left for compatibility with Vesa20_putpixel32
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; ebx = y
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imul ebx, [BytesPerScanLine] ; ebx = y * y multiplier
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lea edi, [ebx+eax*4] ; edi = x*4+(y*y multiplier)
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mov eax, [esp+32-8+4] ; eax = color
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mov [LFB_BASE+edi], eax
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; mov eax, [esp+32-8+4] ; eax = color
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mov [LFB_BASE+edi], ecx
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ret
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@ -277,7 +277,6 @@ calculate_edi:
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align 4
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__sys_draw_line:
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; inc [mouse_pause]
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call [_display.disable_mouse]
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; draw a line
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@ -306,6 +305,7 @@ dl_dy equ esp+0
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push eax ; save x1
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push ebx ; save y1
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push esi ; save x2
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push ebp ; save y2
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; checking x-axis...
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sub esi, eax ; esi = x2-x1
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@ -408,6 +408,9 @@ hline:
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cmp ebx, [Screen_Max_Y]
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jge .out
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push eax ebp esi ebx edx
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bt ecx, 24 ; color inversion check
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rcl edi,1 ; forced graphics check
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mov ebp, [_display.width] ; ebp = screen co-ords base
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imul ebp, ebx
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add ebp, [_WinMapAddress]
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@ -425,28 +428,46 @@ hline:
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mov edx, [Screen_Max_X]
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.draw: ; -- the line ---
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test edi,1 ; forced ?
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jnz .checked
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; check whether the line covered by other windows
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movzx esi, byte [ebp+eax]
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cmp esi, [CURRENT_TASK]
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jne .nextpixel
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.checked:
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test ecx,0x01000000
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jz .noneg
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jmp dword [hline.drawtable + edi*4] ; a coolhack (C) Serge
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align 4
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.invert_color:
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mov ecx, [ebx+eax*4]
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not ecx
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and ecx, 0x01FFFFFF ; keep bit[24] high !
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.noneg:
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xor ecx, 0x00FFFFFF
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or ecx, 0x01000000 ; keep bit[24] high !
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align 4
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.check_overlap:
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movzx esi, byte [ebp+eax] ; check whether the line covered by other windows
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cmp esi, [CURRENT_TASK]
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je .putpixel
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jmp .nextpixel
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align 4
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.invert_force:
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mov ecx, [ebx+eax*4]
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xor ecx, 0x00FFFFFF
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or ecx, 0x01000000 ; keep bit[24] high !
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align 4
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.putpixel:
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mov [ebx+eax*4], ecx
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align 4
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.nextpixel:
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inc eax
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cmp eax, edx
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jle .draw
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ja .exit
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jmp dword [hline.drawtable + edi*4] ; close the loop
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.exit:
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shr edi, 1 ; restore the 'force' bit
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pop edx ebx esi ebp eax
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.out:
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ret
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align 4
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.drawtable:
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dd .check_overlap ; general case
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dd .invert_color
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dd .putpixel ; force to draw it
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dd .invert_force
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align 4
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vline:
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@ -481,31 +502,47 @@ vline:
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jb .draw
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mov edx, [Screen_Max_Y] ; to prevent off-screen drawing
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.draw: ; (vertical line itself)
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test edi,1 ; forced ?
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jnz .checked
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; check whether the line covered by other windows
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.draw:
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jmp dword [vline.drawtable + edi*4]
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align 4
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.invert_color:
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mov ecx, [eax]
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xor ecx, 0x00FFFFFF
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or ecx, 0x01000000
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align 4
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.check_overlap:
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movzx esi, byte [ebp]
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cmp esi, [CURRENT_TASK]
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jne .nextpixel
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.checked:
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test ecx,0x01000000
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jz .noneg
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je .putpixel
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jmp .nextpixel
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align 4
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.invert_force:
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mov ecx, [eax]
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not ecx
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and ecx, 0x01FFFFFF ; keep bit[24] high !
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.noneg:
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xor ecx, 0x00FFFFFF
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or ecx, 0x01000000
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align 4
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.putpixel:
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mov [eax], ecx
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align 4
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.nextpixel:
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add eax, [BytesPerScanLine]
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add ebp, [_display.width]
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inc ebx
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cmp ebx, edx
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jle .draw
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ja .exit
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jmp dword [vline.drawtable + edi*4]
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.exit:
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shr edi, 1
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pop edx ebx esi ebp eax
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.out:
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ret
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align 4
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.drawtable:
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dd .check_overlap ; general case
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dd .invert_color
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dd .putpixel ; force to draw it
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dd .invert_force
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;*************************************************
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@ -1005,20 +1042,23 @@ init_background:
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align 16
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overlapping_of_points_mmx:
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movd mm0, eax
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movd mm4, eax
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movd mm1, ebx
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pxor mm2, mm2
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punpcklbw mm0, mm2
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punpcklbw mm1, mm2
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psubw mm1, mm0
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movd mm3, ecx
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psrld mm3, 24
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packuswb mm3, mm3
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packuswb mm3, mm3
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pmullw mm1, mm3
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psrlw mm1, 8
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packuswb mm1, mm2
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paddb mm4, mm1
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movd eax, mm4
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ret
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movd mm0, eax
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movd mm4, eax
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movd mm1, ebx
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pxor mm2, mm2
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punpcklbw mm0, mm2
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punpcklbw mm1, mm2
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psubw mm1, mm0
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movd mm3, ecx
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psrld mm3, 24
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packuswb mm3, mm3
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packuswb mm3, mm3
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pmullw mm1, mm3
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psrlw mm1, 8
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packuswb mm1, mm2
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paddb mm4, mm1
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movd eax, mm4
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ret
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diff16 "VESA2 code end ",0,$
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diff16 "VESA2 code size",get_pixel,$
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