;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;; VESA20.INC ;;
;; ;;
;; Vesa 2.0 functions for MenuetOS ;;
;; ;;
;; Copyright 2002 Ville Turjanmaa ;;
;; Alexey, kgaz@crosswindws.net ;;
;; - Voodoo compatible graphics ;;
;; Juan M. Caravaca ;;
;; - Graphics optimimizations eg. drawline ;;
;; ;;
;; See file COPYING for details ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$Revision: 1707 $
;*************************************************
; getpixel
;
; in:
; eax = x coordinate
; ebx = y coordinate
;
; ret:
; ecx = 00 RR GG BB
get_pixel:
mov ecx, [BytesPerScanLine]
imul ecx, ebx
lea ecx, [ecx+eax*4] ; ecx = x*4+(y*y multiplier)
mov ecx, [ecx+LFB_BASE]
and ecx, 0xffffff
ret
;*************************************************
virtual at esp
putimg:
.real_sx dd ?
.real_sy dd ?
.image_sx dd ?
.image_sy dd ?
.image_cx dd ?
.image_cy dd ?
.pti dd ?
.abs_cx dd ?
.abs_cy dd ?
.line_increment dd ?
.winmap_newline dd ?
.screen_newline dd ?
.stack_data = 4*12
.edi dd ?
.esi dd ?
.ebp dd ?
.esp dd ?
.ebx dd ?
.edx dd ?
.ecx dd ?
.eax dd ?
.ret_addr dd ?
.arg_0 dd ?
end virtual
align 16
; ebx = pointer
; ecx = size [x|y]
; edx = coordinates [x|y]
; ebp = pointer to 'get' function
; esi = pointer to 'init' function
; edi = parameter for 'get' function
vesa20_putimage:
pushad
call [_display.disable_mouse]
sub esp, putimg.stack_data
; save pointer to image
mov [putimg.pti], ebx
; unpack the size
mov eax, ecx
and ecx, 0xFFFF
shr eax, 16
mov [putimg.image_sx], eax
mov [putimg.image_sy], ecx
; unpack the coordinates
mov eax, edx
and edx, 0xFFFF
shr eax, 16
mov [putimg.image_cx], eax
mov [putimg.image_cy], edx
; calculate absolute (i.e. screen) coordinates
mov eax, [TASK_BASE]
mov ebx, [eax-twdw + WDATA.box.left]
add ebx, [putimg.image_cx]
mov [putimg.abs_cx], ebx
mov ebx, [eax-twdw + WDATA.box.top]
add ebx, [putimg.image_cy]
mov [putimg.abs_cy], ebx
; real_sx = MIN(wnd_sx-image_cx, image_sx);
mov ebx, [eax-twdw + WDATA.box.width] ; ebx = wnd_sx
inc ebx ; WDATA.box.width is one pixel less than real window x-size
sub ebx, [putimg.image_cx]
ja @f
add esp, putimg.stack_data
popad
ret
@@:
cmp ebx, [putimg.image_sx]
jbe .end_x
mov ebx, [putimg.image_sx]
.end_x:
mov [putimg.real_sx], ebx
; init real_sy
mov ebx, [eax-twdw + WDATA.box.height] ; ebx = wnd_sy
inc ebx
sub ebx, [putimg.image_cy]
ja @f
add esp, putimg.stack_data
popad
ret
@@:
cmp ebx, [putimg.image_sy]
jbe .end_y
mov ebx, [putimg.image_sy]
.end_y:
mov [putimg.real_sy], ebx
; line increment
mov eax, [putimg.image_sx]
mov ecx, [putimg.real_sx]
sub eax, ecx
call esi
add eax, [putimg.arg_0]
mov [putimg.line_increment], eax
; winmap new line increment
mov eax, [Screen_Max_X]
inc eax
sub eax, [putimg.real_sx]
mov [putimg.winmap_newline], eax
; screen new line increment
mov eax, [BytesPerScanLine]
shl ecx, 1
shl ecx, 1
sub eax, ecx
mov [putimg.screen_newline], eax
; pointer to image
mov esi, [putimg.pti]
; pointer to screen
mov edx, [putimg.abs_cy]
imul edx, [BytesPerScanLine]
mov eax, [putimg.abs_cx]
shl eax, 1
shl eax, 1
add edx, eax
; pointer to pixel map
mov eax, [putimg.abs_cy]
imul eax, [Screen_Max_X]
add eax, [putimg.abs_cy]
add eax, [putimg.abs_cx]
add eax, [_WinMapAddress]
xchg eax, ebp
; get process number
mov ebx, [CURRENT_TASK]
put_image_end_32:
mov edi, [putimg.real_sy]
align 4
.new_line:
mov ecx, [putimg.real_sx]
align 4
.new_x:
push [putimg.edi]
mov eax, [putimg.ebp+4]
call eax
cmp [ebp], bl
jne .skip
mov [LFB_BASE+edx], eax
.skip:
add edx, 4
inc ebp
dec ecx
jnz .new_x
add esi, [putimg.line_increment]
add edx, [putimg.screen_newline] ;[BytesPerScanLine]
add ebp, [putimg.winmap_newline] ;[Screen_Max_X]
cmp [putimg.ebp], putimage_get1bpp
jz .correct
cmp [putimg.ebp], putimage_get2bpp
jz .correct
cmp [putimg.ebp], putimage_get4bpp
jnz @f
.correct:
mov eax, [putimg.edi]
mov byte [eax], 80h
@@:
dec edi
jnz .new_line
.finish:
add esp, putimg.stack_data
popad
ret
;*************************************************
align 4
__sys_putpixel:
; eax = x coordinate
; ebx = y coordinate
; ecx = ?? RR GG BB ; 0x01000000 negation
; edi = 0x00000001 force
cmp [Screen_Max_X], eax
jb .exit
cmp [Screen_Max_Y], ebx
jb .exit
.check_forced:
test edi,1 ; force ?
jnz .checked
.not_forced:
push edx
mov edx,[_display.width] ; screen x size
imul edx, ebx
add edx, [_WinMapAddress]
movzx edx, byte [eax+edx]
cmp edx, [CURRENT_TASK]
pop edx
jne .exit
; OK to set pixel
.checked:
push ebx
imul ebx, [BytesPerScanLine]
lea ebx, [ebx+eax*4]
test ecx,0x01000000
jz .noneg
mov ecx, [LFB_BASE+ebx]
not ecx
and ecx, 0x01FFFFFF
.noneg:
mov [LFB_BASE+ebx], ecx
pop ebx
.exit:
ret
align 4
put_pixel: ; left for compatibility with Vesa20_putpixel32
; eax = x
; ebx = y
imul ebx, [BytesPerScanLine] ; ebx = y * y multiplier
lea edi, [ebx+eax*4] ; edi = x*4+(y*y multiplier)
mov eax, [esp+32-8+4] ; eax = color
mov [LFB_BASE+edi], eax
ret
;*************************************************
;align 4
calculate_edi:
mov edi, ebx
imul edi, [Screen_Max_X]
add edi, ebx
add edi, eax
ret
;*************************************************
; DRAWLINE
align 4
__sys_draw_line:
; inc [mouse_pause]
call [_display.disable_mouse]
; draw a line
; eax = HIWORD = x1
; LOWORD = x2
; ebx = HIWORD = y1
; LOWORD = y2
; ecx = color
; edi = force ?
pusha
dl_x1 equ esp+20
dl_y1 equ esp+16
dl_x2 equ esp+12
dl_y2 equ esp+8
dl_dx equ esp+4
dl_dy equ esp+0
xor edx, edx ; clear edx
xor esi, esi ; unpack arguments
xor ebp, ebp
mov si, ax ; esi = x2
mov bp, bx ; ebp = y2
shr eax, 16 ; eax = x1
shr ebx, 16 ; ebx = y1
push eax ; save x1
push ebx ; save y1
push esi ; save x2
push ebp ; save y2
; checking x-axis...
sub esi, eax ; esi = x2-x1
push esi ; save y2-y1
jl .x2lx1 ; is x2 less than x1 ?
jg .no_vline ; x1 > x2 ?
mov edx, ebp ; else (if x1=x2)
call vline
push edx ; necessary to rightly restore stack frame at .exit
jmp .exit
.x2lx1:
neg esi ; get esi absolute value
.no_vline:
; checking y-axis...
sub ebp, ebx ; ebp = y2-y1
push ebp ; save y2-y1
jl .y2ly1 ; is y2 less than y1 ?
jg .no_hline ; y1 > y2 ?
mov edx, [dl_x2] ; else (if y1=y2)
call hline
jmp .exit
.y2ly1:
neg ebp ; get ebp absolute value
.no_hline:
cmp ebp, esi
jle .x_rules ; |y2-y1| < |x2-x1| ?
cmp [dl_y2], ebx ; make sure y1 is at the begining
jge .no_reverse1
neg dword [dl_dx]
mov edx, [dl_x2]
mov [dl_x2], eax
mov [dl_x1], edx
mov edx, [dl_y2]
mov [dl_y2], ebx
mov [dl_y1], edx
.no_reverse1:
mov eax, [dl_dx]
cdq ; extend eax sing to edx
shl eax, 16 ; using 16bit fix-point maths
idiv ebp ; eax = ((x2-x1)*65536)/(y2-y1)
mov edx, ebp ; edx = counter (number of pixels to draw)
mov ebp, 1 *65536 ; <<16 ; ebp = dy = 1.0
mov esi, eax ; esi = dx
jmp .y_rules
.x_rules:
cmp [dl_x2], eax ; make sure x1 is at the begining
jge .no_reverse2
neg dword [dl_dy]
mov edx, [dl_x2]
mov [dl_x2], eax
mov [dl_x1], edx
mov edx, [dl_y2]
mov [dl_y2], ebx
mov [dl_y1], edx
.no_reverse2:
xor edx, edx
mov eax, [dl_dy]
cdq ; extend eax sing to edx
shl eax, 16 ; using 16bit fix-point maths
idiv esi ; eax = ((y2-y1)*65536)/(x2-x1)
mov edx, esi ; edx = counter (number of pixels to draw)
mov esi, 1 *65536 ;<< 16 ; esi = dx = 1.0
mov ebp, eax ; ebp = dy
.y_rules:
mov eax, [dl_x1]
mov ebx, [dl_y1]
shl eax, 16
shl ebx, 16
align 4
.draw:
push eax ebx
shr eax, 16
shr ebx, 16
call [putpixel]
pop ebx eax
add ebx, ebp ; y = y+dy
add eax, esi ; x = x+dx
dec edx
jnz .draw
; force last drawn pixel to be at (x2,y2)
mov eax, [dl_x2]
mov ebx, [dl_y2]
call [putpixel]
.exit:
add esp, 6*4
popa
call [draw_pointer]
ret
align 4
hline:
; ------------ draw a horizontal line -------------
; eax = x1
; edx = x2
; ebx = y
; ecx = color
; edi = force ?
cmp ebx, [Screen_Max_Y]
jge .out
push eax ebp esi ebx edx
mov ebp, [_display.width] ; ebp = screen co-ords base
imul ebp, ebx
add ebp, [_WinMapAddress]
cmp edx, eax ; to make sure x2 > x1
jge @f
xchg eax, edx
@@:
cmp eax, [Screen_Max_X]
jge .exit
imul ebx, [BytesPerScanLine]
add ebx, LFB_BASE
cmp edx, [Screen_Max_X] ; last check
jb .draw
mov edx, [Screen_Max_X]
.draw: ; -- the line ---
test edi,1 ; forced ?
jnz .checked
; check whether the line covered by other windows
movzx esi, byte [ebp+eax]
cmp esi, [CURRENT_TASK]
jne .nextpixel
.checked:
test ecx,0x01000000
jz .noneg
mov ecx, [ebx+eax*4]
not ecx
and ecx, 0x01FFFFFF ; keep bit[24] high !
.noneg:
mov [ebx+eax*4], ecx
.nextpixel:
inc eax
cmp eax, edx
jle .draw
.exit:
pop edx ebx esi ebp eax
.out:
ret
align 4
vline:
; --------- draw a vertical line ------------
; eax = x
; ebx = y1
; edx = y2
; ecx = color
; edi = force ?
cmp eax, [Screen_Max_X]
jge .out
push eax ebp esi ebx edx
mov ebp, [_display.width] ; ebp = screen co-ords base
imul ebp, ebx
add ebp, [_WinMapAddress]
add ebp, eax
cmp edx, ebx ; to make sure y2 > y1
jge @f
xchg ebx, edx
@@:
cmp ebx, [Screen_Max_Y]
jge .exit
push ebx
imul ebx, [BytesPerScanLine]
shl eax, 1
shl eax, 1
add eax, ebx
add eax, LFB_BASE
pop ebx ; restore ebx = y1
cmp edx, [Screen_Max_Y] ; the last check
jb .draw
mov edx, [Screen_Max_Y] ; to prevent off-screen drawing
.draw: ; (vertical line itself)
test edi,1 ; forced ?
jnz .checked
; check whether the line covered by other windows
movzx esi, byte [ebp]
cmp esi, [CURRENT_TASK]
jne .nextpixel
.checked:
test ecx,0x01000000
jz .noneg
mov ecx, [eax]
not ecx
and ecx, 0x01FFFFFF ; keep bit[24] high !
.noneg:
mov [eax], ecx
.nextpixel:
add eax, [BytesPerScanLine]
add ebp, [_display.width]
inc ebx
cmp ebx, edx
jle .draw
.exit:
pop edx ebx esi ebp eax
.out:
ret
;*************************************************
virtual at esp
drbar:
.bar_sx dd ?
.bar_sy dd ?
.bar_cx dd ?
.bar_cy dd ?
.abs_cx dd ?
.abs_cy dd ?
.real_sx dd ?
.real_sy dd ?
.color dd ?
.line_inc_scr dd ?
.line_inc_map dd ?
.stack_data = 4*11
end virtual
align 4
; eax cx
; ebx cy
; ecx xe
; edx ye
; edi color
vesa20_drawbar:
pushad
call [_display.disable_mouse]
sub esp, drbar.stack_data
mov [drbar.color], edi
sub edx, ebx
jle .exit
sub ecx, eax
jle .exit
mov [drbar.bar_sy], edx
mov [drbar.bar_sx], ecx
mov [drbar.bar_cx], eax
mov [drbar.bar_cy], ebx
mov edi, [TASK_BASE]
add eax, [edi-twdw + WDATA.box.left] ; win_cx
add ebx, [edi-twdw + WDATA.box.top] ; win_cy
mov [drbar.abs_cx], eax
mov [drbar.abs_cy], ebx
; real_sx = MIN(wnd_sx-bar_cx, bar_sx);
mov ebx, [edi-twdw + WDATA.box.width] ; ebx = wnd_sx
; note that WDATA.box.width is one pixel less than real window x-size
inc ebx
sub ebx, [drbar.bar_cx]
ja @f
.exit:
add esp, drbar.stack_data
popad
xor eax, eax
inc eax
ret
@@:
cmp ebx, [drbar.bar_sx]
jbe .end_x
mov ebx, [drbar.bar_sx]
.end_x:
mov [drbar.real_sx], ebx
; real_sy = MIN(wnd_sy-bar_cy, bar_sy);
mov ebx, [edi-twdw + WDATA.box.height] ; ebx = wnd_sy
inc ebx
sub ebx, [drbar.bar_cy]
ja @f
add esp, drbar.stack_data
popad
xor eax, eax
inc eax
ret
@@:
cmp ebx, [drbar.bar_sy]
jbe .end_y
mov ebx, [drbar.bar_sy]
.end_y:
mov [drbar.real_sy], ebx
; line_inc_map
mov eax, [Screen_Max_X]
sub eax, [drbar.real_sx]
inc eax
mov [drbar.line_inc_map], eax
; line_inc_scr
mov eax, [drbar.real_sx]
shl eax, 1
shl eax, 1
neg eax
add eax, [BytesPerScanLine]
mov [drbar.line_inc_scr], eax
; pointer to screen
mov edx, [drbar.abs_cy]
imul edx, [BytesPerScanLine]
mov eax, [drbar.abs_cx]
shl eax, 1
shl eax, 1
add edx, eax
; pointer to pixel map
mov eax, [drbar.abs_cy]
imul eax, [Screen_Max_X]
add eax, [drbar.abs_cy]
add eax, [drbar.abs_cx]
add eax, [_WinMapAddress]
xchg eax, ebp
; get process number
mov ebx, [CURRENT_TASK]
draw_bar_end_32:
; eax - color high RRGG
; bl - process num
; bh - color low BB
; ecx - temp
; edx - pointer to screen
; esi - counter
; edi - counter
mov eax, [drbar.color] ;; BBGGRR00
mov esi, [drbar.real_sy]
align 4
.new_y:
mov edi, [drbar.real_sx]
align 4
.new_x:
cmp byte [ebp], bl
jne .skip
mov [LFB_BASE+edx], eax
.skip:
; add pixel
add edx, 4
inc ebp
dec edi
jnz .new_x
; add line
add edx, [drbar.line_inc_scr]
add ebp, [drbar.line_inc_map]
; <Ivan 15.10.04> drawing gradient bars
test eax, 0x80000000
jz @f
test al, al
jz @f
dec al
@@:
; </Ivan 15.10.04>
dec esi
jnz .new_y
add esp, drbar.stack_data
popad
xor eax, eax
ret
align 4
vesa20_drawbackground_tiled:
call [_display.disable_mouse]
pushad
; External loop for all y from start to end
mov ebx, [draw_data+32+RECT.top] ; y start
dp2:
mov ebp, [draw_data+32+RECT.left] ; x start
; 1) Calculate pointers in WinMapAddress (does pixel belong to OS thread?) [ebp]
; and LFB data (output for our function) [edi]
mov eax, [BytesPerScanLine]
mul ebx
xchg ebp, eax
add ebp, eax
add ebp, eax
add ebp, eax
add ebp, eax
add ebp, LFB_BASE
; ebp:=Y*BytesPerScanLine+X*BytesPerPixel+AddrLFB
call calculate_edi
xchg edi, ebp
add ebp, [_WinMapAddress]
; Now eax=x, ebx=y, edi->output, ebp=offset in WinMapAddress
; 2) Calculate offset in background memory block
push eax
xor edx, edx
mov eax, ebx
div dword [BgrDataHeight] ; edx := y mod BgrDataHeight
pop eax
push eax
mov ecx, [BgrDataWidth]
mov esi, edx
imul esi, ecx ; esi := (y mod BgrDataHeight) * BgrDataWidth
xor edx, edx
div ecx ; edx := x mod BgrDataWidth
sub ecx, edx
add esi, edx ; esi := (y mod BgrDataHeight)*BgrDataWidth + (x mod BgrDataWidth)
pop eax
lea esi, [esi*3]
add esi, [img_background]
xor edx, edx
inc edx
; 3) Loop through redraw rectangle and copy background data
; Registers meaning:
; eax = x, ebx = y (screen coordinates)
; ecx = deltax - number of pixels left in current tile block
; edx = 1
; esi -> bgr memory, edi -> output
; ebp = offset in WinMapAddress
dp3:
cmp [ebp], dl
jnz nbgp
movsb
movsb
movsb
jmp @f
nbgp:
add esi, 3
add edi, 3
@@:
inc edi ; +1 for 32 bpp
add ebp, edx
add eax, edx
cmp eax, [draw_data+32+RECT.right]
ja dp4
sub ecx, edx
jnz dp3
; next tile block on x-axis
mov ecx, [BgrDataWidth]
sub esi, ecx
sub esi, ecx
sub esi, ecx
jmp dp3
dp4:
; next scan line
inc ebx
cmp ebx, [draw_data+32+RECT.bottom]
jbe dp2
popad
ret
; ----------
vesa20_drawbackground_stretch:
call [_display.disable_mouse]
pushad
; Helper variables
; calculate 2^32*(BgrDataWidth-1) mod (ScreenWidth-1)
mov eax, [BgrDataWidth]
dec eax
xor edx, edx
div dword [Screen_Max_X]
push eax ; high
xor eax, eax
div dword [Screen_Max_X]
push eax ; low
; the same for height
mov eax, [BgrDataHeight]
dec eax
xor edx, edx
div dword [Screen_Max_Y]
push eax ; high
xor eax, eax
div dword [Screen_Max_Y]
push eax ; low
; External loop for all y from start to end
mov ebx, [draw_data+32+RECT.top] ; y start
mov ebp, [draw_data+32+RECT.left] ; x start
; 1) Calculate pointers in WinMapAddress (does pixel belong to OS thread?) [ebp]
; and LFB data (output for our function) [edi]
mov eax, [BytesPerScanLine]
mul ebx
xchg ebp, eax
add ebp, eax
add ebp, eax
add ebp, eax
add ebp, eax
; ebp:=Y*BytesPerScanLine+X*BytesPerPixel+AddrLFB
call calculate_edi
xchg edi, ebp
; Now eax=x, ebx=y, edi->output, ebp=offset in WinMapAddress
push ebx
push eax
; 2) Calculate offset in background memory block
mov eax, ebx
imul ebx, dword [esp+12]
mul dword [esp+8]
add edx, ebx ; edx:eax = y * 2^32*(BgrDataHeight-1)/(ScreenHeight-1)
mov esi, edx
imul esi, [BgrDataWidth]
push edx
push eax
mov eax, [esp+8]
mul dword [esp+28]
push eax
mov eax, [esp+12]
mul dword [esp+28]
add [esp], edx
pop edx ; edx:eax = x * 2^32*(BgrDataWidth-1)/(ScreenWidth-1)
add esi, edx
lea esi, [esi*3]
add esi, [img_background]
push eax
push edx
push esi
; 3) Smooth horizontal
bgr_resmooth0:
mov ecx, [esp+8]
mov edx, [esp+4]
mov esi, [esp]
push edi
mov edi, bgr_cur_line
call smooth_line
bgr_resmooth1:
mov eax, [esp+16+4]
inc eax
cmp eax, [BgrDataHeight]
jae bgr.no2nd
mov ecx, [esp+8+4]
mov edx, [esp+4+4]
mov esi, [esp+4]
add esi, [BgrDataWidth]
add esi, [BgrDataWidth]
add esi, [BgrDataWidth]
mov edi, bgr_next_line
call smooth_line
bgr.no2nd:
pop edi
sdp3:
xor esi, esi
mov ecx, [esp+12]
; 4) Loop through redraw rectangle and copy background data
; Registers meaning:
; esi = offset in current line, edi -> output
; ebp = offset in WinMapAddress
; dword [esp] = offset in bgr data
; qword [esp+4] = x * 2^32 * (BgrDataWidth-1) / (ScreenWidth-1)
; qword [esp+12] = y * 2^32 * (BgrDataHeight-1) / (ScreenHeight-1)
; dword [esp+20] = x
; dword [esp+24] = y
; precalculated constants:
; qword [esp+28] = 2^32*(BgrDataHeight-1)/(ScreenHeight-1)
; qword [esp+36] = 2^32*(BgrDataWidth-1)/(ScreenWidth-1)
sdp3a:
mov eax, [_WinMapAddress]
cmp [ebp+eax], byte 1
jnz snbgp
mov eax, [bgr_cur_line+esi]
test ecx, ecx
jz .novert
mov ebx, [bgr_next_line+esi]
call [overlapping_of_points_ptr]
.novert:
mov [LFB_BASE+edi], ax
shr eax, 16
mov [LFB_BASE+edi+2], al
snbgp:
add edi, 4
inc ebp
mov eax, [esp+20]
inc eax
mov [esp+20], eax
add esi, 4
cmp eax, [draw_data+32+RECT.right]
jbe sdp3a
sdp4:
; next y
mov ebx, [esp+24]
inc ebx
mov [esp+24], ebx
cmp ebx, [draw_data+32+RECT.bottom]
ja sdpdone
; advance edi, ebp to next scan line
sub eax, [draw_data+32+RECT.left]
sub ebp, eax
add ebp, [Screen_Max_X]
inc ebp
sub edi, eax
sub edi, eax
sub edi, eax
sub edi, eax
add edi, [BytesPerScanLine]
; restore ecx,edx; advance esi to next background line
mov eax, [esp+28]
mov ebx, [esp+32]
add [esp+12], eax
mov eax, [esp+16]
adc [esp+16], ebx
sub eax, [esp+16]
mov ebx, eax
lea eax, [eax*3]
imul eax, [BgrDataWidth]
sub [esp], eax
mov eax, [draw_data+32+RECT.left]
mov [esp+20], eax
test ebx, ebx
jz sdp3
cmp ebx, -1
jnz bgr_resmooth0
push edi
mov esi, bgr_next_line
mov edi, bgr_cur_line
mov ecx, [Screen_Max_X]
inc ecx
rep movsd
jmp bgr_resmooth1
sdpdone:
add esp, 44
popad
ret
uglobal
align 4
bgr_cur_line rd 1920 ; maximum width of screen
bgr_next_line rd 1920
endg
smooth_line:
mov al, [esi+2]
shl eax, 16
mov ax, [esi]
test ecx, ecx
jz @f
mov ebx, [esi+2]
shr ebx, 8
call [overlapping_of_points_ptr]
@@:
stosd
mov eax, [esp+20+8]
inc eax
mov [esp+20+8], eax
cmp eax, [draw_data+32+RECT.right]
ja @f
add ecx, [esp+36+8]
mov eax, edx
adc edx, [esp+40+8]
sub eax, edx
lea eax, [eax*3]
sub esi, eax
jmp smooth_line
@@:
mov eax, [draw_data+32+RECT.left]
mov [esp+20+8], eax
ret
align 16
overlapping_of_points:
push ecx edx
mov edx, eax
push esi
shr ecx, 26
mov esi, ecx
mov ecx, ebx
shl esi, 9
movzx ebx, dl
movzx eax, cl
sub eax, ebx
movzx ebx, dh
add dl, [BgrAuxTable+(eax+0x100)+esi]
movzx eax, ch
sub eax, ebx
add dh, [BgrAuxTable+(eax+0x100)+esi]
ror ecx, 16
ror edx, 16
movzx eax, cl
movzx ebx, dl
sub eax, ebx
add dl, [BgrAuxTable+(eax+0x100)+esi]
pop esi
mov eax, edx
pop edx
ror eax, 16
pop ecx
ret
iglobal
align 4
overlapping_of_points_ptr dd overlapping_of_points
endg
init_background:
mov edi, BgrAuxTable
xor edx, edx
.loop2:
mov eax, edx
shl eax, 8
neg eax
mov ecx, 0x200
.loop1:
mov byte [edi], ah
inc edi
add eax, edx
loop .loop1
add dl, 4
jnz .loop2
test byte [cpu_caps+(CAPS_MMX/8)], 1 shl (CAPS_MMX mod 8)
jz @f
mov [overlapping_of_points_ptr], overlapping_of_points_mmx
@@:
ret
align 16
overlapping_of_points_mmx:
movd mm0, eax
movd mm4, eax
movd mm1, ebx
pxor mm2, mm2
punpcklbw mm0, mm2
punpcklbw mm1, mm2
psubw mm1, mm0
movd mm3, ecx
psrld mm3, 24
packuswb mm3, mm3
packuswb mm3, mm3
pmullw mm1, mm3
psrlw mm1, 8
packuswb mm1, mm2
paddb mm4, mm1
movd eax, mm4
ret