WebSVN – Kolibri OS – Diff – /kernel/trunk/video/vesa20.inc



;;                                                              ;;
;;  See file COPYING for details                                ;;
;;                                                              ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

 

$Revision: 5351 $
 
uglobal
align 4

; winmap new line increment
        mov     eax, [_display.width]
        sub     eax, [putimg.real_sx]
        mov     [putimg.winmap_newline], eax
; screen new line increment
        mov     eax, [_display.lfb_pitch]
        mov     ebx, [_display.bytes_per_pixel]
        imul    ecx, ebx
        sub     eax, ecx
        mov     [putimg.screen_newline], eax
; pointer to image

;        imul    eax, [Screen_Max_X]
;        add     eax, [putimg.abs_cy]
        mov     eax, [d_width_calc_area + eax*4]

 
        add     eax, [putimg.abs_cx]
        add     eax, [_display.win_map]

        xchg    eax, ebp
 
        mov     ecx, [putimg.real_sx]

        test    edi, 1          ; force ?
        jnz     .forced

 
; not forced
        mov     edx, [d_width_calc_area + ebx*4]
        add     edx, [_display.win_map]
        movzx   edx, byte [eax+edx]
        cmp     edx, [CURRENT_TASK]

        jne     .exit

; line_inc_scr
        mov     eax, [drbar.real_sx]
        mov     ebx, [_display.bytes_per_pixel]
        imul    eax, ebx
        neg     eax
        add     eax, [_display.lfb_pitch]
        mov     [drbar.line_inc_scr], eax
; pointer to screen
        mov     edx, [drbar.abs_cy]
;        imul    edx, [BytesPerScanLine]
        mov     edx, [BPSLine_calc_area+edx*4]

;        imul    eax, [Screen_Max_X]
;        add     eax, [drbar.abs_cy]
        mov     eax, [d_width_calc_area + eax*4]

 
        add     eax, [drbar.abs_cx]
        add     eax, [_display.win_map]

        xchg    eax, ebp
 
        mov     ebx, [drbar.real_sx]

  @@:
        add     ebp, LFB_BASE
; ebp:=Y*BytesPerScanLine+X*BytesPerPixel+AddrLFB
        call    calculate_edi
        xchg    edi, ebp
        add     ebp, [_display.win_map]
; 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

; precalculated constants:
; qword [esp+28] = 2^32*(BgrDataHeight-1)/(ScreenHeight-1)
; qword [esp+36] = 2^32*(BgrDataWidth-1)/(ScreenWidth-1)

 
  sdp3a:
        mov     eax, [_display.win_map]
        cmp     [ebp+eax], byte 1
        jnz     snbgp
        mov     eax, [bgr_cur_line+esi]
        test    ecx, ecx

        cmp     byte [_display.bytes_per_pixel], 3
        jz      @f
        sub     edi, eax

 
  @@:
        add     edi, [_display.lfb_pitch]
; restore ecx,edx; advance esi to next background line
        mov     eax, [esp+28]
        mov     ebx, [esp+32]
        add     [esp+12], eax

Rev 5350	Rev 5351
Line 15...	Line 15...
15	;; ;;	15	;; ;;
16	;; See file COPYING for details ;;	16	;; See file COPYING for details ;;
17	;; ;;	17	;; ;;
18	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	18	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Line 19...	Line 19...
19		19
Line 20...	Line 20...
20	$Revision: 5350 $	20	$Revision: 5351 $
21		21
22	uglobal	22	uglobal
23	align 4	23	align 4
Line 238...	Line 238...
238	; winmap new line increment	238	; winmap new line increment
239	mov eax, [_display.width]	239	mov eax, [_display.width]
240	sub eax, [putimg.real_sx]	240	sub eax, [putimg.real_sx]
241	mov [putimg.winmap_newline], eax	241	mov [putimg.winmap_newline], eax
242	; screen new line increment	242	; screen new line increment
243	mov eax, [_display.pitch]	243	mov eax, [_display.lfb_pitch]
244	mov ebx, [_display.bytes_per_pixel]	244	mov ebx, [_display.bytes_per_pixel]
245	imul ecx, ebx	245	imul ecx, ebx
246	sub eax, ecx	246	sub eax, ecx
247	mov [putimg.screen_newline], eax	247	mov [putimg.screen_newline], eax
248	; pointer to image	248	; pointer to image
Line 259...	Line 259...
259	; imul eax, [Screen_Max_X]	259	; imul eax, [Screen_Max_X]
260	; add eax, [putimg.abs_cy]	260	; add eax, [putimg.abs_cy]
261	mov eax, [d_width_calc_area + eax*4]	261	mov eax, [d_width_calc_area + eax*4]
Line 262...	Line 262...
262		262
263	add eax, [putimg.abs_cx]	263	add eax, [putimg.abs_cx]
264	add eax, [_WinMapAddress]	264	add eax, [_display.win_map]
Line 265...	Line 265...
265	xchg eax, ebp	265	xchg eax, ebp
266		266
267	mov ecx, [putimg.real_sx]	267	mov ecx, [putimg.real_sx]
Line 882...	Line 882...
882	test edi, 1 ; force ?	882	test edi, 1 ; force ?
883	jnz .forced	883	jnz .forced
Line 884...	Line 884...
884		884
885	; not forced	885	; not forced
886	mov edx, [d_width_calc_area + ebx*4]	886	mov edx, [d_width_calc_area + ebx*4]
887	add edx, [_WinMapAddress]	887	add edx, [_display.win_map]
888	movzx edx, byte [eax+edx]	888	movzx edx, byte [eax+edx]
889	cmp edx, [CURRENT_TASK]	889	cmp edx, [CURRENT_TASK]
Line 890...	Line 890...
890	jne .exit	890	jne .exit
Line 1446...	Line 1446...
1446	; line_inc_scr	1446	; line_inc_scr
1447	mov eax, [drbar.real_sx]	1447	mov eax, [drbar.real_sx]
1448	mov ebx, [_display.bytes_per_pixel]	1448	mov ebx, [_display.bytes_per_pixel]
1449	imul eax, ebx	1449	imul eax, ebx
1450	neg eax	1450	neg eax
1451	add eax, [_display.pitch]	1451	add eax, [_display.lfb_pitch]
1452	mov [drbar.line_inc_scr], eax	1452	mov [drbar.line_inc_scr], eax
1453	; pointer to screen	1453	; pointer to screen
1454	mov edx, [drbar.abs_cy]	1454	mov edx, [drbar.abs_cy]
1455	; imul edx, [BytesPerScanLine]	1455	; imul edx, [BytesPerScanLine]
1456	mov edx, [BPSLine_calc_area+edx*4]	1456	mov edx, [BPSLine_calc_area+edx*4]
Line 1462...	Line 1462...
1462	; imul eax, [Screen_Max_X]	1462	; imul eax, [Screen_Max_X]
1463	; add eax, [drbar.abs_cy]	1463	; add eax, [drbar.abs_cy]
1464	mov eax, [d_width_calc_area + eax*4]	1464	mov eax, [d_width_calc_area + eax*4]
Line 1465...	Line 1465...
1465		1465
1466	add eax, [drbar.abs_cx]	1466	add eax, [drbar.abs_cx]
1467	add eax, [_WinMapAddress]	1467	add eax, [_display.win_map]
Line 1468...	Line 1468...
1468	xchg eax, ebp	1468	xchg eax, ebp
1469		1469
1470	mov ebx, [drbar.real_sx]	1470	mov ebx, [drbar.real_sx]
Line 2032...	Line 2032...
2032	@@:	2032	@@:
2033	add ebp, LFB_BASE	2033	add ebp, LFB_BASE
2034	; ebp:=YBytesPerScanLine+XBytesPerPixel+AddrLFB	2034	; ebp:=YBytesPerScanLine+XBytesPerPixel+AddrLFB
2035	call calculate_edi	2035	call calculate_edi
2036	xchg edi, ebp	2036	xchg edi, ebp
2037	add ebp, [_WinMapAddress]	2037	add ebp, [_display.win_map]
2038	; Now eax=x, ebx=y, edi->output, ebp=offset in WinMapAddress	2038	; Now eax=x, ebx=y, edi->output, ebp=offset in WinMapAddress
2039	; 2) Calculate offset in background memory block	2039	; 2) Calculate offset in background memory block
2040	push eax	2040	push eax
2041	xor edx, edx	2041	xor edx, edx
2042	mov eax, ebx	2042	mov eax, ebx
Line 2254...	Line 2254...
2254	; precalculated constants:	2254	; precalculated constants:
2255	; qword [esp+28] = 2^32*(BgrDataHeight-1)/(ScreenHeight-1)	2255	; qword [esp+28] = 2^32*(BgrDataHeight-1)/(ScreenHeight-1)
2256	; qword [esp+36] = 2^32*(BgrDataWidth-1)/(ScreenWidth-1)	2256	; qword [esp+36] = 2^32*(BgrDataWidth-1)/(ScreenWidth-1)
Line 2257...	Line 2257...
2257		2257
2258	sdp3a:	2258	sdp3a:
2259	mov eax, [_WinMapAddress]	2259	mov eax, [_display.win_map]
2260	cmp [ebp+eax], byte 1	2260	cmp [ebp+eax], byte 1
2261	jnz snbgp	2261	jnz snbgp
2262	mov eax, [bgr_cur_line+esi]	2262	mov eax, [bgr_cur_line+esi]
2263	test ecx, ecx	2263	test ecx, ecx
Line 2330...	Line 2330...
2330	cmp byte [_display.bytes_per_pixel], 3	2330	cmp byte [_display.bytes_per_pixel], 3
2331	jz @f	2331	jz @f
2332	sub edi, eax	2332	sub edi, eax
Line 2333...	Line 2333...
2333		2333
2334	@@:	2334	@@:
2335	add edi, [_display.pitch]	2335	add edi, [_display.lfb_pitch]
2336	; restore ecx,edx; advance esi to next background line	2336	; restore ecx,edx; advance esi to next background line
2337	mov eax, [esp+28]	2337	mov eax, [esp+28]
2338	mov ebx, [esp+32]	2338	mov ebx, [esp+32]
2339	add [esp+12], eax	2339	add [esp+12], eax

Subversion Repositories Kolibri OS

(root)/kernel/trunk/video/vesa20.inc – Rev 5350 → 5351