;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; Copyright (C) KolibriOS team 2004-2015. 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 ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; $Revision$ uglobal align 4 bgr_cur_line rd 1920 ; maximum width of screen bgr_next_line rd 1920 endg iglobal align 4 overlapping_of_points_ptr dd overlapping_of_points endg ;----------------------------------------------------------------------------- ; eax = x ; ebx = y align 4 Vesa20_getpixel16: ; check for hardware cursor cmp [_display.select_cursor], select_cursor je @f cmp [_display.select_cursor], 0 jne .no_mouseunder @@: ; check mouse area for putpixel test ecx, 0x04000000 ; don't load to mouseunder area jnz .no_mouseunder call [_display.check_m_pixel] test ecx, ecx ; 0xff000000 jnz @f .no_mouseunder: ; imul ebx, [BytesPerScanLine] ; ebx = y * y multiplier mov ebx, [BPSLine_calc_area+ebx*4] lea edi, [eax*2] ; edi = x*2 add edi, ebx ; edi = x*2+(y*y multiplier) movzx ecx, word[LFB_BASE+edi] shl ecx, 3 ror ecx, 8 shl cx, 2 ror ecx, 8 shl cl, 3 rol ecx, 16 @@: and ecx, 0x00ffffff ret ;----------------------------------------------------------------------------- ; eax = x ; ebx = y align 4 Vesa20_getpixel24: ; check for hardware cursor cmp [_display.select_cursor], select_cursor je @f cmp [_display.select_cursor], 0 jne .no_mouseunder @@: ; check mouse area for putpixel test ecx, 0x04000000 ; don't load to mouseunder area jnz .no_mouseunder call [_display.check_m_pixel] test ecx, ecx ; 0xff000000 jnz @f .no_mouseunder: ; imul ebx, [BytesPerScanLine] ; ebx = y * y multiplier mov ebx, [BPSLine_calc_area+ebx*4] lea edi, [eax+eax*2] ; edi = x*3 add edi, ebx ; edi = x*3+(y*y multiplier) mov ecx, [LFB_BASE+edi] @@: and ecx, 0x00ffffff ret ;----------------------------------------------------------------------------- ; eax = x ; ebx = y align 4 Vesa20_getpixel32: ; check for hardware cursor cmp [_display.select_cursor], select_cursor je @f cmp [_display.select_cursor], 0 jne .no_mouseunder @@: ; check mouse area for putpixel test ecx, 0x04000000 ; don't load to mouseunder area jnz .no_mouseunder call [_display.check_m_pixel] test ecx, ecx ; 0xff000000 jnz @f .no_mouseunder: ; imul ebx, [BytesPerScanLine] ; ebx = y * y multiplier mov ebx, [BPSLine_calc_area+ebx*4] lea edi, [ebx+eax*4] ; edi = x*4+(y*y multiplier) mov ecx, [LFB_BASE+edi] @@: and ecx, 0x00ffffff ret ;----------------------------------------------------------------------------- ; 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 align 16 vesa20_putimage: 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 ? .real_sx_and_abs_cx dd ? .real_sy_and_abs_cy dd ? .stack_data = 4*14 .edi dd ? .esi dd ? .ebp dd ? .esp dd ? .ebx dd ? .edx dd ? .ecx dd ? .eax dd ? .ret_addr dd ? .arg_0 dd ? end virtual pushad 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 ;; imul eax, [putimg.source_bpp] ; lea eax, [eax + eax * 2] call esi add eax, [putimg.arg_0] mov [putimg.line_increment], eax ; 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 mov esi, [putimg.pti] ; pointer to screen mov edx, [putimg.abs_cy] ; imul edx, [BytesPerScanLine] mov edx, [BPSLine_calc_area+edx*4] mov eax, [putimg.abs_cx] imul eax, ebx add edx, eax ; pointer to pixel map mov eax, [putimg.abs_cy] ; 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] add ecx, [putimg.abs_cx] mov [putimg.real_sx_and_abs_cx], ecx mov ecx, [putimg.real_sy] add ecx, [putimg.abs_cy] mov [putimg.real_sy_and_abs_cy], ecx ; get process number mov ebx, [CURRENT_TASK] cmp byte [_display.bits_per_pixel], 16 je put_image_end_16 cmp byte [_display.bits_per_pixel], 24 je put_image_end_24 cmp byte [_display.bits_per_pixel], 32 je put_image_end_32 ;------------------------------------------------------------------------------ put_image_end_16: mov edi, [putimg.real_sy] ; check for hardware cursor mov ecx, [_display.select_cursor] cmp ecx, select_cursor je put_image_end_16_new cmp ecx, 0 je put_image_end_16_old .new_line: mov ecx, [putimg.real_sx] .new_x: push [putimg.edi] mov eax, [putimg.ebp+4] call eax cmp [ebp], bl jne .skip ; convert to 16 bpp and store to LFB and eax, 00000000111110001111110011111000b shr ah, 2 shr ax, 3 ror eax, 8 add al, ah rol eax, 8 mov [LFB_BASE+edx], ax .skip: add edx, 2 inc ebp dec ecx jnz .new_x add esi, [putimg.line_increment] add edx, [putimg.screen_newline] add ebp, [putimg.winmap_newline] 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 put_image_end_16_old: .new_line: mov ecx, [putimg.real_sx] .new_x: push [putimg.edi] mov eax, [putimg.ebp+4] call eax cmp [ebp], bl jne .skip push ecx neg ecx add ecx, [putimg.real_sx_and_abs_cx + 4] shl ecx, 16 add ecx, [putimg.real_sy_and_abs_cy + 4] sub ecx, edi ; check mouse area for putpixel call check_mouse_area_for_putpixel pop ecx ; convert to 16 bpp and store to LFB ;; and eax, 00000000111110001111110011111000b ;; shr ah, 2 ;; shr ax, 3 ;; ror eax, 8 ;; add al, ah ;; rol eax, 8 mov [LFB_BASE+edx], ax .skip: inc edx inc edx inc ebp dec ecx jnz .new_x add esi, [putimg.line_increment] add edx, [putimg.screen_newline] add ebp, [putimg.winmap_newline] 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 jmp put_image_end_16.finish ;------------------------------------------------------------------------------ align 4 put_image_end_16_new: .new_line: mov ecx, [putimg.real_sx] .new_x: push [putimg.edi] mov eax, [putimg.ebp+4] call eax cmp [ebp], bl jne .skip push ecx .sh: neg ecx add ecx, [putimg.real_sx_and_abs_cx + 4] ; check for X cmp cx, [X_UNDER_sub_CUR_hot_x_add_curh] jae .no_mouse_area sub cx, [X_UNDER_subtraction_CUR_hot_x] jb .no_mouse_area shl ecx, 16 add ecx, [putimg.real_sy_and_abs_cy + 4] sub ecx, edi ; check for Y cmp cx, [Y_UNDER_sub_CUR_hot_y_add_curh] jae .no_mouse_area sub cx, [Y_UNDER_subtraction_CUR_hot_y] jb .no_mouse_area ; check mouse area for putpixel call check_mouse_area_for_putpixel_new.1 cmp ecx, -1 ; SHIT HAPPENS? jne .no_mouse_area mov ecx, [esp] jmp .sh .no_mouse_area: pop ecx ; convert to 16 bpp and store to LFB and eax, 00000000111110001111110011111000b shr ah, 2 shr ax, 3 ror eax, 8 add al, ah rol eax, 8 mov [LFB_BASE+edx], ax .skip: add edx, 2 inc ebp dec ecx jnz .new_x add esi, [putimg.line_increment] add edx, [putimg.screen_newline] add ebp, [putimg.winmap_newline] 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 jmp put_image_end_16.finish ;------------------------------------------------------------------------------ align 4 put_image_end_24: mov edi, [putimg.real_sy] ; check for hardware cursor mov ecx, [_display.select_cursor] cmp ecx, select_cursor je put_image_end_24_new cmp ecx, 0 je put_image_end_24_old .new_line: mov ecx, [putimg.real_sx] .new_x: push [putimg.edi] mov eax, [putimg.ebp+4] call eax cmp [ebp], bl jne .skip ; store to LFB mov [LFB_BASE+edx], ax shr eax, 16 mov [LFB_BASE+edx+2], al .skip: add edx, 3 inc ebp dec ecx jnz .new_x add esi, [putimg.line_increment] add edx, [putimg.screen_newline] add ebp, [putimg.winmap_newline] 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 put_image_end_24_old: .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 push ecx neg ecx add ecx, [putimg.real_sx_and_abs_cx + 4] shl ecx, 16 add ecx, [putimg.real_sy_and_abs_cy + 4] sub ecx, edi ; check mouse area for putpixel call check_mouse_area_for_putpixel pop ecx ; store to LFB mov [LFB_BASE+edx], ax shr eax, 16 mov [LFB_BASE+edx+2], al .skip: add edx, 3 inc ebp dec ecx jnz .new_x add esi, [putimg.line_increment] add edx, [putimg.screen_newline] add ebp, [putimg.winmap_newline] 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 jmp put_image_end_24.finish ;------------------------------------------------------------------------------ align 4 put_image_end_24_new: .new_line: mov ecx, [putimg.real_sx] .new_x: push [putimg.edi] mov eax, [putimg.ebp+4] call eax cmp [ebp], bl jne .skip push ecx .sh: neg ecx add ecx, [putimg.real_sx_and_abs_cx + 4] ; check for X cmp cx, [X_UNDER_sub_CUR_hot_x_add_curh] jae .no_mouse_area sub cx, [X_UNDER_subtraction_CUR_hot_x] jb .no_mouse_area shl ecx, 16 add ecx, [putimg.real_sy_and_abs_cy + 4] sub ecx, edi ; check for Y cmp cx, [Y_UNDER_sub_CUR_hot_y_add_curh] jae .no_mouse_area sub cx, [Y_UNDER_subtraction_CUR_hot_y] jb .no_mouse_area ; check mouse area for putpixel call check_mouse_area_for_putpixel_new.1 cmp ecx, -1 ; SHIT HAPPENS? jne .no_mouse_area mov ecx, [esp] jmp .sh .no_mouse_area: pop ecx ; store to LFB mov [LFB_BASE+edx], ax shr eax, 16 mov [LFB_BASE+edx+2], al .skip: add edx, 3 inc ebp dec ecx jnz .new_x add esi, [putimg.line_increment] add edx, [putimg.screen_newline] add ebp, [putimg.winmap_newline] 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 jmp put_image_end_24.finish ;------------------------------------------------------------------------------ align 4 put_image_end_32: mov edi, [putimg.real_sy] ; check for hardware cursor mov ecx, [_display.select_cursor] cmp ecx, select_cursor je put_image_end_32_new cmp ecx, 0 je put_image_end_32_old .new_line: mov ecx, [putimg.real_sx] .new_x: push [putimg.edi] mov eax, [putimg.ebp+4] call eax cmp [ebp], bl jne .skip ; store to LFB 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] add ebp, [putimg.winmap_newline] 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 cmp [SCR_MODE], 0x12 jne @f call VGA__putimage @@: mov [EGA_counter], 1 ret ;------------------------------------------------------------------------------ align 4 put_image_end_32_old: .new_line: mov ecx, [putimg.real_sx] .new_x: push [putimg.edi] mov eax, [putimg.ebp+4] call eax cmp [ebp], bl jne .skip push ecx neg ecx add ecx, [putimg.real_sx_and_abs_cx + 4] shl ecx, 16 add ecx, [putimg.real_sy_and_abs_cy + 4] sub ecx, edi ; check mouse area for putpixel call check_mouse_area_for_putpixel pop ecx ; store to LFB 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] add ebp, [putimg.winmap_newline] 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 jmp put_image_end_32.finish ;------------------------------------------------------------------------------ align 4 put_image_end_32_new: .new_line: mov ecx, [putimg.real_sx] .new_x: push [putimg.edi] mov eax, [putimg.ebp+4] call eax cmp [ebp], bl jne .skip push ecx .sh: neg ecx add ecx, [putimg.real_sx_and_abs_cx + 4] ; check for X cmp cx, [X_UNDER_sub_CUR_hot_x_add_curh] jae .no_mouse_area sub cx, [X_UNDER_subtraction_CUR_hot_x] jb .no_mouse_area shl ecx, 16 add ecx, [putimg.real_sy_and_abs_cy + 4] sub ecx, edi ; check for Y cmp cx, [Y_UNDER_sub_CUR_hot_y_add_curh] jae .no_mouse_area sub cx, [Y_UNDER_subtraction_CUR_hot_y] jb .no_mouse_area ; check mouse area for putpixel call check_mouse_area_for_putpixel_new.1 cmp ecx, -1 ; SHIT HAPPENS? jne .no_mouse_area mov ecx, [esp] jmp .sh .no_mouse_area: pop ecx ; store to LFB 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] add ebp, [putimg.winmap_newline] 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 jmp put_image_end_32.finish ;------------------------------------------------------------------------------ ; eax = x coordinate ; ebx = y coordinate ; ecx = xx RR GG BB ; xx flags: ; 0x01000000 color inversion ; 0x02000000 used for draw_rectangle without top line (for drawwindow_III and drawwindow_IV) ; edi = 0x00000001 force align 4 __sys_putpixel: pushad cmp eax, [_display.width] jge .exit cmp ebx, [_display.height] jge .exit 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 .forced: ; check for color inversion test ecx, 0x01000000 jz .no_inv push eax ebx edx edi call [GETPIXEL] pop edi edx ebx eax not ecx rol ecx, 8 mov cl, [esp+32-8+3] ror ecx, 8 mov [esp+32-8], ecx .no_inv: call [PUTPIXEL] ; call the real put_pixel function .exit: popad ret ;----------------------------------------------------------------------------- ; eax = x ; ebx = y align 4 Vesa20_putpixel16: mov ecx, eax shl ecx, 16 mov cx, bx ; imul ebx, [BytesPerScanLine] ; ebx = y * y multiplier mov ebx, [BPSLine_calc_area+ebx*4] lea edi, [eax*2]; edi = x*2 mov eax, [esp+32-8+4] ; check for hardware cursor cmp [_display.select_cursor], 0 jne @f ; check mouse area for putpixel test eax, 0x04000000 jnz @f call check_mouse_area_for_putpixel @@: ; store to LFB and eax, 00000000111110001111110011111000b shr ah, 2 shr ax, 3 ror eax, 8 add al, ah rol eax, 8 mov [LFB_BASE+ebx+edi], ax ret ;----------------------------------------------------------------------------- ; eax = x ; ebx = y align 4 Vesa20_putpixel16_new: mov ecx, eax shl ecx, 16 mov cx, bx ; imul ebx, [BytesPerScanLine] ; ebx = y * y multiplier mov ebx, [BPSLine_calc_area+ebx*4] lea edi, [eax*2]; edi = x*2 mov eax, [esp+32-8+4] ; check for hardware cursor cmp [_display.select_cursor], select_cursor jne @f ; check mouse area for putpixel test eax, 0x04000000 jnz @f ; check for Y cmp cx, [Y_UNDER_sub_CUR_hot_y_add_curh] jae @f sub cx, [Y_UNDER_subtraction_CUR_hot_y] jb @f rol ecx, 16 ; check for X cmp cx, [X_UNDER_sub_CUR_hot_x_add_curh] jae @f sub cx, [X_UNDER_subtraction_CUR_hot_x] jb @f ror ecx, 16 call check_mouse_area_for_putpixel_new.1 @@: ; store to LFB and eax, 00000000111110001111110011111000b shr ah, 2 shr ax, 3 ror eax, 8 add al, ah rol eax, 8 mov [LFB_BASE+ebx+edi], ax ret ;----------------------------------------------------------------------------- ; eax = x ; ebx = y align 4 Vesa20_putpixel24: mov ecx, eax shl ecx, 16 mov cx, bx ; imul ebx, [BytesPerScanLine] ; ebx = y * y multiplier mov ebx, [BPSLine_calc_area+ebx*4] lea edi, [eax+eax*2]; edi = x*3 mov eax, [esp+32-8+4] ; check for hardware cursor cmp [_display.select_cursor], 0 jne @f ; check mouse area for putpixel test eax, 0x04000000 jnz @f call check_mouse_area_for_putpixel @@: ; store to LFB mov [LFB_BASE+ebx+edi], ax shr eax, 16 mov [LFB_BASE+ebx+edi+2], al ret ;----------------------------------------------------------------------------- ; eax = x ; ebx = y align 4 Vesa20_putpixel24_new: mov ecx, eax shl ecx, 16 mov cx, bx ; imul ebx, [BytesPerScanLine] ; ebx = y * y multiplier mov ebx, [BPSLine_calc_area+ebx*4] lea edi, [eax+eax*2]; edi = x*3 mov eax, [esp+32-8+4] ; check for hardware cursor cmp [_display.select_cursor], select_cursor jne @f ; check mouse area for putpixel test eax, 0x04000000 jnz @f ; check for Y cmp cx, [Y_UNDER_sub_CUR_hot_y_add_curh] jae @f sub cx, [Y_UNDER_subtraction_CUR_hot_y] jb @f rol ecx, 16 ; check for X cmp cx, [X_UNDER_sub_CUR_hot_x_add_curh] jae @f sub cx, [X_UNDER_subtraction_CUR_hot_x] jb @f ror ecx, 16 call check_mouse_area_for_putpixel_new.1 @@: ; store to LFB mov [LFB_BASE+ebx+edi], ax shr eax, 16 mov [LFB_BASE+ebx+edi+2], al ret ;----------------------------------------------------------------------------- ; eax = x ; ebx = y align 4 Vesa20_putpixel32: mov ecx, eax shl ecx, 16 mov cx, bx ; imul ebx, [BytesPerScanLine] ; ebx = y * y multiplier mov ebx, [BPSLine_calc_area+ebx*4] lea edi, [ebx+eax*4] ; edi = x*4+(y*y multiplier) mov eax, [esp+32-8+4] ; eax = color ; check for hardware cursor cmp [_display.select_cursor], 0 jne @f ; check mouse area for putpixel test eax, 0x04000000 jnz @f call check_mouse_area_for_putpixel @@: and eax, 0xffffff ; store to LFB mov [LFB_BASE+edi], eax ret ;----------------------------------------------------------------------------- ; eax = x ; ebx = y align 4 Vesa20_putpixel32_new: mov ecx, eax shl ecx, 16 mov cx, bx ; imul ebx, [BytesPerScanLine] ; ebx = y * y multiplier mov ebx, [BPSLine_calc_area+ebx*4] lea edi, [ebx+eax*4] ; edi = x*4+(y*y multiplier) mov eax, [esp+32-8+4] ; eax = color ; check for hardware cursor cmp [_display.select_cursor], select_cursor jne @f ; check mouse area for putpixel test eax, 0x04000000 jnz @f ; check for Y cmp cx, [Y_UNDER_sub_CUR_hot_y_add_curh] jae @f sub cx, [Y_UNDER_subtraction_CUR_hot_y] jb @f rol ecx, 16 ; check for X cmp cx, [X_UNDER_sub_CUR_hot_x_add_curh] jae @f sub cx, [X_UNDER_subtraction_CUR_hot_x] jb @f ror ecx, 16 call check_mouse_area_for_putpixel_new.1 @@: and eax, 0x00ffffff ; store to LFB mov [LFB_BASE+edi], eax ret ;----------------------------------------------------------------------------- align 4 calculate_edi: ; mov edi, ebx ; imul edi, [Screen_Max_X] ; add edi, ebx mov edi, [d_width_calc_area + ebx*4] add edi, eax ret ;----------------------------------------------------------------------------- ; DRAWLINE ;----------------------------------------------------------------------------- ; eax = x1 shl 16 + x2 ; ebx = y1 shl 16 + y2 ; ecx = color ; edi = force ? align 4 __sys_draw_line: 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 pusha 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) ; correction for the remainder of the division shl edx, 1 cmp ebp, edx jb @f inc eax @@: mov edx, ebp ; edx = counter (number of pixels to draw) mov ebp, 1 shl 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) ; correction for the remainder of the division shl edx, 1 cmp esi, edx jb @f inc eax @@: mov edx, esi ; edx = counter (number of pixels to draw) mov esi, 1 shl 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 and ecx, 0xFBFFFFFF ; negate 0x04000000 save to mouseunder area .draw: push eax ebx ; correction for the remainder of the division test ah, 0x80 jz @f add eax, 1 shl 16 @@: shr eax, 16 ; correction for the remainder of the division test bh, 0x80 jz @f add ebx, 1 shl 16 @@: shr ebx, 16 ; and ecx, 0xFBFFFFFF ; negate 0x04000000 save to mouseunder area ; call [putpixel] call __sys_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] ; and ecx, 0xFBFFFFFF ;n egate 0x04000000 save to mouseunder area ; call [putpixel] call __sys_putpixel .exit: add esp, 6*4 popa ; call [draw_pointer] ret ;------------------------------------------------------------------------------ ; draw an horizontal line ; eax = x1 ; edx = x2 ; ebx = y ; ecx = color ; edi = force ? align 4 hline: push eax edx cmp edx, eax ; make sure x2 is above x1 jge @f xchg eax, edx @@: and ecx, 0xFBFFFFFF ;negate 0x04000000 save to mouseunder area @@: ; call [putpixel] call __sys_putpixel inc eax cmp eax, edx jle @b pop edx eax ret ;------------------------------------------------------------------------------ ; draw a vertical line ; eax = x ; ebx = y1 ; edx = y2 ; ecx = color ; edi = force ? align 4 vline: push ebx edx cmp edx, ebx ; make sure y2 is above y1 jge @f xchg ebx, edx @@: and ecx, 0xFBFFFFFF ;negate 0x04000000 save to mouseunder area @@: ; call [putpixel] call __sys_putpixel inc ebx cmp ebx, edx jle @b pop edx ebx ret ;------------------------------------------------------------------------------ ; eax cx ; ebx cy ; ecx xe ; edx ye ; edi color align 4 vesa20_drawbar: 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 ? .real_sx_and_abs_cx dd ? .real_sy_and_abs_cy dd ? .stack_data = 4*13 end virtual pushad 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 inc ebx ; WDATA.box.width is one pixel less than real window x-size 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, [_display.width] sub eax, [drbar.real_sx] mov [drbar.line_inc_map], eax ; 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] mov eax, [drbar.abs_cx] imul eax, ebx add edx, eax ; pointer to pixel map mov eax, [drbar.abs_cy] ; 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 ebx, [drbar.abs_cx] mov [drbar.real_sx_and_abs_cx], ebx mov ebx, [drbar.real_sy] add ebx, [drbar.abs_cy] mov [drbar.real_sy_and_abs_cy], ebx add edx, LFB_BASE ; get process number mov ebx, [CURRENT_TASK] ; bl - process num mov esi, [drbar.real_sy] mov eax, [drbar.color] ; BBGGRR00 rol eax, 8 mov bh, al ; 0x80 drawing gradient bars ror eax, 8 cmp byte [_display.bits_per_pixel], 16 je draw_bar_end_16 cmp byte [_display.bits_per_pixel], 24 je draw_bar_end_24 cmp byte [_display.bits_per_pixel], 32 je draw_bar_end_32 ;-------------------------------------- ; eax - color high RRGGBB ; bl - process num ; ecx - temp ; edx - pointer to screen ; esi - counter ; edi - counter align 4 draw_bar_end_24: ; check for hardware cursor mov ecx, [_display.select_cursor] cmp ecx, select_cursor je draw_bar_end_24_new cmp ecx, 0 je draw_bar_end_24_old .new_y: mov edi, [drbar.real_sx] .new_x: cmp byte [ebp], bl jne .skip ; store to LFB mov [edx], ax shr eax, 16 mov [edx + 2], al .skip: ; add pixel add edx, 3 inc ebp dec edi jnz .new_x ; add line add edx, [drbar.line_inc_scr] add ebp, [drbar.line_inc_map] ; drawing gradient bars test bh, 0x80 jz @f test al, al jz @f dec al @@: dec esi jnz .new_y .end: add esp, drbar.stack_data popad xor eax, eax ret ;------------------------------------------------------------------------------ align 4 draw_bar_end_24_old: .new_y: mov edi, [drbar.real_sx] .new_x: cmp byte [ebp], bl jne .skip mov ecx, [drbar.real_sx_and_abs_cx] sub ecx, edi shl ecx, 16 add ecx, [drbar.real_sy_and_abs_cy] sub ecx, esi ; check mouse area for putpixel call check_mouse_area_for_putpixel ; store to LFB mov [edx], ax shr eax, 16 mov [edx + 2], al mov eax, [drbar.color] .skip: ; add pixel add edx, 3 inc ebp dec edi jnz .new_x ; add line add edx, [drbar.line_inc_scr] add ebp, [drbar.line_inc_map] ; drawing gradient bars test bh, 0x80 jz @f test al, al jz @f dec al @@: dec esi jnz .new_y jmp draw_bar_end_24.end ;------------------------------------------------------------------------------ align 4 draw_bar_end_24_new: .new_y: mov edi, [drbar.real_sx] .new_x: cmp byte [ebp], bl jne .skip mov ecx, [drbar.real_sy_and_abs_cy] sub ecx, esi ; check for Y cmp cx, [Y_UNDER_sub_CUR_hot_y_add_curh] jae .no_mouse_area sub cx, [Y_UNDER_subtraction_CUR_hot_y] jb .no_mouse_area rol ecx, 16 add ecx, [drbar.real_sx_and_abs_cx] sub ecx, edi ; check for X cmp cx, [X_UNDER_sub_CUR_hot_x_add_curh] jae .no_mouse_area sub cx, [X_UNDER_subtraction_CUR_hot_x] jb .no_mouse_area ror ecx, 16 ; check mouse area for putpixel push eax call check_mouse_area_for_putpixel_new.1 mov [edx], ax shr eax, 16 mov [edx + 2], al pop eax jmp .skip .no_mouse_area: ; store to LFB mov [edx], ax ror eax, 16 mov [edx + 2], al rol eax, 16 .skip: ; add pixel add edx, 3 inc ebp dec edi jnz .new_x ; add line add edx, [drbar.line_inc_scr] add ebp, [drbar.line_inc_map] ; drawing gradient bars test bh, 0x80 jz @f test al, al jz @f dec al @@: dec esi jnz .new_y jmp draw_bar_end_24.end ;------------------------------------------------------------------------------ ; eax - color high RRGGBB ; bl - process num ; ecx - temp ; edx - pointer to screen ; esi - counter ; edi - counter draw_bar_end_32: ; check for hardware cursor mov ecx, [_display.select_cursor] cmp ecx, select_cursor je draw_bar_end_32_new cmp ecx, 0 je draw_bar_end_32_old .new_y: mov edi, [drbar.real_sx] .new_x: cmp byte [ebp], bl jne .skip ; store to LFB mov [edx], eax mov eax, [drbar.color] .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] ; drawing gradient bars test bh, 0x80 jz @f test al, al jz @f dec al @@: dec esi jnz .new_y .end: add esp, drbar.stack_data popad cmp [SCR_MODE], 0x12 jne @f call VGA_draw_bar @@: xor eax, eax mov [EGA_counter], 1 ret draw_bar_end_32_old: .new_y: mov edi, [drbar.real_sx] .new_x: cmp byte [ebp], bl jne .skip mov ecx, [drbar.real_sx_and_abs_cx] sub ecx, edi shl ecx, 16 add ecx, [drbar.real_sy_and_abs_cy] sub ecx, esi ; check mouse area for putpixel call check_mouse_area_for_putpixel ; store to LFB mov [edx], eax mov eax, [drbar.color] .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] ; drawing gradient bars test bh, 0x80 jz @f test al, al jz @f dec al @@: dec esi jnz .new_y jmp draw_bar_end_32.end ;------------------------------------------------------------------------------ align 4 draw_bar_end_32_new: .new_y: mov edi, [drbar.real_sx] .new_x: cmp byte [ebp], bl jne .skip mov ecx, [drbar.real_sy_and_abs_cy] sub ecx, esi ; check for Y cmp cx, [Y_UNDER_sub_CUR_hot_y_add_curh] jae .no_mouse_area sub cx, [Y_UNDER_subtraction_CUR_hot_y] jb .no_mouse_area rol ecx, 16 add ecx, [drbar.real_sx_and_abs_cx] sub ecx, edi ; check for X cmp cx, [X_UNDER_sub_CUR_hot_x_add_curh] jae .no_mouse_area sub cx, [X_UNDER_subtraction_CUR_hot_x] jb .no_mouse_area ror ecx, 16 ; check mouse area for putpixel push eax call check_mouse_area_for_putpixel_new.1 mov [edx], eax pop eax jmp .skip .no_mouse_area: ; store to LFB mov [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] ; drawing gradient bars test bh, 0x80 jz @f test al, al jz @f dec al @@: dec esi jnz .new_y jmp draw_bar_end_32.end ;------------------------------------------------------------------------------ ; eax - color high RRGGBB ; bl - process num ; ecx - temp ; edx - pointer to screen ; esi - counter ; edi - counter align 4 draw_bar_end_16: ; check for hardware cursor mov ecx, [_display.select_cursor] cmp ecx, select_cursor je draw_bar_end_16_new cmp ecx, 0 je draw_bar_end_16_old .new_y: mov edi, [drbar.real_sx] .new_x: cmp byte [ebp], bl jne .skip ; convert to 16 bpp and store to LFB and eax, 00000000111110001111110011111000b shr ah, 2 shr ax, 3 ror eax, 8 add al, ah rol eax, 8 mov [edx], ax mov eax, [drbar.color] .skip: ; add pixel add edx, 2 inc ebp dec edi jnz .new_x ; add line add edx, [drbar.line_inc_scr] add ebp, [drbar.line_inc_map] ; drawing gradient bars test bh, 0x80 jz @f test al, al jz @f dec al @@: dec esi jnz .new_y .end: add esp, drbar.stack_data popad cmp [SCR_MODE], 0x12 jne @f call VGA_draw_bar @@: xor eax, eax mov [EGA_counter], 1 ret ;------------------------------------------------------------------------------ align 4 draw_bar_end_16_old: .new_y: mov edi, [drbar.real_sx] .new_x: cmp byte [ebp], bl jne .skip mov ecx, [drbar.real_sx_and_abs_cx] sub ecx, edi shl ecx, 16 add ecx, [drbar.real_sy_and_abs_cy] sub ecx, esi ; check mouse area for putpixel call check_mouse_area_for_putpixel ; convert to 16 bpp and store to LFB and eax, 00000000111110001111110011111000b shr ah, 2 shr ax, 3 ror eax, 8 add al, ah rol eax, 8 mov [edx], ax mov eax, [drbar.color] .skip: ; add pixel add edx, 2 inc ebp dec edi jnz .new_x ; add line add edx, [drbar.line_inc_scr] add ebp, [drbar.line_inc_map] ; drawing gradient bars test bh, 0x80 jz @f test al, al jz @f dec al @@: dec esi jnz .new_y jmp draw_bar_end_16.end ;------------------------------------------------------------------------------ align 4 draw_bar_end_16_new: .new_y: mov edi, [drbar.real_sx] .new_x: cmp byte [ebp], bl jne .skip mov ecx, [drbar.real_sy_and_abs_cy] sub ecx, esi ; check for Y cmp cx, [Y_UNDER_sub_CUR_hot_y_add_curh] jae .no_mouse_area sub cx, [Y_UNDER_subtraction_CUR_hot_y] jb .no_mouse_area rol ecx, 16 add ecx, [drbar.real_sx_and_abs_cx] sub ecx, edi ; check for X cmp cx, [X_UNDER_sub_CUR_hot_x_add_curh] jae .no_mouse_area sub cx, [X_UNDER_subtraction_CUR_hot_x] jb .no_mouse_area ror ecx, 16 ; check mouse area for putpixel push eax call check_mouse_area_for_putpixel_new.1 push eax and eax, 00000000111110001111110011111000b shr ah, 2 shr ax, 3 ror eax, 8 add al, ah rol eax, 8 mov [edx], ax pop eax pop eax jmp .skip .no_mouse_area: ; convert to 16 bpp and store to LFB push eax and eax, 00000000111110001111110011111000b shr ah, 2 shr ax, 3 ror eax, 8 add al, ah rol eax, 8 mov [edx], ax pop eax .skip: ; add pixel add edx, 2 inc ebp dec edi jnz .new_x ; add line add edx, [drbar.line_inc_scr] add ebp, [drbar.line_inc_map] ; drawing gradient bars test bh, 0x80 jz @f test al, al jz @f dec al @@: dec esi jnz .new_y jmp draw_bar_end_16.end ;------------------------------------------------------------------------------ align 4 vesa20_drawbackground_tiled: 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 mov eax, [BPSLine_calc_area+ebx*4] xchg ebp, eax add ebp, eax add ebp, eax cmp byte [_display.bytes_per_pixel], 2 je @f add ebp, eax cmp byte [_display.bytes_per_pixel], 3 je @f add ebp, eax @@: 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 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 .next_pix push eax ecx mov ecx, eax shl ecx, 16 add ecx, ebx mov eax, [esi] ; check for hardware cursor cmp [_display.select_cursor], select_cursor je @f cmp [_display.select_cursor], 0 jne .no_mouseunder @@: and eax, 0xffffff ; check mouse area for putpixel call [_display.check_mouse] .no_mouseunder: cmp byte [_display.bits_per_pixel], 16 je .16bpp ; store to LFB mov [edi], ax shr eax, 16 mov [edi+2], al pop ecx eax jmp .next_pix .16bpp: ; convert to 16 bpp and store to LFB and eax, 00000000111110001111110011111000b shr ah, 2 shr ax, 3 ror eax, 8 add al, ah rol eax, 8 mov [edi], ax pop ecx eax ; Advance to next pixel .next_pix: add esi, 3 add edi, [_display.bytes_per_pixel] 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 mov [EGA_counter], 1 cmp [SCR_MODE], 0x12 jne @f call VGA_drawbackground @@: ret ;------------------------------------------------------------------------------ align 4 vesa20_drawbackground_stretch: pushad ; Helper variables ; calculate 2^32*(BgrDataWidth-1) mod (ScreenWidth-1) mov eax, [BgrDataWidth] dec eax xor edx, edx div dword [_display.width] push eax ; high xor eax, eax div dword [_display.width] push eax ; low ; the same for height mov eax, [BgrDataHeight] dec eax xor edx, edx div dword [_display.height] push eax ; high xor eax, eax div dword [_display.height] 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 mov eax, [BPSLine_calc_area+ebx*4] xchg ebp, eax add ebp, eax add ebp, eax cmp byte [_display.bytes_per_pixel], 2 jz @f add ebp, eax cmp byte [_display.bytes_per_pixel], 3 jz @f 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, [_display.win_map] 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: push ecx ; check for hardware cursor cmp [_display.select_cursor], select_cursor je @f cmp [_display.select_cursor], 0 jne .no_mouseunder @@: mov ecx, [esp+20+4] ;x shl ecx, 16 add ecx, [esp+24+4] ;y ; check mouse area for putpixel call [_display.check_mouse] .no_mouseunder: cmp [_display.bits_per_pixel], 16 jne .not_16bpp ; convert to 16 bpp and store to LFB and eax, 00000000111110001111110011111000b shr ah, 2 shr ax, 3 ror eax, 8 add al, ah rol eax, 8 mov [LFB_BASE+edi], ax pop ecx jmp snbgp .not_16bpp: ; store to LFB mov [LFB_BASE+edi], ax shr eax, 16 mov [LFB_BASE+edi+2], al pop ecx snbgp: add edi, [_display.bytes_per_pixel] add ebp, 1 mov eax, [esp+20] add eax, 1 mov [esp+20], eax add esi, 4 cmp eax, [draw_data+32+RECT.right] jbe sdp3a sdp4: ; next y mov ebx, [esp+24] add ebx, 1 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, [_display.width] sub edi, eax sub edi, eax cmp byte [_display.bytes_per_pixel], 2 jz @f sub edi, eax 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 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, [_display.width] rep movsd jmp bgr_resmooth1 sdpdone: add esp, 44 popad mov [EGA_counter], 1 cmp [SCR_MODE], 0x12 jne @f call VGA_drawbackground @@: ret ;-------------------------------------- align 4 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] add eax, 1 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: if 0 ; this version of procedure works, but is slower than next version push ecx edx mov edx, eax push esi shr ecx, 24 mov esi, ecx mov ecx, ebx movzx ebx, dl movzx eax, cl sub eax, ebx movzx ebx, dh imul eax, esi add dl, ah movzx eax, ch sub eax, ebx imul eax, esi add dh, ah ror ecx, 16 ror edx, 16 movzx eax, cl movzx ebx, dl sub eax, ebx imul eax, esi pop esi add dl, ah mov eax, edx pop edx ror eax, 16 pop ecx ret else 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 end if ;------------------------------------------------------------------------------ align 4 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 ;------------------------------------------------------------------------------