Subversion Repositories Kolibri OS

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;                                                                 ;;

;; Copyright (C) KolibriOS team 2010-2015. All rights reserved.    ;;

;; Distributed under terms of the GNU General Public License       ;;

;;                                                                 ;;

;;  VNC client for KolibriOS                                       ;;

;;                                                                 ;;

;;  Written by hidnplayr@kolibrios.org                             ;;

;;                                                                 ;;

;;          GNU GENERAL PUBLIC LICENSE                             ;;

;;             Version 2, June 1991                                ;;

;;                                                                 ;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

encoding_CopyRect:

        DEBUGF  1,"CopyRect\n"

  @@:

        lea     eax, [esi+4]

        cmp     [datapointer], eax

        jae     @f

        call    read_data.more

        jmp     @b

  @@:

        push    esi

        movzx   eax, word[esi+2]                        ; [src.y]

        xchg    al, ah

        movzx   ebx, [screen.width]

        mul     ebx                                     ; [screen.width]*[src.y]

        movzx   ebx, word[esi]                          ; [src.x]

        xchg    bl, bh

        add     eax, ebx                                ; [screen.width]*[src.y]+[src.x]

        lea     esi, [framebuffer+eax*3]                ; esi = framebuffer_data+([screen.width]*[src.y]+[src.x])*3

        mov     eax, [rectangle.y]

        movzx   ebx, [screen.width]

        mul     ebx                                     ; [screen.width]*[rectangle.y]

        add     eax, [rectangle.x]                      ; [screen.width]*[rectangle.y]+[rectangle.x]

        lea     edi, [framebuffer+eax*3]                ; edi = framebuffer_data+([screen.width]*[rectangle.y]+[rectangle.x])*3

        movzx   eax, [screen.width]

        sub     eax, [rectangle.width]

        lea     ebp, [eax*3]                            ; ebp = ([screen.width]-[rectangle.width])*3

        cmp     esi, edi

        ja      .not_backwards

; Source pixels come before destination in buffer, copy backwards.

        DEBUGF  1,"backwards\n"

        mov     eax, [rectangle.height]

        dec     eax

        movzx   edx, [screen.width]

        mul     edx

        add     eax, [rectangle.width]

        lea     eax, [eax*3-1]                          ; eax = (([rectangle.height]-1)*[screen.width]+[rectangle.width])*3-1

        add     esi, eax

        add     edi, eax

        neg     ebp

        std

  .not_backwards:

; Do the actual copying

        mov     eax, [rectangle.width]

        lea     eax, [eax*3]

        mov     ebx, eax

        and     eax, 11b

        shr     ebx, 2

        mov     edx, [rectangle.height]

  .lineloop:

        mov     ecx, eax

        rep movsb

        mov     ecx, ebx

        rep movsd

        add     esi, ebp

        add     edi, ebp

        dec     edx

        jnz     .lineloop

        pop     esi

        add     esi, 4

        cld

        jmp     next_rectangle