forked from KolibriOS/kolibrios
* Rewritten Vesa2 background code, it is much faster now
* Fixed kernel fault when creating files with unusual names with multiple dots git-svn-id: svn://kolibrios.org@527 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Evgeny Grechnikov (Diamond)
parent
6c6a00efd0
commit
141e4c2c3d
@ -1444,14 +1444,19 @@ fat_gen_short_name:
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add ebx, edi
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sub ebx, ecx
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push ebx
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cmp ebx, ecx
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jb @f
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pop ebx
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push ecx
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@@:
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cmp edi, ecx
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jbe .skip
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@@:
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dec edi
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mov al, ' '
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xchg al, [edi]
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mov al, [edi]
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dec ebx
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mov [ebx], al
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mov byte [edi], ' '
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cmp edi, ecx
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ja @b
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.skip:
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@ -305,6 +305,9 @@ virtual at (OS_BASE+0x043BF80)
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tss TSS
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end virtual
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BgrDrawMode equ (OS_BASE+0x043EFF4)
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BgrDataWidth equ (OS_BASE+0x043EFF8)
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BgrDataHeight equ (OS_BASE+0x043EFFC)
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WinMapAddress equ (OS_BASE+0x043F000)
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display_data equ (OS_BASE+0x043F000)
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@ -107,7 +107,7 @@ use16
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org 0x0
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jmp start_of_code
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version db 'Kolibri OS version 0.6.5.0 ',13,10,13,10,0
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version db 'Kolibri OS version 0.7.0.0 pre ',13,10,13,10,0
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include "boot/bootstr.inc" ; language-independent boot messages
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include "boot/preboot.inc"
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@ -521,9 +521,9 @@ high_code:
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; set background
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xor eax,eax
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inc eax
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mov [display_data-12],eax
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mov [display_data-8],eax
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mov [display_data-4],eax
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mov [BgrDrawMode],eax
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mov [BgrDataWidth],eax
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mov [BgrDataHeight],eax
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mov [mem_BACKGROUND],4095
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stdcall kernel_alloc, [mem_BACKGROUND]
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mov [img_background], eax
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@ -1119,7 +1119,6 @@ set_variables:
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pop eax
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mov byte [SB16_Status],0 ; Minazzi Paolo
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mov [display_data-12],dword 1 ; tiled background
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mov [BTN_ADDR],dword BUTTON_INFO ; address of button list
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;!! IP 04.02.2005:
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@ -2287,7 +2286,7 @@ endg
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iglobal
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version_inf:
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db 0,6,5,0 ; version 0.6.5.0
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db 0,7,0,0 ; version 0.7.0.0
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db UID_KOLIBRI
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db 'Kolibri',0
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version_end:
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@ -2356,8 +2355,8 @@ sys_background:
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je sbgrr
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cmp ecx,0
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je sbgrr
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mov [display_data-8],ebx
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mov [display_data-4],ecx
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mov [BgrDataWidth],ebx
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mov [BgrDataHeight],ecx
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; mov [bgrchanged],1
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pushad
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@ -2366,18 +2365,17 @@ sys_background:
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; calculate RAW size
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xor eax,eax
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inc eax
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cmp [display_data-8],eax
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cmp [BgrDataWidth],eax
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jae @f
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mov [display_data-8],eax
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mov [BgrDataWidth],eax
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@@:
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cmp [display_data-4],eax
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cmp [BgrDataHeight],eax
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jae @f
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mov [display_data-4],eax
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mov [BgrDataHeight],eax
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@@:
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mov eax,[display_data-8]
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imul eax,[display_data-4]
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inc eax
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imul eax,3
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mov eax,[BgrDataWidth]
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imul eax,[BgrDataHeight]
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lea eax,[eax*3]
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mov [mem_BACKGROUND],eax
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; get memory for new background
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stdcall kernel_alloc, [mem_BACKGROUND]
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@ -2425,9 +2423,9 @@ draw_background_temp:
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cmp eax,4 ; TILED / STRETCHED
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jnz nosb4
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cmp ebx,[display_data-12]
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cmp ebx,[BgrDrawMode]
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je nosb41
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mov [display_data-12],ebx
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mov [BgrDrawMode],ebx
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; mov [bgrchanged],1
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nosb41:
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ret
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@ -2436,11 +2434,8 @@ draw_background_temp:
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cmp eax,5 ; BLOCK MOVE TO BGR
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jnz nosb5
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; bughere
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mov edi, [TASK_BASE]
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add ebx, [edi+TASKDATA.mem_start]
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mov eax, ebx
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mov ebx, ecx
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add ecx, edx
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add ebx, [img_background] ;IMG_BACKGROUND
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mov ecx, edx
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call memmove
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@ -2457,9 +2452,9 @@ sys_getbackground:
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cmp eax,1 ; SIZE
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jnz nogb1
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mov eax,[display_data-8]
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mov eax,[BgrDataWidth]
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shl eax,16
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mov ax,[display_data-4]
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mov ax,[BgrDataWidth]
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mov [esp+36],eax
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ret
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nogb1:
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@ -2480,7 +2475,7 @@ sys_getbackground:
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cmp eax,4 ; TILED / STRETCHED
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jnz nogb4
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mov eax,[display_data-12]
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mov eax,[BgrDrawMode]
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nogb4:
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mov [esp+36],eax
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ret
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@ -4098,7 +4093,7 @@ drawbackground:
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call [draw_pointer]
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ret
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dbrv20:
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cmp [display_data-12],dword 1
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cmp [BgrDrawMode],dword 1
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jne bgrstr
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call vesa20_drawbackground_tiled
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dec [mouse_pause]
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@ -206,8 +206,8 @@ vesa12_drawbackground:
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push edx
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xor edx,edx
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mov eax,dword[WinMapAddress-8]
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mov ebx,dword[WinMapAddress-4]
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mov eax,dword[BgrDataWidth]
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mov ebx,dword[BgrDataHeight]
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mul ebx
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mov ebx,3
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mul ebx
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@ -220,23 +220,19 @@ vesa12_drawbackground:
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push eax
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push ebx
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mov esi,[img_background] ;IMG_BACKGROUND
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cmp [WinMapAddress-12],dword 1 ; tiled background
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cmp [BgrDrawMode],dword 1 ; tiled background
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jne no_vesa12_tiled_bgr
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push edx
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xor edx,edx
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mov ecx,[WinMapAddress-8]
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div ecx
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mov eax,edx
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div dword [BgrDataWidth]
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push eax
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push edx
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mov eax,ebx
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xor edx,edx
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mov ecx,[WinMapAddress-4]
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div ecx
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div dword [BgrDataHeight]
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mov ebx,edx
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pop eax
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@ -244,21 +240,19 @@ vesa12_drawbackground:
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no_vesa12_tiled_bgr:
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cmp [WinMapAddress-12],dword 2 ; stretched background
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cmp [BgrDrawMode],dword 2 ; stretched background
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jne no_vesa12_stretched_bgr
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push edx
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imul eax,dword [WinMapAddress-8]
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xor edx,edx
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mul dword [BgrDataWidth]
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mov ecx,[ScreenWidth]
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inc ecx
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div ecx
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push eax
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mov eax,ebx
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imul eax,dword [WinMapAddress-4]
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xor edx,edx
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mul dword [BgrDataHeight]
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mov ecx,[ScreenHeight]
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inc ecx
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div ecx
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@ -270,34 +264,26 @@ vesa12_drawbackground:
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no_vesa12_stretched_bgr:
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push eax
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mov eax,ebx
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xor edx,edx
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mov ebx,[WinMapAddress-8]
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add ebx,[WinMapAddress-8]
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add ebx,[WinMapAddress-8]
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mul ebx
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mov esi,eax
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pop eax
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add esi,eax
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add esi,eax
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mov esi,ebx
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imul esi, dword [BgrDataWidth]
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add esi,eax
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lea esi,[esi*3]
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add esi,[img_background] ;IMG_BACKGROUND
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pop ebx
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pop eax
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v12di4:
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mov ecx,[esi]
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mov cl,[esi+2]
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shl ecx,16
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mov cx,[esi]
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pusha
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mov esi,eax
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mov edi,ebx
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mov eax,[ScreenWidth]
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add eax,1
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mul ebx
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add eax,esi
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add eax,WinMapAddress
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cmp [eax],byte 1
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cmp [eax+esi+WinMapAddress],byte 1
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jnz v12nbgp
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mov eax,[BytesPerScanLine]
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mov ebx,edi
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@ -769,107 +769,88 @@ align 4
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; ret
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;--------------vbe voodoo ------------------------------------------------
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vesa20_drawbackground_tiled:
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call [disable_mouse]
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push ebp
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push eax
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push ebx
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push ecx
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push edx
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mov edx,dword [WinMapAddress-8] ; B
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add edx,dword [WinMapAddress-8] ; +B
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add edx,dword [WinMapAddress-8] ; +B
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push edx
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mov ebp,[draw_data+32+RECT.left] ; x start:=(x+Xwin)
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mov ebx,[draw_data+32+RECT.top] ; y start:=(y+Ywin)
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pushad
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; External loop for all y from start to end
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mov ebx, [draw_data+32+RECT.top] ; y start
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dp2:
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mov ebp, [draw_data+32+RECT.left] ; x start
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; 1) Calculate pointers in WinMapAddress (does pixel belong to OS thread?) [ebp]
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; and LFB data (output for our function) [edi]
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mov eax, [BytesPerScanLine]
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mul ebx
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xchg ebp, eax ; BytesPerScanLine*(Ywin+y)
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add ebp, eax ; +X
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add ebp, eax ; +X
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add ebp, eax ; +X
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xchg ebp, eax
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add ebp, eax
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add ebp, eax
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add ebp, eax
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cmp [ScreenBPP], byte 24 ; 24 or 32 bpp ? - x size
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jz @f
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add ebp,eax ; +X
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add ebp, eax
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@@:
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add ebp,[LFBAddress] ; +LFB
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add ebp, [LFBAddress]
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; ebp:=Y*BytesPerScanLine+X*BytesPerPixel+AddrLFB
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call calculate_edi
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dp3: ; MAIN LOOP
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cmp [edi+WinMapAddress],byte 1 ; ptrBuffer^<>byte(1)
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jne nbgp
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push eax
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push ebx
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mov ecx,dword [WinMapAddress-8] ; B
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xor edx,edx ; edx:=0
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div ecx ; Xstart/B
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; eax=Int(qn) edx:=Rem
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lea esi,[edx+edx*2] ; esi:=edx*3
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mov ecx,dword [WinMapAddress-4] ; ecx:=H
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mov eax,[esp+0] ; eax:=Ystart
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xor edx,edx ;
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div ecx ; Ystart/H
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mov eax,edx ; eax:=Rem
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xor edx,edx ;
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mov ebx,[esp+8] ; ebx:=B*3
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mul ebx ;
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add esi,eax ;
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; mov eax,[esi+IMG_BACKGROUND]
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mov eax,[img_background]
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mov eax,[esi+eax]
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and eax,0xffffff
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xchg edi, ebp
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stosw
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shr eax,16
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stosb
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xchg ebp, edi ; ebp+=3
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cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ? - x size
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jz @f
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inc ebp ; +1
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@@:
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pop ebx
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; Now eax=x, ebx=y, edi->output, ebp=offset in WinMapAddress
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; 2) Calculate offset in background memory block
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push eax
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xor edx, edx
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mov eax, ebx
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mov ecx, [BgrDataHeight]
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div ecx ; edx := y mod BgrDataHeight
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sub ecx, edx ; ecx := BgrDataHeight - (y mod BgrDataHeight)
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pop eax
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jmp hook1
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push eax
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mov esi, edx
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imul esi, [BgrDataWidth] ; esi := (y mod BgrDataHeight) * BgrDataWidth
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xor edx, edx
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div dword [BgrDataWidth] ; edx := x mod BgrDataWidth
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add esi, edx ; esi := (y mod BgrDataHeight)*BgrDataWidth + (x mod BgrDataWidth)
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pop eax
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lea esi, [esi*3]
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add esi, [img_background]
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xor edx, edx
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inc edx
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; 3) Loop through redraw rectangle and copy background data
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; Registers meaning:
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; eax = x, ebx = y (screen coordinates)
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; ecx = deltax - number of pixels left in current tile block
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; edx = 1
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; esi -> bgr memory, edi -> output
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; ebp = offset in WinMapAddress
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dp3:
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cmp [ebp+WinMapAddress], dl
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jnz nbgp
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movsb
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movsb
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movsb
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jmp @f
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nbgp:
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add ebp,3 ; +3
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cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ? - x size
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jz @f
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inc ebp ; +1
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add esi, 3
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add edi, 3
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@@:
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hook1:
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inc edi ; ptrBuffer++
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add esi,3 ; ptrImage+=3
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inc eax
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cmp eax,[draw_data+32+RECT.right] ; X > xend?
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jle dp3
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mov ebp,[draw_data+32+RECT.left]
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cmp [ScreenBPP], byte 25 ; 24 or 32 bpp?
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sbb edi, -1 ; +1 for 32 bpp
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; I do not use 'inc eax' because this is slightly slower then 'add eax,1'
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add ebp, edx
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add eax, edx
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cmp eax, [draw_data+32+RECT.right]
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ja dp4
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sub ecx, edx
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jnz dp3
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; next tile block on x-axis
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mov ecx, [BgrDataWidth]
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sub esi, ecx
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sub esi, ecx
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sub esi, ecx
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jmp dp3
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dp4:
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; next scan line
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inc ebx
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mov eax,[BytesPerScanLine]
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mul ebx
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xchg ebp, eax ; BytesPerScanLine*(Ywin+y)
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add ebp, eax ; +X
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add ebp, eax ; +X=X*2
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add ebp, eax ; +X=X*3
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cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ? - x size
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jz @f
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add ebp,eax ; +X=X*4
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@@:
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add ebp,[LFBAddress] ; +LFB
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; ebp:=Y*BytesPerScanLine+X*BytesPerPixel+AddrLFB
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call calculate_edi
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cmp ebx, [draw_data+32+RECT.bottom]
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jle dp3
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add esp,4
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pop edx
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pop ecx
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pop ebx
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pop eax
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pop ebp
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jbe dp2
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popad
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mov [EGA_counter], 1
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call VGA_drawbackground
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ret
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@ -879,220 +860,194 @@ hook1:
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vesa20_drawbackground_stretch:
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call [disable_mouse]
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push ebp
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pushad
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; Helper variables
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mov eax, [BgrDataWidth]
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xor edx, edx
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mov ecx, [ScreenWidth]
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inc ecx
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div ecx
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push eax ; quo
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push edx ; rem
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mov eax, [BgrDataHeight]
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xor edx, edx
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mov ecx, [ScreenHeight]
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inc ecx
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div ecx
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push eax
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push ebx
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push ecx
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push edx
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mov edx,dword [WinMapAddress-8] ; B
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add edx,dword [WinMapAddress-8] ; +B
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add edx,dword [WinMapAddress-8] ; +B
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push edx
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mov ebp,[draw_data+32+RECT.left] ; x start:=(x+Xwin)
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mov ebx,[draw_data+32+RECT.top] ; y start:=(y+Ywin)
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; External loop for all y from start to end
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mov ebx, [draw_data+32+RECT.top] ; y start
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mov ebp, [draw_data+32+RECT.left] ; x start
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; 1) Calculate pointers in WinMapAddress (does pixel belong to OS thread?) [ebp]
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; and LFB data (output for our function) [edi]
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mov eax, [BytesPerScanLine]
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mul ebx
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xchg ebp, eax ; BytesPerScanLine*(Ywin+y)
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add ebp, eax ; +X
|
||||
add ebp, eax ; +X
|
||||
add ebp, eax ; +X
|
||||
xchg ebp, eax
|
||||
add ebp, eax
|
||||
add ebp, eax
|
||||
add ebp, eax
|
||||
cmp [ScreenBPP], byte 24 ; 24 or 32 bpp ? - x size
|
||||
jz @f
|
||||
add ebp,eax ; +X
|
||||
add ebp, eax
|
||||
@@:
|
||||
add ebp,[LFBAddress] ; +LFB
|
||||
add ebp, [LFBAddress]
|
||||
; ebp:=Y*BytesPerScanLine+X*BytesPerPixel+AddrLFB
|
||||
call calculate_edi
|
||||
|
||||
sdp3: ; MAIN LOOP
|
||||
cmp [edi+WinMapAddress],byte 1 ; ptrBuffer^<>byte(1)
|
||||
jne snbgp
|
||||
push eax
|
||||
push ebx
|
||||
mov eax,dword [WinMapAddress-8]
|
||||
imul eax, [esp+4] ;4
|
||||
xor edx,edx
|
||||
mov ebx,[ScreenWidth]
|
||||
div ebx
|
||||
mov cx,dx
|
||||
lea esi,[eax+eax*2]
|
||||
mov eax,dword [WinMapAddress-4]
|
||||
imul eax, [esp+0] ;0
|
||||
xor edx,edx
|
||||
mov ebx,[ScreenHeight]
|
||||
div ebx
|
||||
shl ecx,16
|
||||
mov cx,dx
|
||||
imul eax, [esp+8] ;8
|
||||
add esi,eax
|
||||
; mov eax,[esi+IMG_BACKGROUND]
|
||||
mov eax,[img_background]
|
||||
|
||||
push eax
|
||||
mov eax,[display_data-4]
|
||||
imul eax,[display_data-8]
|
||||
imul eax,3
|
||||
sub eax,3
|
||||
cmp eax,esi
|
||||
pop eax
|
||||
jbe @f
|
||||
|
||||
mov eax,[esi+eax]
|
||||
@@:
|
||||
push eax
|
||||
ror ecx,16
|
||||
xor eax,eax
|
||||
mov ax,cx
|
||||
shl eax,1 ; óìíîæåíèå íà 2
|
||||
lea eax,[eax+eax*4] ; óìíîæåíèå íà 5
|
||||
xor edx,edx
|
||||
mov ebx,[ScreenWidth]
|
||||
div ebx
|
||||
cmp eax,5
|
||||
pop eax
|
||||
jb @f
|
||||
; mov ebx,[esi+IMG_BACKGROUND+3]
|
||||
mov ebx,[img_background]
|
||||
|
||||
push eax
|
||||
mov eax,[display_data-4]
|
||||
imul eax,[display_data-8]
|
||||
imul eax,3
|
||||
sub eax,3
|
||||
cmp eax,esi
|
||||
pop eax
|
||||
jbe @f
|
||||
|
||||
mov ebx,[esi+ebx+3]
|
||||
|
||||
call overlapping_of_points
|
||||
@@:
|
||||
push eax
|
||||
ror ecx,16
|
||||
xor eax,eax
|
||||
mov ax,cx
|
||||
shl eax,1 ; óìíîæåíèå íà 2
|
||||
lea eax,[eax+eax*4] ; óìíîæåíèå íà
|
||||
xor edx,edx
|
||||
mov ebx,[ScreenHeight]
|
||||
div ebx
|
||||
cmp eax,5
|
||||
pop eax
|
||||
jb @f
|
||||
mov ebx,[display_data-8]
|
||||
shl ebx,1
|
||||
add ebx,[display_data-8]
|
||||
add ebx,[img_background] ;IMG_BACKGROUND
|
||||
|
||||
push eax
|
||||
mov eax,[display_data-4]
|
||||
imul eax,[display_data-8]
|
||||
imul eax,3
|
||||
cmp eax,esi
|
||||
pop eax
|
||||
jbe @f
|
||||
|
||||
add ebx,esi
|
||||
mov ebx,[ebx]
|
||||
call overlapping_of_points
|
||||
@@:
|
||||
and eax,0xffffff
|
||||
xchg edi, ebp
|
||||
stosw
|
||||
shr eax,16
|
||||
stosb
|
||||
xchg ebp, edi ; ebp+=3
|
||||
cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ? - x size
|
||||
jz @f
|
||||
inc ebp ; +1
|
||||
@@:
|
||||
pop ebx
|
||||
; Now eax=x, ebx=y, edi->output, ebp=offset in WinMapAddress
|
||||
push ebx
|
||||
; 2) Calculate offset in background memory block
|
||||
push eax
|
||||
mov eax, ebx
|
||||
mul dword [BgrDataHeight]
|
||||
mov ecx, [ScreenHeight]
|
||||
inc ecx
|
||||
div ecx ; eax := y * BgrDataHeight / ScreenHeight
|
||||
; edx := (y * BgrDataHeight) mod ScreenHeight
|
||||
mov esi, eax
|
||||
pop eax
|
||||
jmp shook1
|
||||
push edx ; dword [esp] = (y * BgrDataHeight) mod ScreenHeight
|
||||
; dword [esp+4] = y * BgrDataHeight / ScreenHeight
|
||||
push eax
|
||||
mov ecx, [BgrDataWidth]
|
||||
mul ecx
|
||||
imul esi, ecx
|
||||
dec ecx
|
||||
push ecx
|
||||
mov ecx, [ScreenWidth]
|
||||
inc ecx
|
||||
div ecx ; eax := x * BgrDataWidth / ScreenWidth
|
||||
; edx := (x * BgrDataWidth) mod ScreenWidth
|
||||
add esi, eax
|
||||
lea esi, [esi*3]
|
||||
add esi, [img_background]
|
||||
push ecx edx esi
|
||||
; 3) Loop through redraw rectangle and copy background data
|
||||
; Registers meaning:
|
||||
; ecx = (x * BgrDataWidth) / ScreenWidth
|
||||
; edx = (x * BgrDataWidth) mod ScreenWidth (used to fast recalculating of ecx,esi)
|
||||
; esi -> bgr memory, edi -> output
|
||||
; ebp = offset in WinMapAddress
|
||||
; dword [esp] = saved esi
|
||||
; dword [esp+4] = saved edx
|
||||
; dword [esp+8] = saved ecx
|
||||
; dword [esp+12] = limit for overlapping of points
|
||||
; dword [esp+16] = x
|
||||
; dword [esp+20] = (y * BgrDataHeight) mod ScreenHeight (used to fast recalculating of esi)
|
||||
; dword [esp+24] = y
|
||||
; precalculated constants:
|
||||
; dword [esp+28] = BgrDataHeight mod ScreenHeight
|
||||
; dword [esp+32] = BgrDataHeight div ScreenHeight
|
||||
; dword [esp+36] = BgrDataWidth mod ScreenWidth
|
||||
; dword [esp+40] = BgrDataWidth div ScreenWidth
|
||||
sdp3:
|
||||
cmp [ebp+WinMapAddress], byte 1
|
||||
jnz snbgp
|
||||
mov al, [esi+2]
|
||||
shl eax, 16
|
||||
mov ax, [esi]
|
||||
cmp ecx, [esp+12]
|
||||
jae @f
|
||||
mov ebx, [esi+2]
|
||||
shr ebx, 8
|
||||
call overlapping_of_points
|
||||
@@:
|
||||
mov [edi], ax
|
||||
shr eax, 16
|
||||
mov [edi+2], al
|
||||
snbgp:
|
||||
cmp [ScreenBPP], byte 25
|
||||
sbb edi, -4
|
||||
add ebp, 1
|
||||
mov eax, [esp+16]
|
||||
add eax, 1
|
||||
mov [esp+16], eax
|
||||
cmp eax, [draw_data+32+RECT.right]
|
||||
ja sdp4
|
||||
mov eax, [esp+40]
|
||||
add ecx, eax
|
||||
lea eax, [eax*3]
|
||||
add esi, eax
|
||||
add edx, [esp+36]
|
||||
cmp edx, [ScreenWidth]
|
||||
jbe sdp3
|
||||
sub edx, [ScreenWidth]
|
||||
add ecx, 1
|
||||
add esi, 3
|
||||
sub edx, 1
|
||||
jmp sdp3
|
||||
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, [ScreenWidth]
|
||||
add ebp, 1
|
||||
sub edi, eax
|
||||
sub edi, eax
|
||||
sub edi, eax
|
||||
cmp [ScreenBPP], byte 24
|
||||
jz @f
|
||||
sub edi, eax
|
||||
@@:
|
||||
add edi, [BytesPerScanLine]
|
||||
; restore ecx,edx; advance esi to next background line
|
||||
pop esi edx ecx
|
||||
push ecx edx
|
||||
xor ebx, ebx
|
||||
mov eax, [esp+20-4]
|
||||
add eax, [esp+28-4]
|
||||
cmp eax, [ScreenHeight]
|
||||
jbe @f
|
||||
sub eax, [ScreenHeight]
|
||||
mov ebx, 1
|
||||
sub eax, ebx
|
||||
@@:
|
||||
mov [esp+20-4], eax
|
||||
add ebx, [esp+32-4]
|
||||
lea ebx, [ebx*3]
|
||||
imul ebx, [BgrDataWidth]
|
||||
add esi, ebx
|
||||
push esi
|
||||
mov eax, [draw_data+32+RECT.left]
|
||||
mov [esp+16], eax
|
||||
jmp sdp3
|
||||
sdpdone:
|
||||
add esp, 44
|
||||
popad
|
||||
mov [EGA_counter],1
|
||||
call VGA_drawbackground
|
||||
ret
|
||||
|
||||
overlapping_of_points:
|
||||
push ecx edi
|
||||
push ecx edx edi
|
||||
mov ecx, eax
|
||||
mov edx, ebx
|
||||
xor eax,eax
|
||||
mov al,cl
|
||||
xor ebx,ebx
|
||||
mov bl,dl
|
||||
movzx eax, cl
|
||||
movzx ebx, dl
|
||||
add eax, ebx
|
||||
rcr eax, 1
|
||||
xor edi,edi
|
||||
mov di,ax
|
||||
xor eax,eax
|
||||
mov al,ch
|
||||
xor ebx,ebx
|
||||
mov bl,dh
|
||||
movzx edi, ax
|
||||
movzx eax, ch
|
||||
movzx ebx, dh
|
||||
add eax, ebx
|
||||
rcr eax, 1
|
||||
ror edi, 8
|
||||
add edi, eax
|
||||
ror ecx,8
|
||||
ror edx,8
|
||||
xor eax,eax
|
||||
mov al,ch
|
||||
xor ebx,ebx
|
||||
mov bl,dh
|
||||
shr ecx, 8
|
||||
shr edx, 8
|
||||
movzx eax, ch
|
||||
movzx ebx, dh
|
||||
add eax, ebx
|
||||
rcr eax, 1
|
||||
ror edi, 8
|
||||
add eax, edi
|
||||
ror eax, 16
|
||||
pop edi ecx
|
||||
ret
|
||||
|
||||
snbgp:
|
||||
add ebp,3 ; +3
|
||||
cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ? - x size
|
||||
jz @f
|
||||
inc ebp ; +1
|
||||
@@:
|
||||
|
||||
shook1:
|
||||
inc edi ; ptrBuffer++
|
||||
add esi,3 ; ptrImage+=3
|
||||
inc eax
|
||||
cmp eax,[draw_data+32+RECT.right] ; X > xend?
|
||||
jle sdp3
|
||||
; jbe sdp3
|
||||
|
||||
mov ebp,[draw_data+32+RECT.left]
|
||||
|
||||
inc ebx
|
||||
|
||||
mov eax,[BytesPerScanLine]
|
||||
mul ebx
|
||||
xchg ebp, eax ; BytesPerScanLine*(Ywin+y)
|
||||
add ebp, eax ; +X
|
||||
add ebp, eax ; +X=X*2
|
||||
add ebp, eax ; +X=X*3
|
||||
cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ? - x size
|
||||
jz @f
|
||||
add ebp,eax ; +X=X*4
|
||||
@@:
|
||||
add ebp,[LFBAddress] ; +LFB
|
||||
|
||||
; ebp:=Y*BytesPerScanLine+X*BytesPerPixel+AddrLFB
|
||||
|
||||
call calculate_edi
|
||||
|
||||
; cmp ebx,[ScreenHeight]
|
||||
; ja @f
|
||||
|
||||
cmp ebx,[draw_data+32+RECT.bottom]
|
||||
jle sdp3
|
||||
; jbe sdp3
|
||||
@@:
|
||||
add esp,4
|
||||
|
||||
pop edx
|
||||
pop ecx
|
||||
pop ebx
|
||||
pop eax
|
||||
pop ebp
|
||||
mov [EGA_counter],1
|
||||
call VGA_drawbackground
|
||||
pop edi edx ecx
|
||||
ret
|
||||
|
||||
Loading…
Reference in New Issue
Block a user