draw ok seulement si x est modulo de 8
This commit is contained in:
Frater
parent
633b630b92
commit
88d4cb076b
4 changed files with 161 additions and 120 deletions
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@ -252,11 +252,16 @@ gfx_getpixel_fast:
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gfx_cursor_move:
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pusha
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push ds
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push es
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; move Data Segment
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mov ax, BDA_DATA_SEG
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mov ds, ax
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cmp byte [BDA_MOUSE + mouse.cur_drawing],0
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jne .done
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mov byte [BDA_MOUSE + mouse.cur_drawing],1
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mov ax, VIDEO_SEG
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mov es, ax
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@ -265,32 +270,39 @@ gfx_cursor_move:
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call gfx_cursor_savebg
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call gfx_cursor_draw
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mov byte [BDA_MOUSE + mouse.cur_drawing],0
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.done:
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pop es
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pop ds
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popa
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ret
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; ------------------------------------------------------------
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; Dessine le curseur 16x16 AND/XOR à [BDA_CURSOR_NEWX],[BDA_CURSOR_NEWY]
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; Dessine le curseur 16x16 AND/XOR à [mouse.x,mouse.y]
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;
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; CS:SI = base du sprite (AND[16] suivi de XOR[16] à +32 bytes)
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; Uses: BDA_CURSOR_BITOFF/BDA_CURSOR_BYTES (via gfx_cursor_calc_align)
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; sprite (AND[16] suivi de XOR[16] à +32 bytes)
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; ------------------------------------------------------------
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gfx_cursor_draw:
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; pusha
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mov ax, BDA_DATA_SEG
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mov ds, ax
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mov ax, VIDEO_SEG
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mov es, ax
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mov ax, word [BDA_MOUSE + mouse.cur_ofs]
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mov si, ax
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mov ax, word [BDA_MOUSE + mouse.cur_seg]
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mov gs, ax
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mov cx, word [BDA_MOUSE + mouse.x]
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mov dx, word [BDA_MOUSE + mouse.y]
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mov word [BDA_MOUSE + mouse.cur_x], cx ; sauvegarde la nouvelle position
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mov word [BDA_MOUSE + mouse.cur_y], dx
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; calcule offset et bytes/ligne (2 ou 3)
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call gfx_cursor_calc_align
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mov bl, byte [BDA_MOUSE + mouse.cur_bit_ofs]; 0..7
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@ -310,20 +322,20 @@ gfx_cursor_draw:
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mov dh, 8
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.pair:
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; ----- ligne row (bank courant) -----
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push di
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push si
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; push di
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; push si
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call .draw_line ; utilise DI, row=BX
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pop si
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pop di
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; pop si
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; pop di
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; ----- ligne row+1 (autre bank) -----
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add di, bp
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inc bh
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push di
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push si
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; push di
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; push si
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call .draw_line
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pop si
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pop di
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; pop si
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; pop di
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sub di, bp
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; avancer de 2 lignes (dans le bank courant): +80 bytes
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@ -340,31 +352,30 @@ gfx_cursor_draw:
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; .draw_line: applique AND/XOR sur une ligne de 16 pixels à ES:DI
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; row index dans BX (0..15)
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; offset dans BL (0..7)
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; sprite base CS:SI
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; sprite base GS:SI
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; ------------------------------------------------------------
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.draw_line:
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push ax
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push cx
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push dx
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push bp
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push di
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; charger masks de la ligne: AND = [SI + row*2], XOR = [SI + 32 + row*2]
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xor ax, ax
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mov al, bh
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shl ax, 1 ; row*2
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shl ax, 1 ; row*2
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push si
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add si, ax
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mov cx, [cs:si] ; AND mask
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mov cx, [gs:si] ; AND mask
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add si, 32
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mov dx, [cs:si] ; XOR mask
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mov dx, [gs:si] ; XOR mask
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pop si
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; lire bytes source
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mov al, [es:di] ; b0
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mov al, [es:di] ; b0
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inc di
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mov ah, [es:di] ; b1
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mov ah, [es:di] ; b1
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dec di
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; w0 = (b0<<8)|b1 dans AX déjà
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@ -373,9 +384,9 @@ gfx_cursor_draw:
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; unaligned: besoin b2 et w1 = (b1<<8)|b2
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add di, 2
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mov dl, [es:di] ; b2
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mov dl, [es:di] ; b2
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sub di, 2
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mov dh, ah ; b1
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mov dh, ah ; b1
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; DX = w1 (b1<<8)|b2
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; seg = (w0<<off) | (w1>>(8-off))
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@ -470,13 +481,11 @@ gfx_cursor_draw:
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mov [es:di], al ; low
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.done:
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pop di
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pop bp
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pop dx
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pop cx
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pop ax
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ret
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; ------------------------------------------------------------
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; Sauvegarde le background (24x16) sous le curseur
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;
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@ -488,19 +497,17 @@ gfx_cursor_savebg:
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mov byte [BDA_MOUSE + mouse.bkg_saved], 1 ; image saved
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mov cx, [BDA_MOUSE + mouse.x] ;
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mov cx, [BDA_MOUSE + mouse.x] ;
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mov dx, [BDA_MOUSE + mouse.y]
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mov word [BDA_MOUSE + mouse.cur_x], cx ; sauvegarde la nouvelle position
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mov word [BDA_MOUSE + mouse.cur_y], dx
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call gfx_calc_addr ; ES:DI = byteaddr pour (X,Y)
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mov dx,0x2000 ; offset pour lignes impaire
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cmp di,dx
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jl .no_odd_bank
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neg dx ; Y est déja une ligne impaire, on retire l'offset
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.no_odd_bank:
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mov ax, di ; préserver l'address de départ
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mov ax, di ; préserver l'address de départ
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mov word [BDA_MOUSE + mouse.cur_addr_start],ax
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mov word [BDA_MOUSE + mouse.cur_bank_add], dx
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@ -546,7 +553,7 @@ gfx_cursor_restorebg:
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mov ax, word [BDA_MOUSE + mouse.cur_addr_start]
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mov di,ax
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mov dx, word [BDA_MOUSE + mouse.cur_bank_add]
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mov ax, BDA_MOUSE + mouse.bkg_buffer
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mov si, ax ; DS:SI = buffer de sauvegarde
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mov bx, 8 ; 16 lignes, mais nous traitons "en une fois" les paire/impaires
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@ -63,6 +63,7 @@ mouse_reset:
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mov byte [fs:BDA_MOUSE + mouse.cur_visible], 1
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mov word [fs:BDA_MOUSE + mouse.cur_x], 0
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mov word [fs:BDA_MOUSE + mouse.cur_y], 0
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mov byte [fs:BDA_MOUSE + mouse.cur_drawing], 0
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mov ax, cs
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mov word [fs:BDA_MOUSE + mouse.cur_seg], ax
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@ -301,6 +302,7 @@ isr_mouse_handler:
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; lire un octet depuis le contrôleur et le stocker dans le buffer
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in al, i8042_PS2_DATA ; lire octet souris
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movzx bx, byte [BDA_MOUSE + mouse.idx]
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mov byte [BDA_MOUSE + mouse.buffer + bx], al
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inc byte [BDA_MOUSE + mouse.idx]
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@ -308,20 +310,29 @@ isr_mouse_handler:
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; vérifier si le packet est complet
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mov al, [BDA_MOUSE + mouse.packetlen]
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cmp byte [BDA_MOUSE + mouse.idx], al
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jne .done
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jb .done
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; packet complet, on decode les données
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mov byte [BDA_MOUSE + mouse.idx], 0
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mov al, [BDA_MOUSE + mouse.buffer] ; status
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mov [BDA_MOUSE + mouse.status], al
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mov bl, [BDA_MOUSE + mouse.buffer] ; status
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mov [BDA_MOUSE + mouse.status], bl
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xor ax,ax
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mov al, byte [BDA_MOUSE + mouse.buffer+1] ; delta X
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mov al, byte [BDA_MOUSE + mouse.buffer+1] ; delta X
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test bl,00010000b ; signe X
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jz .x_pos
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or al, 0xF0
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.x_pos:
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cbw
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add [BDA_MOUSE + mouse.x], ax
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xor ax,ax
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mov al, byte [BDA_MOUSE + mouse.buffer+2] ; delta Y
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mov al, byte [BDA_MOUSE + mouse.buffer+2] ; delta Y
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test bl,00100000b ; signe Y
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jz .y_pos
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or al, 0xF0
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.y_pos:
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cbw
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sub [BDA_MOUSE + mouse.y], ax
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@ -349,14 +360,8 @@ isr_mouse_handler:
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jle .y_ok_high
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mov word [BDA_MOUSE + mouse.y], 199
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.y_ok_high:
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; restaurer l'ancien arrière plan du curseur
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call gfx_cursor_restorebg
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; sauvegarder le nouvel arrière plan du curseur
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call gfx_cursor_savebg
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call gfx_cursor_draw
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;call gfx_cursor_move
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.done:
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mov al, 0x20
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out i8259_SLAVE_CMD, al ; EOI PIC esclave
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