blitbit.asm

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ASM
3,447 行
字号
1234
	shl	ebx,5
	shld	eax,ebx,5
	shl	eax,3
	shl	ebx,5
	shld	eax,ebx,5
	shl	eax,3
	stosw
	shr	eax,16
	stosb
@@32k_2:	dec	ecx
	jnz	@@32k_1
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	dec	edx
	jnz	@@32k_0
	add	edi,d[CurrentBankBig]
	jmp	@@9
@@32k_3:	add	edi,3
	jmp	@@32k_2
;
@@b32k:	pushm	ecx,esi,edi
@@b32k_0:	lodsw
	cmp	ax,w[_VBB_Chroma]
	jz	@@b32k_3
	movzx	ebx,ax
	shl	ebx,1+16
	xor	eax,eax
	shld	eax,ebx,5
	shl	eax,3
	shl	ebx,5
	shld	eax,ebx,5
	shl	eax,3
	shl	ebx,5
	shld	eax,ebx,5
	shl	eax,3
	mov	bl,3
@@b32k_4:	bank	edi
	sub	edi,d[CurrentBankBig]
	stosb
	shr	eax,8
	add	edi,d[CurrentBankBig]
	dec	bl
	jnz	@@b32k_4
@@b32k_2:	dec	ecx
	jnz	@@b32k_0
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	jmp	@@9
@@b32k_3:	add	edi,3
	jmp	@@b32k_2
;
;64k colour bitmap.
;
@@64k:	or	ebx,ebx
	jz	@@b64k
	sub	edi,d[CurrentBankBig]
@@64k_0:	pushm	ecx,esi,edi
@@64k_1:	lodsw
	cmp	ax,w[_VBB_Chroma]
	jz	@@64k_3
	movzx	ebx,ax
	shl	ebx,16
	xor	eax,eax
	shld	eax,ebx,5
	shl	eax,3
	shl	ebx,5
	shld	eax,ebx,6
	shl	eax,2
	shl	ebx,6
	shld	eax,ebx,5
	shl	eax,3
	stosw
	shr	eax,16
	stosb
@@64k_2:	dec	ecx
	jnz	@@64k_1
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	dec	edx
	jnz	@@64k_0
	add	edi,d[CurrentBankBig]
	jmp	@@9
@@64k_3:	add	edi,3
	jmp	@@64k_2
;
@@b64k:	pushm	ecx,esi,edi
@@b64k_0:	lodsw
	cmp	ax,w[_VBB_Chroma]
	jz	@@b64k_3
	movzx	ebx,ax
	shl	ebx,16
	xor	eax,eax
	shld	eax,ebx,5
	shl	eax,3
	shl	ebx,5
	shld	eax,ebx,6
	shl	eax,2
	shl	ebx,6
	shld	eax,ebx,5
	shl	eax,3
	mov	bl,3
@@b64k_4:	bank	edi
	sub	edi,d[CurrentBankBig]
	stosb
	shr	eax,8
	add	edi,d[CurrentBankBig]
	dec	bl
	jnz	@@b64k_4
@@b64k_2:	dec	ecx
	jnz	@@b64k_0
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	jmp	@@9
@@b64k_3:	add	edi,3
	jmp	@@b64k_2
;
;16m colour bitmap.
;
@@16m:	or	ebx,ebx
	jz	@@b16m
	lea	ecx,[ecx][ecx*2]
	sub	edi,d[CurrentBankBig]
@@16m_0:	pushm	ecx,esi,edi
@@16m_1:	lodsd
	dec	esi
	and	eax,0ffffffh
	cmp	eax,d[_VBB_Chroma]
	jz	@@16m_3
	stosw
	shr	eax,16
	stosb
@@16m_2:	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	dec	edx
	jnz	@@16m_0
	add	edi,d[CurrentBankBig]
	jmp	@@9
@@16m_3:	add	edi,3
	jmp	@@16m_2
;
@@b16m:	pushm	ecx,esi,edi
@@b16m_0:	lodsd
	dec	esi
	and	eax,0ffffffh
	cmp	eax,d[_VBB_Chroma]
	jz	@@b16m_3
	mov	bl,3
@@b16m_4:	bank	edi
	sub	edi,d[CurrentBankBig]
	stosb
	shr	eax,8
	add	edi,d[CurrentBankBig]
	dec	bl
	jnz	@@b16m_4
@@b16m_2:	dec	ecx
	jnz	@@b16m_0
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	jmp	@@9
@@b16m_3:	add	edi,3
	jmp	@@b16m_2
;
@@9:	ret
vPutORBitmap16m endp


;-------------------------------------------------------------------------
;
;Blit a bitmap in 16m 32-bit colour mode.
;
;On Entry:
;
;EBX	- state, 0=broken, !=0=clean.
;ECX	- width.
;EDX	- depth.
;ESI	- source.
;EDI	- destination.
;EBP	- Bitmap (BM) header.
;
vPutORBitmap16m32 proc near
	push	edx
	mov	eax,BM_Wide[ebp]
	mul	BM_PWide[ebp]
	pop	edx
	mov	ebp,BM_Flags[ebp]
	xchg	ebp,eax
	and	eax,15
	jz	@@256
	dec	eax
	jz	@@32k
	dec	eax
	jz	@@64k
	dec	eax
	jz	@@16m
	jmp	@@9
;
;256 colour bitmap.
;
@@256:	or	ebx,ebx
	jz	@@b256
	sub	edi,d[CurrentBankBig]
@@256_0:	pushm	ecx,esi,edi
@@256_1:	lodsb
	movzx	eax,al
	cmp	al,b[_VBB_Chroma]
	jz	@@256_3
	mov	eax,d[HardwarePalette+eax][eax*2]
	shl	eax,2
	mov	bl,al
	shr	eax,8
	xchg	ah,bl
	shl	eax,8
	mov	al,bl
	stosd
@@256_2:	dec	ecx
	jnz	@@256_1
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	dec	edx
	jnz	@@256_0
	add	edi,d[CurrentBankBig]
	jmp	@@9
@@256_3:	add	edi,4
	jmp	@@256_2
;
@@b256:	pushm	ecx,esi,edi
@@b256_0:	bank	edi
	sub	edi,d[CurrentBankBig]
	lodsb
	movzx	eax,al
	cmp	al,b[_VBB_Chroma]
	jz	@@b256_3
	mov	eax,d[HardwarePalette+eax][eax*2]
	shl	eax,2
	mov	bl,al
	shr	eax,8
	xchg	ah,bl
	shl	eax,8
	mov	al,bl
	stosd
@@b256_2:	add	edi,d[CurrentBankBig]
	dec	ecx
	jnz	@@b256_0
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	jmp	@@9
@@b256_3:	add	edi,4
	jmp	@@b256_2
;
;32k colour bitmap.
;
@@32k:	or	ebx,ebx
	jz	@@b32k
	sub	edi,d[CurrentBankBig]
@@32k_0:	pushm	ecx,esi,edi
@@32k_1:	lodsw
	cmp	ax,w[_VBB_Chroma]
	jz	@@32k_3
	movzx	ebx,ax
	shl	ebx,1+16
	xor	eax,eax
	shld	eax,ebx,5
	shl	eax,3
	shl	ebx,5
	shld	eax,ebx,5
	shl	eax,3
	shl	ebx,5
	shld	eax,ebx,5
	shl	eax,3
	stosd
@@32k_2:	dec	ecx
	jnz	@@32k_1
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	dec	edx
	jnz	@@32k_0
	add	edi,d[CurrentBankBig]
	jmp	@@9
@@32k_3:	add	edi,4
	jmp	@@32k_2
;
@@b32k:	pushm	ecx,esi,edi
@@b32k_0:	bank	edi
	sub	edi,d[CurrentBankBig]
	lodsw
	cmp	ax,w[_VBB_Chroma]
	jz	@@b32k_3
	movzx	ebx,ax
	shl	ebx,1+16
	xor	eax,eax
	shld	eax,ebx,5
	shl	eax,3
	shl	ebx,5
	shld	eax,ebx,5
	shl	eax,3
	shl	ebx,5
	shld	eax,ebx,5
	shl	eax,3
	stosd
@@b32k_2:	add	edi,d[CurrentBankBig]
	dec	ecx
	jnz	@@b32k_0
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	jmp	@@9
@@b32k_3:	add	edi,4
	jmp	@@b32k_2
;
;64k colour bitmap.
;
@@64k:	or	ebx,ebx
	jz	@@b64k
	sub	edi,d[CurrentBankBig]
@@64k_0:	pushm	ecx,esi,edi
@@64k_1:	lodsw
	cmp	ax,w[_VBB_Chroma]
	jz	@@64k_3
	movzx	ebx,ax
	shl	ebx,16
	xor	eax,eax
	shld	eax,ebx,5
	shl	eax,3
	shl	ebx,5
	shld	eax,ebx,6
	shl	eax,2
	shl	ebx,6
	shld	eax,ebx,5
	shl	eax,3
	stosd
@@64k_2:	dec	ecx
	jnz	@@64k_1
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	dec	edx
	jnz	@@64k_0
	add	edi,d[CurrentBankBig]
	jmp	@@9
@@64k_3:	add	edi,4
	jmp	@@64k_2
;
@@b64k:	pushm	ecx,esi,edi
@@b64k_0:	bank	edi
	sub	edi,d[CurrentBankBig]
	lodsw
	cmp	ax,w[_VBB_Chroma]
	jz	@@b64k_3
	movzx	ebx,ax
	shl	ebx,16
	xor	eax,eax
	shld	eax,ebx,5
	shl	eax,3
	shl	ebx,5
	shld	eax,ebx,6
	shl	eax,2
	shl	ebx,6
	shld	eax,ebx,5
	shl	eax,3
	stosd
@@b64k_2:	add	edi,d[CurrentBankBig]
	dec	ecx
	jnz	@@b64k_0
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	jmp	@@9
@@b64k_3:	add	edi,4
	jmp	@@b64k_2
;
;16m colour bitmap.
;
@@16m:	or	ebx,ebx
	jz	@@b16m
	sub	edi,d[CurrentBankBig]
@@16m_0:	pushm	ecx,esi,edi
@@16m_1:	lodsd
	dec	esi
	and	eax,0ffffffh
	cmp	eax,d[_VBB_Chroma]
	jz	@@16m_3
	stosd
@@16m_2:	dec	ecx
	jnz	@@16m_1
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	dec	edx
	jnz	@@16m_0
	add	edi,d[CurrentBankBig]
	jmp	@@9
@@16m_3:	add	edi,4
	jmp	@@16m_2
;
@@b16m:	pushm	ecx,esi,edi
@@b16m_0:	bank	edi
	sub	edi,d[CurrentBankBig]
	lodsd
	dec	esi
	and	eax,0ffffffh
	cmp	eax,d[_VBB_Chroma]
	jz	@@b16m_3
	stosd
@@b16m_2:	add	edi,d[CurrentBankBig]
	dec	ecx
	jnz	@@b16m_0
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	jmp	@@9
@@b16m_3:	add	edi,4
	jmp	@@b16m_2
;
@@9:	ret
vPutORBitmap16m32 endp


;-------------------------------------------------------------------------
;
;Blit a bitmap in text mode.
;
;On Entry:
;
;EBX	- state, 0=broken, !=0=clean.
;ECX	- width.
;EDX	- depth.
;ESI	- source.
;EDI	- destination.
;EBP	- Bitmap (BM) header.
;
vPutORBitmapText proc near
	push	edx
	mov	eax,BM_Wide[ebp]
	mul	BM_PWide[ebp]
	pop	edx
	mov	ebp,BM_Flags[ebp]
	xchg	ebp,eax
	and	eax,1
	jz	@@chars
	dec	eax
	jz	@@chratt
	jmp	@@9
;
;Just character data.
;
@@chars:	sub	edi,d[CurrentBankBig]
@@chars_0:	pushm	ecx,esi,edi
@@chars_1:	lodsb
	cmp	al,b[_VBB_Chroma]
	jz	@@chars_3
	stosb
	inc	edi
@@chars_2:	dec	ecx
	jnz	@@chars_1
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	dec	edx
	jnz	@@chars_0
	add	edi,d[CurrentBankBig]
	jmp	@@9
@@chars_3:	add	edi,2
	jmp	@@chars_2
;
;Character and attribute data.
;
@@chratt:	sub	edi,d[CurrentBankBig]
@@chratt_0:	pushm	ecx,esi,edi
@@chratt_1:	lodsw
	cmp	ax,w[_VBB_Chroma]
	jz	@@chratt_3
	stosw
@@chratt_2:	dec	ecx
	jnz	@@chratt_1
	popm	ecx,esi,edi
	add	esi,ebp
	add	edi,VideoHardwareWidth
	dec	edx
	jnz	@@chratt_0
	add	edi,d[CurrentBankBig]
	jmp	@@9
@@chratt_3:	add	edi,2
	jmp	@@chratt_2
;
@@9:	ret
vPutORBitmapText endp


;-------------------------------------------------------------------------
;
;Blit a bitmap in 256 colour mode.
;
;On Entry:
;
;EBX	- state, 0=broken, !=0=clean.
;ECX	- width.
;EDX	- depth.
;ESI	- source.
;EDI	- destination.
;EBP	- Bitmap (BM) header.
;
vGetBitmap256	proc	near
	mov	BM_Flags[ebp],0
	mov	BM_PWide[ebp],1
	push	edx
	mov	eax,BM_Wide[ebp]
	mul	BM_PWide[ebp]
	pop	edx
	mov	ebp,eax
	;
	assume ds:nothing
	pushm	ds,es
	popm	es,ds
	;
	or	ebx,ebx
	jz	@@b256
	sub	esi,ss:d[CurrentBankBig]
@@256_0:	pushm	ecx,esi,edi
	rep_movsb
	popm	ecx,esi,edi
	add	edi,ebp
	add	esi,ss:VideoHardwareWidth
	dec	edx
	jnz	@@256_0
	add	esi,ss:d[CurrentBankBig]
	jmp	@@9
;
@@b256:	pushm	ecx,esi,edi
@@b256_0:	bank	esi
	sub	esi,ss:d[CurrentBankBig]
	movsb
	add	esi,ss:d[CurrentBankBig]
	dec	ecx
	jnz	@@b256_0
	popm	ecx,esi,edi
	add	edi,ebp
	add	esi,ss:VideoHardwareWidth
;
@@9:	pushm	ds,es
	popm	es,ds
	assume ds:DGROUP
	ret
vGetBitmap256	endp


;-------------------------------------------------------------------------
;
;Blit a bitmap in 32k colour mode.
;
;On Entry:
;
;EBX	- state, 0=broken, !=0=clean.
;ECX	- width.
;EDX	- depth.
;ESI	- source.
;EDI	- destination.
;EBP	- Bitmap (BM) header.
;
vGetBitmap32k	proc	near
	mov	BM_Flags[ebp],1
	mov	BM_PWide[ebp],2
	push	edx
	mov	eax,BM_Wide[ebp]
	mul	BM_PWide[ebp]
	pop	edx
	mov	ebp,eax
	;
	assume ds:nothing
	pushm	ds,es
	popm	es,ds
	;
	or	ebx,ebx
	jz	@@b32k
	sub	esi,ss:d[CurrentBankBig]
@@32k_0:	pushm	ecx,esi,edi
	rep_movsw
	popm	ecx,esi,edi
	add	edi,ebp
	add	esi,ss:VideoHardwareWidth
	dec	edx
	jnz	@@32k_0
	add	esi,ss:d[CurrentBankBig]
	jmp	@@9
;
@@b32k:	pushm	ecx,esi,edi
@@b32k_0:	bank	esi
	sub	esi,ss:d[CurrentBankBig]
	movsw
	add	esi,ss:d[CurrentBankBig]
	dec	ecx
	jnz	@@b32k_0
	popm	ecx,esi,edi
	add	edi,ebp
	add	esi,ss:VideoHardwareWidth
;
@@9:	pushm	ds,es
	popm	es,ds
	assume ds:DGROUP
	ret
vGetBitmap32k	endp


;-------------------------------------------------------------------------
;
;Blit a bitmap in 256 colour mode.
;
;On Entry:
;
;EBX	- state, 0=broken, !=0=clean.
;ECX	- width.
;EDX	- depth.
;ESI	- source.
;EDI	- destination.
;EBP	- Bitmap (BM) header.
;
vGetBitmap64k	proc	near
	mov	BM_Flags[ebp],2
	mov	BM_PWide[ebp],2
	push	edx
	mov	eax,BM_Wide[ebp]
	mul	BM_PWide[ebp]
	pop	edx
	mov	ebp,eax
	;
	assume ds:nothing
	pushm	ds,es
	popm	es,ds
	;
	or	ebx,ebx
	jz	@@b64k
	sub	esi,ss:d[CurrentBankBig]
@@64k_0:	pushm	ecx,esi,edi
	rep_movsw
	popm	ecx,esi,edi
	add	edi,ebp
	add	esi,ss:VideoHardwareWidth
	dec	edx
	jnz	@@64k_0
	add	esi,ss:d[CurrentBankBig]
	jmp	@@9
;
@@b64k:	pushm	ecx,esi,edi
@@b64k_0:	bank	esi
	sub	esi,ss:d[CurrentBankBig]
	movsw
	add	esi,ss:d[CurrentBankBig]
	dec	ecx
	jnz	@@b64k_0
	popm	ecx,esi,edi
	add	edi,ebp
	add	esi,ss:VideoHardwareWidth
;
@@9:	pushm	ds,es
	popm	es,ds
	assume ds:DGROUP
	ret
vGetBitmap64k	endp


;-------------------------------------------------------------------------
;
;Blit a bitmap in 256 colour mode.
;
;On Entry:
;
;EBX	- state, 0=broken, !=0=clean.
;ECX	- width.
;EDX	- depth.
;ESI	- source.
;EDI	- destination.
;EBP	- Bitmap (BM) header.
;
vGetBitmap16m	proc	near
	mov	BM_Flags[ebp],3
	mov	BM_PWide[ebp],3
	push	edx
	mov	eax,BM_Wide[ebp]
	mul	BM_PWide[ebp]
	pop	edx
	mov	ebp,eax
	;
	assume ds:nothing
	pushm	ds,es
	popm	es,ds
	;
	or	ebx,ebx
	jz	@@b16m
	lea	ecx,[ecx][ecx*2]
	sub	esi,ss:d[CurrentBankBig]
@@16m_0:	pushm	ecx,esi,edi
	rep_movsb
	popm	ecx,esi,edi
	add	edi,ebp
	add	esi,ss:VideoHardwareWidth
	dec	edx
	jnz	@@16m_0
	add	esi,ss:d[CurrentBankBig]
	jmp	@@9
;
@@b16m:	pushm	ecx,esi,edi
	lea	ecx,[ecx+ecx*2]
@@b16m_0:	bank	esi
	sub	esi,ss:d[CurrentBankBig]
	movsb
	add	esi,ss:d[CurrentBankBig]
	dec	ecx
	jnz	@@b16m_0
	popm	ecx,esi,edi
	add	edi,ebp
	add	esi,ss:VideoHardwareWidth
;
@@9:	pushm	ds,es
	popm	es,ds
	assume ds:DGROUP
	ret
vGetBitmap16m	endp


;-------------------------------------------------------------------------
;
;Blit a bitmap in 16m 32-bit colour mode.
;
;On Entry:
;
;EBX	- state, 0=broken, !=0=clean.
;ECX	- width.
;EDX	- depth.
;ESI	- source.
;EDI	- destination.
;EBP	- Bitmap (BM) header.
;
vGetBitmap16m32 proc	near
	mov	BM_Flags[ebp],3
	mov	BM_PWide[ebp],3
	push	edx
	mov	eax,BM_Wide[ebp]
	mul	BM_PWide[ebp]
	pop	edx
	mov	ebp,eax
	;
	assume ds:nothing
	pushm	ds,es
	popm	es,ds
	;
	or	ebx,ebx
	jz	@@b16m
	sub	esi,ss:d[CurrentBankBig]
@@16m_0:	pushm	ecx,esi,edi
@@16m_1:	lodsd
	stosw
	shr	eax,16
	stosb
	dec	ecx
	jnz	@@16m_1
	popm	ecx,esi,edi
	add	edi,ebp
	add	esi,ss:VideoHardwareWidth
	dec	edx
	jnz	@@16m_0
	add	esi,ss:d[CurrentBankBig]
	jmp	@@9
;
@@b16m:	pushm	ecx,esi,edi
@@b16m_0:	bank	esi
	sub	esi,ss:d[CurrentBankBig]
	lodsd
	stosw
	shr	eax,16
	stosb
	add	esi,ss:d[CurrentBankBig]
	dec	ecx
	jnz	@@b16m_0
	popm	ecx,esi,edi
	add	edi,ebp
	add	esi,ss:VideoHardwareWidth
;
@@9:	pushm	ds,es
	popm	es,ds
	assume ds:DGROUP
	ret
vGetBitmap16m32 endp


;-------------------------------------------------------------------------
;
;Blit a bitmap in text mode.
;
;On Entry:
;
;EBX	- state, 0=broken, !=0=clean.
;ECX	- width.
;EDX	- depth.
;ESI	- source.
;EDI	- destination.
;EBP	- Bitmap (BM) header.
;
vGetBitmapText	proc	near
	mov	BM_Flags[ebp],8+1
	mov	BM_PWide[ebp],2
	push	edx
	mov	eax,BM_Wide[ebp]
	mul	BM_PWide[ebp]
	pop	edx
	mov	ebp,eax
	;
	assume ds:nothing
	pushm	ds,es
	popm	es,ds
	;
	sub	esi,ss:d[CurrentBankBig]
@@256_0:	pushm	ecx,esi,edi
	rep_movsw
	popm	ecx,esi,edi
	add	edi,ebp
	add	esi,ss:VideoHardwareWidth
	dec	edx
	jnz	@@256_0
	add	esi,ss:d[CurrentBankBig]
	jmp	@@9
;
@@9:	pushm	ds,es
	popm	es,ds
	assume ds:DGROUP
	ret
vGetBitmapText	endp


	sdata

_VBB_Chroma	dd ?
;
PutRoutines	dd vPutBitmap256,vPutBitmap32k,vPutBitmap64k,vPutBitmap16m
	dd vPutBitmap16m32,3 dup (NearNull)
	dd NearNull
	dd vPutBitmapText
	dd 6 dup (NearNull)
PutOrRoutines	dd vPutORBitmap256,vPutORBitmap32k,vPutORBitmap64k,vPutORBitmap16m
	dd vPutORBitmap16m32,3 dup (NearNull)
	dd NearNull
	dd vPutORBitmapText
	dd 6 dup (NearNull)
GetRoutines	dd vGetBitmap256,vGetBitmap32k,vGetBitmap64k,vGetBitmap16m
	dd vGetBitmap16m32,3 dup (NearNull)
	dd NearNull
	dd vGetBitmapText
	dd 6 dup (NearNull)


	efile
	end
1234

blitbit.asm - 源码说明

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