WebSVN – Kolibri OS – Blame – /kernel/trunk/video/vesa12.inc

Rev	Author	Line No.	Line
431	serge	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
		3	;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
		4	;; Distributed under terms of the GNU General Public License ;;
		5	;; ;;
		6	;; VESA12.INC ;;
		7	;; ;;
		8	;; Vesa 1.2 functions for MenuetOS ;;
		9	;; ;;
		10	;; Copyright 2002 Ville Turjanmaa ;;
		11	;; ;;
		12	;; quickcode@mail.ru - bankswitch for S3 cards ;;
		13	;; ;;
		14	;; See file COPYING for details ;;
		15	;; ;;
		16	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1	ha	17
593	mikedld	18	$Revision: 593 $
1	ha	19
593	mikedld	20
1	ha	21	; A complete video driver should include the following types of function
		22	;
		23	; Putpixel
		24	; Getpixel
		25	;
		26	; Drawimage
		27	; Drawbar
		28	;
		29	; Drawbackground
		30	;
		31	;
		32	; Modifying the set_bank -function is mostly enough
		33	; for different Vesa 1.2 setups.
		34
5	halyavin	35	;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
		36	; set_bank for Trident videocards, work on Trident 9440
		37	; modified by Mario79
		38	;set_bank:
		39	;cli
381	serge	40	;cmp al,[BANK_RW]
5	halyavin	41	;je retsb
381	serge	42	;mov [BANK_RW],al
5	halyavin	43	;push dx
		44	;mov dx,3D8h
		45	;out dx,al
		46	;pop dx
		47	;retsb:
		48	;sti
		49	;ret
1	ha	50
5	halyavin	51
		52	;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
		53	; set_bank for S3 videocards, work on S3 ViRGE PCI (325)
379	serge	54	; modified by kmeaw
		55	set_bank:
102	poddubny	56	pushfd
379	serge	57	cli
381	serge	58	cmp al,[BANK_RW]
379	serge	59	je retsb
381	serge	60	mov [BANK_RW],al
379	serge	61	push ax
		62	push dx
		63	push cx
		64	mov cl, al
		65	mov dx, 0x3D4
		66	mov al, 0x38
1	ha	67	out dx, al ;CR38 Register Lock 1 ;Note: Traditionally 48h is used to
		68	;unlock and 00h to lock
379	serge	69	inc dx
		70	mov al, 0x48
1	ha	71	out dx, al ;3d5 -?
379	serge	72	dec dx
		73	mov al, 0x31
1	ha	74	out dx, al ;CR31 Memory Configuration Register
		75	;0 Enable Base Address Offset (CPUA BASE). Enables bank operation if set, ;disables if clear.
		76	;4-5 Bit 16-17 of the Display Start Address. For the 801/5,928 see index 51h,
		77	;for the 864/964 see index 69h.
		78
379	serge	79	inc dx
		80	in al, dx
		81	dec dx
		82	mov ah, al
		83	mov al, 0x31
		84	out dx, ax
		85	mov al, ah
		86	or al, 9
		87	inc dx
		88	out dx, al
		89	dec dx
		90	mov al, 0x35
1	ha	91	out dx, al ;CR35 CRT Register Lock
379	serge	92	inc dx
		93	in al, dx
		94	dec dx
		95	and al, 0xF0
		96	mov ch, cl
		97	and ch, 0x0F
		98	or ch, al
		99	mov al, 0x35
		100	out dx, al
		101	inc dx
		102	mov al, ch
		103	out dx, ax
		104	dec dx
1	ha	105	mov al, 0x51 ;Extended System Control 2 Register
379	serge	106	out dx, al
		107	inc dx
		108	in al, dx
		109	dec dx
		110	and al, 0xF3
		111	shr cl, 2
		112	and cl, 0x0C
		113	or cl, al
		114	mov al, 0x51
		115	out dx, al
		116	inc dx
		117	mov al, cl
		118	out dx, al
		119	dec dx
		120	mov al, 0x38
		121	out dx, al
		122	inc dx
		123	xor al, al
		124	out dx, al
		125	dec dx
		126	pop cx
		127	pop dx
		128	pop ax
		129	retsb:
102	poddubny	130	popfd
1	ha	131	ret
		132
		133	;Set bank function for Intel 810/815 chipsets
		134	; ***Modified by Protopopius, Russia.***
		135	; ******* http://menuetos.hut.ru ************
		136	; ************************************************
		137	;
		138	;set_bank:
		139	;cli
381	serge	140	;cmp al,[BANK_RW]
1	ha	141	;je retsb
381	serge	142	;mov [BANK_RW],al
1	ha	143	;push ax
		144	;push dx
		145	;mov dx,3CEh
		146	;mov ah,al ; Save value for later use
		147	;mov al,10h ; Index GR10 (Address Mapping)
		148	;out dx,al ; Select GR10
		149	;inc dl
		150	;mov al,3 ; Set bits 0 and 1 (Enable linear page mapping)
		151	;out dx,al ; Write value
		152	;dec dl
		153	;mov al,11h ; Index GR11 (Page Selector)
		154	;out dx,al ; Select GR11
		155	;inc dl
		156	;mov al,ah ; Write address
		157	;out dx,al ; Write the value
		158	;pop dx
		159	;pop ax
		160	;retsb:
		161	;sti
		162	;ret
		163
		164	;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!}
		165
		166	;set_bank:
		167	; cli
381	serge	168	; cmp al,[BANK_RW]
1	ha	169	; je retsb
381	serge	170	; mov [BANK_RW],al
1	ha	171	; push ax
		172	; push dx
		173	; mov ah,al
		174	; mov dx,0x03D4
		175	; mov al,0x39
		176	; out dx,al
		177	; inc dl
		178	; mov al,0xA5
		179	; out dx,al
		180	; dec dl
		181	; mov al,6Ah
		182	; out dx,al
		183	; inc dl
		184	; mov al,ah
		185	; out dx,al
		186	; dec dl
		187	; mov al,0x39
		188	; out dx,al
		189	; inc dl
		190	; mov al,0x5A
		191	; out dx,al
		192	; dec dl
		193	; pop dx
		194	; pop ax
		195	;
		196	; retsb:
		197	; ret
		198
		199
		200	vesa12_drawbackground:
		201
		202	call [disable_mouse]
		203
		204	push eax
		205	push ebx
		206	push ecx
		207	push edx
		208
		209	xor edx,edx
527	diamond	210	mov eax,dword[BgrDataWidth]
		211	mov ebx,dword[BgrDataHeight]
1	ha	212	mul ebx
		213	mov ebx,3
		214	mul ebx
		215	mov [imax],eax
115	poddubny	216	mov eax,[draw_data+32+RECT.left]
		217	mov ebx,[draw_data+32+RECT.top]
1	ha	218	mov edi,0 ;no force
		219
		220	v12dp3:
		221
		222	push eax
		223	push ebx
		224
527	diamond	225	cmp [BgrDrawMode],dword 1 ; tiled background
1	ha	226	jne no_vesa12_tiled_bgr
		227
		228	push edx
		229
		230	xor edx,edx
527	diamond	231	div dword [BgrDataWidth]
1	ha	232
527	diamond	233	push edx
1	ha	234	mov eax,ebx
		235	xor edx,edx
527	diamond	236	div dword [BgrDataHeight]
1	ha	237	mov ebx,edx
		238	pop eax
		239
		240	pop edx
		241
		242	no_vesa12_tiled_bgr:
		243
527	diamond	244	cmp [BgrDrawMode],dword 2 ; stretched background
1	ha	245	jne no_vesa12_stretched_bgr
		246
		247	push edx
		248
527	diamond	249	mul dword [BgrDataWidth]
381	serge	250	mov ecx,[ScreenWidth]
1	ha	251	inc ecx
		252	div ecx
		253
		254	push eax
		255	mov eax,ebx
527	diamond	256	mul dword [BgrDataHeight]
381	serge	257	mov ecx,[ScreenHeight]
1	ha	258	inc ecx
		259	div ecx
		260	mov ebx,eax
		261	pop eax
		262
		263	pop edx
		264
		265	no_vesa12_stretched_bgr:
		266
		267
527	diamond	268	mov esi,ebx
		269	imul esi, dword [BgrDataWidth]
1	ha	270	add esi,eax
527	diamond	271	lea esi,[esi*3]
469	serge	272	add esi,[img_background] ;IMG_BACKGROUND
1	ha	273	pop ebx
		274	pop eax
		275
		276	v12di4:
		277
527	diamond	278	mov cl,[esi+2]
		279	shl ecx,16
		280	mov cx,[esi]
1	ha	281	pusha
		282	mov esi,eax
		283	mov edi,ebx
381	serge	284	mov eax,[ScreenWidth]
1	ha	285	add eax,1
		286	mul ebx
527	diamond	287	cmp [eax+esi+WinMapAddress],byte 1
1	ha	288	jnz v12nbgp
381	serge	289	mov eax,[BytesPerScanLine]
1	ha	290	mov ebx,edi
		291	mul ebx
		292	add eax,esi
		293	add eax,esi
		294	add eax,esi
381	serge	295	cmp [ScreenBPP],byte 24
1	ha	296	jz v12bgl3
		297	add eax,esi
		298
		299	v12bgl3:
		300
		301	push ebx
		302	push eax
		303
381	serge	304	sub eax,[LFBAddress]
1	ha	305
		306	shr eax,16
		307	call set_bank
		308	pop eax
		309	and eax,65535
381	serge	310	add eax,VGABasePtr
1	ha	311	pop ebx
		312
		313	mov [eax],cx
		314	add eax,2
		315	shr ecx,16
		316	mov [eax],cl
		317	sti
		318
		319	v12nbgp:
		320
		321	popa
		322	add esi,3
		323	inc eax
115	poddubny	324	cmp eax,[draw_data+32+RECT.right]
1	ha	325	jg v12nodp31
		326	jmp v12dp3
		327
		328	v12nodp31:
		329
115	poddubny	330	mov eax,[draw_data+32+RECT.left]
1	ha	331	inc ebx
115	poddubny	332	cmp ebx,[draw_data+32+RECT.bottom]
1	ha	333	jg v12dp4
		334	jmp v12dp3
		335
		336	v12dp4:
		337
		338	pop edx
		339	pop ecx
		340	pop ebx
		341	pop eax
		342	ret
		343
		344
		345	vesa12_drawbar:
		346
		347	call [disable_mouse]
		348
		349	;; mov [novesachecksum],dword 0
		350	sub edx,ebx
		351	sub ecx,eax
		352	push esi
		353	push edi
		354	push eax
		355	push ebx
		356	push ecx
		357	push edx
379	serge	358	mov ecx,[TASK_BASE]
115	poddubny	359	add eax,[ecx-twdw+WDATA.box.left]
		360	add ebx,[ecx-twdw+WDATA.box.top]
1	ha	361	push eax
		362	mov eax,ebx ; y
381	serge	363	mov ebx,[BytesPerScanLine]
1	ha	364	mul ebx
		365	pop ecx
		366	add eax,ecx ; x
		367	add eax,ecx
		368	add eax,ecx
381	serge	369	cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ? - x start
1	ha	370	jz dbpi2412
		371	add eax,ecx
		372
		373	dbpi2412:
		374
381	serge	375	add eax,[LFBAddress]
1	ha	376	mov edi,eax
		377
		378	; x size
		379
		380	mov eax,[esp+4] ; [esp+6]
		381	mov ecx,eax
		382	add ecx,eax
		383	add ecx,eax
381	serge	384	cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ? - x size
1	ha	385	jz dbpi24312
		386	add ecx,eax
		387
		388	dbpi24312:
		389
		390	mov ebx,[esp+0]
		391
		392	; check limits ?
		393
		394	push eax
		395	push ecx
379	serge	396	mov eax,[TASK_BASE]
		397	mov ecx,[eax+draw_data-CURRENT_TASK+RECT.left]
1	ha	398	cmp ecx,0
		399	jnz dbcblimitlset12
379	serge	400	mov ecx,[eax+draw_data-CURRENT_TASK+RECT.top]
1	ha	401	cmp ecx,0
		402	jnz dbcblimitlset12
379	serge	403	mov ecx,[eax+draw_data-CURRENT_TASK+RECT.right]
381	serge	404	cmp ecx,[ScreenWidth]
1	ha	405	jnz dbcblimitlset12
379	serge	406	mov ecx,[eax+draw_data-CURRENT_TASK+RECT.bottom]
381	serge	407	cmp ecx,[ScreenHeight]
1	ha	408	jnz dbcblimitlset12
		409	pop ecx
		410	pop eax
		411	push dword 0
		412	jmp dbcblimitlno12
		413
		414	dbcblimitlset12:
		415
		416	pop ecx
		417	pop eax
		418	push dword 1
		419
		420	dbcblimitlno12:
		421
381	serge	422	cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ?
1	ha	423	jz dbpi24bit12
		424	jmp dbpi32bit12
		425
		426
		427	; DRAWBAR 24 BBP
		428
		429
		430	dbpi24bit12:
		431
		432	push eax
		433	push ebx
		434	push edx
		435	mov eax,ecx
		436	mov ebx,3
		437	div ebx
		438	mov ecx,eax
		439	pop edx
		440	pop ebx
		441	pop eax
		442	cld
		443
		444	dbnewpi12:
		445
		446	push ebx
		447	push edi
		448	push ecx
		449
		450	xor edx,edx
		451	mov eax,edi
381	serge	452	sub eax,[LFBAddress]
1	ha	453	mov ebx,3
		454	div ebx
		455	add eax,WinMapAddress
379	serge	456	mov ebx,[CURRENT_TASK]
1	ha	457	cld
		458
		459	dbnp2412:
		460
		461	mov dl,[eax]
		462	push eax
		463	push ecx
		464	cmp dl,bl
		465	jnz dbimp24no12
		466	cmp [esp+5*4],dword 0
		467	jz dbimp24yes12
		468	; call dbcplimit
		469	; jnz dbimp24no12
		470
		471	dbimp24yes12:
		472
		473	push edi
		474	mov eax,edi
381	serge	475	sub eax,[LFBAddress]
1	ha	476	shr eax,16
		477	call set_bank
		478	and edi,0xffff
381	serge	479	add edi,VGABasePtr
1	ha	480	mov eax,[esp+8+3*4+16+4+4]
		481	stosw
		482	shr eax,16
		483	stosb
		484	sti
		485	pop edi
		486	add edi,3
		487	pop ecx
		488	pop eax
		489	inc eax
		490	loop dbnp2412
		491	jmp dbnp24d12
		492
		493	dbimp24no12:
		494
		495	pop ecx
		496	pop eax
		497	cld
		498	add edi,3
		499	inc eax
		500	loop dbnp2412
		501
		502	dbnp24d12:
		503
		504	mov eax,[esp+3*4+16+4]
		505	test eax,0x80000000
		506	jz nodbgl2412
		507	cmp al,0
		508	jz nodbgl2412
		509	dec eax
		510	mov [esp+3*4+16+4],eax
		511
		512	nodbgl2412:
		513
		514	pop ecx
		515	pop edi
		516	pop ebx
381	serge	517	add edi,[BytesPerScanLine]
1	ha	518	dec ebx
		519	jz dbnonewpi12
		520	jmp dbnewpi12
		521
		522	dbnonewpi12:
		523
		524	add esp,7*4
		525
		526	ret
		527
		528
		529	; DRAWBAR 32 BBP
		530
		531
		532	dbpi32bit12:
		533
		534	cld
		535	shr ecx,2
		536
		537	dbnewpi3212:
		538
		539	push ebx
		540	push edi
		541	push ecx
		542
		543	mov eax,edi
381	serge	544	sub eax,[LFBAddress]
1	ha	545	shr eax,2
		546	add eax,WinMapAddress
379	serge	547	mov ebx,[CURRENT_TASK]
1	ha	548	cld
		549
		550	dbnp3212:
		551
		552	mov dl,[eax]
		553	push eax
		554	push ecx
		555	cmp dl,bl
		556	jnz dbimp32no12
		557	cmp [esp+5*4],dword 0
		558	jz dbimp32yes12
		559	; call dbcplimit
		560	; jnz dbimp32no12
		561
		562	dbimp32yes12:
		563
		564	push edi
		565	mov eax,edi
381	serge	566	sub eax,[LFBAddress]
1	ha	567	shr eax,16
		568	call set_bank
		569	and edi,0xffff
381	serge	570	add edi,VGABasePtr
1	ha	571	mov eax,[esp+8+3*4+16+4+4]
		572	stosw
		573	shr eax,16
		574	stosb
		575	sti
		576	pop edi
		577	add edi,4
		578	inc ebp
		579	pop ecx
		580	pop eax
		581	inc eax
		582	loop dbnp3212
		583	jmp dbnp32d12
		584
		585	dbimp32no12:
		586
		587	pop ecx
		588	pop eax
		589	inc eax
		590	add edi,4
		591	inc ebp
		592	loop dbnp3212
		593
		594	dbnp32d12:
		595
		596	mov eax,[esp+12+16+4]
		597	test eax,0x80000000
		598	jz nodbgl3212
		599	cmp al,0
		600	jz nodbgl3212
		601	dec eax
		602	mov [esp+12+16+4],eax
		603
		604	nodbgl3212:
		605
		606	pop ecx
		607	pop edi
		608	pop ebx
381	serge	609	add edi,[BytesPerScanLine]
1	ha	610	dec ebx
		611	jz nodbnewpi3212
		612	jmp dbnewpi3212
		613
		614	nodbnewpi3212:
		615
		616	add esp,7*4
		617	ret
		618
		619
		620	Vesa12_putpixel24:
		621
		622	mov edi,eax ; x
		623	mov eax,ebx ; y
		624	lea edi,[edi+edi*2]
381	serge	625	mov ebx,[BytesPerScanLine]
1	ha	626	mul ebx
		627	add edi,eax
		628	mov eax,edi
		629	shr eax,16
		630	call set_bank
		631	and edi,65535
381	serge	632	add edi,VGABasePtr
1	ha	633	mov eax,[esp+28]
		634	stosw
		635	shr eax,16
		636	mov [edi],al
		637	sti
		638	ret
		639
		640
		641
		642	Vesa12_putpixel32:
		643
		644	mov edi,eax ; x
		645	mov eax,ebx ; y
		646	shl edi,2
381	serge	647	mov ebx,[BytesPerScanLine]
1	ha	648	mul ebx
		649	add edi,eax
		650	mov eax,edi
		651	shr eax,16
		652	call set_bank
		653	and edi,65535
381	serge	654	add edi,VGABasePtr
1	ha	655	mov ecx,[esp+28]
		656	mov [edi],ecx
		657	sti
		658	ret
		659
		660
		661	Vesa12_getpixel24:
		662
		663	mov edi,eax ; x
		664	mov eax,ebx ; y
		665	lea edi,[edi+edi*2]
381	serge	666	mov ebx,[BytesPerScanLine]
1	ha	667	mul ebx
		668	add edi,eax
		669	mov eax,edi
		670	shr eax,16
		671	call set_bank
		672	and edi,65535
381	serge	673	add edi,VGABasePtr
1	ha	674	mov ecx,[edi]
		675	and ecx,255256256+255*256+255
		676	sti
		677	ret
		678
		679
		680	Vesa12_getpixel32:
		681
		682	mov edi,eax ; x
		683	mov eax,ebx ; y
		684	shl edi,2
381	serge	685	mov ebx,[BytesPerScanLine]
1	ha	686	xor edx,edx
		687	mul ebx
		688	add edi,eax
		689	mov eax,edi
		690	shr eax,16
		691	call set_bank
		692	and edi,65535
381	serge	693	add edi,VGABasePtr
1	ha	694	mov ecx,[edi]
		695	and ecx,255256256+255*256+255
		696	sti
		697
		698	ret
		699
		700
		701
		702	vesa12_putimage:
283	diamond	703	; ebx = pointer to image
		704	; ecx = size [x\|y]
		705	; edx = coordinates [x\|y]
		706	; ebp = pointer to 'get' function
		707	; esi = pointer to 'init' function
		708	; edi = parameter for 'get' function
1	ha	709
		710	; mov ebx,image
		711	; mov ecx,320*65536+240
		712	; mov edx,20*65536+20
		713
		714	call [disable_mouse]
		715
		716	mov [novesachecksum],dword 0
		717	push esi
		718	push edi
		719	push eax
		720	push ebx
		721	push ecx
		722	push edx
		723	movzx eax,word [esp+2]
		724	movzx ebx,word [esp+0]
379	serge	725	mov ecx,[TASK_BASE]
115	poddubny	726	add eax,[ecx-twdw+WDATA.box.left]
		727	add ebx,[ecx-twdw+WDATA.box.top]
1	ha	728	push eax
		729	mov eax,ebx ; y
381	serge	730	mul dword [BytesPerScanLine]
1	ha	731	pop ecx
		732	add eax,ecx ; x
		733	add eax,ecx
		734	add eax,ecx
381	serge	735	cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ? - x start
1	ha	736	jz pi2412
		737	add eax,ecx
		738
		739	pi2412:
		740
381	serge	741	add eax,[LFBAddress]
1	ha	742	mov edi,eax
		743
		744	; x size
		745
283	diamond	746	movzx ecx,word [esp+6]
1	ha	747
		748	mov esi,[esp+8]
		749	movzx ebx,word [esp+4]
		750
		751	; check limits while draw ?
		752
		753	push ecx
379	serge	754	mov eax,[TASK_BASE]
		755	cmp dword [eax+draw_data-CURRENT_TASK+RECT.left], 0
1	ha	756	jnz dbcblimitlset212
379	serge	757	cmp dword [eax+draw_data-CURRENT_TASK+RECT.top], 0
1	ha	758	jnz dbcblimitlset212
379	serge	759	mov ecx,[eax+draw_data-CURRENT_TASK+RECT.right]
381	serge	760	cmp ecx,[ScreenWidth]
1	ha	761	jnz dbcblimitlset212
379	serge	762	mov ecx,[eax+draw_data-CURRENT_TASK+RECT.bottom]
381	serge	763	cmp ecx,[ScreenHeight]
1	ha	764	jnz dbcblimitlset212
		765	pop ecx
283	diamond	766	push 0
1	ha	767	jmp dbcblimitlno212
		768
		769	dbcblimitlset212:
		770
		771	pop ecx
283	diamond	772	push 1
1	ha	773
		774	dbcblimitlno212:
		775
381	serge	776	cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ?
283	diamond	777	jnz pi32bit12
1	ha	778
		779	pi24bit12:
		780
		781	newpi12:
		782
		783	push edi
		784	push ecx
		785	push ebx
		786
283	diamond	787	mov edx,edi
381	serge	788	sub edx,[LFBAddress]
1	ha	789	mov ebx,3
		790	div ebx
283	diamond	791	add edx,WinMapAddress
379	serge	792	mov ebx,[CURRENT_TASK]
283	diamond	793	mov bh,[esp+4*3]
1	ha	794
		795	np2412:
		796
283	diamond	797	cmp bl,[edx]
1	ha	798	jnz imp24no12
283	diamond	799	; mov eax,[esi]
		800	push dword [esp+4*3+20]
		801	call ebp
		802	; cmp bh,0
		803	; jz imp24yes12
1	ha	804	; call dbcplimit
		805	; jnz imp24no12
		806
		807	imp24yes12:
		808
283	diamond	809	push edi
1	ha	810	push eax
		811	mov eax,edi
381	serge	812	sub eax,[LFBAddress]
1	ha	813	shr eax,16
		814	call set_bank
283	diamond	815	pop eax
1	ha	816	and edi,0xffff
381	serge	817	add edi,VGABasePtr
283	diamond	818	mov [edi],ax
		819	shr eax,16
		820	mov [edi+2],al
1	ha	821	pop edi
		822
		823	imp24no12:
		824
283	diamond	825	inc edx
		826	; add esi,3
1	ha	827	add edi,3
		828	dec ecx
		829	jnz np2412
		830
		831	np24d12:
		832
		833	pop ebx
		834	pop ecx
		835	pop edi
		836
381	serge	837	add edi,[BytesPerScanLine]
314	diamond	838	add esi,[esp+32]
1	ha	839	dec ebx
283	diamond	840	jnz newpi12
1	ha	841
		842	nonewpi12:
		843
283	diamond	844	pop eax edx ecx ebx eax edi esi
		845	xor eax, eax
		846	ret
1	ha	847
		848
		849	pi32bit12:
		850
		851	newpi3212:
		852
		853	push edi
		854	push ecx
		855	push ebx
		856
283	diamond	857	mov edx,edi
381	serge	858	sub edx,[LFBAddress]
283	diamond	859	shr edx,2
		860	add edx,WinMapAddress
379	serge	861	mov ebx,[CURRENT_TASK]
283	diamond	862	mov bh,[esp+4*3]
1	ha	863
		864	np3212:
		865
283	diamond	866	cmp bl,[edx]
1	ha	867	jnz imp32no12
283	diamond	868	; mov eax,[esi]
		869	push dword [esp+4*3+20]
		870	call ebp
		871	; cmp bh,0
		872	; jz imp32yes12
1	ha	873	; call dbcplimit
		874	; jnz imp32no12
		875
		876	imp32yes12:
		877
283	diamond	878	push edi
1	ha	879	push eax
		880	mov eax,edi
381	serge	881	sub eax,[LFBAddress]
1	ha	882	shr eax,16
		883	call set_bank
283	diamond	884	pop eax
1	ha	885	and edi,0xffff
381	serge	886	mov [edi+VGABasePtr],eax
1	ha	887	pop edi
		888
		889	imp32no12:
		890
283	diamond	891	inc edx
		892	; add esi,3
1	ha	893	add edi,4
		894	dec ecx
		895	jnz np3212
		896
		897	np32d12:
		898
		899	pop ebx
		900	pop ecx
		901	pop edi
		902
381	serge	903	add edi,[BytesPerScanLine]
1	ha	904	dec ebx
283	diamond	905	jnz newpi3212
1	ha	906
		907	nonewpi3212:
		908
283	diamond	909	pop eax edx ecx ebx eax edi esi
		910	xor eax, eax
		911	ret
1	ha	912
		913
		914	vesa12_read_screen_pixel:
		915
		916	and eax,0x3FFFFF
381	serge	917	cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ?
1	ha	918	jz v12rsp24
		919	mov edi,eax
		920	shl edi,2
		921	mov eax,edi
		922	shr eax,16
		923	call set_bank
		924	and edi,65535
381	serge	925	add edi,VGABasePtr
1	ha	926	mov eax,[edi]
		927	and eax,0x00ffffff
		928	ret
		929	v12rsp24:
		930
		931	imul eax,3
		932	mov edi,eax
		933	shr eax,16
		934	call set_bank
		935	and edi,65535
381	serge	936	add edi,VGABasePtr
1	ha	937	mov eax,[edi]
		938	and eax,0x00ffffff
		939	ret
		940

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(root)/kernel/trunk/video/vesa12.inc – Rev 593