02152: dbc, lhb, lhbv33c, xymg, wlcc: Some graphic characters missed during play

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
02152	Graphics	Minor	Always	Aug 23, 2008, 04:11	Aug 24, 2008, 01:32

Tester	dyq	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS
Status [?]	Confirmed			Driver	igs/igs011.cpp
Version	0.127	Fixed in Version		Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	02152: dbc, lhb, lhbv33c, xymg, wlcc: Some graphic characters missed during play
Description	There are totally three chances to view the graphic bugs during the game. The first is when you get Ippatsu (win immediately after geting Reach), two Chinese words (??? missed in the labelled area as seen in pic1. Another event is when you win a special round as Nine Lotus (?????, the last character missed as in pic2. The third one is when you win immediately after the round start, the character Sky(?) is missed in pic3. While we can find this character by debug as shown in pic4. I do not know why only these effects are missed, maybe the similar reason like the "5" missed on title snap as described by Luca. Most importantly, the issue stays in all related games other than dbc. Other four games in igs_blit.c like lhb and its clone, xymg and its clone do the same. However the arcades I played before do show the characters.
Steps To Reproduce	If you patiently watched xymg game's demo for about 10 mins, the game will show the event as in pic2, which snap is also attached here.
Additional Information	All associated games share some graphic roms. The bug has been in mame for a long time. igs_blit.c renamed to igs011.c in 0.135u1 affected set grtwall renamed to wlcc in 0.135u1 affected set lhba renamed to lhbv33c
Github Commit

Flags
Regression Version
Affected Sets / Systems	dbc, lhb, lhbv33c, xymg, wlcc

Attached Files	dbc_missed1.PNG (32,239 bytes) Aug 23, 2008, 04:11
	dbc_missed2.PNG (41,537 bytes) Aug 23, 2008, 04:11
	dbc_missed3.PNG (24,746 bytes) Aug 23, 2008, 04:12
	dbc_Tian Hu.PNG (25,570 bytes) Aug 23, 2008, 04:12
	xymg_demo.png (32,078 bytes) Aug 23, 2008, 04:12

No.02190 Fujix Administrator Aug 23, 2008, 14:08	I confirmed the xymg issue but others are impossible to win. Do you have cheat to confirm others?
No.02192 dyq Tester Aug 23, 2008, 17:31	The others are hard to reproduce unless you paly the game and meet the events. The driver does not support save status so no file can be uploaded.
No.02193 Fujix Administrator Aug 23, 2008, 17:53	I know. It is said that who won by Tian Huo runs out of luck and will die ;) We need a method to reproduce the bug not only for my confirmation but for the driver author to test them easily..
No.02195 dyq Tester Aug 24, 2008, 01:32	I find a new method to reproduce the first event(Ippatsu) easily. In grtwall, once you get yourself "Reach" and your rival has the tile you need. Using Donden function(Start key) then change the hand, give the tile out and the computer will win by Ron (actually is your previous hand). And you can see Ippatsu misssed on the list. For Tian Hu, it can only be realized by cheat (win by the game start). But the cheat function is not available now. For save status, I tried in grtwall after your Reach, but the computer does not give the same tiles after each loading.