06668: mhavoc, mhavoc2, mhavocp, mhavocrv: Some graphics disappear or are not drawn at all

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06668	Graphics	Major	Always	Aug 26, 2017, 03:59	Feb 16, 2021, 04:36

Tester	mmarino4	View Status	Public	Platform	MAME (Official Binary)
Assigned To	Robbbert	Resolution	Fixed	OS	Windows Vista/7/8 (64-bit)
Status [?]	Resolved			Driver	atari/mhavoc.cpp
Version	0.188	Fixed in Version	0.229	Build	64-bit
		Fixed in Git Commit	96e0293	Github Pull Request #

Summary	06668: mhavoc, mhavoc2, mhavocp, mhavocrv: Some graphics disappear or are not drawn at all
Description	Certain graphics such as enemy ships in the first level will briefly disappear then reappear. Sometimes this can last longer than other times. The "maze" levels (not the on-foot levels) are basically unplayable as a substantial amount of the graphics are not visible most of the time. See attached picture comparing that level in 0.171 to 0.188. The issue started occurring between 0.171 and 0.177.
Steps To Reproduce	Start a game and pay attention to the enemy ships. You will see them often disappear for a moment. Get to the maze level shown in the attached picture and most of the graphics will not appear most of the time (see photo).
Additional Information	I did not test any of the other versions, only mhavoc (rev 3).
Github Commit

Flags
Regression Version	0.174
Affected Sets / Systems	mhavoc, mhavoc2, mhavocp, mhavocrv

Attached Files	mh.jpg (80,776 bytes) Aug 26, 2017, 03:59 Uploaded by mmarino4 Comparison of "maze" level in MAME 0.171 and 0.188

No.14142 Tafoid Administrator Aug 27, 2017, 15:36	Pretty sure it has to do with the new way vector graphics are rendered by default. This game in particular doesn't seem to like it and I noticed many bits disappearing entirely even before the maze section you have detailed.
No.14143 izius Tester Aug 27, 2017, 21:00	The regression version is 0.174 for mhavoc, mhavoc2, mhavocp and mhavocrv. For alphaone and alphaonea, they already had this problem since the 0.111u1 - 0.112 cycle (not sure which exact version, I don't have them to test). But in 0.174 they got worse - in the space battle section, nothing is drawn except your ship and the enemy base. The base reactor section seems OK.
No.14911 izius Tester Apr 2, 2018, 16:40	Finally found the 0.111 betas, needed to complete my tests in the previous note. Alphaone and alphaonea have this bug since 0.111u5, that's their exact regression. I hope this can be useful.
No.17398 Zaghadka Tester Feb 10, 2020, 19:20	Still present in 0.218.
No.18463 Robbbert Senior Tester Feb 14, 2021, 04:19	Fixed in https://github.com/mamedev/mame/commit/96e029343bc4147e38e0625a48280e3f1ed6c326
No.18464 Fujix Administrator Feb 14, 2021, 06:02	I'm adding a "Fixed in commit" field to Testers.