06855: gtmr2: Graphic issue in ending sequence

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06855	Graphics	Minor	Always	Jan 25, 2018, 08:11	Nov 10, 2018, 17:36

Tester	NekoEd	View Status	Public	Platform	MAME (Self-compiled)
Assigned To		Resolution	Open	OS	Linux (64-bit)
Status [?]	Confirmed			Driver	kaneko/kaneko16.cpp
Version	0.193	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	06855: gtmr2: Graphic issue in ending sequence
Description	In gtmr2 (clones untested) there's a section of the background missing right at the beginning of the ending sequence. Check the attached screenshot and look at the left. There's a man waving a flag in a square void.
Steps To Reproduce	Beat the game, watch the left of the screen as soon as the ending sequence starts.
Additional Information	This may not be a MAME bug. Will require verification against the real thing. UPDATE: Verified with original.
Github Commit

Flags	Verified with Original
Regression Version
Affected Sets / Systems	gtmr2

Attached Files	0001.png (37,249 bytes) Jan 25, 2018, 08:11 Uploaded by NekoEd
	gtmr2.zip (96,831 bytes) Oct 17, 2018, 07:47 Uploaded by MetalGod
	gtmr2 (endings).zip (741,851 bytes) Oct 17, 2018, 20:33 Uploaded by MetalGod

No.14691 Haze Senior Tester Jan 28, 2018, 17:43	would be interesting to check if it's a sprite or a tilemap if it's a sprite we know Kaneko sometimes put extra sprite roms on certain revisions, that patch over the mask roms. it's possible this is missing one of those, or using the wrong ones (I haven't checked) because people assumed they were the same. or it could be they just forgot this scene when updating something.
No.15550 MetalGod Senior Tester Oct 17, 2018, 20:05 edited on: Oct 17, 2018, 20:39	It seems to be an emulation issue. I've done a lot of testing with this game and I've found out there's a wide variety of different ending sequence bugs, and they depend on the final circuit played + the chosen car. The bugs are not a random thing. I even tested the game in mame 0.123 and the ending bugs pertinent to a car + a circuit are the same as in mame 0.202, so it seems there's no regression. This error has always been there. Some combinations of car + circuit do not show any error. Stage 1, Jaguar B-Type (no glitches) Stage 2, Ferrari 250 GTO Stage 3, Ferrari 250 GTO Stage 3, Bugatti Type 59 Stage 4, Ferrari 250 GTO Stage 5, Ferrari 250 GTO Stage 6, Ferrari 250 GTO (no glitches) Stage 7, Ferrari 250 GTO Stage 8, Ferrari 250 GTO (no glitches) Stage 8, Porsche 550A (this is the reported glitch of this ticket)
No.15551 MetalGod Senior Tester Oct 17, 2018, 20:35	I've uploaded some savestates for 8 game endings (mame 0.202) The file is gtmr2 (endings).zip Previous uploaded file, gtmr2.zip could be deleted.
No.15770 Haze Senior Tester Nov 10, 2018, 17:36	this one is certainly odd. I thought maybe it was to do with the extra-non mask roms being loaded incorrectly (as in some other Kaneko games they load over part of the mask roms) but that isn't the case here. it literally just has the wrong tile values in RAM, like it doesn't properly copy the entire tilemap it needs and leaves things left from previous stages etc. which makes it look very much like a bug in the game. I wonder if it can be triggered on the original hardware, just none of the videos found cause it.