06180: genesis [castlill and possibly castlillj]: Certain sprites are wrongly positioned

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06180	Graphics	Minor	Always	Apr 17, 2016, 00:08	3 hours ago

Tester	StHiryu	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows (x64)
Status [?]	Confirmed			Driver	sega/mdconsole.cpp
Version	0.172	Fixed in Version		Build	x64
		Fixed in Git Commit		Github Pull Request #

Summary	06180: genesis [castlill and possibly castlillj]: Certain sprites are wrongly positioned
Description	Making a longplay I've noticed that some sprites override others and don't hide when they have to...So far i've found: Stage 1-4 --> The floating ghost override the bottom-score panel Stage 4-2 --> The floating cakes override the bottom-score panel and the milk-water The rotating biscuits override the bottom-score panel Not checked the castle (last stage) but maybe solving the problem will solve all the misplaced sprites on the game
Steps To Reproduce	At stage 1-4 the dark forest, jump the ghost until some of then stay at the bottom of the screen At stage 4-2 the sweet world, just play and you'll notice the problem easily
Additional Information	Upload of some snapshots of my longplay: issue1-4,jpg at issue.rar Attached a youtube link of another longplay where all works fine: Min 4:12 --> Stage 1-4 Min 18:06 --> Stage 4-2
Github Commit

Flags	Verified with Original
Regression Version
Affected Sets / Systems	genesis [castlill and possibly castlillj]

Attached Files	issue.rar (857,256 bytes) Apr 17, 2016, 00:08 Uploaded by StHiryu Snapshots of the detected issues at my longplay
Attached Files	sor.png (23,120 bytes) May 30, 2016, 00:08 Uploaded by StHiryu Streets of Rage sprite masking problem

No.12537 Haze Senior Tester Apr 19, 2016, 21:01 edited on: Apr 19, 2016, 21:02	yeah, the sprite masking algorithm we have isn't right, not much is broken, but a handful of cases are. the correct one is quite well documented at this point.
No.12734 StHiryu Tester May 30, 2016, 00:07	Played Streets Of Rage (sor.zip), seems to suffer the same problem when the player character appears at the top of the screen, with the score behind of him... Attached sor.png
No.23862 StHiryu Tester 2 days ago	Seems fixed in Teradrive, but suppose it can be marked as resolved since still happen on the other megadrive/genesis based systems.
No.23869 Kale Developer 3 hours ago	Yeah, that's the idea: eventually the new core will replace the old one but there are still many things to be done before that happens (namely it's not yet tuned for PAL machines).