08091: aliensyn: Incorrect rendering on title screen.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08091	Graphics	Minor	Always	Sep 24, 2021, 17:33	Sep 24, 2021, 20:59

Tester	Yonah	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Bugs That Aren't Bugs	OS	Windows 10 (64-bit)
Status [?]	Resolved			Driver	sega/segas16b.cpp
Version	0.235	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08091: aliensyn: Incorrect rendering on title screen.
Description	On the title screen, several different tile layers slide onto the screen. In previous MAME versions, this effect is rendered flawlessly. Now they are corrupted. The first tile layer is shown with incorrect transparency until the final move. The other layers partially disappear for one frame before their final movement.
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	aliensyn

Attached Files

No.19281 jkburks Tester Sep 24, 2021, 17:56	I’m not seeing this at all. Have you tested this with a clean install or at least deleted your aliensyn nvram folder to see if that is causing the corruption? The screen background graphics that make up the parts of the title screen sequence appear randomly selected. If it only appears with some of the selections it would be helpful to have a screenshot of the corruption. I just watched the title sequence many times on aliensyn in MAME 0.235 and see no corruption or transparency issues. I paused the game just before the title sequence and used Shift + P to step through the paused frames and it all looks normal.
No.19282 hap Developer Sep 24, 2021, 20:41	The first block panning in is corrupted while it's moving. This is the same on the PCB, so BTANB: #t=56m35s The 1-frame disappearing of the blocks was 'accidentally' fixed by me I think, over here: https://mametesters.org/view.php?id=8065
No.19283 hap Developer Sep 24, 2021, 20:59	marked BTANB for the claim "The first tile layer is shown with incorrect transparency until the final move" I do not believe "In previous MAME versions, this effect is rendered flawlessly"