Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
08091 Graphics Minor Always 30 days ago 30 days ago
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 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
Regression Version
Affected Sets / Systems aliensyn
Attached Files
There are no relationship linked to this issue.
User avatar
30 days ago
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.
User avatar
30 days ago
The first block panning in is corrupted while it's moving. This is the same on the PCB, so BTANB:

The 1-frame disappearing of the blocks was 'accidentally' fixed by me I think, over here:
User avatar
30 days ago
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"