Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
08412 Color/Palette Minor Always 24 days ago 19 days ago
Tester ICEknight View Status Public Platform MAME (Official Binary)
Assigned To Resolution Bugs That Aren't Bugs OS Windows 10/11 (64-bit)
Status [?] Resolved Driver
Version 0.247 Fixed in Version Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 08412: pacmania and clones: Incorrect shading for Pac-Man's sprite?
Description Some of the shades present in Pac-Man's sprite are being assigned almost identical tones of yellow,, making it look less shaded than it really is. This can be seen when swapping palettes in MAME's graphics viewer.

Interestingly, the versions made for the Amiga, PlayStation (Namco Museum Vol. 5) and Game Boy Advance (Pac-Man Collection) do indeed make a good use of those shades.

Note that this may be a Bug That's Not A Bug, but might be worth investigating until it can be checked against a known legit PCB.
Steps To Reproduce -Load pacmania (or a clone)
-Wait for the Title Screen to show up.
-Press F4 to bring up the graphics editor.
-Press the small Enter key in the numeric keypad.
-Press left and right to change between palettes. Note that Pac-Man's sprite loses part of his shading when using his in-game "0" palette.
Additional Information The arcade version of Pac-Man has its default "Normal" brightness setting showing an unusually low contrast (at least in MAME), though this issue happens no matter its value.

In order to make the game's picture have more conventional contrast levels:
-Hold F1.
-A menu will appear, go to the "Brightness" option and set it to "High".
-Release F1.

(There seems to be no way of saving setings from the Service Mode)
Github Commit
Flags
Regression Version
Affected Sets / Systems pacmania and clones
Attached Files
png file icon 0000.png (11,381 bytes) 24 days ago Uploaded by ICEknight
MAME Normal brightness
ICEknight
png file icon 0000bright.png (11,368 bytes) 24 days ago Uploaded by ICEknight
MAME High brightness
ICEknight
png file icon 0000psx.png (11,911 bytes) 24 days ago Uploaded by ICEknight
PlayStation
ICEknight
png file icon 0001.png (5,820 bytes) 24 days ago Uploaded by ICEknight
MAME Normal brightness
ICEknight
png file icon 0001bright.png (5,878 bytes) 24 days ago Uploaded by ICEknight
MAME High brightness
ICEknight
png file icon 0001psx.png (5,725 bytes) 24 days ago Uploaded by ICEknight
PlayStation
ICEknight
png file icon 0002.png (7,864 bytes) 24 days ago Uploaded by ICEknight
MAME Normal brightness
ICEknight
png file icon 0002bright.png (7,866 bytes) 24 days ago Uploaded by ICEknight
MAME High brightness
ICEknight
png file icon 0002psx.png (8,419 bytes) 24 days ago Uploaded by ICEknight
PlayStation
ICEknight
png file icon mame normal.png (2,700 bytes) 24 days ago Uploaded by ICEknight
MAME Normal brightness
ICEknight
png file icon mame bright.png (2,701 bytes) 24 days ago Uploaded by ICEknight
MAME High brightness
ICEknight
png file icon amiga.png (2,108 bytes) 24 days ago Uploaded by ICEknight
Amiga
ICEknight
png file icon psx.png (2,520 bytes) 24 days ago Uploaded by ICEknight
PlayStation
ICEknight
png file icon sprite.png (883 bytes) 24 days ago Uploaded by ICEknight
Sprite shading as stored in arcade version
ICEknight
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Notes
4
User avatar
No.20515
ICEknight
Tester
22 days ago
edited on: 16 days ago
Ok, so I guess that Namco did just screw up. Real hardware seems to look similar to MAME, except for the presence of a border that's not emulated:
https://philwip.com/2018/07/20/pcb-repair-pac-mania-2/


Maybe that Brightness option they added calculates the colors wrong or something.
User avatar
No.20518
Tafoid
Administrator
22 days ago
So is this something that needs to be investigated or are you stating MAME matches up with PCB alright?
User avatar
No.20528
ICEknight
Tester
21 days ago
edited on: 21 days ago
Some direct verification of the brightness levels would be nice, but I think it can be marked as BTANB already.
User avatar
No.20531
Tafoid
Administrator
19 days ago
I'll mark as such, then.
If this needs to be looked at more in the future, the bug will remain in a open state able to be commented on.