Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
08543 Graphics Minor Always 23 days ago 18 days ago
Tester Cow View Status Public Platform MAME (Official Binary)
Assigned To Haze Resolution Fixed OS Windows 10/11 (64-bit)
Status [?] Resolved Driver
Version 0.251 Fixed in Version 0.252GIT Build 64-bit
Fixed in Git Commit d7a08de Github Pull Request #
Summary 08543: megablst and clones: Shield powerup aura on option is missing
Description The green powerup is supposed to have a glowing aura on the option the ship touched it with. This is missing entirely on MAME
Steps To Reproduce Play the game
Collect the Green sphere icon
Glowing aura around the option will not appear
Additional Information
Github Commit
Flags
Regression Version
Affected Sets / Systems megablst and clones
Attached Files
mp4 file icon Mame 2023.01.06 - 16.33.24.04 Trim-1.mp4 (3,894,901 bytes) 23 days ago Uploaded by Cow
Mega Blast
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Notes
3
User avatar
No.21000
Tafoid
Administrator
22 days ago
edited on: 22 days ago
I would say it is a minor graphic issue - I didn't see a regression checking some older builds (tested back to setname change between 0.136 and 0.137 with same behavior). Good to have noted, however. You can see it in the demonstration screen about 22-23 seconds in the ship picks up a green orb with the rear laser. You can also see this working on the PCB recorded video.
User avatar
No.21001
Haze
Senior Tester
21 days ago
in the machine config, add the 'partial_buffer_delayed' bit here

MCFG_VIDEO_START_OVERRIDE(taitof2_state,megab)
m_screen->set_screen_update(FUNC(taitof2_state::screen_update_pri));
m_screen->screen_vblank().set(FUNC(taitof2_state::screen_vblank_partial_buffer_delayed));

the orbs will appear.

most of the other games in the driver have this set, but this one doesn't, so I don't know if it causes other issues elsewhere in the game. there's a big blurb in the driver about how the games handle sprites and why sometimes it's needed (Taito hardware is not well understood)
User avatar
No.21002
Haze
Senior Tester
21 days ago
(also since it acts as an indicator to how much shield you have left I'd say this was actually a major glitch, the game is basically broken without it showing)