09073: dariusg, dariusgu, dariusgj, dariusgx: Explosion effect of the boss in Zone B has a graphical corruption

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
09073	Graphics	Minor	Always	Jan 7, 2025, 03:02	2 hours ago

Tester	jwillicvh	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows (x64)
Status [?]	Confirmed			Driver	taito/taito_f3.cpp
Version	0.273	Fixed in Version		Build	x64
		Fixed in Git Commit		Github Pull Request #

Summary	09073: dariusg, dariusgu, dariusgj, dariusgx: Explosion effect of the boss in Zone B has a graphical corruption
Description	The explosion for the boss in Zone B is incorrect to what it's supposed to appear as in the rest of the game, and on real hardware. Normally the ship would be visible colored correctly, and the particle effect of the explosion would be orange. As it is now both the ship, and the particle effect are all covered completely black.
Steps To Reproduce	Play Zone B of Darius Gaiden, and defeat the boss.
Additional Information	Footage of how it appears on real hardware (appears at 5:56) ?si=M539fZiQrGOw0kYU&t=356
Github Commit

Flags	Regression, Verified with Original
Regression Version	0.266
Affected Sets / Systems	dariusg, dariusgu, dariusgj, dariusgx

Attached Files	Timeline 1.mp4 (3,240,127 bytes) 5 hours ago Uploaded by jwillicvh Footage of Bug

No.22788 ywy Tester Jan 7, 2025, 16:11	[contributing layers] zone A boss explosion: [:fdp] [E] PF2: 0,1 (1) {pal: 28b/0, blend: c0/ff, prio: e/0} [:fdp] [D] SP0: 1,1 (0) {pal: 28b/1164, blend: c0/ff, prio: e/d} zone B boss explosion: [:fdp] [E] SP0: 1,1 (0) {pal: 1284/1284, blend: 0/ff, prio: e/e} [:fdp] [E] PF2: 0,1 (1) {pal: 1284/0, blend: 0/c0, prio: e/e} afterward: [:fdp] [E] SP0: 1,1 (0) {pal: 1284/1284, blend: a0/60, prio: e/e} [:fdp] [E] PF2: 0,1 (0) {pal: 1284/1284, blend: a0/60, prio: e/e} i see it... i think this is a mishandled case in unusual blending of priority conflicts also, notice how in the HW video, the sprites appear on top of and unblended with the BG, while in zone A the sprites are below the BG effect layer with transparency

No.22788

ywy

Tester

Jan 7, 2025, 16:11

[contributing layers]
zone A boss explosion:
[:fdp] [E] PF2: 0,1 (1) {pal: 28b/0, blend: c0/ff, prio: e/0}
[:fdp] [D] SP0: 1,1 (0) {pal: 28b/1164, blend: c0/ff, prio: e/d}

zone B boss explosion:
[:fdp] [E] SP0: 1,1 (0) {pal: 1284/1284, blend: 0/ff, prio: e/e}
[:fdp] [E] PF2: 0,1 (1) {pal: 1284/0, blend: 0/c0, prio: e/e}
afterward:
[:fdp] [E] SP0: 1,1 (0) {pal: 1284/1284, blend: a0/60, prio: e/e}
[:fdp] [E] PF2: 0,1 (0) {pal: 1284/1284, blend: a0/60, prio: e/e}

i see it... i think this is a mishandled case in unusual blending of priority conflicts
also, notice how in the HW video, the sprites appear on top of and unblended with the BG,
while in zone A the sprites are below the BG effect layer with transparency