08230: gunlock, rayforcej, rayforce: Missing transparent shadows in Area 4

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08230	Graphics	Minor	Always	Feb 22, 2022, 21:21	Apr 15, 2024, 05:43

Tester	Fungi66	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows 10/11 (64-bit)
Status [?]	Confirmed			Driver	taito/taito_f3.cpp
Version	0.240	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08230: gunlock, rayforcej, rayforce: Missing transparent shadows in Area 4
Description	In Area 4, there are transparent shadows located in the background of the stage that are not present in MAME.
Steps To Reproduce	Play Gunlock/Rayforce and reach to Area 4.
Additional Information	Full Playthrough of Gunlock/Rayforce on a real Taito F3 board: Full Playthrough of Gunlock/Rayforce I did on MAME:
Github Commit

Flags	Verified with Original
Regression Version
Affected Sets / Systems	gunlock, rayforcej, rayforce

Attached Files	MAME.jpg (426,380 bytes) Feb 22, 2022, 21:21 Uploaded by Fungi66
Attached Files	PCB.jpg (342,582 bytes) Feb 22, 2022, 21:21 Uploaded by Fungi66

No.19835 Fujix Administrator Feb 23, 2022, 05:33	Taito F3 graphics is not perfect in many games.
No.22063 ywy Tester Apr 15, 2024, 05:43	ok i found. bit x8xx in section 6400 of line ram controls a palette offset effect, however, it seems to: - only affect playfield 4 (?) - respect the bpp of the tile (e.g. 4bpp tile gets +0x10, 6bpp gets +0x40) (??) - is masked by the layer beneath it (or only pf 1 maybe?) -- in rayforce, the effect is applied only to pixels where a hidden copy of one of the upper layers is. when there is no next 'real' layer, it affects every pixel (from hw testing) (???)

No.19835

Fujix

Administrator

Feb 23, 2022, 05:33

Taito F3 graphics is not perfect in many games.

No.22063

ywy

Tester

Apr 15, 2024, 05:43

ok i found.
bit x8xx in section 6400 of line ram controls a palette offset effect,
however, it seems to:
- only affect playfield 4 (?)
- respect the bpp of the tile (e.g. 4bpp tile gets +0x10, 6bpp gets +0x40) (??)
- is masked by the layer beneath it (or only pf 1 maybe?) -- in rayforce, the effect is applied only to pixels where a hidden copy of one of the upper layers is. when there is no next 'real' layer, it affects every pixel (from hw testing) (???)