05877: outrun and clones: Minor graphics error

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
05877	Graphics	Minor	Always	Mar 11, 2015, 07:17	Nov 10, 2020, 03:39

Tester	Machone	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows Vista/7/8 (64-bit)
Status [?]	Acknowledged			Driver	sega/segaorun.cpp
Version	0.159	Fixed in Version		Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	05877: outrun and clones: Minor graphics error
Description	There's a gap between certain objects and their shadows that is present on the pcb but is missing in MAME. The most obvious examples being the lower left tyre of the Ferrari and the bottom left of the palm trees, as shown in the accompanying pictures. It's easier to see on videos than static pictures, for example watch from around the 2 minute mark. The gap between the tyre and its shadow is pretty obvious.
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	outrun and clones

Attached Files	outrun3.jpg (194,742 bytes) Mar 11, 2015, 07:22 Uploaded by Machone

No.11504 Haze Senior Tester Mar 11, 2015, 10:15	yeah, it's been said before that some of the PCB revisions have a half-pixel offset between shadows and sprites, to emulate it we'd have to double the horizontal resolution of the output and work out exactly when it applies. nice to have a proper reference tho.
No.11800 Machone Tester Jun 28, 2015, 07:12	After checking lots of videos and various references, I've yet to see an Outrun machine without the gap! It also seems that it's at least one pixel wide. Thanks for the info though.
No.11993 abelardator2 Tester Aug 28, 2015, 21:40	Another video reference:
No.18144 StHiryu Tester Nov 10, 2020, 03:39	All the Out run versions I've seen have the gap present however, some console ports made by sega don't show that gap, so is likely Haze is right... -Saturn Outrun: -Dreamcast Outrun: