07215: survarts: Some background graphics are misplaced

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
07215	Graphics	Minor	Always	Jan 29, 2019, 11:50	Jan 29, 2019, 16:15

Tester	haynor666	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows Vista/7/8 (64-bit)
Status [?]	Confirmed			Driver	seta/ssv.cpp
Version	0.205	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	07215: survarts: Some background graphics are misplaced
Description	Some background graphics from time to time are incorrectly placed on screen.
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	survarts

Attached Files	survarts0008.png (28,955 bytes) Jan 29, 2019, 11:50 Uploaded by haynor666

No.16087 Tafoid Administrator Jan 29, 2019, 14:50	Has happened for a long time (tested 0.120 and it still showed, but we used to have graphic imperfect flag on the driver). So, this was promoted (flag taken off) too soon, it looks like.
No.16088 Haze Senior Tester Jan 29, 2019, 16:15 edited on: Jan 30, 2019, 12:13	yeah, it's not 'misplaced' as such either, just one layer lagging behind the other. They probably need some kind of software controlled buffering implemented, the smaller sprites are out of sync with the larger tilemap sprites, so likely part of the list gets buffered based on a CPU trigger. the SSV video was missing many features until I did recent work on it, but I have noticed in the majority of games they do appear to need the regular sprites buffering by a frame in many cases, but I haven't found an appropriate trigger, and it doesn't seem automatic. further driver improvements are still on my todo list tho.

No.16087

Tafoid

Administrator

Jan 29, 2019, 14:50

Has happened for a long time (tested 0.120 and it still showed, but we used to have graphic imperfect flag on the driver).
So, this was promoted (flag taken off) too soon, it looks like.

No.16088

Haze

Senior Tester

Jan 29, 2019, 16:15

edited on: Jan 30, 2019, 12:13

yeah, it's not 'misplaced' as such either, just one layer lagging behind the other. They probably need some kind of software controlled buffering implemented, the smaller sprites are out of sync with the larger tilemap sprites, so likely part of the list gets buffered based on a CPU trigger.

the SSV video was missing many features until I did recent work on it, but I have noticed in the majority of games they do appear to need the regular sprites buffering by a frame in many cases, but I haven't found an appropriate trigger, and it doesn't seem automatic.

further driver improvements are still on my todo list tho.