08649: Window scaling doesn't match resolution

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08649	Interface	Minor	Always	May 30, 2023, 18:04	Jun 2, 2023, 18:31

Tester	holub	View Status	Public	Platform	MAME (Self-compiled)
Assigned To		Resolution	No change required	OS	Linux (64-bit)
Status [?]	Closed			Driver
Version	0.254	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08649: Window scaling doesn't match resolution
Description	Defined window resolution doesn't scale precisely
Steps To Reproduce	mame spec128 -window -resolution 352x296
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems

Attached Files	spectrum_window.jpg (14,229 bytes) May 30, 2023, 18:04 Uploaded by holub
Attached Files	spectrum_splash.jpg (3,270 bytes) May 30, 2023, 18:05 Uploaded by holub

No.21473 cuavas Administrator May 30, 2023, 20:01	Do you need to use -nokeepaspect to make it stretch the layout to the window size?
No.21474 holub Tester May 30, 2023, 20:54 edited on: May 30, 2023, 23:54	Possibly but current behavior if quite non-intuitive. I use precise values of driver's resolution and get weird results. Even knowing that aspect ration is 4:3 it's hard to figure out what should be window size to get clear picture.
No.21490 cuavas Administrator Jun 1, 2023, 18:41	All -resolution does in combination with -window is set the initial window size. If you want to layout stretched non-proportionally to fill the window, you need to use -nokeepaspect as well. If the emulated system doesn’t have square pixels, it’s necessarily going to end up scaled “unevenly” unless you select a “pixel aspect” view in the Video Options menu. By default, it’s supposed to display the correct screen aspect ratio. Or as we like to say, Chun-Li is not supposed to be a fat chick. I don’t see how it’s behaving incorrectly.
No.21498 holub Tester Jun 2, 2023, 16:20	Yeah. Taking in consideration what resolution is resolution of display not driver I think we can close this.