04310: Bogus border color drawing with different than default video options

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
04310	Graphics	Minor	Always	Apr 16, 2011, 11:13	Apr 18, 2011, 19:39

Tester	Kale	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows Vista/7 (32-bit)
Status [?]	Acknowledged			Driver
Version	0.142	Fixed in Version		Build
		Fixed in Git Commit		Github Pull Request #

Summary	04310: Bogus border color drawing with different than default video options
Description	If you change horizontal / vertical video options settings, if the border color isn't black then the modified area gets drawn with black instead of a proper border color. Examples are Varth (MAME driver) and Commodore 64 (MESS driver)
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems

Attached Files	varth.png (32,960 bytes) Apr 16, 2011, 11:13 Uploaded by Kale
Attached Files	c64.png (66,909 bytes) Apr 16, 2011, 11:13 Uploaded by Kale

No.07379 Fujix Administrator Apr 16, 2011, 13:18	Do you mean those black stripes should be drawn with colors in the overscanned area if possible in the game? Or is it a -keepaspect issue?
No.07380 Kale Developer Apr 16, 2011, 18:20	The former, yes. Also, if you have to do "border color" you have to hack stuff around with current framework, with this and #4309 you could get that a lot more easily.
No.07381 Haze Senior Tester Apr 17, 2011, 20:53 edited on: Apr 17, 2011, 20:54	I'm sure I posted a reply here.. To me this is expected behavior. You're simply outputting the same bitmap onto the area of the surface you specify. MAME shouldn't be creating additional border areas, or expanding the area defined as visible by the driver in the first place. That's how the artwork system works, it composes a bunch of bitmaps onto the final surface, the screen display is just another one of those bitmaps. If you shrink the display, you're simply telling it that part of the surface isn't covered, so it shows through in black.
No.07383 Kale Developer Apr 18, 2011, 19:39	Well, guess it's not easy to find out a solution then ... for sure border color plays an important role in some systems (even Arcade ones in some places), and enlarging the visible area is ugly tbh.