06783: Lines across the screen appears if GLSL and prescale = 1

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06783	Graphics	Minor	Always	Dec 4, 2017, 22:26	Dec 6, 2017, 18:40

Tester	wuemura	View Status	Public	Platform	MAME (Self-compiled)
Assigned To		Resolution	Open	OS	Linux (64-bit)
Status [?]	Confirmed			Driver
Version	0.192	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	06783: Lines across the screen appears if GLSL and prescale = 1
Description	If GLSL and the prescale = 1 are enabled at the same time is possible to see lines across the screen braking the graphics, this is not direct related with machines because the same defect happens on different machines. If prescale =2 or 3 the defect is gone.
Steps To Reproduce	./mame64 -video opengl -window -maximize -filter -prescale 1 -gl_glsl sf2ce If you remove "-prescale 1" or "-gl_glsl" the defect vanishes, it only happens if this options are used at the same time.
Additional Information	It only affect Linux, Windows doesn't have this issue.
Github Commit

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Regression Version
Affected Sets / Systems

Attached Files	mamebug-01.png (872,202 bytes) Dec 4, 2017, 22:26 Uploaded by wuemura
	mamebug-02.png (498,001 bytes) Dec 4, 2017, 22:27 Uploaded by wuemura
	mamebug-03.png (1,119,841 bytes) Dec 4, 2017, 22:28 Uploaded by wuemura

No.14491 Tafoid Administrator Dec 6, 2017, 12:07 edited on: Dec 6, 2017, 12:08	AFAIK, you can't use opengl/glsl sliders if prescale is greater than 1. Anyway, the behaviour seems confirmed, but not I'm sure what can be done about it. Tested Windows: -opengl -gl_-gl_glsl
No.14492 wuemura Viewer Dec 6, 2017, 18:40	I'm just reporting the behavior, besides "-window" and "-maximize" I don't use any of the other switches. I was helping a user out that uses this settings and this behavior started. It could be a good idea to block options that it's not suppose to be used together, like if enabled it will automatically disable the other, or will be faded out and vice versa. Specially if no developer is available to fix this now, it could prevent new reports in the future. Thank you @Tafoid.

No.14491

Tafoid

Administrator

Dec 6, 2017, 12:07

edited on: Dec 6, 2017, 12:08

AFAIK, you can't use opengl/glsl sliders if prescale is greater than 1.
Anyway, the behaviour seems confirmed, but not I'm sure what can be done about it.

Tested Windows: -opengl -gl_-gl_glsl

No.14492

wuemura

Viewer

Dec 6, 2017, 18:40

I'm just reporting the behavior, besides "-window" and "-maximize" I don't use any of the other switches. I was helping a user out that uses this settings and this behavior started.

It could be a good idea to block options that it's not suppose to be used together, like if enabled it will automatically disable the other, or will be faded out and vice versa. Specially if no developer is available to fix this now, it could prevent new reports in the future.

Thank you @Tafoid.