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MAMEDEV Forum • How to multiply resolution?
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How to multiply resolution?

Posted: Sat Jun 12, 2021 7:52 pm
by Atario
Hello, everyone.

I'm trying to configure MAME to quadruple the source resolution of my Fairchild Channel F games, so the CRT filter looks right (the original console did this). I can't seem to get it to happen, though.

What's the right way to accomplish this?

Re: How to multiply resolution?

Posted: Sat Jun 19, 2021 11:52 am
by Pernod
Atario wrote:
Sat Jun 12, 2021 7:52 pm
I'm trying to configure MAME to quadruple the source resolution of my Fairchild Channel F games, so the CRT filter looks right (the original console did this). I can't seem to get it to happen, though.

What's the right way to accomplish this?
The channelf driver is currently outputting a video resolution of 102x58 which is not correct. The actual hardware duplicates pixels on the x-axis and repeats each scanline 4 times (5 for PAL) in the y-axis to produce an output of 204x232.

The emulation needs updating to produce the correct resolution.

Re: How to multiply resolution?

Posted: Sat Jun 19, 2021 1:46 pm
by Atario
Pernod wrote:
Sat Jun 19, 2021 11:52 am
The channelf driver is currently outputting a video resolution of 102x58 which is not correct. The actual hardware duplicates pixels on the x-axis and repeats each scanline 4 times (5 for PAL) in the y-axis to produce an output of 204x232.

The emulation needs updating to produce the correct resolution.
Should I file a bug ticket?

Re: How to multiply resolution?

Posted: Sat Jun 19, 2021 7:55 pm
by Pernod
Atario wrote:
Sat Jun 19, 2021 1:46 pm
Should I file a bug ticket?
Yes, it should be logged as a bug, though there's a chance I may have time to look at it before next release.

Re: How to multiply resolution?

Posted: Tue Jun 22, 2021 1:46 am
by Atario
Pernod wrote:
Sat Jun 19, 2021 7:55 pm
Yes, it should be logged as a bug, though there's a chance I may have time to look at it before next release.
Bug logged!

https://mametesters.org/view.php?id=8012

Re: How to multiply resolution?

Posted: Sun Jun 27, 2021 11:50 am
by Robert
Problem fixed !!

Re: How to multiply resolution?

Posted: Mon Jun 28, 2021 12:55 am
by Atario
Robert wrote:
Sun Jun 27, 2021 11:50 am
Problem fixed !!
👍