webmsx overscan bug (border)

Por inchl

Resident (41)

imagem de inchl

02-08-2021, 11:52

While testing a new project in webmsx I noticed something strange.
Screen 6 in overscan mode displays the border of the last 24 scanlines in blue. It doesn't matter if the entire pallette was set to black,... its always blue (just the border)....

I hope anyone can explain what is going on. Is this a known bug?

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Por Grauw

Ascended (10063)

imagem de Grauw

02-08-2021, 13:52

If you’re certain your program triggers overscan correctly, it seems like a legitimate bug.

I would report it here: https://github.com/ppeccin/WebMSX/issues

Make sure to attach screenshots, a test case and good description of what it is doing, so ppeccin can easily reproduce it! That will improve the chances of a quick fix greatly.