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Famicom Mini series: corrupted graphics with OpenGL renderer on Windows in certain games #1635

angrylion7 opened this issue Jan 23, 2020 · 2 comments


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@angrylion7 angrylion7 commented Jan 23, 2020

I'm on Windows 7 x64, using a GeForce GT630 1 GB VRAM GPU (GK208 chip) and the latest nVidia driver v441.87. Super Mario Bros. 2 and Metroid from Famicom Mini Series show black space instead of lower row(s) of emulated background tiles as shown on the screenshot, and only do this with the OpenGL renderer. Many other entries in the Famicom Mini Series don't suffer from this, and neither does Metroid from the Classic NES series, curiously. This happens as far back as 20ea552. I also tested 921f3f8, and it's the same, only the background in SMB2 is not rendered properly at all. I assumed that's because the OpenGL renderer was not mature enough by the time of 921f3f8, and I don't need to go further back, am I wrong?

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@endrift endrift commented Jan 23, 2020

This appears to be because sprite cycle counting isn't implemented yet.

@endrift endrift added this to the mGBA 0.9.0 milestone Jan 23, 2020
@endrift endrift closed this in 318a96b Jun 10, 2020
@endrift endrift modified the milestones: mGBA 0.9.0, mGBA 0.8.2 Jun 10, 2020
endrift added a commit that referenced this issue Jun 15, 2020
endrift added a commit that referenced this issue Jun 15, 2020
@endrift endrift modified the milestones: mGBA 0.8.2, mGBA 0.9.0 Jun 15, 2020
@endrift endrift reopened this Jun 15, 2020
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@endrift endrift commented Jun 15, 2020

Helps if I actually do this per scanline, which I wasn't.

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