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mGBA 0.9.0 Introduces Lighting Offset in F-Zero: Maximum Velocity #2149

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CLS-StarkThyme opened this issue Apr 28, 2021 · 1 comment
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mGBA 0.9.0 Introduces Lighting Offset in F-Zero: Maximum Velocity #2149

CLS-StarkThyme opened this issue Apr 28, 2021 · 1 comment
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blocked:needs hw testing May be present on actual hardware, but need confirmation platform:GBA Game Boy Advance-related issues

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@CLS-StarkThyme
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F-Zero - Maximum Velocity (USA, Europe)-1
mGBA 0.9.0 introduced something very unusual. This does not apply to Falcon Densetsu (GP Legend) or Climax (from what I saw), so it is exclusive to Maximum Velocity. What I noticed is that the lighting on the track was shifted downward by one pixel. Again, while very minor, I spotted it most easily on Tenth Zone East: Snake Circuit.
@CLS-StarkThyme
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Upon further analysis by disabling certain background and object layers, it became apparent that a single-row line was stretched to fill two pixel rows.
mGBA 0.8.4:
F-Zero - Maximum Velocity (USA, Europe)-4
mGBA 0.9.1:
F-Zero - Maximum Velocity (USA, Europe)-5

@endrift endrift added blocked:needs hw testing May be present on actual hardware, but need confirmation platform:GBA Game Boy Advance-related issues labels Apr 29, 2021
@CliveArdern CliveArdern mentioned this issue Apr 29, 2021
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@endrift endrift closed this as completed in 8416380 May 1, 2021
endrift added a commit that referenced this issue May 2, 2021
@endrift
GBA Video: Revert scanline latching changes (fixes #2153, fixes #2149)
2d03ae7
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@endrift @CLS-StarkThyme