| ID | Category [?] | Severity [?] | Reproducibility | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 09090 | Graphics | Minor | Always | 2 days ago | 2 days ago |
| Tester | ICEknight | View Status | Public | Platform | MAME (Official Binary) |
| Assigned To | Resolution | Open | OS | Windows 10/11 (64-bit) | |
| Status [?] | Direction Needed | Driver | |||
| Version | 0.273 | Fixed in Version | Build | 64-bit | |
| Fixed in Git Commit | Github Pull Request # | ||||
| Summary | 09090: megadriv: Some screen modes alter aspect ratio and density of scanlines | ||||
| Description |
Certain PAL games (such as `toejam2` or `sor`) use a higher vertical resolution, filling more screen space as a result. In MAME's Mega Drive emulation all games fill the same screen space regardless of the number of lines they're using, causing the aspect ratio to change. The number of visible scanlines and aspect ratio should stay the same, regardless of the game. |
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| Steps To Reproduce |
- Load a PAL game that uses a taller resolution than usual, such as `megadriv/toejam2`. The screen will reach the top and bottom of the display. - Load a PAL game that uses a regular resolution, such as `megadriv/sonic`. It will also reach the top and bottom of the display. This is wrong behavior since the vertical resolution of the emulated display should be the same as before. |
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| Additional Information | Showing the full visible area at all times would fix this, make all PAL games have their proper aspect and also fix issue 7271: https://mametesters.org/view.php?id=7271 | ||||
| Github Commit | |||||
| Flags | Verified with Original | ||||
| Regression Version | |||||
| Affected Sets / Systems | megadriv | ||||
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Attached Files
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Game window of PAL game with normal vertical resolution
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Game window of PAL game with extended vertical resolution
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MAME's scanline density of PAL game with normal vertical resolution
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MAME's scanline density of PAL game with extended vertical resolution
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MAME screenshot of PAL game with normal vertical resolution
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MAME screenshot of PAL game with extended vertical resolution
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