flyinghead / flycast

Flycast is a multiplatform Sega Dreamcast, Naomi, Naomi 2 and Atomiswave emulator
GNU General Public License v2.0
1.46k stars 174 forks source link

Strange lines on the title screen of the game Ms. Pac-Man Maze Madness #1613

Closed melek8014 closed 1 month ago

melek8014 commented 2 months ago

Please Note: This form is the minimum required information for submitting bugs.
Removing this form may lead to your issue being closed until it is completed. Strange lines on the title screen of the game Ms. Pac-Man Maze Madness Platform / OS / Hardware: MS Windows 7 64-bit SP1, AMD Athlon X4 880K Quad Core Processor, 12 GB RAM, NVIDIA GeForce 8800 GT Github hash:

Hardware:

Description of the Issue

Add a short, concise description of the issue here

Debugging Steps Tested

Logs Gathered


Please paste the contents of the log / logs here
You may leave this field blank if you have none.

Screenshots Bez tytułu

(Replace this line with any issue screenshots)

flyinghead commented 2 months ago

The two horizontal lines are due to the game using wrong texture coordinates, combined with Repeat mode for the title graphics (in purple). This causes the texture to wrap around and some of the texture bottom pixels are drawn at the top (and vice versa for the bottom textures).

I haven't tested it myself but it looks like it's happening on original hardware too: https://youtu.be/DabyDVblgQ0?si=dzpBVf3ZCVoRUij7&t=27

melek8014 commented 2 months ago

The two horizontal lines are due to the game using wrong texture coordinates, combined with Repeat mode for the title graphics (in purple). This causes the texture to wrap around and some of the texture bottom pixels are drawn at the top (and vice versa for the bottom textures).

I haven't tested it myself but it looks like it's happening on original hardware too

I understand, so it's not the emulator's fault and it's as it should be, thanks for the answer.