~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ First this question came about because I noticed some distortion problems with HLSL filter and MAME in regards to 'aperture.png' with the game 'Metal Slug 1' when viewed in either 'standard aspect ratio' or 'pixel aspect ratio'. When in 'standard aspect' ratio view the aperture.png gets distorted because the 'y count' does not allow a value that is mathematically accurate with the change in aspect ratio. When in 'pixel aspect' ratio view the aperture.png looks fine because the 'y count' treats the game resolution as it's canvas I guess. I will post more information about this problem on the MESS board so 'Just Desserts' can see it. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Anyway, I had a look at some items in Metal Slug 1 under 'standard aspect' view & 'pixel aspect' view. I noticed that the circular explosions and car wheels *looked more round* when in 'pixel aspect' view and they did *not look perfectly round* when in 'standard aspect' view.
I then had a look at a random video on youtube of a Metal Slug 1 cabinet and it looked to me there were black bars at the top and bottom of the screen.
This leads me to believe that maybe we should be using 'pixel aspect' view in MAME for Metal Slug 1 and possibly all NeoGeo games?
In MAME 'Standard aspect' view fills the screen vertically. In MAME 'pixel aspect' view has the black bars top and bottom of screen.
Can anyone check and confirm this on a real Metal Slug 1 cabinet and maybe with other NeoGeo games as well.
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