No vertical pixelation in Interlace Mode 2

[Former user]

Original issue 362 created by bobesh8 on 2013-10-15T03:31:16.000Z:

I was using Kega Fusion, and found out you can have
No vertical pixelation in Interlace Mode 2.

https://dl.dropboxusercontent.com/u/58633652/genplus_gx/Sonic%20The%20Hedgehog%202%20(W)%20%5B!%5D000_648x480.bmp

I was wondering if genplus-gx has this feature.
Does it? Can it be applied?

Also can you apply the 328x480 vertical size resolution for that mode?

https://dl.dropboxusercontent.com/u/58633652/genplus_gx/Sonic%20The%20Hedgehog%202%20(W)%20%5B!%5D000.bmp

[Former user]

Comment # 1 originally posted by ekeeke31 on 2013-10-15T08:09:56.000Z:

1) "No vertical pixelisation" ? I am not sure to understand what that means. Genesis Plus GX does interlace mode 2 just like real hardware does i.e interlaced 320x480 output:

* Most faithful output is with "ORIGINAL" rendering mode where the interlaced screen is sharpener but flickers like with original Mega Drive.

* Setting rendering mode to "INTERLACED" will get you more filtered image and "PROGRESSIVE" will give you a progressive non-flickering 640x480 image, which is probably the "best" looking for you if you have a component cable and a TV supporting 480p.

* You can adjust the pixel filtering by playing with "BILINEAR" and "DEFLICKER" filter settings. All these settings are under the VIDEO option menu, check README for more details.

2) As for a 328x480 ouput (why 328 ? Mega Drive internal max resolution is 320 pixels), you cannot have that. You can somehow achieve it by setting the ASPECT RATIO option to SCALED then play with with the XSCALE offset setting to reduce the emulator upscaling but the max value are capped so you cannot completely disable the upscaling. It's easy to change the max values in the code although I don't really get why you would want to get a 320 pixels wide image surrounded by huge vertical borders on your TV ?