BVEStation Forums

BVE => NYCTA Projects => Topic started by: coneyislandDFNQ on October 22, 2011, 11:08:05 am

Title: Better Performance on Routes & Trains
Post by: coneyislandDFNQ on October 22, 2011, 11:08:05 am

I heard some users mention it before and I tested it and the theory is correct.


When developing I suggest that you use .png instead of .bmp


.png uses less disk space and it runs better in openBVE especially with people who have outdated graphic cards.

Title: Re: Better Performance on Routes & Trains
Post by: Gong Gahou on October 22, 2011, 12:30:20 pm

What about the use of alpha channels on .png images? Wouldn't that slow computers down more than .bmp images?

Title: Re: Better Performance on Routes & Trains
Post by: coneyislandDFNQ on October 22, 2011, 12:34:15 pm

Quote from: Gong Gahou on October 22, 2011, 12:30:20 pm

What about the use of alpha channels on .png images? Wouldn't that slow computers down more than .bmp images?

It would but not as much as a .bmp. The .bmp is too big as an image file. Kinda compare it to a .zip and a .rar. I would use .rar or even .7z because it compresses smaller than a .zip file

Title: Re: Better Performance on Routes & Trains
Post by: ipac on October 22, 2011, 12:34:46 pm

Then there would be no alpha channels, since bmp doesn't support it.

Title: Re: Better Performance on Routes & Trains
Post by: coneyislandDFNQ on October 22, 2011, 12:37:39 pm

Quote from: ipac on October 22, 2011, 12:34:46 pm

Then there would be no alpha channels, since bmp doesn't support it.

Even better. Lol

Title: Re: Better Performance on Routes & Trains
Post by: error46146 on October 22, 2011, 03:22:09 pm

We still use BMP for the sake of backwards-compatibility with BVE2.

For maximum performance and space compression I would prefer to use JPEG format but some people have a grudge against it (you all know who you are lol)

Title: Re: Better Performance on Routes & Trains
Post by: Dj Hammers on October 22, 2011, 05:13:23 pm

I do not like to use JPEG because of image noise (however yes I do know that there are noise-free JPEG standards).

JPEG is not meant for being used in textures, but rather images. PNG is perfect for texture use.