Mod is obsolete, was merged into a general optimization mod called Blaze
Some of the code here is awful and dirty so please just visit blaze's repository if you're interested in how this is implemented lol
By default, cocos2d-x (and by proxy Geometry Dash) uses libpng to decode PNG files. While it's not necessarily a slow library, there are definitely better options out there. Specifically, this mod utilizes spng and fpng (slightly modified to suit my needs).
While fpng is the fastest library out of 3 by a long shot, it can only decode images written with fpng itself. This means that when you launch the mod for the first time, it has to perform the conversion, loading all resources with spng and then storing them to the cache with fpng.
Yes. However, the mod caches resources in a smart way. It does not convert every single .png file in the Resources folder, but rather it only converts a file once it's first accessed. For example, this means that if you play on medium settings, you don't have to worry about copies of high-detail textures taking up your disk space. Additionally, there's a way to clear the cache fully from within the game.
All of them, including resources from other mods and texture packs. The only exception is if the mod uses a non-standard way of loading resources, such as CCImage::initWithImageData (for example images from Level Thumbnails).
No. Rather than relying on filenames, cached images are identified using the CRC32 checksum of the image data. Updating the game or applying texture packs should never cause any issues.
Loading GJ_GameSheet03-uhd.png 32 times on my PC
- libpng: 3.487s
- spng: 3.373s
- fpng: 2.373s