Re: [SPAM] Re: [Newbies] Reading PNG images into squeak image is slow

Levente Uzonyi pisze:

Thanks. I found a really bad bottleneck, and fixed some others in PNGReadWriter. I have uploaded my changes to the Trunk, you can find them in Graphics-ul.275. Loading any of the png images you've sent takes 1-1.5 seconds on my machine with the new version. They took 4-7.5 seconds with the old, so the speedup is about 4-5x, which might not be enough for you. You could achieve another 2.5x speedup if your images were in RGBA format (they are in RGB now), because that way the scanline can be converted to a Form without byte level manipulations.

Levente

Thank you very much!!!