Hello, I have several relatively big pixmap I'd like to manage through cache. Big meaning 1024x1024 at a maximum (one edge is 1024 while the other is less or equal). I need to keep something like 10 of those in a cache system. Each image being quite heavy to paint, that would help a lot.
I believe each pixmap uses a maximum of 1024 * 1024 * (32 / 8 byte) / 1024 / 1024 = 4 Mb, right? QPixmapCache is eating way too much memory for that (40MB + "whatever-is-needed-for-qt" on regular memory), on android and especially iOS it's a no go. Plus it's kind of shared with qt own needs so it's hard to decide which limit to give. What would you advise? Saving the pixmap on disk, with a "kind of cache" system to limit it to a given size, last used is dropped etc? Using opengl textures to store/restore img with a similar cache system? Using QPixmapCache anyway? Something else? I should add that in our case it's way faster to read the pixmap from a pre-saved png than to re-generate it, and that quality is ok for our needs. So a disk-cache might be ok. But 40mb on a mobile device is something expensive.... Thanks Philippe Lelong _______________________________________________ Interest mailing list [email protected] http://lists.qt-project.org/mailman/listinfo/interest
