Hi, the context of this is mail is: - scenegraph - FBO based effects (plain shader-effects, qtgraphicaleffects, qt3d) - embedded hardware / opengl es 2.0
I've noticed that on a lot of embedded systems the FPS drops rather drastically (e.g. from 60 to 30 with one effect, from 30 to 10-15 with two effects) when using FBO based effects. ... even simple effects, sometimes even if they have 'visible: false' Is this somewhat expected? It does sound like a vsync vs. fbo problem ... doesn't it? Is this a fault/bug in the embedded opengl drivers? Did anyone ever had a setup, using one or multiple FBO based effects did still result in 60fps? (as it should be for simple(!) effects?) This mail is 'vague' on purpose, I don't want to start a concrete technical discussion ... I rather want to ask for opinion and experience. Greets Thomas _______________________________________________ Interest mailing list [email protected] http://lists.qt-project.org/mailman/listinfo/interest
