Graphics::drawImage 100x slower on retina since Logic 10.5, than on non-retina

[pflugshaupt]

Are you using Components with CachedComponentImages? I think those are also affected… or at least have been in the past, so I stopped using them at all on OSX.

I just checked on Juce 5 develop and it indeed is still broken after multiple years. sigh. This bug also slows down some path and font rendering as the curve resolution is determined by the same getPhysicalPixelScaleFactor.

I reported this here and the conclusion was that the problem doesn’t happen in all hosts. In my case it happened in AULab and still does:

Wrong globalScaleFactor factor returned in OSX plugin paint() method

I believe I found a major bug in the CoreGraphicsContext slowing down some drawing in plugins on OSX unnecessarily. It’s all about getPhysicalPixelScaleFactor(); This is on OSX 10.11.6 on a Retina Macbook Pro using the latest JUCE dev tip. If I add DBG("scale: " << g.getInternalContext().getPhysicalPixelScaleFactor()); To the paint method of an empty standalone application I get the correct value 2. If I add the same line to the Juce Demo Plugin editor’s paint method and build the AU ve…

In the meantime I checked with Logic 10.4 and there I get a scale factor of 2.

So maybe the issue does come from Logic 10.5.