How can I improve the performance of Skia's canvas.drawImageRect in my application?

[stephane]

  How can I improve the performance of Skia's canvas.drawImageRect in my application?

• I have an SkSurface where I redraw everything on each paint refresh.
• I've noticed that canvas.drawImageRect can be slow sometimes.
• This happens both in Windows and Android applications.
• What optimizations can I apply to make it faster?
• Would caching, using a specific SkSamplingOptions, or another technique help improve performance?

Thanks you by advance