Bitmap native color format venusq2

Working on a watchface for amoled watches ...

Code works fine in sim for all amoled models except Venu Sq 2 (even Venu Sq 2 Music works fine), which gives an exception

on a line using drawBitmap2 saying "Source must be native color format". My bitmap is a png (tried fiddling with packingFormat).

Could this be a sim issue (I wouldn't think Venu Sq 2 and Venu Sq 2 Music have graphics differences)?

What is the meaning of the exception, any way to avoid it?

Using sdk 6.4.2 ...

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flocsy🤠 9 months ago +1

Strange, I wouldn't think either that there are differences. You can compare the simulator.json and the compiler.json of the 2 devices, you should be able to pick up the differences, as there probably…

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0 MobileDriveway 8 months ago in reply to flocsy🤠

I found this:

FORMAT	ADVANTAGE	DISADVANTAGE	USE CASE
`default`	Available on all products, fastest to load, supports alpha channel	No compression	App runs on pre-Connect IQ 4.0 devices. Low palette images can have very small runtime costs
`png`	Lossless, compressed and supports alpha channel	Slowest to load, which can add runtime cost if purged and reloaded frequently from the graphics pool	Importing non-photo images with or without alpha channel
`jpg`	Compresses very well, fast to load	Lossy format and does not support alpha channel	Importing photo imagery without alpha channel
`yuv`	Compresses well, supports alpha channel, fast to load	Lossy format	Importing photo imagery with alpha channel

So, it looks like default format supports alpha channel (transparency) and has wide compatibility. Can anyone from Garmin tell us what exactly the "default" format is ???