weird bitmap coloring in sim

Hi, I am working on a new watch face with the Olympics logo in it and when I tested the loaded bitmap in the simulator something really weird happened to me with the sim colors.

here's the png file I loaded and here's the sim result (ignore the placements of all the other stuff besides the Olympics logo): https://ibb.co/Q9RWWTM

Does anyone knows why it happens and how to solve it?

UPDATE: tried to use the picture in other watch faces I created. It happens in all of the other watch faces too but I still don't know what causes the changes between this png and this bitmap of the png.

TY in advance!

Top Replies

Kfir Eliyahu over 3 years ago in reply to FlowState +1

EDIT: I created a folder of resources-round-240x240 and now there's no out of memory because I reduced the PNGs to 240x240 because it is only 1/3 of the original PNG.

All Replies

0 FlowState over 3 years ago

Could you link to the exact PNG (not a screenshot) and/or a zip with a simple example project?

0 Kfir Eliyahu over 3 years ago in reply to FlowState

Sure. Just a couple of seconds!

0 Kfir Eliyahu over 3 years ago in reply to FlowState

https://drive.google.com/drive/folders/1DrMAFdcxHidYVdPADz6kASSiIrIxhxqs?usp=sharing

here's a link to the whole project til now. I'm trying to make a settings for a colorful or black rings hence the png you see here is called ColorfulRings in the project.

TY for trying to help!

0 FlowState over 3 years ago in reply to Kfir Eliyahu

Np.

From your post, I kinda guessed this was a dithering problem, but I wanted to try it first to be sure: you can fix the problem that you're having by disabling dithering in the resource definition in drawables.xml:

See:

[https://developer.garmin.com/connect-iq/connect-iq-faq/how-do-i-optimize-bitmaps/#dithering]

I did notice that your app runs out of memory for all watches other than Venu / 2 / 2S.

0 Kfir Eliyahu over 3 years ago in reply to FlowState

Hi. ty for helping again, I didn't know about dithering and it indeed solved the problem. about the memory problem, again it happens in the loading of the rings background but the memory usage I see is really low so I have no idea what causes this. I will try to reduce the size of png file but I don't have other ideas besides that. I will also try to use the tips you gave me here: https://forums.garmin.com/developer/connect-iq/f/discussion/274289/getting-error-out-of-memory-error-details-failed-invoking/1314618#1314618 and hope it will be fixed somehow. I still lack of in experience and knowledge about the garmin devices and connect iq

0 Kfir Eliyahu over 3 years ago in reply to FlowState

EDIT: I created a folder of resources-round-240x240 and now there's no out of memory because I reduced the PNGs to 240x240 because it is only 1/3 of the original PNG.

0 FlowState over 3 years ago in reply to Kfir Eliyahu

Yep. Even more to the point, if you convert your original PNG to BMP (which is uncompressed), then you'll see the size is 87 KB, which explains why most watches would run out of memory.

Even if the source image is compressed (e.g. PNG or JPG), the resource compiler has to convert it to an uncompressed BMP before the device can deal with it. EDIT: this only applies to pre-CIQ 4.0 devices.

0 FlowState over 3 years ago in reply to FlowState

Another thing to note is your background doesn't have to cover the entire watchface. You could just crop the part with the rings and position it manually, which would save even more memory, if you needed it.

0 jim_m_58 over 3 years ago in reply to Kfir Eliyahu

The venu2/2s is VERY different that other watches when it comes to bitmaps and custom fonts. In the sim, you'll see it's got 92k, but what's used by your app doesn't include your bitmaps and custom fonts on the v2. Those get loaded into a separate area called the graphics pool. On all other watches the bitmaps and custom fonts get loaded into your apps memory.

0 jim_m_58 over 3 years ago in reply to jim_m_58

See this for info on things like the graphics pool, along with other things unique of CIQ $.0 devices:

https://forums.garmin.com/developer/connect-iq/b/news-announcements/posts/a-whole-new-world-of-graphics-with-connect-iq-4