Can't load image with 16 colors + transparency

[ollej]

I have a PNG image that I'm pretty sure uses only the 16 allowed colors, plus transparency. But when building I get the following error:

💥 Error: convert file: the image has too many colors.

If I remove one color (black in this case), it works. I've checked the file with imagemagick histogram and it only has the allowed colors.

It would be nice if the error message printed which file and which color is incorrect as well.

[orsinium]

We can support only 16 colors or 15 colors plus transparency. Each pixel in image encoded with 4 bits, which gives 16 possible values for colors and transparency included. I thought about using a bitmap for transparency but it gets wasteful.

It would be nice if the error message printed which file and which color is incorrect as well.

Great suggestion! Let's improve error messages.

[ollej]

Ok. Then I think the documentation needs to be clarified regarding this.

https://github.com/firefly-zero/docs.fireflyzero.com/blob/306a2c9ae8b1b105249f1382f68e26bb07ee20f9/content/dev/graphics.md?plain=1#L221