NovaCustom bootsplash is a low-quality jpeg

[lucius-kruse]

Brief summary
When booting my NovaCustom laptop, I noticed the logo looked a little "off".
If you take a close look at novacustom/bootsplash.bmp of Dasharo/dasharo-blobs, you can notice severe jpeg artifacts (the 8x8 MCU blocks), especially in the letter "N":

Additional context
The logo should be replaced by a high-quality logo (especially since bmp is uncompressed anyway), looking something like this:

I couldn't find the correct svg to preserve exact image dimensions and colors (the debconf25 sponsor svg I used in the sample image has a lower-saturation gradient in the logomark). The current bootsplash is 577x432 px with the logo occupying an area of ~567x102 px (5px left and right margin, 112.5 px top margin, ~57 px bottom margin; Why does it have margins anyway, and why are they so large?).

@wessel-novacustom What file should be used for the bootsplash, and how should it be placed/dimensioned?

[wessel-novacustom]

Why does it have margins anyway, and why are they so large?).

This is historical. When we used Insyde proprietary firmware, none of any image but a GIF image (yes, I'm not joking) would be accepted by a shitty proprietary program to implement the boot logo. That logo was then converted to BMP and has remained our logo ever since.

So yeah, good point. But low priority, I guess?

[wessel-novacustom]

@lucius-kruse It would be so cool if you could do a pull request for a better BMP file.

[BeataZdunczyk]

We have tested this change on NUC Box v0.9.0-rc4 binary, and the logo looks good: it is centered, the colors are correct, and the image is crisp. Thank you for your contribution. This change will be visible in our next releases for NUC Box and laptops.