The 2.3.4 version introduced numerous bugs to text drawing

[lobodpav]

In my app, I use custom characters, one of them being °C. This code adds it:

oled.addChar(oled.charImage(`
    #  #  #  .  .  .  .  .
    #  .  #  .  .  .  .  .
    #  #  #  .  #  #  #  .
    .  .  .  #  .  .  .  #
    .  .  .  #  .  .  .  .
    .  .  .  #  .  .  .  .
    .  .  .  #  .  .  .  #
    .  .  .  .  #  #  #  .
`), degreeCelsius)

In the attached pictures, I've taken macro photos and left the battery symbol in place for visual reference.

In v2.3.3, this is how my temperature reading was rendered this way:

In v2.3.4 though:

1. The letters are squeezed together like the width of the custom characters would be 8px no more
2. The custom character is shifted 1px up
3. The custom character misses the first column

[Pythom1234]

This is due to character rendering optimization: v2.3.4 stores characters as 8-bit number, one bit for each pixel in a row, so characters can only be 8 pixels wide. And the height is increased to accommodate other characters, such as {. If you want to draw characters wider than 8 pixels, use two characters in a row.

[lobodpav]

This is due to character rendering optimization: v2.3.4 stores characters as 8-bit number, one bit for each pixel in a row, so characters can only be 8 pixels wide. And the height is increased to accommodate other characters, such as {. If you want to draw characters wider than 8 pixels, use two characters in a row.

Well, my character is exactly 8x8 pixels and yet it was overdrawn with the number next to it.

What I don't understand:

1. Why was my 8x8px character cropped?
2. Why is my character shifted 1px up when it is 8px tall?
3. Why is the first number shifted 3px to the right when previously "empty" pixels were after the digit (now they are before it)?

[Pythom1234]

1. Oh, I didn't understand that before. Indeed, cropping the character was a bug that I am now fixing.
2. It counts from left top corner, so you must add 1px space on top of your image.
3. It is because the font has right-aligned characters. I will use other font for text drawing.

[lobodpav]

I've checked the v2.3.5 and while the first column is OK now, the last column is now cut off 😞
This is because the drawn text now occupies 25px instead of 24px, and so it has overflowed the right border of my screen.