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adafruit / Adafruit-GFX-Library

Adafruit GFX graphics core Arduino library, this is the 'core' class that all our other graphics libraries derive from
https://learn.adafruit.com/adafruit-gfx-graphics-library
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Faster char write #446

Open nathanjshaffer opened 10 months ago

nathanjshaffer commented 10 months ago

[Sped up char writing with built in font by grouping pixels in column of character map then using writeFillRect() for less spi overhead. With transparent background this speeds up line write speed by about half, with non-transparent background it's about 3 times faster.