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Zach Nelson
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## Summary **What is the goal of this PR?** A tweak to the fixed-point x-advance and kerning calculations to ensure that the spacing between any two glyphs is always calculated consistently. I noticed that sometimes I'd see common character pairs like "oo" more than once on a page, and the distance between the two snapped to different pixels depending on the running accumulated error for the line of text. This change uses a differential rounding approach where each glyph's x-advance plus the kerning relative to the next glyph are combined in fixed-point precision, then snapped to a pixel to draw the next glyph. This results in a consistent inter-glyph spacing any time the same two glyphs show up adjacent to each other, regardless of the accumulated error across the line. --- ### AI Usage While CrossPoint doesn't have restrictions on AI tools in contributing, please be transparent about their usage as it helps set the right context for reviewers. Did you use AI tools to help write this code? _**PARTIALLY**_
This directory is intended for PlatformIO Test Runner and project tests. Unit Testing is a software testing method by which individual units of source code, sets of one or more MCU program modules together with associated control data, usage procedures, and operating procedures, are tested to determine whether they are fit for use. Unit testing finds problems early in the development cycle. More information about PlatformIO Unit Testing: - https://docs.platformio.org/en/latest/advanced/unit-testing/index.html