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@jepler jepler commented Oct 28, 2025

The disk icon and mac icon shown during early boot are blitted as solid icons, with the 50% tone background baked in.

The original display height was not a multiple of 4, so this ended up at an odd screem line. e.g., 145.

When a multiple of 4 screen height was used instead, it ended up at an even screen line, e.g., 214. This makes the pattern clash with the surrounding background.

Ensuring the row number used for "mid screen" is odd fixes this.

Since the original width was a multiple of 4, horizontally centered items were fine.

The disk icon and mac icon shown during early boot are blitted as
solid icons, with the 50% tone background baked in.

The original display height was not a multiple of 4, so this ended
up at an odd screem line. e.g., 145.

When a multiple of 4 screen height was used instead, it ended up at
an even screen line, e.g., 214. This makes the pattern clash with the
surrounding background.

Ensuring the row number used for "mid screen" is odd fixes this.

Since the original width was a multiple of 4, horizontally centered
items were fine.
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