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[Impeller] Calculate per-glyph (instead of per typeface) bounds when adding glyphs to atlas. #116366

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[Impeller] Calculate per-glyph (instead of per typeface) bounds when adding glyphs to atlas.#116366
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e: impellerImpeller rendering backend issues and features requestsengineflutter/engine related. See also e: labels.
@chinmaygarde

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@chinmaygarde
chinmaygarde
opened on Dec 1, 2022

The current strategy wastes a whole bunch of space in the atlas. Rework atlas generation to take per glyph metrics.

Related to flutter/engine#37998 which exacerbates this wastage but this issue was always present.

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e: impellerImpeller rendering backend issues and features requestsengineflutter/engine related. See also e: labels.

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