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New "style" encoding to replace "linewidth" #389

Merged
merged 5 commits into from
Oct 27, 2023
Merged

New "style" encoding to replace "linewidth" #389

merged 5 commits into from
Oct 27, 2023

Commits on Oct 27, 2023

  1. [encoding] Added a f32->f16 conversion utility 

    This will be used to pack the f64 miter_limit field in `kurbo::Stroke`
into a 16-bit encoding for GPU consumption.
    @armansito
    armansito committed Oct 27, 2023
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  2. [encoding] Introduce the "Style" object 

    Style encodes stroke vs fill style and their related parameters in an
8-byte data structure as described in vello#303. This data structure
will replace the existing "linewidth" stream.
    @armansito
    armansito committed Oct 27, 2023
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  3. [test_scenes] fill_type scene 

    Added a test scene specifically for fill rules, drawing a star shape
and intersecting arcs with opposite winding.
    @armansito
    armansito committed Oct 27, 2023
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  4. [encoding] Replace linewidth stream with the new style encoding 

    * The linewidth stream is now the "style" stream. This has been wired up
  all the way up to the `flatten` pipeline which uses the new encoding
  to extract the fill rule.

* Pipelines downstream of `flatten` still use the old linewidth scheme.
  They will be fixed up in a follow-up change.
    @armansito
    armansito committed Oct 27, 2023
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  5. [encoding] Minor style fixes

    @armansito
    armansito committed Oct 27, 2023
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