8e2b67bfa5
Keep every pattern family visible until all projected spacings become sub-pixel, then switch the hatch to solid. Refs #569
40 lines
1.4 KiB
Rust
40 lines
1.4 KiB
Rust
const STORAGE_SHADER: &str = include_str!("../src/shaders/hatch.wgsl");
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const TEXTURE_SHADER: &str = include_str!("../src/shaders/hatch_texture.wgsl");
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fn assert_all_family_lod(source: &str, name: &str) {
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let module = naga::front::wgsl::parse_str(source)
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.unwrap_or_else(|error| panic!("{name} WGSL must parse: {error}"));
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naga::valid::Validator::new(
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naga::valid::ValidationFlags::all(),
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naga::valid::Capabilities::empty(),
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)
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.validate(&module)
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.unwrap_or_else(|error| panic!("{name} WGSL must validate: {error}"));
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assert!(
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source.contains("var all_families_subpixel"),
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"{name} must track the all-family LOD transition"
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);
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assert!(
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source.contains("if all_families_subpixel"),
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"{name} must solid-fill only at the all-family transition"
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);
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assert!(
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!source.contains("if is_subpixel") && !source.contains("visible_families"),
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"{name} must not skip individual families before LOD activates"
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);
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assert!(
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!source.contains("min_spacing_world"),
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"{name} must not solid-fill a complex pattern because of one dense family"
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);
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}
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#[test]
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fn storage_hatch_lod_waits_for_every_family() {
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assert_all_family_lod(STORAGE_SHADER, "storage hatch");
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}
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#[test]
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fn texture_hatch_lod_waits_for_every_family() {
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assert_all_family_lod(TEXTURE_SHADER, "texture hatch");
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}
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