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KenM76andClaude Opus 5.5
05630b5f15
vello_cpu 0.0.8's clip_color, shared by the nonseparable blend modes, divided 0 by 0 when a gray's equal components were rounded just below 0 or above 1 after set_lum. The NaN drew the pixel black at the source's alpha whatever the backdrop: nine gray levels under /BM /Color in an empty isolated group (0.96 g among them) rendered (0, 0, 0), and two more at half opacity came out wrong. Vendor vello_cpu 0.0.8 (Apache-2.0 OR MIT) with a backport of linebender/vello#2000, which clips only when the denominator is positive. No vello_cpu release carries the fix yet; drop the copy when one does. Tests in it::nonseparable_gray run every gray level. The two Color ramps fail with the unpatched blend.rs. The Luminosity ramp (black over each opaque gray, upstream's other case) passes either way here: pages use the u8 pipeline, and that case only failed in the f32 one; it stays as a guard. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SqmHYx8FiWM5PcsoiErgp9
74 lines
2.1 KiB
TOML
74 lines
2.1 KiB
TOML
[package]
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name = "vello_cpu"
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# When moving past 0.0.x, also update caveats in the README
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version = "0.0.8"
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description = "A CPU-based renderer for Vello, optimized for SIMD and multithreaded execution."
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categories = ["rendering", "graphics"]
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keywords = ["2d", "vector-graphics"]
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edition.workspace = true
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rust-version.workspace = true
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license.workspace = true
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repository.workspace = true
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[package.metadata.docs.rs]
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all-features = true
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# There are no platform specific docs.
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default-target = "x86_64-unknown-linux-gnu"
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targets = []
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[dependencies]
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bytemuck = { workspace = true }
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glifo = { workspace = true, default-features = false, optional = true }
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vello_common = { workspace = true }
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hashbrown = { workspace = true }
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png = { workspace = true, optional = true }
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crossbeam-channel = { workspace = true, optional = true }
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ordered-channel = { workspace = true, optional = true, features = ["crossbeam-channel"] }
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rayon = { workspace = true, optional = true }
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thread_local = { workspace = true, optional = true }
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[features]
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# If adding new features, also add to `src/lib.rs`
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default = ["std", "png", "text", "u8_pipeline"]
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# Get floating point functions from the standard library (likely using your target’s libc).
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std = ["vello_common/std", "glifo?/std"]
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# Use floating point implementations from libm.
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libm = ["vello_common/libm", "glifo?/libm"]
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# Allow loading Pixmap from PNG, and drawing png glyphs.
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png = ["dep:png", "vello_common/png", "glifo?/png"]
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# Enable multi-threaded rendering.
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multithreading = [
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"std",
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"dep:rayon",
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"dep:thread_local",
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"dep:ordered-channel",
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"dep:crossbeam-channel",
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"vello_common/multithreading",
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]
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# Add support for text rendering
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text = ["dep:glifo"]
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# Speed focussed rendering using u8 math
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u8_pipeline = []
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# Quality focussed rendering using f32 math
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f32_pipeline = []
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[lints]
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workspace = true
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[[example]]
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name = "basic"
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required-features = ["png", "std"]
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[[example]]
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name = "clipping"
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required-features = ["png", "std"]
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[[example]]
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name = "masking"
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required-features = ["png", "std"]
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[[example]]
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name = "paints"
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required-features = ["png", "std"]
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