The renderer composited in 8-bit integers, so where a partly transparent
anti-aliased edge crossed opaque art (or a background colour) the result
came out at alpha 254 on some pixels, and PNG, TIFF and WebP files were
written with an alpha channel. Raster exports (and Save for Web) now
composite in floating point (vello_cpu's f32 pipeline, enabled as a
feature), offscreen groups, masks and patterns included; the canvas keeps
the faster 8-bit path.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A CMYK document that shows transparency is drawn once per ink plane
(complemented C, M, Y; complemented K as a grey) so every blend mode,
opacity, group, knockout and effect composites inks, PDF-style; the
planes' inks are shown through the working CMYK profile (cached 4-D XYZ
table). Cyan multiplied over magenta now shows C100 M100. Opacity masks
keep screen luminance; RGB colours and placed images are separated
first. RGB documents and opaque CMYK documents keep the screen-colour
path.
PDF export of CMYK documents writes its transparency groups with
/CS /DeviceCMYK (luminosity mask groups stay RGB) and puts top-level
transparency in a non-isolated page-wide group so it blends in CMYK too.
Flatten Transparency composites CMYK documents ink by ink and makes CMYK
regions. Non-separable modes no longer give NaN for greys.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Object > Pattern > Tile Edge Color... picks the colour of the tile edge
(a layer-colour preset or a custom colour), stored in the preference
patternTileEdgeColor and passed to the renderer. Pattern Options gains
Show Swatch Bounds: a dashed outline of the part of the tiling the swatch
repeats (the period of brick and hex tilings).
Commands: prefs.set {patternTileEdgeColor}, pattern.options
{showSwatchBounds}, ui.tileEdgeColor. Model: PatternDef.show_swatch_bounds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
On screen, a group (or object) with opacity, a blend mode, an opacity mask or
knockout whose content blends is drawn offscreen over a copy of its backdrop
and mixed back in by its opacity, mask and clip (a group blend mode then
applies to the backdrop-free result, as PDF defines it). Isolate Blending keeps
the content starting from transparency. Clip groups no longer isolate their
children (blending content is clipped per drawing), and non-isolated knockout
groups composite their elements against the art below the group. Groups
without blending inside still render as plain layers.
In PDF, such groups are written as non-isolated transparency groups (a
constant-alpha soft mask instead of the writer's isolated opacity group),
knockout groups included.
doc: Node::blends_through / children_blend.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- New original DrawCraft mark (gradient + pen nib) replaces the two-letter badge
- render: thumbnails and pattern tiles use a single-threaded context (vello's default is
multithreaded and panics on filters); per-item raster effects detected
- Type tool state no longer leaks across documents
- ui.set {status} for clean screenshots
- README: new hero, feature shots, Made in DrawCraft gallery; examples/neon-drive, ribbons,
feature-sheet; ASSETS.md updated; heading renamed to Crafting Apps
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
bflatastic
Brandon Thomas