When the app self-manages the display transform (OAK_MACOS_LAYER_
COLORSPACE=display set at startup), the CAMetalLayer is tagged with the
main display's colorspace so ColorSync passes the already-transformed
pixels through — without the tag the OS would re-correct them (double
correction). The CoreGraphics FFI lives in its own module because the
build script forwards metal_renderer.rs FFI declarations into the
Metal shader header.
Two changes landing W4 of the oak task list:
gpui_macos: the Surface renderer only accepted biplanar YUV 4:2:0 pixel
buffers, so engine BGRA frames could not be displayed. SurfaceBounds gains an
is_bgra flag and draw_surfaces now creates a single BGRA8Unorm texture (and
the fragment shader swizzles it to RGBA) for 32BGRA buffers, keeping the
YUV path unchanged. Verified by running the W3 surface_bridge demo.
gpui_widgets::viewer: ViewerWidget with a pure TransportState machine
(advance/loop/step/in-out, unit-tested), a PlaybackClock trait the host
implements over the engine, a ~60Hz polling ticker, a transport bar emitting
ViewerEvent requests, timecode via gpui::timeline::time, and safe-frame/zoom
toggles. examples/viewer.rs shows a mock clock with generated macOS test
frames. 87 widget + 182 gpui tests pass.
* Add text spacing and transform style plumbing
* Apply byte-stable transforms and spacing-aware truncation
* Add platform letter spacing support
* Fix scheduler clippy warning
* Refresh dependency lockfile
* Fix CI for text spacing changes
* Add text transform preview example
Mike-Solar
Max Carter 祁明思