The Ken Burns wallpaper pan and dim veil move to the GPU: the lock
surface is wrapped in a wl_egl_window, the wallpaper is a textured quad
whose shader applies the pan transform and veil (GPU bilinear makes
sub-pixel panning free — the ~19ms/frame software bilinear is gone,
idle CPU drops from 40% to ~0%), and the clock/pill/status chrome is
still composed with tiny-skia and composited over. EGL init failure
falls back to the fully-software path unchanged.
Notable fixes along the way:
- Text blending is now destination-aware: the old blend forced output
alpha to 255, which is correct over the opaque background but made
every glyph opaque in the chrome-only pixmap the GPU path composites.
- wayland-client switches to its C backend for raw surface pointers,
and khronos-egl/glow replace a hand-rolled EGL loader.
Tests grew from 72 to 88: GPU pan_region parity with the software path
(and edge/bounds/corner invariants), shader-uniform/EGL-attrib sanity,
chrome bounding-rect tracking, and a pixel-level parity test proving
the GPU split stays within double-rounding ULP range of the single-pass
compose.
Adds a full motion system to the lock screen (staggered entrance, dot pop
+ caret, wrong-password shake, success flash, clock crossfade), depth
polish (gradient veil, pill shadow + hairline border, "Enter password"
hint, responsive typography), and a second wave of animations (idle
breathing, success dot cascade, status slide-in, parallax unlock drift,
animated checking ellipsis, opt-in Ken Burns wallpaper pan). Includes a
dev-only breadlock-preview harness that renders every state to PNGs with
no Wayland involved, and a design/sketch.html prototype.
Fixes text alpha being dropped by cosmic-text's glyph-mask path (all text
fades now work) and double-drifting that made the date/status overlap the
clock/pill during unlock.
Pulls the fix for panels turning brown/off-hue when pywal extracts a light
or muddy background from the wallpaper — background/surface now stay BOS's
fixed dark constants regardless of what the wallpaper looks like.
