Levels (Individual Controls), Gamma/Pedestal/Gain, Photo Filter, Change Color,
Change to Color, Leave Color, Broadcast Colors, Color Balance (HLS), Video
Limiter, PS Arbitrary Map, CC Toner, CC Color Offset, CC Kernel, Auto Levels /
Contrast / Color and Equalize (histograms measured on the CPU, applied on the
GPU) on the GPU; Hue/Saturation colour ranges and Levels' channel controls no
longer fall back to the CPU.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Transform: Use Composition's Shutter Angle / Shutter Angle, sampling the transform across
the shutter via EffectHost::params_at (EffectEnv::shutter carries the comp shutter when
motion blur is on); the GPU path defers to the CPU when blurring.
- Glow: Glow Operation (blend modes) and Glow Colors > Arbitrary Map.
- Cartoon: Advanced > Edge Enhancement (shock-filter sharpening / softening).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Fill: Fill Mask, All Masks, Horizontal / Vertical Feather, Invert outside the mask
(GPU falls back to the CPU when masks are used).
- Refine Soft / Hard Matte: Reduce Chatter (temporal steadying of oscillating edges) and
Use Motion Blur (samples, shutter angle, higher quality) from neighbouring frames.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Lumetri: HSL Secondary key/refine/correction with Show Mask, Hue vs Sat/Hue/Luma,
Luma vs Sat, Sat vs Sat and per-channel RGB curves, High Dynamic Range (HDR White /
Specular), Input LUT and Look (custom .cube + built-in looks).
- Hue/Saturation: Channel Control with Reds..Magentas ranges (range + fall-offs).
- Levels: Channel popup and Red/Green/Blue/Alpha controls; Curves: Channel parameter.
- catalog::param_shown: Effect Controls shows only what a popup selects.
- Timewarp Pixel Motion: block-matching flow (raster::flow::block_flow_window) with
Vector Detail, Smoothing, Error Threshold, Block Size, Weighting, Correct Luminance,
Filtering, Build From One Image; Matte Layer/Channel, Warp Layer, Show, Source Crops.
- GPU falls back to CPU when channel/range controls are used.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
New L3 crate effectcraft-gpu: a wgpu compute backend for the per-frame
compositing walk (layer transforms with the CPU's nearest/bilinear/bicubic
sampling and minification pre-filter, motion-blur accumulation, track
mattes, Preserve Transparency, layer style passes and knockout, all 38
blend modes as a WGSL port of color::blend, 8/16 bpc clamp+quantise,
colour-space conversions). 3D runs, adjustment and wireframe layers run on
the CPU between GPU steps. GPU effects with the CPU semantics: Gaussian,
Fast Box and Directional Blur, Glow, Levels, Curves, Hue/Saturation, Tint,
Fill, Gradient Ramp, Fractal Noise, Drop Shadow, Brightness & Contrast,
Exposure, Invert, Transform (registry gpu badge from effects::GPU_EFFECTS).
render: Backend (Cpu/Gpu/Auto) in RenderOpts, the Accelerator trait and
Renderer::accel, GPU effect chains in the effect stack, hooks for the GPU
walk. Project setting gpu_acceleration (Mercury GPU Acceleration / Software
Only), render.backend command, file.projectSettings renderer. Session and
Render Queue exports carry the accelerator. CLI --gpu and bench --gpu.
Tests compare GPU vs CPU renders (blend modes x bit depths, transforms,
masks, mattes, motion blur, colour management, styles, collapse,
adjustment fallback, every GPU effect) and skip without an adapter.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
