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Brandon ThomasandClaude Opus 5.5
485f562e19
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 <[email protected]>