From 95802739b8ccaf9112fe4fe6e496ba7ae4158aae Mon Sep 17 00:00:00 2001 From: skal Date: Fri, 6 Mar 2026 22:53:29 +0100 Subject: feat(effects): add Scratch post-process effect with reusable scratch_lines snippet - src/shaders/render/scratch_lines.wgsl: reusable WGSL snippet registered as "render/scratch_lines"; call scratch_lines(uv, resolution, time)->f32 from any effect. Uses hash_1f from math/noise; 8 lines/frame, ~24fps flicker. - src/effects/scratch.{wgsl,h,cc}: thin Scratch effect wrapping the snippet. - Applied to "intro" and "rotating_cube" sequences as the final step. - 35/35 tests passing. handoff(Gemini): Scratch effect added. render/scratch_lines snippet is reusable. Co-Authored-By: Claude Sonnet 4.6 --- src/effects/scratch_effect.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 src/effects/scratch_effect.h (limited to 'src/effects/scratch_effect.h') diff --git a/src/effects/scratch_effect.h b/src/effects/scratch_effect.h new file mode 100644 index 0000000..fb36a96 --- /dev/null +++ b/src/effects/scratch_effect.h @@ -0,0 +1,20 @@ +// Scratch effect - film scratch overlay post-process +// Reads input buffer, additively blends scratch_lines() on top. + +#pragma once +#include "gpu/effect.h" +#include "gpu/wgpu_resource.h" + +class Scratch : public Effect { + public: + Scratch(const GpuContext& ctx, const std::vector& inputs, + const std::vector& outputs, float start_time, + float end_time); + + void render(WGPUCommandEncoder encoder, const UniformsSequenceParams& params, + NodeRegistry& nodes) override; + + private: + RenderPipeline pipeline_; + BindGroup bind_group_; +}; -- cgit v1.2.3