From b8d4a815453acac752c6fb3c56d047e39a76fd05 Mon Sep 17 00:00:00 2001 From: skal Date: Sat, 14 Feb 2026 19:05:34 +0100 Subject: feat(gpu): add SDF camera infrastructure and effect base class Add unified camera system for SDF raymarching effects: - CameraParams struct (80 bytes): inv_view matrix + FOV/near/far/aspect - SDFEffect base class: manages camera uniform, provides update_camera() helpers - camera_common.wgsl: getCameraRay(), position/forward/up/right extractors - SDFTestEffect: working example with orbiting camera + animated sphere Refactor effect headers: - Extract class definitions from demo_effects.h to individual .h files - Update includes in .cc files to use specific headers - Cleaner compilation dependencies, faster incremental builds Documentation: - Add SDF_EFFECT_GUIDE.md with complete workflow - Update ARCHITECTURE.md, UNIFORM_BUFFER_GUIDELINES.md - Update EFFECT_WORKFLOW.md, CONTRIBUTING.md Tests: 34/34 passing, SDFTestEffect validated Co-Authored-By: Claude Sonnet 4.5 --- src/effects/gaussian_blur_effect.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 src/effects/gaussian_blur_effect.h (limited to 'src/effects/gaussian_blur_effect.h') diff --git a/src/effects/gaussian_blur_effect.h b/src/effects/gaussian_blur_effect.h new file mode 100644 index 0000000..651c5c3 --- /dev/null +++ b/src/effects/gaussian_blur_effect.h @@ -0,0 +1,32 @@ +// This file is part of the 64k demo project. +// It declares the GaussianBlurEffect. + +#pragma once + +#include "gpu/effect.h" +#include "gpu/uniform_helper.h" + +// Parameters for GaussianBlurEffect (set at construction time) +struct GaussianBlurParams { + float strength = 1.0f; // Default + float strength_audio = 0.5f; // how much to pulse with audio + float stretch = 1.f; // y/x axis ratio + float _pad = 0.; +}; +static_assert(sizeof(GaussianBlurParams) == 16, + "GaussianBlurParams must be 16 bytes for WGSL alignment"); + +class GaussianBlurEffect : public PostProcessEffect { + public: + // Backward compatibility constructor (uses default params) + GaussianBlurEffect(const GpuContext& ctx); + // New parameterized constructor + GaussianBlurEffect(const GpuContext& ctx, const GaussianBlurParams& params); + void render(WGPURenderPassEncoder pass, + const CommonPostProcessUniforms& uniforms) override; + void update_bind_group(WGPUTextureView input_view) override; + + private: + GaussianBlurParams params_; + UniformBuffer params_buffer_; +}; -- cgit v1.2.3