From 225ff0313c5021c3f1ec2bf5dd61114032b925a7 Mon Sep 17 00:00:00 2001 From: skal Date: Tue, 10 Feb 2026 18:19:30 +0100 Subject: feat: Add Scene1 effect from ShaderToy (raymarching cube & sphere) Converted ShaderToy shader (Saturday cubism experiment) to Scene1Effect following EFFECT_WORKFLOW.md automation guidelines. **Changes:** - Created Scene1Effect (.h, .cc) as scene effect (not post-process) - Converted GLSL to WGSL with manual fixes: - Replaced RESOLUTION/iTime with uniforms.resolution/time - Fixed const expressions (normalize not allowed in const) - Converted mainImage() to fs_main() return value - Manual matrix rotation for scene transformation - Added shader asset to workspaces/main/assets.txt - Registered in CMakeLists.txt (both GPU_SOURCES sections) - Added to demo_effects.h and shaders declarations - Added to timeline.seq at 22.5s for 10s duration - Added to test_demo_effects.cc scene_effects list **Shader features:** - Raymarching cube and sphere with ground plane - Reflections and soft shadows - Sky rendering with sun and horizon glow - ACES tonemapping and sRGB output - Time-based rotation animation **Tests:** All effects tests passing (5/9 scene, 9/9 post-process) Co-Authored-By: Claude Sonnet 4.5 --- src/gpu/effects/scene1_effect.cc | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 src/gpu/effects/scene1_effect.cc (limited to 'src/gpu/effects/scene1_effect.cc') diff --git a/src/gpu/effects/scene1_effect.cc b/src/gpu/effects/scene1_effect.cc new file mode 100644 index 0000000..a6733b7 --- /dev/null +++ b/src/gpu/effects/scene1_effect.cc @@ -0,0 +1,28 @@ +// This file is part of the 64k demo project. +// Scene1 effect - ShaderToy conversion (raymarching scene) + +#include "gpu/demo_effects.h" +#include "gpu/gpu.h" + +Scene1Effect::Scene1Effect(const GpuContext& ctx) : Effect(ctx) { + ResourceBinding bindings[] = {{uniforms_.get(), WGPUBufferBindingType_Uniform}}; + pass_ = gpu_create_render_pass(ctx_.device, ctx_.format, scene1_shader_wgsl, + bindings, 1); + pass_.vertex_count = 3; +} + +void Scene1Effect::render(WGPURenderPassEncoder pass, float t, float b, + float i, float a) { + CommonPostProcessUniforms u = { + .resolution = {(float)width_, (float)height_}, + ._pad = {0.0f, 0.0f}, + .aspect_ratio = a, + .time = t, + .beat = b, + .audio_intensity = i, + }; + uniforms_.update(ctx_.queue, u); + wgpuRenderPassEncoderSetPipeline(pass, pass_.pipeline); + wgpuRenderPassEncoderSetBindGroup(pass, 0, pass_.bind_group, 0, nullptr); + wgpuRenderPassEncoderDraw(pass, pass_.vertex_count, 1, 0, 0); +} -- cgit v1.2.3