xfy
8931904495
Add planets as ray-traced spheres inside the RK4 geodesic loop. A new planets.wgsl shader tests each integrator segment against a storage buffer of SphereData (center/radius/color/emissive) and composites hits front-to-back alongside the accretion disk. Lambert shading with a fixed light direction; emissive flag bypasses shading. - assets/shaders/planets.wgsl: segment-sphere intersection + shading - src/scene/: Planet component, upload_planets system, default planet - black_hole.wgsl: wire planet_hit into the compositing loop - geodesic_schwarzschild.wgsl: replace tuple return with Deriv struct