Gallery¶

A curated collection of renders from RayON's built-in scenes, showcasing the range of materials, lighting effects, and geometric complexity the renderer supports.

ScenesMaterialsVisualisation & DebugProgressive Quality

Cornell box — colour bleeding between red and green walls onto the ceiling and white floor spheres — **Cornell Box** — classic test scene. Coloured diffuse walls create colour bleeding on nearby surfaces. Soft shadow from an area light overhead.

Indoor scene with multiple reflective and diffuse spheres — **Indoor Spheres** — assorted dielectric, metallic, and diffuse spheres in an enclosed room with area lighting.

Scene with spheres arranged on a reflective floor — **ISC Spheres** — multi-material arrangement with strong inter-reflections between specular surfaces.

Golf ball displacement mapping — dimpled surface under directional light — **Golf Ball** — procedural displacement mapping creates the characteristic dimple pattern on a sphere. The BRDF captures specular highlights across the surface microstructure.

Wide view of diverse material spheres on a brushed-metal ground plane — 4K master render — **4K Master Render** — full default scene at 4K resolution. Glass, rough mirror, Lambertian, tinted metal, and light-emitting materials share the scene with SDF shapes in the background.

Anisotropic metals scene at 512 SPP — directional highlight streaks fully resolved — **Anisotropic Metals — 512 SPP** — directional highlight streaks fully resolved across all roughness and anisotropy levels. Rendered with the CUDA path tracer.

High-roughness metallic spheres showing warm specular highlights — **Tinted Rough Mirrors** — gold, copper, and steel preset tints. Roughness controls how blurry the reflections appear (0 = perfect mirror, 1 ≈ diffuse).

Alternate metallic render with different lighting angle — **Metals — Alternate View** — the same scene relit from a different angle. The highlight shape reveals the roughness distribution on each sphere.

Glass dielectric spheres with refractive caustics next to metallic surfaces — **Dielectrics & Metals** — glass spheres use Snell's law for refraction and Schlick's approximation for the reflection/transmission ratio at grazing angles.

Rough mirror with configurable roughness parameter — **Rough Mirror Development Render** — early validation render showing the fuzzy reflection model. The reflected image becomes progressively blurred as roughness increases from left to right.

Improved cosine-weighted Lambertian scattering — **Cosine-weighted Lambertian** — improved hemisphere sampling (see Sampling). Noise is concentrated in shadow rather than spread uniformly.

Plastic shading — diffuse base with specular highlight layer — **Plastic Shading** — two-layer model: a Lambertian base coat with a specular clearcoat layer on top. The highlight is view-dependent.

Normal visualisation mode — surfaces coloured by surface normal direction — **Normal Visualisation** — the `ShowNormals` material maps surface normals directly to RGB: *R=X, G=Y, B=Z*. Useful for debugging geometry orientation and smooth normals on mesh imports.

Depth of field with bokeh blur — **Depth of Field** — aperture and focus distance are adjustable at runtime via ImGui sliders in interactive mode. The lens model is a thin lens approximation.

Interactive SDL2 window showing real-time accumulative path tracing at 100 Hz — **Interactive Mode** — SDL2 window at ~100 Hz with Dear ImGui overlaid. The sample counter and convergence indicator are visible in the top-right panel.

Anisotropic metals scene rendered at increasing sample counts. Every doubling halves Monte Carlo noise — error decays as \(\mathcal{O}(1/\sqrt{N})\). The anisotropic specular lobes are particularly sensitive to sample count.