Module glyph_depth_effects 

Depth-aware effects for 3D glyphs: self-shadowing, ambient occlusion in concavities, rim lighting for readability, and subsurface scattering.

Structs

DepthEffectsConfig

Constants

RIM_LIGHT_GLSL

Fresnel rim light in GLSL.

SELF_SHADOW_GLSL

Self-shadow computation in GLSL.

SSAO_GLSL

Screen-space AO kernel sampling in GLSL.

SUBSURFACE_GLSL

Subsurface scattering approximation in GLSL.

Functions

apply_depth_effects

Apply all depth effects to a pixel’s final color (CPU reference implementation).

compute_rim_light

Compute Fresnel-based rim lighting for glyph silhouette readability. Rim light is strongest at glancing angles (normal ⊥ view direction).

compute_self_shadow

Self-shadow factor: front faces facing away from the light are shadowed. Returns 0.0 (fully shadowed) to 1.0 (fully lit).

compute_ssao_for_glyph

Compute ambient occlusion for a point in a glyph concavity. neighbors are nearby surface positions. Points surrounded by geometry receive more occlusion.

compute_subsurface

Compute subsurface scattering approximation for thin glyph parts. Light wraps around thin geometry, creating a translucent glow.