Refactored Forward PBR pipeline. Eliminates 3x shader variant duplication by using parameterized ShaderVariant structs. No PipelineContext class — all mutable state lives in the object-expression closure.

Convenience values for PostProcessConfig3D.

Configuration for post-processing in a 3D pipeline.

A single post-processing pass applied to the rendered 3D scene.

Built-in GLSL shader generators for the Forward PBR pipeline.

Manages a texture atlas for multiple shadow maps. Supports directional, point (cubemap), and spot light shadows.

Configuration for the shadow atlas system.

Global shadow bias configuration.

Data for a single shadow caster in the atlas.

Unique identifier for a shadow caster in the atlas.

Type of shadow caster determines projection and face count.

Strategy for determining the origin point of shadow maps.