Shader Contract

Defines the interface between runtime and GLSL programs.

Engine Guarantees

The runtime guarantees:

Valid GL context
Bound textures
Standard uniforms:
- uResolution
- uTime
- uFrame
Deterministic sampler ordering

Shader Responsibilities

Shaders must:

Compile under supported GLSL version
Write valid output color
Respect provided sampler bindings

Custom Uniforms

Must be supplied via NodeProps.

Missing values may produce undefined results.

Compilation Model

Compiled lazily
Cached per node
Recompiled only when source changes

Design Boundary

Engine controls execution.
Shaders control visual behavior.