VS:

• input prefix a_, or ve_ (per vertex) / in_ (per instance). To decide
• output: ex_(if followed by FS) or vs_(if followed by another stage)

Tessellation:

• input vs_
• output ex_

FS:

• input: ex_

Uniforms: u_

Uniform buffers: Type name ends in Block, variables prefixed by ub_

Suffixes for spaces:

• _tbn (tangent space)
• _local
• _world
• _view
• _clip (homoegenous 4D space)
• _ndc (after perspective divide)

For texture coordinates:

• uv when normalized texture coordinates
• texel when integer texture coordinates

For vectors:

• Dir for normalized directions
• Ray for segments from A to B (e.g. lightRay, from the shaded fragment to the light).