Functions

A function is the building block for a shader created in the high-level language. If you prefer to write shaders in a C-style language instead of in assembly language, you will want to write functions.

Syntax

type id ( [ parameters ] )  
    { body }

Functions do not change parameter values in an effect.

• type - Any valid High-Level Shader Language type.
• id - A unique identifier. See IDs and Semantics.
• parameters - Function parameters.
• body - The body of the function.

Functions are built from the high-level language. See High-Level Shader Language.