Documentation

Unity Engine

User Manual

Script Reference

Unity Engine

HLSL semantics reference

Reference for supported High-Level Shader Language (HLSL) semantics in Unity.
Read time 1 minuteLast updated 20 days ago
Explore the semantics you can use to input mesh data into custom shaders in High-Level Shader Language (HLSL) in Unity.

Semantic

Description

Type

POSITION
The vertex position.
float3
or 
float4
NORMAL
The vertex normal.
float3
TEXCOORD0
The first UV coordinates.
float2
, 
float3
, or 
float4
TEXCOORD1
The second UV coordinates.
float2
, 
float3
, or 
float4
TEXCOORD2
The third UV coordinates.
float2
, 
float3
, or 
float4
TEXCOORD3
The fourth UV coordinates.
float2
, 
float3
, or 
float4
TANGENT
The tangent vector used for normal mapping.
float4
COLOR
The per-vertex color.
float4
VPOS
The pixel position in screen space. You can use 
VPOS
only in the fragment shader.		Use 
UNITY_VPOS_TYPE
for cross-platform compatibility, which is 
float4
on most platforms.
VFACE
Indicates whether the pixel surface is facing the camera.
float
SV_VertexID
The index of the vertex. You can't use 
SV_VertexID
in Surface Shaders.
uint

Additional resources