Vertex Shader Semantics

The syntax for each parameter is type name : semantic

The type is optional, and the semantics are case-insensitive

The semantics are:

• POSITION

  Can be called POSITION, VPOS, or SV_Position
  The type is float3 by default
  The parameter holds the position of the vertex in local space

• NORMAL

  Must be called NORMAL
  The type is float3 by default
  The parameter holds the direction facing away from the surface of the mesh at the given point, in local space

• COLOR

  Can be called COLOR or SV_Target
  The type is float4 by default
  The parameter holds the diffuse colour given to each vertex, this one will depend on the shader

• TEXCOORD

  This one can have an index at the end like TEXCOORD0 or TEXCOORD1
  The type is float2 by default
  The parameter holds the UV coordinates of the given vertex.