Unityshader Foundation

Common semantics in vertex shader input structures

• POSITION--------- Vertex position in model space , Usually float4 type
• NORMAL--------- Vertex normals , Usually float3 type
• TANGENT-------- Vertex tangent , Usually float4 type
• TEXCOORDn----- The texture coordinates of the vertex ,TEXCOORD0 Represents the first set of coordinate textures , By analogy , Usually float2,float4 type
• COLOR----- Vertex color , Usually fixed4 or float4 type

Common semantics in vertex shader output structures

• SV_POSITION------ Vertex coordinates in clipping space , The structure must contain a variable modified with this semantics . Equate to DX9 Medium POSITION.
• COLOR0------ Usually used to output the first set of vertex colors , It's not necessary
• COLOR1------ Usually used to output a second set of vertex colors , It's not necessary
• TEXCOORD0-TEXCOORD7------- Usually used to output texture coordinates , It's not necessary

Semantics commonly used in slice shader output （SV_Target--- The output value will be stored in the render target （render target） in . Equate to DX9 in COLOR semantics .）