기술 자료

Unity Engine

User Manual

Script Reference

Unity Engine

Example of a DOTS Instancing shader that accesses constant data in URP

An example of accessing constant color data in a DOTS Instancing shader.
읽는 시간 1분최근 업데이트: 한 달 전
In this example:
  • The metadata value for 
    Color
    is 
    0x00001000
    .
  • The instance index is 
    5
    .
  • Data for instance 0 starts at address 0x1000.
  • The most significant bit is not set so data for instance 5 is at the same address as instance 0.
Because the most significant bit is not set, the accessor macros that fall back to defaults don't access 
unity_DOTSInstanceData
. This means that:
  • c0
    will contain the value from 
    unity_DOTSInstanceData
    address 
    0x1000
    .
  • c1
    will contain the value of the regular material property Color, and cause a compile error if the Color property doesn't exist.
  • c2
    will contain 
    (1, 2, 3, 4)
    because that was passed as the explicit default value.
void ExampleConstant(){    // rawMetadataValue will contain 0x00001000    uint rawMetadataValue = UNITY_DOTS_INSTANCED_METADATA_NAME(float4, Color);    float4 c0 = UNITY_ACCESS_DOTS_INSTANCED_PROP(float4, Color);    float4 c1 = UNITY_ACCESS_DOTS_INSTANCED_PROP_WITH_DEFAULT(float4, Color);    float4 c2 = UNITY_ACCESS_DOTS_INSTANCED_PROP_WITH_CUSTOM_DEFAULT(float4, Color, float4(1, 2, 3, 4));}