| Value | Meaning |
|---|---|
| Never0 | A new value never passes the comparison test. |
| Less1 | A new value passes the comparison test if it is less than the existing value. |
| Equal2 | A new value passes the comparison test if it is equal to the existing value. |
| LessEqual3 | A new value passes the comparison test if it is less than or equal to the existing value. |
| Greater4 | A new value passes the comparison test if it is greater than the existing value. |
| NotEqual5 | A new value passes the comparison test if it is not equal to the existing value. |
| GreaterEqual6 | A new value passes the comparison test if it is greater than or equal to the existing value. |
| Always7 | A new value always passes the comparison test. |
Options used to specify how a sample compare operation should be performed on a depth texture.