atan2 - HLSL
Returns the arctangent of x/y. The signs of x and y are used to determine the quadrant of the return values in the range [-pi, pi]. atan2 is well-defined for every point other than the origin, even if y equals 0 and x does not equal 0.
Syntax
Where:
| Name |
In/Out |
Template Type |
Component Type |
Size |
| x |
in |
scalar, vector, or matrix |
float |
any |
| y |
in |
same as input x |
float |
same dimension(s) as input x |
| ret |
out |
same as input x |
float |
same dimension(s) as input x |
Minimum Shader Version
This intrinsic function is supported in the following (or above) shader versions:
| Vertex Shader |
Pixel Shader |
| vs_1_1 |
ps_2_0 |
See Also
HLSL Intrinsic Functions
