clip
Keywords: clip, NVIDIA, NVIDIA Cg Toolkit, Cg Toolkit, Shader, Shader Programming, GPU Shader Programming, GPU Program

> ## Name

> clip - conditionally kill a pixel before output

> ## Synopsis

>     void clip(float4 x);
>     void clip(float3 x);
>     void clip(float2 x);
>     void clip(float1 x);
>     void clip(float  x);

> ## Parameters

> x
>   Vector/scalar condition to clip on

> ## Description

> kills the current pixel output if any component of the given vector, or the given scalar, is negative

> ## Reference Implementation

> clip is equivalent to

>     void clip(float4 x)
>     {
>       if (any(x < 0))
>         discard;
>     }

> ## Profile Support

> clip is supported in all pixel/fragment profiles.

> ## See Also