NAME

max - returns the maximum of two scalars or each respective component of two vectors

SYNOPSIS

  float  max( float  a, float  b );
  float1 max( float1 a, float1 b );
  float2 max( float2 a, float2 b );
  float3 max( float3 a, float3 b );
  float4 max( float4 a, float4 b );
 
  half   max( half  a, half  b );
  half1  max( half1 a, half1 b );
  half2  max( half2 a, half2 b );
  half3  max( half3 a, half3 b );
  half4  max( half4 a, half4 b );
 
  fixed  max( fixed  a, fixed  b );
  fixed1 max( fixed1 a, fixed1 b );
  fixed2 max( fixed2 a, fixed2 b );
  fixed3 max( fixed3 a, fixed3 b );
  fixed4 max( fixed4 a, fixed4 b );

PARAMETERS

a

Scalar or vector.

b

Scalar or vector.

DESCRIPTION

Returns the maximum of two same-typed scalars a and b or the respective components of two same-typed vectors a and b. The result is a three-component vector.

REFERENCE IMPLEMENTATION

max for float3 vectors could be implemented this way:

  float3 max(float3 a, float3 b)
  {
    return float3(a.x > b.x ? a.x : b.x, 
                  a.y > b.y ? a.y : b.y, 
                  a.z > b.z ? a.z : b.z);
  }

PROFILE SUPPORT

max is supported in all profiles. max is implemented as a compiler built-in.

Support in the fp20 is limited.

SEE ALSO

clamp, min