max.3Cg

Langue: en

Version: 339915 (ubuntu - 24/10/10)

Section: 3 (Bibliothèques de fonctions)

Sommaire

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