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normalize.3Cg

Langue: en

Version: 343225 (ubuntu - 24/10/10)

Section: 3 (Bibliothèques de fonctions)

normalize - normalizes a vector

   float normalize(float v);
   float normalize(float1 v);
   float normalize(float2 v);
   float normalize(float3 v);
   float normalize(float4 v);

   half normalize(half v);
   half normalize(half1 v);
   half normalize(half2 v);
   half normalize(half3 v);
   half normalize(half4 v);

   fixed normalize(fixed v);
   fixed normalize(fixed1 v);
   fixed normalize(fixed2 v);
   fixed normalize(fixed3 v);
   fixed normalize(fixed4 v);

Returns the normalized version of a vector, meaning a vector in the same direction as the original vector but with a Euclidean length of one.

normalize for a float3 vector could be implemented like this.

   float3 normalize(float3 v)
   {
     return rsqrt(dot(v,v))*v;
   }

normalize is supported in all profiles except fp20.