Lib Defines - Shader API

const float M_PI = 3.14159265;

const float M_2PI = 2.0 * M_PI;

const float M_INV_PI = 0.31830988;

const float M_INV_LOG2 = 1.442695;

const float M_GOLDEN_RATIO = 1.618034;

const int BlendingMode_Disable            =  0;

const int BlendingMode_Replace            =  1;

const int BlendingMode_Normal             =  2;

const int BlendingMode_Darken             =  3;

const int BlendingMode_Multiply           =  4;

const int BlendingMode_ColorBurn          =  5;

const int BlendingMode_LinearBurn         =  6;

const int BlendingMode_Lighten            =  7;

const int BlendingMode_Screen             =  8;

const int BlendingMode_ColorDodge         =  9;

const int BlendingMode_LinearDodge        = 10;

const int BlendingMode_Overlay            = 11;

const int BlendingMode_SoftLight          = 12;

const int BlendingMode_HardLight          = 13;

const int BlendingMode_VividLight         = 14;

const int BlendingMode_LinearLight        = 15;

const int BlendingMode_PinLight           = 16;

const int BlendingMode_Difference         = 17;

const int BlendingMode_Exclusion          = 18;

const int BlendingMode_Tint               = 19;

const int BlendingMode_Saturation         = 20;

const int BlendingMode_Color              = 21;

const int BlendingMode_Value              = 22;

const int BlendingMode_Divide             = 23;

const int BlendingMode_InverseDivide      = 24;

const int BlendingMode_Passthru           = 25;

const int BlendingMode_NM_Combine         = 26;

const int BlendingMode_NM_Oriented        = 27;

const int BlendingMode_NM_InverseOriented = 28;

const int BlendingMode_Subtract           = 29;

const int BlendingMode_InverseSubtract    = 30;

const int BlendingMode_AddSub             = 31;