USE_HDR = 1
USE_LIFTGAMMAGAIN = 1
USE_TONEMAP = 1
SMAA_THRESHOLD = 0.20             // USE_SMAA_ANTIALIASING
SMAA_MAX_SEARCH_STEPS = 98        // USE_SMAA_ANTIALIASING
SMAA_MAX_SEARCH_STEPS_DIAG = 16   // USE_SMAA_ANTIALIASING
SMAA_CORNER_ROUNDING = 100        // USE_SMAA_ANTIALIASING
HDRPower = 1.50                   // USE_HDR
radius2 = 0.85                    // USE_HDR
RGB_Gamma = float3(0.85, 0.90, 1.000)// USE_LIFTGAMMAGAIN
Gamma = 1.25                      // USE_TONEMAP
Exposure = 0.25                   // USE_TONEMAP
Defog = 0.00                      // USE_TONEMAP