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/dports/graphics/blender/blender-2.91.0/intern/cycles/kernel/closure/
H A Dbssrdf.h270 float exp_r_3 = expf(-r / 3.0f); in bssrdf_burley_root_find() local
271 float exp_r = exp_r_3 * exp_r_3 * exp_r_3; in bssrdf_burley_root_find()
272 float f = 1.0f - 0.25f * exp_r - 0.75f * exp_r_3 - xi; in bssrdf_burley_root_find()
273 float f_ = 0.25f * exp_r + 0.25f * exp_r_3; in bssrdf_burley_root_find()