added a missing definition of atanh in GLSL

2019-07-30 16:23:23 +02:00 · 2019-07-30 16:23:23 +02:00 · 8da3556448
parent c9ac8738f6
commit 8da3556448
1 changed files with 2 additions and 0 deletions
--- a/shaders.cpp
+++ b/shaders.cpp
@ -614,6 +614,8 @@ void init() {
      1,       "float acosh(float x) {",
      1,       "  return log(sqrt(x*x - 1.0) + x);",
      1,       "  }",
+      
+      1,       "float atanh(float x) { return (log(1.+x)-log(1.-x))/2.; }",
    
      1,       "float zlevel(vec4 h) {",
      1,       "  return (h[2] < 0.0 ? -1.0 : 1.0) * sqrt(h[2]*h[2] - h[0]*h[0] - h[1]*h[1]);",