更新pow22算法

2020-01-20 17:05:13 +08:00 · 2020-01-20 17:05:13 +08:00 · 8f024e1598
commit 8f024e1598
parent e2cf0d6041
1 changed files with 2 additions and 4 deletions
--- a/inc/hgl/math/FastTriangle.h
+++ b/inc/hgl/math/FastTriangle.h
@ -22,12 +22,10 @@ namespace hgl

    /**
     * 近似Pow2.2，使用此函数等于pow(x,2.2)
-     * The MIT License
-     * Copyright © 2019 Inigo Quilez
     */
-    double inline ApproxPow22(double x)
+    double inline LPow22(double x)
    {
-        return ((exp2(x)-1.0)-x*0.693147)*3.258891;
+        return x*(1.12*x - 0.12);
    }
 }//namespace hgl
 #endif//HGL_ALGORITHM_MATH_FAST_TRIANGLE_FUNCTION_INCLUDE