*背面剔除

1 files changed, 1 insertions, 2 deletions

diff --git a/src/math/math.c b/src/math/math.c
index 4cca29e..7d731f8 100644
--- a/src/math/math.c
+++ b/src/math/math.c
@@ -5,14 +5,13 @@ char printbuffer[2048] = { 0 };
 float rsqrt(float number) {
 	long i;
 	float x2, y;
-	const float threehalfs = 1.5F;
 
 	x2 = number * 0.5F;
 	y = number;
 	i = *(long *)&y;
 	i = 0x5f3759df - (i >> 1);
 	y = *(float *)&i;
-	y = y * (threehalfs - (x2 * y * y));
+	y = y * (1.5F - (x2 * y * y));
 	return y;
 }