From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Tue, 20 Jan 2009 18:58:27 +0000 (+0000)
Subject: fixed a serious bug in initialization of frac[][]
X-Git-Tag: xonotic-v0.1.0preview~1932
X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=commitdiff_plain;h=40974a11ff38b178bdae401855213aa244c922cf

fixed a serious bug in initialization of frac[][]


git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@8660 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/fractalnoise.c b/fractalnoise.c
index 1bb1c55a..5d68d196 100644
--- a/fractalnoise.c
+++ b/fractalnoise.c
@@ -157,10 +157,10 @@ float noise4f(float x, float y, float z, float w)
 			r[i] = (int)(rand() * (double)NOISE_SIZE / ((double)RAND_MAX + 1)) & NOISE_MASK;
 			// that & is only needed if RAND_MAX is > the range of double, which isn't the case on most platforms
 	}
-	frac[1][0] = x - floor(x);index[0][0] = ((int)floor(x)) & NOISE_MASK;
+	frac[0][1] = x - floor(x);index[0][0] = ((int)floor(x)) & NOISE_MASK;
 	frac[1][1] = y - floor(y);index[1][0] = ((int)floor(y)) & NOISE_MASK;
-	frac[1][2] = z - floor(z);index[2][0] = ((int)floor(z)) & NOISE_MASK;
-	frac[1][3] = w - floor(w);index[3][0] = ((int)floor(w)) & NOISE_MASK;
+	frac[2][1] = z - floor(z);index[2][0] = ((int)floor(z)) & NOISE_MASK;
+	frac[3][1] = w - floor(w);index[3][0] = ((int)floor(w)) & NOISE_MASK;
 	for (i = 0;i < 4;i++)
 		frac[i][0] = 1 - frac[i][1];
 	for (i = 0;i < 4;i++)