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diff --git a/indra/newview/noise.h b/indra/newview/noise.h
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+++ b/indra/newview/noise.h
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+/** 
+ * @file noise.h
+ * @brief Perlin noise routines for procedural textures, etc
+ *
+ * Copyright (c) 2000-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#ifndef LL_NOISE_H
+#define LL_NOISE_H
+
+#include "llmath.h"
+
+F32 turbulence2(F32 *v, F32 freq);
+F32 turbulence3(float *v, float freq);
+F32 clouds3(float *v, float freq);
+F32 noise2(float *vec);
+F32 noise3(float *vec);
+
+inline F32 bias(F32 a, F32 b)
+{
+	return (F32)pow(a, (F32)(log(b) / log(0.5f)));
+}
+
+inline F32 gain(F32 a, F32 b)
+{
+	F32 p = (F32) (log(1.f - b) / log(0.5f));
+
+	if (a < .001f)
+		return 0.f;
+	else if (a > .999f)
+		return 1.f;
+	if (a < 0.5f)
+		return (F32)(pow(2 * a, p) / 2.f);
+	else
+		return (F32)(1.f - pow(2 * (1.f - a), p) / 2.f);
+}
+
+inline F32 turbulence2(F32 *v, F32 freq)
+{
+	F32 t, vec[2];
+
+	for (t = 0.f ; freq >= 1.f ; freq *= 0.5f) {
+		vec[0] = freq * v[0];
+		vec[1] = freq * v[1];
+		t += noise2(vec)/freq;
+	}
+	return t;
+}
+
+inline F32 turbulence3(F32 *v, F32 freq)
+{
+	F32 t, vec[3];
+
+	for (t = 0.f ; freq >= 1.f ; freq *= 0.5f) {
+		vec[0] = freq * v[0];
+		vec[1] = freq * v[1];
+		vec[2] = freq * v[2];
+		t += noise3(vec)/freq;
+//		t += fabs(noise3(vec)) / freq;				// Like snow - bubbly at low frequencies
+//		t += sqrt(fabs(noise3(vec))) / freq;		// Better at low freq
+//		t += (noise3(vec)*noise3(vec)) / freq;		
+	}
+	return t;
+}
+
+inline F32 clouds3(F32 *v, F32 freq)
+{
+	F32 t, vec[3];
+
+	for (t = 0.f ; freq >= 1.f ; freq *= 0.5f) {
+		vec[0] = freq * v[0];
+		vec[1] = freq * v[1];
+		vec[2] = freq * v[2];
+		//t += noise3(vec)/freq;
+//		t += fabs(noise3(vec)) / freq;				// Like snow - bubbly at low frequencies
+//		t += sqrt(fabs(noise3(vec))) / freq;		// Better at low freq
+		t += (noise3(vec)*noise3(vec)) / freq;		
+	}
+	return t;
+}
+
+/* noise functions over 1, 2, and 3 dimensions */
+
+#define B 0x100
+#define BM 0xff
+
+#define N 0x1000
+#define NF32 (4096.f)
+#define NP 12   /* 2^N */
+#define NM 0xfff
+
+extern S32 p[B + B + 2];
+extern F32 g3[B + B + 2][3];
+extern F32 g2[B + B + 2][2];
+extern F32 g1[B + B + 2];
+extern S32 gNoiseStart;
+
+static void init(void);
+
+#define s_curve(t) ( t * t * (3.f - 2.f * t) )
+
+#define lerp_m(t, a, b) ( a + t * (b - a) )
+
+#define setup_noise(i,b0,b1,r0,r1)\
+	t = vec[i] + N;\
+	b0 = (lltrunc(t)) & BM;\
+	b1 = (b0+1) & BM;\
+	r0 = t - lltrunc(t);\
+	r1 = r0 - 1.f;
+
+
+inline void fast_setup(F32 vec, U8 &b0, U8 &b1, F32 &r0, F32 &r1)
+{
+	S32 t_S32;
+
+	r1	= vec + NF32;
+	t_S32 = lltrunc(r1);
+	b0 = (U8)t_S32;
+	b1 = b0 + 1;
+	r0 = r1 - t_S32;
+	r1 = r0 - 1.f;
+}
+
+inline F32 noise1(const F32 arg)
+{
+	int bx0, bx1;
+	F32 rx0, rx1, sx, t, u, v, vec[1];
+
+	vec[0] = arg;
+	if (gNoiseStart) {
+		gNoiseStart = 0;
+		init();
+	}
+
+	setup_noise(0, bx0,bx1, rx0,rx1);
+
+	sx = s_curve(rx0);
+
+	u = rx0 * g1[ p[ bx0 ] ];
+	v = rx1 * g1[ p[ bx1 ] ];
+
+	return lerp_m(sx, u, v);
+}
+
+inline F32 fast_at2(F32 rx, F32 ry, F32 *q)
+{
+	return rx * (*q) + ry * (*(q + 1));
+}
+
+
+
+inline F32 fast_at3(F32 rx, F32 ry, F32 rz, F32 *q)
+{
+	return rx * (*q) + ry * (*(q + 1)) + rz * (*(q + 2));
+}
+
+
+
+inline F32 noise3(F32 *vec)
+{
+	U8 bx0, bx1, by0, by1, bz0, bz1;
+	S32 b00, b10, b01, b11;
+	F32 rx0, rx1, ry0, ry1, rz0, rz1, *q, sy, sz, a, b, c, d, t, u, v;
+	S32 i, j;
+
+	if (gNoiseStart) {
+		gNoiseStart = 0;
+		init();
+	}
+
+	fast_setup(*vec, bx0,bx1, rx0,rx1);
+	fast_setup(*(vec + 1), by0,by1, ry0,ry1);
+	fast_setup(*(vec + 2), bz0,bz1, rz0,rz1);
+
+	i = p[ bx0 ];
+	j = p[ bx1 ];
+
+	b00 = p[ i + by0 ];
+	b10 = p[ j + by0 ];
+	b01 = p[ i + by1 ];
+	b11 = p[ j + by1 ];
+
+	t  = s_curve(rx0);
+	sy = s_curve(ry0);
+	sz = s_curve(rz0);
+
+	q = g3[ b00 + bz0 ]; 
+	u = fast_at3(rx0,ry0,rz0,q);
+	q = g3[ b10 + bz0 ];
+	v = fast_at3(rx1,ry0,rz0,q);
+	a = lerp_m(t, u, v);
+
+	q = g3[ b01 + bz0 ];
+	u = fast_at3(rx0,ry1,rz0,q);
+	q = g3[ b11 + bz0 ];
+	v = fast_at3(rx1,ry1,rz0,q);
+	b = lerp_m(t, u, v);
+
+	c = lerp_m(sy, a, b);
+
+	q = g3[ b00 + bz1 ];
+	u = fast_at3(rx0,ry0,rz1,q);
+	q = g3[ b10 + bz1 ];
+	v = fast_at3(rx1,ry0,rz1,q);
+	a = lerp_m(t, u, v);
+
+	q = g3[ b01 + bz1 ];
+	u = fast_at3(rx0,ry1,rz1,q);
+	q = g3[ b11 + bz1 ];
+	v = fast_at3(rx1,ry1,rz1,q);
+	b = lerp_m(t, u, v);
+
+	d = lerp_m(sy, a, b);
+
+	return lerp_m(sz, c, d);
+}
+
+
+/*
+F32 noise3(F32 *vec)
+{
+	int bx0, bx1, by0, by1, bz0, bz1, b00, b10, b01, b11;
+	F32 rx0, rx1, ry0, ry1, rz0, rz1, *q, sy, sz, a, b, c, d, t, u, v;
+	S32 i, j;
+
+	if (gNoiseStart) {
+		gNoiseStart = 0;
+		init();
+	}
+
+	setup_noise(0, bx0,bx1, rx0,rx1);
+	setup_noise(1, by0,by1, ry0,ry1);
+	setup_noise(2, bz0,bz1, rz0,rz1);
+
+	i = p[ bx0 ];
+	j = p[ bx1 ];
+
+	b00 = p[ i + by0 ];
+	b10 = p[ j + by0 ];
+	b01 = p[ i + by1 ];
+	b11 = p[ j + by1 ];
+
+	t  = s_curve(rx0);
+	sy = s_curve(ry0);
+	sz = s_curve(rz0);
+
+#define at3(rx,ry,rz) ( rx * q[0] + ry * q[1] + rz * q[2] )
+
+	q = g3[ b00 + bz0 ] ; u = at3(rx0,ry0,rz0);
+	q = g3[ b10 + bz0 ] ; v = at3(rx1,ry0,rz0);
+	a = lerp_m(t, u, v);
+
+	q = g3[ b01 + bz0 ] ; u = at3(rx0,ry1,rz0);
+	q = g3[ b11 + bz0 ] ; v = at3(rx1,ry1,rz0);
+	b = lerp_m(t, u, v);
+
+	c = lerp_m(sy, a, b);
+
+	q = g3[ b00 + bz1 ] ; u = at3(rx0,ry0,rz1);
+	q = g3[ b10 + bz1 ] ; v = at3(rx1,ry0,rz1);
+	a = lerp_m(t, u, v);
+
+	q = g3[ b01 + bz1 ] ; u = at3(rx0,ry1,rz1);
+	q = g3[ b11 + bz1 ] ; v = at3(rx1,ry1,rz1);
+	b = lerp_m(t, u, v);
+
+	d = lerp_m(sy, a, b);
+
+	return lerp_m(sz, c, d);
+}
+*/
+
+static void normalize2(F32 v[2])
+{
+	F32 s;
+
+	s = 1.f/(F32)sqrt(v[0] * v[0] + v[1] * v[1]);
+	v[0] = v[0] * s;
+	v[1] = v[1] * s;
+}
+
+static void normalize3(F32 v[3])
+{
+	F32 s;
+
+	s = 1.f/(F32)sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
+	v[0] = v[0] * s;
+	v[1] = v[1] * s;
+	v[2] = v[2] * s;
+}
+
+static void init(void)
+{
+	int i, j, k;
+
+	for (i = 0 ; i < B ; i++) {
+		p[i] = i;
+
+		g1[i] = (F32)((rand() % (B + B)) - B) / B;
+
+		for (j = 0 ; j < 2 ; j++)
+			g2[i][j] = (F32)((rand() % (B + B)) - B) / B;
+		normalize2(g2[i]);
+
+		for (j = 0 ; j < 3 ; j++)
+			g3[i][j] = (F32)((rand() % (B + B)) - B) / B;
+		normalize3(g3[i]);
+	}
+
+	while (--i) {
+		k = p[i];
+		p[i] = p[j = rand() % B];
+		p[j] = k;
+	}
+
+	for (i = 0 ; i < B + 2 ; i++) {
+		p[B + i] = p[i];
+		g1[B + i] = g1[i];
+		for (j = 0 ; j < 2 ; j++)
+			g2[B + i][j] = g2[i][j];
+		for (j = 0 ; j < 3 ; j++)
+			g3[B + i][j] = g3[i][j];
+	}
+}
+
+#undef B
+#undef BM
+#undef N
+#undef NF32
+#undef NP
+#undef NM
+
+#endif // LL_NOISE_