From 3a841ac130f90c607c29aa79288b943bbfe569b1 Mon Sep 17 00:00:00 2001
From: Ray <raysan5@gmail.com>
Date: Sun, 21 May 2023 10:28:04 +0200
Subject: [PATCH] REVIEWED: `GenImagePerlinNoise()`, clamp values #3071

---
 src/rtextures.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/rtextures.c b/src/rtextures.c
index 2d8056d64..875942586 100644
--- a/src/rtextures.c
+++ b/src/rtextures.c
@@ -846,6 +846,10 @@ Image GenImagePerlinNoise(int width, int height, int offsetX, int offsetY, float
             //   octaves    =  6     -- number of "octaves" of noise3() to sum
             float p = stb_perlin_fbm_noise3(nx, ny, 1.0f, 2.0f, 0.5f, 6);
             
+            // Clamp between -1.0f and 1.0f
+            if (p < -1.0f) p = -1.0f;
+            if (p > 1.0f) p = 1.0f;
+            
             // We need to normalize the data from [-1..1] to [0..1]
             float np = (p + 1.0f)/2.0f;