From 5320dd7f282fe2ecda823aecea399a49624a76a6 Mon Sep 17 00:00:00 2001
From: rakesh <raki7445@gmail.com>
Date: Wed, 21 Jan 2026 21:20:18 +0530
Subject: [PATCH 1/3] Normalize strands noise output range to [0,1] in GLSL and
 WGSL

---
 src/webgl/shaders/functions/noise3DGLSL.glsl | 3 +--
 src/webgpu/shaders/functions/noise3DWGSL.js  | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/webgl/shaders/functions/noise3DGLSL.glsl b/src/webgl/shaders/functions/noise3DGLSL.glsl
index e0bca75aa7..af2a96c481 100644
--- a/src/webgl/shaders/functions/noise3DGLSL.glsl
+++ b/src/webgl/shaders/functions/noise3DGLSL.glsl
@@ -104,6 +104,5 @@ float noise(vec3 st, int octaves, float ampFalloff) {
     frequency *= 2.0;
     amplitude *= ampFalloff;
   }
-
-  return result;
+  return (result + 1.0) * 0.5;
 }
diff --git a/src/webgpu/shaders/functions/noise3DWGSL.js b/src/webgpu/shaders/functions/noise3DWGSL.js
index 597da1082a..d696655c6f 100644
--- a/src/webgpu/shaders/functions/noise3DWGSL.js
+++ b/src/webgpu/shaders/functions/noise3DWGSL.js
@@ -102,6 +102,5 @@ fn noise(st: vec3<f32>, octaves: i32, ampFalloff: f32) -> f32 {
     frequency *= 2.0;
     amplitude *= ampFalloff;
   }
-
-  return result;
+  return result * 0.5 + 0.5;
 }`;
\ No newline at end of file

From d81c615cce14eaf312e3ad97e4398069b740a3f3 Mon Sep 17 00:00:00 2001
From: rakesh <raki7445@gmail.com>
Date: Thu, 22 Jan 2026 09:53:36 +0530
Subject: [PATCH 2/3] Use consistent normalization math for strands noise
 backends

---
 src/webgpu/shaders/functions/noise3DWGSL.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/webgpu/shaders/functions/noise3DWGSL.js b/src/webgpu/shaders/functions/noise3DWGSL.js
index d696655c6f..1fb96f5fc6 100644
--- a/src/webgpu/shaders/functions/noise3DWGSL.js
+++ b/src/webgpu/shaders/functions/noise3DWGSL.js
@@ -102,5 +102,5 @@ fn noise(st: vec3<f32>, octaves: i32, ampFalloff: f32) -> f32 {
     frequency *= 2.0;
     amplitude *= ampFalloff;
   }
-  return result * 0.5 + 0.5;
+  return (result + 1.0) * 0.5;
 }`;
\ No newline at end of file

From 6f23221aa3227d5c710964ada4fdeba29729de36 Mon Sep 17 00:00:00 2001
From: Dave Pagurek <dave@davepagurek.com>
Date: Sat, 24 Jan 2026 14:33:30 -0500
Subject: [PATCH 3/3] Update flags for CI to see if that fixes webgl context
 creation

---
 vitest.workspace.mjs | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/vitest.workspace.mjs b/vitest.workspace.mjs
index 5cc3794706..08b80a2917 100644
--- a/vitest.workspace.mjs
+++ b/vitest.workspace.mjs
@@ -46,13 +46,12 @@ export default defineWorkspace([
           capabilities: process.env.CI ? {
             'goog:chromeOptions': {
               args: [
-                '--no-sandbox',
                 '--headless=new',
-                '--enable-unsafe-webgpu',
-                '--use-vulkan=swiftshader',
-                '--use-webgpu-adapter=swiftshader',
-                '--use-angle=vulkan',
                 '--no-sandbox',
+                '--enable-webgl',
+                '--use-gl=angle',
+                '--use-angle=swiftshader-webgl',
+                '--enable-unsafe-swiftshader',
               ]
             }
           } : undefined
@@ -105,7 +104,6 @@ export default defineWorkspace([
                 '--use-vulkan=swiftshader',
                 '--use-webgpu-adapter=swiftshader',
                 '--use-angle=vulkan',
-                '--no-sandbox',
               ]
             }
           } : undefined
@@ -116,4 +114,4 @@ export default defineWorkspace([
       }
     }
   },
-]);
\ No newline at end of file
+]);