From 2a5186af2dce81d7d630f2969cfc5bcf2e2ddd66 Mon Sep 17 00:00:00 2001
From: yum <yum.food.vr@gmail.com>
Date: Tue, 25 Mar 2025 17:03:16 -0700
Subject: Add letter grid gimmick

---
 math.cginc | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

(limited to 'math.cginc')

diff --git a/math.cginc b/math.cginc
index 2f05054..f44aa74 100644
--- a/math.cginc
+++ b/math.cginc
@@ -55,7 +55,7 @@ float rand3(float3 p)
     return frac(rand3_hash(p).x);
 }
 
-float2 domainWarp1(float x, uint octaves, float strength, float scale)
+float2 domainWarp1(float x, uint octaves, float strength, float scale, float speed)
 {
   [loop]
   for (uint i = 0; i < octaves; i++) {
@@ -66,14 +66,14 @@ float2 domainWarp1(float x, uint octaves, float strength, float scale)
   return x;
 }
 
-float2 domainWarp2(float2 uv, uint octaves, float strength, float scale)
+float2 domainWarp2(float2 uv, uint octaves, float strength, float scale, float speed)
 {
   uv *= 0.001;
   [loop]
   for (uint i = 0; i < octaves; i++) {
     uv += strength * frac(sin(float2(
       dot(uv * scale, float2(12.9898, 78.233)),
-      dot(uv * scale, float2(36.7539, 50.3658))) * 43758.5453123));
+      dot(uv * scale, float2(36.7539, 50.3658)))) * 43758.5453123);
   }
   uv *= 1000;
   return uv;
@@ -198,4 +198,13 @@ float3 luminance(float3 color) {
   return dot(color, float3(0.2126, 0.7152, 0.0722));
 }
 
+float median(float3 x) {
+  // Get the min and max.
+  float x_min= min(min(x.r, x.g), x.b);
+  float x_max = max(max(x.r, x.g), x.b);
+  
+  // Compute (x.r + x.g + x.b) - (x_min + x_max). This gives us the median.
+  return (x.r + x.g + x.b) - (x_min + x_max);
+}
+
 #endif  // __MATH_INC
-- 
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