From cf77eb8544975f501c62f627a01d08addf24d243 Mon Sep 17 00:00:00 2001
From: jyelon <jyelon@gmail.com>
Date: Fri, 20 Feb 2026 18:50:13 -0500
Subject: [PATCH] Created MaskedRainbow material in unreal

---
 .claude/settings.local.json                   |  5 +-
 .../Materials/M_MaskedRainbow.uasset          |  3 ++
 Content/StaticMeshes/SM_RainbowCube.uasset    |  3 ++
 Shaders/RainbowColors.ush                     | 50 +++++++++++++++++++
 Source/Integration/Integration.Build.cs       |  5 +-
 Source/Integration/Integration.cpp            |  6 +++
 6 files changed, 69 insertions(+), 3 deletions(-)
 create mode 100644 Content/StarterContent/Materials/M_MaskedRainbow.uasset
 create mode 100644 Content/StaticMeshes/SM_RainbowCube.uasset
 create mode 100644 Shaders/RainbowColors.ush

diff --git a/.claude/settings.local.json b/.claude/settings.local.json
index cdcd3d8f..1dbecc56 100644
--- a/.claude/settings.local.json
+++ b/.claude/settings.local.json
@@ -8,7 +8,10 @@
       "Bash(clangd:*)",
       "Bash(clangd-16:*)",
       "Bash(ssh jyelon-office \"clangd --version 2>/dev/null || clangd-16 --version 2>/dev/null || clangd-18 --version 2>/dev/null || ls /usr/bin/clangd*\")",
-      "Bash(git check-ignore:*)"
+      "Bash(git check-ignore:*)",
+      "Bash(ls:*)",
+      "WebFetch(domain:ikrima.dev)",
+      "WebFetch(domain:indxzero.github.io)"
     ],
     "deny": [
       "Bash(git commit *)",
diff --git a/Content/StarterContent/Materials/M_MaskedRainbow.uasset b/Content/StarterContent/Materials/M_MaskedRainbow.uasset
new file mode 100644
index 00000000..4f500b92
--- /dev/null
+++ b/Content/StarterContent/Materials/M_MaskedRainbow.uasset
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f7d86fb186b74a617e95132901bc0b85f3a50e782fa42711348a73fd818ac711
+size 15203
diff --git a/Content/StaticMeshes/SM_RainbowCube.uasset b/Content/StaticMeshes/SM_RainbowCube.uasset
new file mode 100644
index 00000000..f022fb63
--- /dev/null
+++ b/Content/StaticMeshes/SM_RainbowCube.uasset
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:abe17a13dd1066bc8c1a55c348dabc19ae83016a9058eff441961b2e3b454e6d
+size 19989
diff --git a/Shaders/RainbowColors.ush b/Shaders/RainbowColors.ush
new file mode 100644
index 00000000..6f6e85ab
--- /dev/null
+++ b/Shaders/RainbowColors.ush
@@ -0,0 +1,50 @@
+#pragma once
+
+static const int RainbowColorsSize = 16;
+static const float3 RainbowColors[RainbowColorsSize] = {
+    float3(1.00, 0.05, 0.05),  //  0 red
+    float3(0.45, 0.00, 0.00),  //  1 dark red
+    float3(1.00, 0.20, 0.00),  //  2 orange
+    float3(0.20, 0.05, 0.01),  //  3 dark orange (brown)
+    float3(1.00, 1.00, 0.00),  //  4 yellow
+    float3(0.35, 0.45, 0.00),  //  5 olive
+    float3(0.00, 1.00, 0.00),  //  6 green
+    float3(0.00, 0.30, 0.00),  //  7 dark green
+    float3(0.00, 1.00, 1.00),  // 10 cyan
+    float3(0.00, 0.40, 0.40),  // 11 dark cyan
+    float3(0.00, 0.00, 1.00),  //  8 blue
+    float3(0.00, 0.00, 0.25),  //  9 dark blue
+    float3(0.25, 0.00, 1.00),  // 12 purple
+    float3(0.10, 0.00, 0.25),  // 13 dark purple
+    float3(1.00, 0.05, 1.00),  // 14 pink
+    float3(0.45, 0.00, 0.25)   // 15 dark pink
+};
+
+// Given a color index, find the associated color.
+// If NColors is 8 or less, skips the "dark" colors.
+// If NColors is 4 or less, skips 3 out of 4 colors.
+//
+float3 RainbowColorLookup(int coloridx, int ncolors)
+{
+    if (ncolors <= 8) coloridx *= 2;
+    if (ncolors <= 4) coloridx *= 2;
+
+    float3 color = float3(1,1,1);
+    if (coloridx < RainbowColorsSize) color = RainbowColors[coloridx];
+    return color;
+}
+
+// Create a striped rainbow pattern.  The pattern has ncolors
+// color bands, separated by thin white lines.  Using the mask,
+// which is a bitmask, you can turn any band to black.
+//
+float3 MaskedRainbowPattern(float texcoord, int ncolors, int mask)
+{
+    float bandPos = texcoord * ncolors;
+    int coloridx = (int)floor(fmod(bandPos, ncolors));
+    float3 color = RainbowColorLookup(coloridx, ncolors);
+    if (mask & (1 << coloridx)) color = float3(0, 0, 0);
+    float edge = frac(bandPos);
+    if ((edge <= 0.1) || (edge >= 0.9)) color = float3(1, 1, 1);
+    return color;
+}
diff --git a/Source/Integration/Integration.Build.cs b/Source/Integration/Integration.Build.cs
index 41a28f7e..9ddb568e 100644
--- a/Source/Integration/Integration.Build.cs
+++ b/Source/Integration/Integration.Build.cs
@@ -8,7 +8,7 @@ public class Integration : ModuleRules
 	{
 		PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;
 	
-		PublicDependencyModuleNames.AddRange(new string[] { 
+		PublicDependencyModuleNames.AddRange(new string[] {
 			"Core",
 			"CoreUObject",
 			"Engine",
@@ -18,7 +18,8 @@ public class Integration : ModuleRules
 			"Networking",
 			"EnhancedInput",
 			"UMG",
-			"CommonUI"
+			"CommonUI",
+			"RenderCore"
 		});
 
 		PrivateDependencyModuleNames.AddRange(new string[] {
diff --git a/Source/Integration/Integration.cpp b/Source/Integration/Integration.cpp
index e5df9503..44d9d40e 100644
--- a/Source/Integration/Integration.cpp
+++ b/Source/Integration/Integration.cpp
@@ -3,6 +3,9 @@
 #include "Integration.h"
 #include "Common.h"
 #include "Modules/ModuleManager.h"
+#include "Interfaces/IPluginManager.h"
+#include "Misc/Paths.h"
+#include "ShaderCore.h"
 
 #if WITH_EDITOR
 #include "Engine/Blueprint.h"
@@ -17,6 +20,9 @@ IMPLEMENT_PRIMARY_GAME_MODULE(FlxIntegrationModuleImpl, Integration, "Integratio
 
 void FlxIntegrationModuleImpl::StartupModule()
 {
+	FString ShaderDir = FPaths::Combine(FPaths::ProjectDir(), TEXT("Shaders"));
+	AddShaderSourceDirectoryMapping(TEXT("/Project/Integration"), ShaderDir);
+
 #if WITH_EDITOR
 	OnAssetSavedHandle = UPackage::PackageSavedWithContextEvent.AddRaw(
 		this, &FlxIntegrationModuleImpl::OnAssetSaved);