Add shader blacklist

Add a configurable blacklist of shaders that can be projected onto

Distribution/GameData/ConformalDecals/ConformalDecals.cfg

@@ -0,0 +1,20 @@
+CONFORMALDECALS {
+  SHADERBLACKLIST {
+    shader = DepthMask
+    shader = KSP/Alpha/Cutoff
+    shader = KSP/Alpha/Cutoff Bumped
+    shader = KSP/Alpha/Translucent
+    shader = KSP/Alpha/Translucent Additive
+    shader = KSP/Alpha/Translucent Specular
+    shader = KSP/Alpha/Unlit Transparent
+    shader = KSP/Bumped Specular (Transparent)
+    shader = KSP/FX/ScrollingUnlit
+    shader = KSP/Particles/Additive
+    shader = KSP/Particles/Additive (Soft)
+    shader = KSP/Particles/Alpha Blended
+    shader = KSP/Particles/Alpha Blended Emissive Cutout
+    shader = KSP/Specular (Cutoff)
+    shader = KSP/Specular (Transparent)
+    shader = Solid Color (Alpha)
+  }
+}

Source/ConformalDecals/ConformalDecalConfig.cs

@@ -0,0 +1,38 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace ConformalDecals {
+    [KSPAddon(KSPAddon.Startup.Instantly, true)]
+    public class ConformalDecalConfig : MonoBehaviour {
+        private static List<string> _shaderBlacklist;
+
+        public static bool IsBlacklisted(Shader shader) {
+            return IsBlacklisted(shader.name);
+        }
+
+        public static bool IsBlacklisted(string shaderName) {
+            return _shaderBlacklist.Contains(shaderName);
+        }
+
+        private void ParseConfig(ConfigNode node) {
+            foreach (var blacklist in node.GetNodes("SHADERBLACKLIST")) {
+                foreach (var shaderName in blacklist.GetValuesList("shader")) {
+                    _shaderBlacklist.Add(shaderName);
+                }
+            }
+        }
+
+        private void Start() {
+            _shaderBlacklist = new List<string>();
+
+            var configs = GameDatabase.Instance.GetConfigs("CONFORMALDECALS");
+
+            if (configs.Length > 0) {
+                Debug.Log("DecalConfig loading config");
+                foreach (var config in configs) {
+                    ParseConfig(config.config);
+                }
+            }
+        }
+    }
+}

Source/ConformalDecals/ConformalDecals.csproj

@@ -49,6 +49,7 @@
         </Reference>
     </ItemGroup>
     <ItemGroup>
+        <Compile Include="ConformalDecalConfig.cs" />
         <Compile Include="MaterialModifiers\MaterialColorProperty.cs" />
         <Compile Include="MaterialModifiers\MaterialFloatProperty.cs" />
         <Compile Include="MaterialModifiers\MaterialProperty.cs" />

Source/ConformalDecals/ModuleConformalDecal.cs

@@ -330,6 +330,12 @@ namespace ConformalDecals {
             foreach (var renderer in renderers) {
                 // skip disabled renderers
                 if (renderer.gameObject.activeInHierarchy == false) continue;
+                
+                // skip blacklisted shaders
+                if (ConformalDecalConfig.IsBlacklisted(renderer.material.shader)) {
+                    this.Log($"Skipping blacklisted shader '{renderer.material.shader.name}' in '{renderer.gameObject.name}'");
+                    continue;
+                }
 
                 var meshFilter = renderer.GetComponent<MeshFilter>();
                 if (meshFilter == null) continue; // object has a meshRenderer with no filter, invalid