ECM2

Assets/VolumetricLightBeam/Scripts/DummyMaterial.cs

@@ -0,0 +1,49 @@
+using UnityEngine;
+#if UNITY_EDITOR
+using UnityEditor;
+#endif
+
+namespace VLB
+{
+    public static class DummyMaterial
+    {
+#if UNITY_EDITOR
+        static string GetPath(ShaderMode shaderMode, Shader shader)
+        {
+            string kDummyFilename = "VLBDummyMaterial" + shaderMode + ".mat";
+            string kDummyPathFallback = "Assets/" + Consts.PluginFolder + "/Shaders/" + kDummyFilename;
+
+            Debug.Assert(shader);
+
+            var shaderPath = AssetDatabase.GetAssetPath(shader);
+            if (string.IsNullOrEmpty(shaderPath))
+                return kDummyPathFallback;
+
+            var shaderFolder = System.IO.Path.GetDirectoryName(shaderPath);
+            return System.IO.Path.Combine(shaderFolder, kDummyFilename);
+        }
+
+        /// <summary>
+        /// Create a dummy material with the proper instancing flag to prevent from stripping away needed shader variants when exporting build
+        /// </summary>
+        public static Material Create(ShaderMode shaderMode, Shader shader, bool gpuInstanced)
+        {
+            if (shader == null)
+                return null;
+
+            string path = GetPath(shaderMode, shader);
+            var dummyMat = AssetDatabase.LoadAssetAtPath<Material>(path);
+            if (dummyMat == null
+             || dummyMat.shader != shader
+             || BatchingHelper.IsGpuInstancingEnabled(dummyMat) != gpuInstanced)
+            {
+                dummyMat = MaterialManager.NewMaterialPersistent(shader, gpuInstanced);
+                if (dummyMat)
+                    AssetDatabase.CreateAsset(dummyMat, path);
+            }
+
+            return dummyMat;
+        }
+#endif
+    }
+}