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Source/Engine/ContentImporters/CreateMaterialInstance.h

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+// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#include "Types.h"
+
+#if COMPILE_WITH_ASSETS_IMPORTER
+
+#include "Engine/Graphics/Materials/MaterialParams.h"
+#include "Engine/Content/Assets/MaterialInstance.h"
+#include "Engine/Serialization/MemoryWriteStream.h"
+
+/// <summary>
+/// Creating material instances utility.
+/// </summary>
+class CreateMaterialInstance
+{
+public:
+
+    /// <summary>
+    /// Creates the asset.
+    /// </summary>
+    /// <param name="context">The importing context.</param>
+    /// <returns>Result.</returns>
+    static CreateAssetResult Create(CreateAssetContext& context)
+    {
+        // Base
+        IMPORT_SETUP(MaterialInstance, 4);
+
+        // Chunk 0 - Header
+        if (context.AllocateChunk(0))
+            return CreateAssetResult::CannotAllocateChunk;
+        MemoryWriteStream stream(256);
+        stream.Write(&Guid::Empty);
+        MaterialParams::Save(&stream, nullptr);
+        context.Data.Header.Chunks[0]->Data.Copy(stream.GetHandle(), stream.GetPosition());
+
+        return CreateAssetResult::Ok;
+    }
+};
+
+#endif