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Source/Engine/Graphics/Materials/MaterialShader.h

@@ -0,0 +1,110 @@
+// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#include "IMaterial.h"
+#include "Engine/Graphics/GPUPipelineState.h"
+#include "Engine/Renderer/Config.h"
+
+/// <summary>
+/// Current materials shader version.
+/// </summary>
+#define MATERIAL_GRAPH_VERSION 146
+
+class Material;
+class GPUShader;
+class MemoryReadStream;
+
+/// <summary>
+/// Represents material shader that can be used to render objects, visuals or effects. Contains a dedicated shader.
+/// </summary>
+class MaterialShader : public IMaterial
+{
+protected:
+
+    struct PipelineStateCache
+    {
+        GPUPipelineState* PS[6];
+        GPUPipelineState::Description Desc;
+
+        PipelineStateCache()
+        {
+            Platform::MemoryClear(PS, sizeof(PS));
+        }
+
+        void Init(GPUPipelineState::Description& desc)
+        {
+            Desc = desc;
+        }
+
+        GPUPipelineState* GetPS(CullMode mode, bool wireframe);
+
+        void Release()
+        {
+            for (int32 i = 0; i < ARRAY_COUNT(PS); i++)
+            {
+                SAFE_DELETE_GPU_RESOURCE(PS[i]);
+            }
+        }
+    };
+
+protected:
+
+    bool _isLoaded;
+    GPUShader* _shader;
+    Array<byte> _cb0Data;
+    Array<byte> _cb1Data;
+    MaterialInfo _info;
+
+protected:
+
+    /// <summary>
+    /// Init
+    /// </summary>
+    /// <param name="name">Material resource name</param>
+    MaterialShader(const String& name);
+
+public:
+
+    /// <summary>
+    /// Finalizes an instance of the <see cref="MaterialShader"/> class.
+    /// </summary>
+    virtual ~MaterialShader();
+
+public:
+
+    /// <summary>
+    /// Creates and loads the material from the data.
+    /// </summary>
+    /// <param name="name">Material resource name</param>
+    /// <param name="shaderCacheStream">Stream with compiled shader data</param>
+    /// <param name="info">Loaded material info structure</param>
+    /// <returns>The created and loaded material or null if failed.</returns>
+    static MaterialShader* Create(const String& name, MemoryReadStream& shaderCacheStream, const MaterialInfo& info);
+
+    /// <summary>
+    /// Creates the dummy material used by the Null rendering backend to mock object but not perform any rendering.
+    /// </summary>
+    /// <param name="shaderCacheStream">The shader cache stream.</param>
+    /// <param name="info">The material information.</param>
+    /// <returns>The created and loaded material or null if failed.</returns>
+    static MaterialShader* CreateDummy(MemoryReadStream& shaderCacheStream, const MaterialInfo& info);
+
+public:
+
+    /// <summary>
+    /// Clear loaded data
+    /// </summary>
+    virtual void Unload();
+
+protected:
+
+    bool Load(MemoryReadStream& shaderCacheStream, const MaterialInfo& info);
+    virtual bool Load() = 0;
+
+public:
+
+    // [IMaterial]
+    const MaterialInfo& GetInfo() const override;
+    bool IsReady() const override;
+};