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Source/Engine/Graphics/Shaders/Cache/ShaderStorage.h

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+// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#include "Engine/Core/Types/BaseTypes.h"
+#include "Engine/Core/Enums.h"
+#include "Engine/Graphics/Config.h"
+#include "Engine/Graphics/Materials/MaterialInfo.h"
+#include "../Config.h"
+
+class MemoryReadStream;
+
+// Shader file data mapping to asset chunks (allows to support shader precompiled for multiple rendering backends)
+#define SHADER_FILE_CHUNK_MATERIAL_PARAMS 0
+#define SHADER_FILE_CHUNK_INTERNAL_D3D_SM5_CACHE 1
+#define SHADER_FILE_CHUNK_INTERNAL_D3D_SM4_CACHE 2
+#define SHADER_FILE_CHUNK_INTERNAL_GLSL_410_CACHE 3
+#define SHADER_FILE_CHUNK_INTERNAL_GLSL_440_CACHE 4
+#define SHADER_FILE_CHUNK_INTERNAL_VULKAN_SM5_CACHE 5
+#define SHADER_FILE_CHUNK_INTERNAL_GENERIC_CACHE 6
+#define SHADER_FILE_CHUNK_INTERNAL_D3D_SM6_CACHE 7
+#define SHADER_FILE_CHUNK_VISJECT_SURFACE 14
+#define SHADER_FILE_CHUNK_SOURCE 15
+
+/// <summary>
+/// Contains shader data that is used during creating shaders/materials
+/// </summary>
+class ShaderStorage
+{
+public:
+
+    /// <summary>
+    /// Different shader cache storage modes (disabled, inside asset and in project cache)
+    /// </summary>
+    DECLARE_ENUM_3(CachingMode, Disabled, AssetInternal, ProjectCache);
+
+    /// <summary>
+    /// Current shaders caching mode to use
+    /// </summary>
+    static CachingMode CurrentCachingMode;
+
+    /// <summary>
+    /// Gets caching mode to use for shaders
+    /// </summary>
+    /// <returns>Caching mode</returns>
+    static CachingMode GetCachingMode();
+
+public:
+
+    /// <summary>
+    /// Packed version of the Magic Code for shader files
+    /// </summary>
+    static const int32 MagicCode;
+
+public:
+
+    /// <summary>
+    /// File header, version 18
+    /// [Deprecated on 24.07.2019, expires on 10.05.2021]
+    /// </summary>
+    struct Header18
+    {
+        static const int32 Version = 18;
+
+        /// <summary>
+        /// The material version (used by the material assets).
+        /// </summary>
+        int32 MaterialVersion;
+
+        /// <summary>
+        /// The material information (used by the material assets).
+        /// </summary>
+        MaterialInfo8 MaterialInfo;
+    };
+
+    /// <summary>
+    /// File header, version 19
+    /// </summary>
+    struct Header19
+    {
+        static const int32 Version = 19;
+
+        union
+        {
+            struct
+            {
+            } Shader;
+
+            struct
+            {
+                /// <summary>
+                /// The material graph version.
+                /// </summary>
+                int32 GraphVersion;
+
+                /// <summary>
+                /// The material additional information.
+                /// </summary>
+                MaterialInfo9 Info;
+            } Material;
+
+            struct
+            {
+                /// <summary>
+                /// The particle emitter graph version.
+                /// </summary>
+                int32 GraphVersion;
+
+                /// <summary>
+                /// The custom particles data size (in bytes).
+                /// </summary>
+                int32 CustomDataSize;
+            } ParticleEmitter;
+        };
+
+        Header19()
+        {
+        }
+    };
+
+    /// <summary>
+    /// Current header type
+    /// </summary>
+    typedef Header19 Header;
+};