feat(scripting): add managed srp base api

managed/XCEngine.ScriptCore/CameraFrameStage.cs

@@ -0,0 +1,15 @@
+namespace XCEngine
+{
+    public enum CameraFrameStage : byte
+    {
+        PreScenePasses = 0,
+        ShadowCaster = 1,
+        DepthOnly = 2,
+        MainScene = 3,
+        PostProcess = 4,
+        FinalOutput = 5,
+        ObjectId = 6,
+        PostScenePasses = 7,
+        OverlayPasses = 8
+    }
+}

managed/XCEngine.ScriptCore/GraphicsSettings.cs

@@ -20,10 +20,10 @@ namespace XCEngine
             set
             {
                 if (value != null &&
-                    !typeof(RenderPipelineAsset).IsAssignableFrom(value))
+                    !typeof(ScriptableRenderPipelineAsset).IsAssignableFrom(value))
                 {
                     throw new ArgumentException(
-                        "GraphicsSettings.renderPipelineAssetType must derive from RenderPipelineAsset.",
+                        "GraphicsSettings.renderPipelineAssetType must derive from ScriptableRenderPipelineAsset.",
                         nameof(value));
                 }
 

managed/XCEngine.ScriptCore/ScriptableRenderPipeline.cs

@@ -0,0 +1,21 @@
+namespace XCEngine
+{
+    public abstract class ScriptableRenderPipeline : Object
+    {
+        protected ScriptableRenderPipeline()
+        {
+        }
+
+        protected internal virtual bool SupportsStageRenderGraph(
+            CameraFrameStage stage)
+        {
+            return false;
+        }
+
+        protected internal virtual bool RecordStageRenderGraph(
+            CameraFrameStage stage)
+        {
+            return false;
+        }
+    }
+}

managed/XCEngine.ScriptCore/ScriptableRenderPipelineAsset.cs

@@ -0,0 +1,14 @@
+namespace XCEngine
+{
+    public abstract class ScriptableRenderPipelineAsset : RenderPipelineAsset
+    {
+        protected ScriptableRenderPipelineAsset()
+        {
+        }
+
+        protected internal virtual ScriptableRenderPipeline CreatePipeline()
+        {
+            return null;
+        }
+    }
+}