feat(srp): add camera-driven universal renderer selection

managed/XCEngine.ScriptCore/InternalCalls.cs

@@ -389,6 +389,11 @@ namespace XCEngine
         internal static extern int Rendering_ScriptableRenderContext_GetStage(
             ulong nativeHandle);
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal static extern int
+            Rendering_ScriptableRenderContext_GetRendererIndex(
+                ulong nativeHandle);
+
         [MethodImpl(MethodImplOptions.InternalCall)]
         internal static extern int
             Rendering_ScriptableRenderContext_GetSourceColorTextureHandle(
@@ -473,6 +478,11 @@ namespace XCEngine
                 ulong nativeHandle,
                 ulong rasterPassHandle);
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal static extern int
+            Rendering_ScriptableRenderPipelinePlanningContext_GetRendererIndex(
+                ulong nativeHandle);
+
         [MethodImpl(MethodImplOptions.InternalCall)]
         internal static extern bool
             Rendering_ScriptableRenderPipelinePlanningContext_IsStageRequested(
@@ -802,6 +812,22 @@ namespace XCEngine
             Rendering_CameraRenderRequestContext_GetRenderedRequestCount(
                 ulong nativeHandle);
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal static extern ulong
+            Rendering_CameraRenderRequestContext_GetCameraGameObjectUUID(
+                ulong nativeHandle);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal static extern int
+            Rendering_CameraRenderRequestContext_GetRendererIndex(
+                ulong nativeHandle);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal static extern void
+            Rendering_CameraRenderRequestContext_SetRendererIndex(
+                ulong nativeHandle,
+                int rendererIndex);
+
         [MethodImpl(MethodImplOptions.InternalCall)]
         internal static extern bool
             Rendering_CameraRenderRequestContext_GetHasDirectionalShadow(

managed/XCEngine.ScriptCore/Rendering/Core/CameraRenderRequestContext.cs

@@ -21,6 +21,38 @@ namespace XCEngine.Rendering
                 .Rendering_CameraRenderRequestContext_GetRenderedRequestCount(
                     m_nativeHandle);
 
+        public Camera camera
+        {
+            get
+            {
+                ulong cameraGameObjectUUID =
+                    InternalCalls
+                        .Rendering_CameraRenderRequestContext_GetCameraGameObjectUUID(
+                            m_nativeHandle);
+                if (cameraGameObjectUUID == 0)
+                {
+                    return null;
+                }
+
+                GameObject gameObject =
+                    new GameObject(cameraGameObjectUUID);
+                return gameObject.GetComponent<Camera>();
+            }
+        }
+
+        public int rendererIndex
+        {
+            get =>
+                InternalCalls
+                    .Rendering_CameraRenderRequestContext_GetRendererIndex(
+                        m_nativeHandle);
+            set =>
+                InternalCalls
+                    .Rendering_CameraRenderRequestContext_SetRendererIndex(
+                        m_nativeHandle,
+                        value);
+        }
+
         internal ulong nativeHandle =>
             m_nativeHandle;
     }

managed/XCEngine.ScriptCore/Rendering/Core/ScriptableRenderContext.cs

@@ -15,6 +15,11 @@ namespace XCEngine.Rendering
             (CameraFrameStage)InternalCalls.Rendering_ScriptableRenderContext_GetStage(
                 m_nativeHandle);
 
+        public int rendererIndex =>
+            InternalCalls
+                .Rendering_ScriptableRenderContext_GetRendererIndex(
+                    m_nativeHandle);
+
         public RenderGraphTextureHandle sourceColorTexture =>
             RenderGraphTextureHandle.FromNativeIndex(
                 InternalCalls

managed/XCEngine.ScriptCore/Rendering/Core/ScriptableRenderPipelinePlanningContext.cs

@@ -12,6 +12,11 @@ namespace XCEngine.Rendering
             m_nativeHandle = nativeHandle;
         }
 
+        public int rendererIndex =>
+            InternalCalls
+                .Rendering_ScriptableRenderPipelinePlanningContext_GetRendererIndex(
+                    m_nativeHandle);
+
         public bool IsStageRequested(
             CameraFrameStage stage)
         {