diff --git a/packages/renderer-virtual/source/resource/Resource.ts b/packages/renderer-virtual/source/resource/Resource.ts
index 434179d..16582a8 100644
--- a/packages/renderer-virtual/source/resource/Resource.ts
+++ b/packages/renderer-virtual/source/resource/Resource.ts
@@ -1,10 +1,18 @@
-import type { ResourceTypeSet } from "./ResourceType";
+
+type ResourceNameType = string | number;
+type ResourceIdType = string | number | symbol;
 
 interface Resource {
 
-    type: ResourceTypeSet;
+    /**
+     * Unique identification of resource type.
+     */
+    type: ResourceNameType;
 
-    id: string | number;
+    /**
+     * Unique number of the resource instance.
+     */
+    id: ResourceIdType;
 }
 
-export type { Resource };
\ No newline at end of file
+export type { Resource, ResourceNameType, ResourceIdType };
\ No newline at end of file
diff --git a/packages/renderer-virtual/source/resource/ResourceSet.ts b/packages/renderer-virtual/source/resource/ResourceSet.ts
index 896f95a..d70d567 100644
--- a/packages/renderer-virtual/source/resource/ResourceSet.ts
+++ b/packages/renderer-virtual/source/resource/ResourceSet.ts
@@ -1,5 +1,10 @@
 import type { ShaderResource } from "./ShaderResource";
 
-type ResourceSet = ShaderResource;
+namespace ResourceName {
+    export type Shader = ShaderResource["type"];
+}
 
-export type { ResourceSet };
\ No newline at end of file
+type ResourceSet = ShaderResource;
+type ResourceNameSet = ResourceName.Shader;
+
+export type { ResourceName, ResourceNameSet, ResourceSet };
\ No newline at end of file
diff --git a/packages/renderer-virtual/source/resource/ResourceType.ts b/packages/renderer-virtual/source/resource/ResourceType.ts
deleted file mode 100644
index 583913c..0000000
--- a/packages/renderer-virtual/source/resource/ResourceType.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-
-namespace ResourceType {
-
-    export type Shader = "SHADER" | 100_001;
-}
-
-type ResourceTypeSet = ResourceType.Shader;
-
-export type { ResourceType, ResourceTypeSet };
\ No newline at end of file
diff --git a/packages/renderer-virtual/source/resource/ShaderResource.ts b/packages/renderer-virtual/source/resource/ShaderResource.ts
index 5d85c51..5da0f14 100644
--- a/packages/renderer-virtual/source/resource/ShaderResource.ts
+++ b/packages/renderer-virtual/source/resource/ShaderResource.ts
@@ -1,6 +1,8 @@
+import type { Resource } from "./Resource";
 
-interface ShaderResource {
+interface ShaderResource extends Resource {
 
+    type: "SHADER" | 100_001;
 }
 
 export type { ShaderResource };
\ No newline at end of file