Add builtin unlit surface path

engine/src/Resources/BuiltinResources.cpp

@@ -28,6 +28,7 @@ constexpr const char* kBuiltinShaderPrefix = "builtin://shaders/";
 constexpr const char* kBuiltinTexturePrefix = "builtin://textures/";
 constexpr const char* kBuiltinDefaultPrimitiveMaterialPath = "builtin://materials/default-primitive";
 constexpr const char* kBuiltinForwardLitShaderPath = "builtin://shaders/forward-lit";
+constexpr const char* kBuiltinUnlitShaderPath = "builtin://shaders/unlit";
 constexpr const char* kBuiltinObjectIdShaderPath = "builtin://shaders/object-id";
 constexpr const char* kBuiltinDefaultPrimitiveTexturePath = "builtin://textures/default-primitive-albedo";
 constexpr float kPi = 3.14159265358979323846f;
@@ -41,6 +42,8 @@ size_t CalculateBuiltinShaderMemorySize(const Shader& shader);
 
 constexpr const char* kBuiltinForwardLitShaderManifestRelativePath =
     "engine/assets/builtin/shaders/forward-lit/forward-lit.shader";
+constexpr const char* kBuiltinUnlitShaderManifestRelativePath =
+    "engine/assets/builtin/shaders/unlit/unlit.shader";
 constexpr const char* kBuiltinObjectIdShaderManifestRelativePath =
     "engine/assets/builtin/shaders/object-id/object-id.shader";
 
@@ -109,6 +112,9 @@ const char* GetBuiltinShaderManifestRelativePath(const Containers::String& built
     if (builtinShaderPath == Containers::String(kBuiltinForwardLitShaderPath)) {
         return kBuiltinForwardLitShaderManifestRelativePath;
     }
+    if (builtinShaderPath == Containers::String(kBuiltinUnlitShaderPath)) {
+        return kBuiltinUnlitShaderManifestRelativePath;
+    }
     if (builtinShaderPath == Containers::String(kBuiltinObjectIdShaderPath)) {
         return kBuiltinObjectIdShaderManifestRelativePath;
     }
@@ -636,6 +642,10 @@ Shader* BuildBuiltinForwardLitShader(const Containers::String& path) {
     return TryLoadBuiltinShaderFromManifest(path);
 }
 
+Shader* BuildBuiltinUnlitShader(const Containers::String& path) {
+    return TryLoadBuiltinShaderFromManifest(path);
+}
+
 Shader* BuildBuiltinObjectIdShader(const Containers::String& path) {
     return TryLoadBuiltinShaderFromManifest(path);
 }
@@ -742,6 +752,10 @@ Containers::String GetBuiltinForwardLitShaderPath() {
     return Containers::String(kBuiltinForwardLitShaderPath);
 }
 
+Containers::String GetBuiltinUnlitShaderPath() {
+    return Containers::String(kBuiltinUnlitShaderPath);
+}
+
 Containers::String GetBuiltinObjectIdShaderPath() {
     return Containers::String(kBuiltinObjectIdShaderPath);
 }
@@ -836,6 +850,8 @@ LoadResult CreateBuiltinShaderResource(const Containers::String& path) {
     Shader* shader = nullptr;
     if (path == GetBuiltinForwardLitShaderPath()) {
         shader = BuildBuiltinForwardLitShader(path);
+    } else if (path == GetBuiltinUnlitShaderPath()) {
+        shader = BuildBuiltinUnlitShader(path);
     } else if (path == GetBuiltinObjectIdShaderPath()) {
         shader = BuildBuiltinObjectIdShader(path);
     } else {