Add procedural skybox scene coverage

engine/src/Resources/BuiltinResources.cpp

@@ -32,6 +32,7 @@ constexpr const char* kBuiltinUnlitShaderPath = "builtin://shaders/unlit";
 constexpr const char* kBuiltinDepthOnlyShaderPath = "builtin://shaders/depth-only";
 constexpr const char* kBuiltinShadowCasterShaderPath = "builtin://shaders/shadow-caster";
 constexpr const char* kBuiltinObjectIdShaderPath = "builtin://shaders/object-id";
+constexpr const char* kBuiltinSkyboxShaderPath = "builtin://shaders/skybox";
 constexpr const char* kBuiltinDefaultPrimitiveTexturePath = "builtin://textures/default-primitive-albedo";
 constexpr float kPi = 3.14159265358979323846f;
 
@@ -52,6 +53,8 @@ constexpr const char* kBuiltinShadowCasterShaderManifestRelativePath =
     "engine/assets/builtin/shaders/shadow-caster/shadow-caster.shader";
 constexpr const char* kBuiltinObjectIdShaderManifestRelativePath =
     "engine/assets/builtin/shaders/object-id/object-id.shader";
+constexpr const char* kBuiltinSkyboxShaderManifestRelativePath =
+    "engine/assets/builtin/shaders/skybox/skybox.shader";
 
 Containers::String NormalizeBuiltinAssetPath(const std::filesystem::path& path) {
     return Containers::String(path.lexically_normal().generic_string().c_str());
@@ -130,6 +133,9 @@ const char* GetBuiltinShaderManifestRelativePath(const Containers::String& built
     if (builtinShaderPath == Containers::String(kBuiltinObjectIdShaderPath)) {
         return kBuiltinObjectIdShaderManifestRelativePath;
     }
+    if (builtinShaderPath == Containers::String(kBuiltinSkyboxShaderPath)) {
+        return kBuiltinSkyboxShaderManifestRelativePath;
+    }
 
     return nullptr;
 }
@@ -670,6 +676,10 @@ Shader* BuildBuiltinObjectIdShader(const Containers::String& path) {
     return TryLoadBuiltinShaderFromManifest(path);
 }
 
+Shader* BuildBuiltinSkyboxShader(const Containers::String& path) {
+    return TryLoadBuiltinShaderFromManifest(path);
+}
+
 Material* BuildDefaultPrimitiveMaterial(const Containers::String& path) {
     auto* material = new Material();
     IResource::ConstructParams params;
@@ -788,6 +798,10 @@ Containers::String GetBuiltinObjectIdShaderPath() {
     return Containers::String(kBuiltinObjectIdShaderPath);
 }
 
+Containers::String GetBuiltinSkyboxShaderPath() {
+    return Containers::String(kBuiltinSkyboxShaderPath);
+}
+
 Containers::String GetBuiltinDefaultPrimitiveTexturePath() {
     return Containers::String(kBuiltinDefaultPrimitiveTexturePath);
 }
@@ -886,6 +900,8 @@ LoadResult CreateBuiltinShaderResource(const Containers::String& path) {
         shader = BuildBuiltinShadowCasterShader(path);
     } else if (path == GetBuiltinObjectIdShaderPath()) {
         shader = BuildBuiltinObjectIdShader(path);
+    } else if (path == GetBuiltinSkyboxShaderPath()) {
+        shader = BuildBuiltinSkyboxShader(path);
     } else {
         return LoadResult(Containers::String("Unknown builtin shader: ") + path);
     }