paint: show plugin formats

base/sources/ts/path.ts

@@ -123,9 +123,14 @@ function path_is_gimp_color_palette(path: string): bool {
 	return ends_with(p, ".gpl");
 }
 
+function path_is_ext_format(path: string): bool {
+	let p: string = to_lower_case(path);
+	return ends_with(p, ".fbx") || ends_with(p, ".gltf") || ends_with(p, ".glb") || ends_with(p, ".stl") || ends_with(p, ".svg");
+}
+
 function path_is_known(path: string): bool {
 	return path_is_mesh(path) || path_is_texture(path) || path_is_font(path) || path_is_project(path) || path_is_plugin(path) || path_is_text(path) ||
-	       path_is_gimp_color_palette(path);
+	       path_is_gimp_color_palette(path) || path_is_ext_format(path);
 }
 
 function path_check_ext(p: string, exts: string[]): bool {

paint/sources/project.ts

@@ -371,6 +371,12 @@ function project_import_mesh(replace_existing: bool = true, done: () => void = n
 		// Show .fbx in the file picker even when fbx plugin is not yet enabled
 		formats += ",fbx";
 	}
+	if (string_index_of(formats, "gltf") == -1) {
+		formats += ",gltf";
+	}
+	if (string_index_of(formats, "glb") == -1) {
+		formats += ",glb";
+	}
 	ui_files_show(formats, false, false, function(path: string) {
 		project_import_mesh_box(path, _project_import_mesh_replace_existing, true, _project_import_mesh_done);
 	});