--- a/Shark.cpp	Fri Dec 01 20:25:49 2023 +0100
+++ b/Shark.cpp	Fri Dec 01 21:02:02 2023 +0100
@@ -376,20 +376,27 @@
 		glGenBuffers(1, &vbo);
 		glBindBuffer(GL_ARRAY_BUFFER, vbo);
 
-		std::vector<std::string> fileNames = {
-			"shaders/first.vert",
-			"shaders/first.frag",
-		};
+		if (cfg.shaders.empty()) {
+			// TODO: configurable absolute path or embedded defaults
+			cfg.shaders.push_back({"shaders/first.vert", "vertex"});
+			cfg.shaders.push_back({"shaders/first.frag", "fragment"});
+		}
 
 		std::shared_ptr<Program> program = std::make_shared<Program>();
 
 		// glBindFragDataLocation(program, 0, "outColor");
 		// glBindAttribLocation(program, LOC.input, "vertices");
 
-		for (const std::string& fileName : fileNames) {
+		for (const Configuration::Shader definition : cfg.shaders) {
+			Shader::Type type;
+			std::string fileName = definition.fileName;
+			if (definition.type == "fragment") type = Shader::Type::FRAGMENT;
+			else if (definition.type == "vertex") type = Shader::Type::VERTEX;
+			else throw std::invalid_argument("unsupported shader type");
+
 			MappedFile file(fileName);
 			std::shared_ptr<Shader> shader = std::make_shared<Shader>(
-					toShaderType(fileName), file, fileName);
+					type, file, fileName);
 
 			program->attachShader(*shader.get());
 			shaders.push_back(shader);