diff -r eee644f88e93 -r 3af627f7a40f src/gl/compiler.cpp
--- a/src/gl/compiler.cpp	Sat Feb 08 00:08:57 2020 +0200
+++ b/src/gl/compiler.cpp	Thu Feb 13 12:51:27 2020 +0200
@@ -130,6 +130,42 @@
 {
 }
 
+void gl::buildShaders(
+	QOpenGLShaderProgram* shaderProgram,
+	const char* vertexShaderSource,
+	const char* fragmentShaderSource)
+{
+	shaderProgram->create();
+	const bool vertexShaderCompiled = shaderProgram->addShaderFromSourceCode(QOpenGLShader::Vertex, vertexShaderSource);
+	QString log;
+	if (not vertexShaderCompiled)
+	{
+		log += "\n" + QObject::tr("Vertex shader:") + "\n" + shaderProgram->log();
+	}
+	const bool fragmentShaderCompiled = shaderProgram->addShaderFromSourceCode(QOpenGLShader::Fragment, fragmentShaderSource);
+	if (not fragmentShaderCompiled)
+	{
+		log += "\n" + QObject::tr("Fragment shader:") + "\n" + shaderProgram->log();
+	}
+	if (not vertexShaderCompiled or not fragmentShaderCompiled)
+	{
+		QMessageBox::critical(
+			nullptr,
+			QObject::tr("Shader compile error"),
+			QObject::tr("Could not compile shaders.") + "\n" + log);
+		std::exit(-1);
+	}
+	const bool linkSuccessful = shaderProgram->link();
+	if (not linkSuccessful)
+	{
+		QMessageBox::critical(
+			nullptr,
+			QObject::tr("Shader link error"),
+			QObject::tr("Could not link shaders: %1").arg(shaderProgram->log())
+		);
+	}
+}
+
 void gl::Compiler::initialize()
 {
 	if (not this->initialized)
@@ -139,24 +175,7 @@
 		{
 			auto& object = this->glObjects[i];
 			object.program = new QOpenGLShaderProgram;
-			object.program->create();
-			const bool vertexShaderCompiled = object.program->addShaderFromSourceCode(QOpenGLShader::Vertex, ::vertexShaderSource);
-			QString log;
-			if (not vertexShaderCompiled)
-			{
-				log += "\n" + tr("Vertex shader:") + "\n" + object.program->log();
-			}
-			const bool fragmentShaderCompiled = object.program->addShaderFromSourceCode(QOpenGLShader::Fragment, ::fragmentShaderSource);
-			if (not fragmentShaderCompiled)
-			{
-				log += "\n" + tr("Fragment shader:") + "\n" + object.program->log();
-			}
-			if (not vertexShaderCompiled or not fragmentShaderCompiled)
-			{
-				QMessageBox::critical(nullptr, tr("Shader compile error"), tr("Could not compile shaders.") + "\n" + log);
-				std::exit(-1);
-			}
-			object.program->link();
+			gl::buildShaders(object.program, ::vertexShaderSource, ::fragmentShaderSource);
 			object.program->bind();
 			object.buffer.create();
 			object.buffer.bind();