change shader version to 130

src/main/java/de/hft/stuttgart/citygml/viewer/CityGMLViewer.java

@@ -210,8 +210,6 @@ public class CityGMLViewer {
 		}
 		GLFW.glfwWindowHint(GLFW.GLFW_VISIBLE, GLFW.GLFW_FALSE); // Sets window to be visible
 		GLFW.glfwWindowHint(GLFW.GLFW_RESIZABLE, GLFW.GLFW_TRUE); // Sets whether the window is resizable
-//		GLFW.glfwWindowHint(GLFW.GLFW_CONTEXT_VERSION_MAJOR, 3);
-//		GLFW.glfwWindowHint(GLFW.GLFW_CONTEXT_VERSION_MINOR, 0);
 		GLFW.glfwWindowHint(GLFW.GLFW_SAMPLES, 2);
 
 		windowId = GLFW.glfwCreateWindow(width, height, title, 0, 0);

src/main/resources/fragment.frag

-#version 150 core
+#version 130
 
 
 // Incoming interpolated (between vertices) color.

src/main/resources/vertex.vert

-#version 150 core
+#version 130
 
 
 // Incoming vertex position, Model Space.