Colored triangles with VAO and VBO

opengl-test-two/trimap.vertexshader

@@ -1,13 +1,11 @@
-#version 400
+#version 330 core
 
-in vec2 aVertex;
-in vec2 aTexCoord;
+layout(location = 0) in vec3 vertexPosition_modelspace;
+layout(location = 1) in vec3 vertexColor;
+out vec3 fragmentColor;
 
-out vec2 vTexCoord;
-out vec3 vNormal;
-
-void main()
-{
-    vTexCoord   = aTexCoord;
-    gl_Position = vec3(aVertex, 1);
+void main(){
+    gl_Position.xyz = vertexPosition_modelspace;
+    gl_Position.w = 1.0;
+    fragmentColor = vertexColor;
 }