update

resources/shaders/printbed.vs

@@ -0,0 +1,14 @@
+#version 110
+
+attribute vec3 v_position;
+attribute vec2 v_tex_coords;
+
+varying vec2 tex_coords;
+
+void main()
+{
+    gl_Position = gl_ModelViewProjectionMatrix * vec4(v_position.x, v_position.y, v_position.z, 1.0);
+	// the following line leads to crash on some Intel graphics card
+    //gl_Position = gl_ModelViewProjectionMatrix * vec4(v_position, 1.0);
+    tex_coords = v_tex_coords;
+}