Enhancements to breadcrumb trail

ghostshader.glsl

@@ -1,4 +1,4 @@
-#version 460 core
+#version 330 core
 // Billboarded ghost vertex shader: passes world pos/normal and flips UV.y for texture atlases.
 layout (location = 0) in vec3 aPos;
 layout (location = 1) in vec3 aNormal;