diff --git a/pyrender/offscreen.py b/pyrender/offscreen.py
index 3401429..c3ca510 100644
--- a/pyrender/offscreen.py
+++ b/pyrender/offscreen.py
@@ -21,10 +21,11 @@ class OffscreenRenderer(object):
         The size of screen-space points in pixels.
     """
 
-    def __init__(self, viewport_width, viewport_height, point_size=1.0):
+    def __init__(self, viewport_width, viewport_height, point_size=1.0, line_width=1.0):
         self.viewport_width = viewport_width
         self.viewport_height = viewport_height
         self.point_size = point_size
+        self.line_width = line_width
 
         self._platform = None
         self._renderer = None
@@ -148,7 +149,7 @@ def _create(self):
             ))
         self._platform.init_context()
         self._platform.make_current()
-        self._renderer = Renderer(self.viewport_width, self.viewport_height)
+        self._renderer = Renderer(self.viewport_width, self.viewport_height, self.point_size, self.line_width)
 
     def __del__(self):
         try:
diff --git a/pyrender/renderer.py b/pyrender/renderer.py
index f212907..b6c7cf3 100644
--- a/pyrender/renderer.py
+++ b/pyrender/renderer.py
@@ -37,7 +37,7 @@ class Renderer(object):
         Size of points in pixels. Defaults to 1.0.
     """
 
-    def __init__(self, viewport_width, viewport_height, point_size=1.0):
+    def __init__(self, viewport_width, viewport_height, point_size=1.0, line_width=1.0):
         self.dpscale = 1
         # Scaling needed on retina displays
         if sys.platform == 'darwin':
@@ -46,6 +46,7 @@ def __init__(self, viewport_width, viewport_height, point_size=1.0):
         self.viewport_width = viewport_width
         self.viewport_height = viewport_height
         self.point_size = point_size
+        self.line_width = line_width
 
         # Optional framebuffer for offscreen renders
         self._main_fb = None
@@ -599,6 +600,12 @@ def _bind_and_draw_primitive(self, primitive, pose, program, flags):
         if primitive.mode == GLTF.POINTS:
             glEnable(GL_PROGRAM_POINT_SIZE)
             glPointSize(self.point_size)
+        
+        # Set line width if needed
+        glDisable(GL_LINE_SMOOTH)
+        if primitive.mode == GLTF.LINES or primitive.mode == GLTF.LINE_LOOP or primitive.mode == GLTF.LINE_STRIP:
+          glEnable(GL_LINE_SMOOTH)
+          glLineWidth(self.line_width)
 
         # Render mesh
         n_instances = 1