diff --git a/manimlib/camera/camera.py b/manimlib/camera/camera.py
index 921bcbe8..16a1e4f0 100644
--- a/manimlib/camera/camera.py
+++ b/manimlib/camera/camera.py
@@ -184,7 +184,7 @@ class Camera(object):
         self.frame.move_to(center)
 
     def pixel_coords_to_space_coords(self, px, py, relative=False):
-        pw, ph = self.get_pixel_shape()
+        pw, ph = self.fbo.size
         fw, fh = self.get_frame_shape()
         fc = self.get_frame_center()
         if relative:
@@ -192,11 +192,7 @@ class Camera(object):
         else:
             # Only scale wrt one axis
             scale = fh / ph
-            return np.array([
-                scale * (px - pw / 2) - fc[0],
-                scale * (py - py / 2) - fc[0],
-                -fc[2] / 2,
-            ])
+            return fc + scale * np.array([(px - pw / 2), (py - ph / 2), 0])
 
     # TODO, account for 3d
     # Also, move this to CameraFrame?
@@ -293,7 +289,7 @@ class Camera(object):
         mapping = {
             'scale': fh / 2,  # Scale based on frame size
             'aspect_ratio': (pw / ph),  # AR based on pixel shape
-            'anti_alias_width': ANTI_ALIAS_WIDTH,
+            'anti_alias_width': ANTI_ALIAS_WIDTH_OVER_FRAME_HEIGHT * fh,
             'frame_center': tuple(fc),
         }
         for key, value in mapping.items():
diff --git a/manimlib/shaders/set_gl_Position.glsl b/manimlib/shaders/set_gl_Position.glsl
index e83900d6..12e8fa1a 100644
--- a/manimlib/shaders/set_gl_Position.glsl
+++ b/manimlib/shaders/set_gl_Position.glsl
@@ -5,8 +5,8 @@
 
 void set_gl_Position(vec3 point){
     // TODO, orient in 3d based on certain rotation matrices
+    point -= frame_center;
     point /= scale;
     point.x /= aspect_ratio;
-    point -= frame_center;
     gl_Position = vec4(point, 1.0);
 }
\ No newline at end of file
diff --git a/manimlib/window.py b/manimlib/window.py
index 7e9ac290..d39d2d7f 100644
--- a/manimlib/window.py
+++ b/manimlib/window.py
@@ -43,7 +43,7 @@ class Window(PygletWindow):
         super().on_mouse_drag(x, y, dx, dy, buttons, modifiers)
         point = self.pixel_coords_to_space_coords(x, y)
         d_point = self.pixel_coords_to_space_coords(dx, dy, relative=True)
-        self.scene.on_mouse_drag(point, d_point, buttons, modifiers)  # Do a conversion?
+        self.scene.on_mouse_drag(point, d_point, buttons, modifiers)
 
     def on_mouse_press(self, x: int, y: int, button, mods):
         super().on_mouse_press(x, y, button, mods)