What is the reason behind a triangle’s width drawn by GPU occupying 15 pixels instead of 16 pixels?

I want to draw a triangle in a 160*160 color attachment. the coordination is

-1.0,1.0,0.0
-0.9,0.9,0.0
-0.8,1.0,0.0

In my opinion, the width of triangle is 0.2, so it should occupy 16 pixels.
but the result is 15.
enter image description here
I want to know how GPU process this situation? Can i find some algorithm or formulaļ¼Ÿ

ASP.NET MVC web app published to IIS Server missing pages – how to fix?

I do publish my web application to the real server.

and after I test, everything works until I press the button to add more data.

Seems like the page name Create didn’t in publish, how can I do?

I do can log-in/logout.

I can delete/ update but I cannot press the button ‘Create’

error show :

HTTP Error 404.0 – Not Found

The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

Detailed Error Information:



Module
   IIS Web Core 

Notification
   MapRequestHandler 

Handler
   StaticFile 

Error Code
   0x80070002 



Requested URL
   http://localhost:80/Home/Create 

Physical Path
   C:\inetpub\wwwroot\Home\Create 

Logon Method
   Anonymous 

Logon User
   Anonymous