(window.webpackJsonp=window.webpackJsonp||[]).push([[13],{211:function(t,s,a){t.exports=a.p+"assets/img/forest_with_zoom.a43286ea.png"},212:function(t,s,a){t.exports=a.p+"assets/img/forest_fixed.a77f70f6.png"},261:function(t,s,a){"use strict";a.r(s);var e=a(10),n=Object(e.a)({},(function(){var t=this,s=t.$createElement,e=t._self._c||s;return e("ContentSlotsDistributor",{attrs:{"slot-key":t.$parent.slotKey}},[e("h1",{attrs:{id:"the-depth-buffer"}},[e("a",{staticClass:"header-anchor",attrs:{href:"#the-depth-buffer"}},[t._v("#")]),t._v(" The Depth Buffer")]),t._v(" "),e("p",[t._v("Let's take a closer look at the last example.")]),t._v(" "),e("p",[e("img",{attrs:{src:a(211),alt:"forest_with_zoom.png"}})]),t._v(" "),e("p",[t._v("Models that should be in the back are getting rendered ahead of ones that should be in the front. This is caused by the draw order. By default, pixel data from a new object will replace old pixel data.")]),t._v(" "),e("p",[t._v("There are two ways to solve this: sort the data from back to front, use what's known as a depth buffer.")]),t._v(" "),e("h2",{attrs:{id:"sorting-from-back-to-front"}},[e("a",{staticClass:"header-anchor",attrs:{href:"#sorting-from-back-to-front"}},[t._v("#")]),t._v(" Sorting from back to front")]),t._v(" "),e("p",[t._v("This is the go to method for 2d rendering as it's pretty easier to know what's supposed to go in front of what. You can just use the z order. In 3d rendering it gets a little more tricky because the order of the objects changes based on the camera angle.")]),t._v(" "),e("p",[t._v("A simple way of doing this is to sort all the objects by their distance to the cameras position. There are flaws with this method though as when a large object is behind a small object, parts of the large object that should be in front of the small object will be rendered behind. 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