Version: 2023.2
言語: 日本語
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Rendering order in the Built-in Render Pipeline

In the Built-in Render Pipeline, the order in which Unity renders objects is based on two things: which render queue the object is in, and how Unity sorts objects within that render queue.

Render queues

Unity sorts objects into groups called render queues. Unity renders the contents of one render queue, and then renders the contents of another render queue, and so on.

Unity has the following named render queues, which it renders in the following order:

Name Index 説明 
Background 1000 Use this queue for anything that should be drawn in the background of your Scene.
Geometry 2000 Use this queue for opaque geometry. This is the default queue.
AlphaTest 2450 Use this queue for alpha tested geometry. This is after the Geometry queue because it’s more efficient to render alpha-tested objects after all solid ones are drawn.
Transparent 3000 Use this queue for anything alpha-blended (shaders that don’t write to the depth buffer). Examples include glass, or particle effects.
オーバーレイ 4000 Use this queue for effects that are rendered on top of everything else, such as lens flares.

Note that Skybox materials are a special case. Unity draws Skybox materials after all opaque geometry (after queue index 2500), but before all transparent geometry (before queue index 2501).

Setting the render queue

By default, Unity places objects in the render queue specified in their Unity shader. You define this value using the [Queue] SubShader tag.

You can override this value on a per-material basis.

In the Unity Editor, you can do this in the material Inspector by setting the Render Queue property. In a C# script, you can do this by setting the value of Material.renderQueue using the Rendering.RenderQueue enum.

Sorting behaviors within render queues

Within each render queue, Unity sorts and draws objects based on their distance from the camera. The sorting behavior depends on the index of the render queue:

  • For queues with an index up to and including 2500 (Geometry + 500), Unity sorts Renderers in these queues using the behavior defined in OpaqueSortMode.FrontToBack by default.
  • For queues with an index of 2501 or above, Unity sorts Renderers in these queues using the behavior defined in TransparencySortMode.Default by default.

Setting the sorting behavior

How you change the sorting behavior within a render queue depends on the index of the render queue:

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