Render Texture
Reference Manual > Components > Asset Components > Render Texture

Render Texture

Render Textures are special types of Textures that are created and updated at runtime. To use them, you first create a new Render Texture and designate one of your Cameras to render into it. Then you can use the Render Texture in a Material just like a regular Texture. The Water prefabs in Unity Pro standard assets are an example of real-world use of Render Textures for making real-time reflections and refractions.

Render Textures are a Unity Pro feature.

Properties

The Render Texture Inspector is different from most Inspectors, but very similar to the Texture Inspector.


The Render Texture Inspector is almost identical to the Texture Inspector

The Render Texture inspector displays the current contents of Render Texture in realtime and can be an invaluable debugging tool for effects that use render textures.

SizeThe size of the Render Texture in pixels. Observe that only power-of-two values sizes can be chosen.
Filtering ModeSelects how the Texture is filtered when it gets stretched by 3D transformations:
No FilteringThe Texture becomes blocky up close
BilinearThe Texture becomes blurry up close
TrilinearLike Bilinear, but the Texture also blurs between the different mip levels
AnisotropyIncreases Texture quality when viewing the texture at a steep angle. Good for floor and ground textures
Edge modeSelects how the Texture behaves when tiled:
RepeatThe Texture repeats (tiles) itself
ClampThe Texture's edges get stretched
Show AlphaIf enabled, the Texture's alpha channel will be displayed
Mip Level (un-editable)The current Mip Level that is displayed

Example

A very quick way to make a live arena-camera in your game:

  1. Create a new Render Texture asset using Assets->Create->Render Texture.
  2. Create a new Camera using GameObject->Create Other->Camera.
  3. Assign the Render Texture to the Target Texture of the new Camera.
  4. Create a wide, tall and thin box
  5. Drag the Render Texture onto it to create a Material that uses the render texture.
  6. Enter Play Mode, and observe that the box's texture is updated in real-time based on the new Camera's output.

Render Textures are set up as demonstrated above