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Sample output textures in a shader

Read the data from a depth texture or a motion vector texture in custom shader code.
Read time 1 minuteLast updated 21 days ago
Important
The Built-In Render Pipeline is deprecated and will be made obsolete in a future release.
It remains supported, including bug fixes and maintenance, through the full Unity 6.7 LTS lifecycle.
For more information on migration, refer to Migrating from the Built-In Render Pipeline to the Universal Render Pipeline and Render pipeline feature comparison.
Depth textures are available for sampling in shaders as global shader properties. By declaring a sampler called 
_CameraDepthTexture
you will be able to sample the main depth texture for the camera.
_CameraDepthTexture
always refers to the camera's primary depth texture. By contrast, you can use 
_LastCameraDepthTexture
to refer to the last depth texture rendered by any camera. This could be useful for example if you render a half-resolution depth texture in script using a secondary camera and want to make it available to a post-process shader.
In the Built-In Render Pipeline, the motion vectors texture (when enabled) is available in Shaders as a global Shader property. By declaring a sampler called '_CameraMotionVectorsTexture' you can sample the Texture for the currently rendering Camera. When sampling from this texture motion from the encoded pixel is returned in a range of -1..1. This will be the UV offset from the last frame to the current frame.

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