Render passes in the Deferred and Deferred+ rendering paths in URP

Learn about the sequence of render pass events in the Deferred rendering path.

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The following table lists the render passes that both the Deferred and Deferred+ rendering paths use.

Render event	Render pass that occurs after the render event	Description
BeforeRendering	-	-
BeforeRenderingShadows	-	-
AfterRenderingShadows	-	-
BeforeRenderingPrePasses	DepthPrepass, or DepthPrepass and DepthNormalPrepass.	Render depth and normal textures in a prepass, for materials that Unity renders in a Forward pass.
AfterRenderingPrePasses	-	-
BeforeRenderingGbuffer	GBufferPass	Render the G-Buffer, then copy the G-Buffer depth texture.
AfterRenderingGbuffer	SSAO	Calculate the screen space ambient occlusion (SSAO) texture. Unity calculates this here only if you enable SSAO, and disable After Opaque.
BeforeRenderingDeferredLights	Deferred Pass	Deferred rendering. Unity uses the SSAO texture during this render pass, if it was created.
AfterRenderingDeferredLights	-	-
BeforeRenderingOpaques	-	Render opaque forward-only materials.
AfterRenderingOpaques	-	Calculate and blend the screen space ambient occlusion (SSAO) texture. Unity calculates this here only if you enable SSAO, and enable After Opaque.
BeforeRenderingSkybox	-	-
AfterRenderingSkybox	-	-
BeforeRenderingTransparents	-	-
AfterRenderingTransparents	-	-
BeforeRenderingPostProcessing	-	-
AfterRenderingPostProcessing	-	-
AfterRendering	-	-

For the full list of render events, and injection points for custom render passes, refer to Injection points reference for URP.

Source code reference

The following table lists the files that contain code related to the Deferred rendering path, located in the

com.unity.render-pipelines.universal

folder.

File path	Description
`Runtime/DeferredLights.cs`	Defines the main class that handles the Deferred rendering path.
`Runtime/Passes/GBufferPass.cs`	Implements a `ScriptableRenderPass` for the G-buffer rendering pass.
`Runtime/Passes/DeferredPass.cs`	Implements a `ScriptableRenderPass` for the Deferred shading pass.
`Shaders/Utils/StencilDeferred.shader`	Defines the rendering behavior for stencil-based deferred lighting when using the Deferred rendering path.
`Shaders/Utils/ClusterDeferred.shader`	Defines the rendering behavior for cluster-based deferred lighting when using the Deferred+ rendering path.
`ShaderLibrary/GBufferInput.hlsl`	Contains utility functions for reading material properties from the G-buffers in the Universal Render Pipeline (URP).
`ShaderLibrary/GBufferOutput.hlsl`	Contains utility functions for writing material properties to the G-buffers in URP.