14. Related Resources / Next Steps

The goal of this book is to provide “a coordinate system for digging deep into URP/SRP.” Here we organize Official Documentation (Original) and Additional Learning Resources by purpose.

14.1 Official Documentation (Required)

RenderGraph(URP)

• RenderGraph outline/pass written by: https://docs.unity3d.com/Manual/urp/render-graph-write-render-pass.html
• RenderGraph Viewer: https://docs.unity3d.com/Manual/urp/render-graph-view.html
• Frame Data Access (UniversalResourceData, etc.): https://docs.unity3d.com/kr/6000.3/Manual/urp/accessing-frame-data.html
• ImportTexture / RTHandle: https://docs.unity3d.com/Manual/urp/render-graph-import-texture.html / https://docs.unity3d.com/Manual/urp/render-graph-rt-handle.html
• History Render Textures: https://docs.unity3d.com/Manual/urp/render-graph-history-render-textures.html
• Run compute shader in Render Pass (AddComputePass): https://docs.unity3d.com/Manual/urp/render-graph-compute-shader-run.html

URP Lighting/Forward+

• Forward+ additional light/keyword: https://docs.unity3d.com/6000.3/Documentation/Manual/urp/rendering/additional-lights-fplus.html

Shaders/HLSL(URP)

• URP Shader Library Method (Conversion): https://docs.unity3d.com/6000.3/Documentation/Manual/urp/use-built-in-shader-methods-transformations.html

SRP Batcher

• SRP Batcher Overview: https://docs.unity3d.com/Manual/SRPBatcher.html

Postprocessing (URP)

• Full Screen Pass Renderer Feature: https://docs.unity3d.com/Manual/urp/renderer-features/renderer-feature-full-screen-pass.html
• Volume support custom post: https://docs.unity3d.com/Manual/urp/post-processing/custom-post-processing-with-volume.html

14.2 Package Source (the most powerful learning material)

For URP/HDRP, the package source is the “correct answer.”

• Local: Packages/com.unity.render-pipelines.universal or Library/PackageCache/...
• GitHub (Graphics package monorepo): https://github.com/Unity-Technologies/Graphics

Recommended routine:

1. Follow the include of the URP Lit shader.
2. Check where the Forward+ light loop branches
3. Track what resources the Full Screen Pass Renderer Feature requires/creates
4. Compare which resources the RenderGraph pass reads/writes with Viewer and Source.

14.2.1 (Recommended) First fix “exact definition location” with Generated reference

Diving straight into the package source can make it difficult to know “where to start.”
This repository provides a workflow to automatically generate signatures/structs/macros/references (xrefs) by scanning local URP/Core sources.

• Creation instructions: @@TOK_2_396718ca@@
• One-click runner: tools/generate-all.ps1

With this flow, if you first fix the “definition location (file/line)” and then read the source, learning/debugging speed increases significantly.

14.3 Next practice task (in order of difficulty)

1. Simple color correction (gray/invert) implementation with Full Screen Pass + Injection Point comparison
2. Depth-based Outline implementation (including Depth linearization) + Comparison of Requirements settings
3. Normal-based edge implementation (normal space check) + MSAA case check
4. Implement downsample/upsample chain with RenderGraph (Blur/Bloom) + apply Blit optimization
5. Custom Lit (including additional lights) implementation that works with both Forward/Forward+
6. Implementing a time accumulation effect (simple TAA simulation) using the History texture

14.4 Candidates for the next expansion of this book (write more if you wish)

• RenderGraph’s Compute Pass/UAV pattern (SSR/SSAO/tile based)
• RendererList-based object draw (render specific layer/tag)
• Shader Variant stripping/build optimization (large-scale projects)
• Texture/coordinates/motion vector in XR (single pass instancing)