Uploaded October 2020 | Updated September 2026, 3 weeks ago

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✔️ Works in 2020.1 ➕ 2020.2 ➕ 2020.3 🩹 Fixes for 2020.2 and .3:
► When you create a shader graph, set the material setting in the graph inspector to "Lit"
► "Albedo" has been renamed "base color" in the master stack
► Editing properties must be done in the graph inspector instead of the blackboard

Grass rendering is a challenging problem in many games. One way to take it is to use billboard or cross meshes. In this video, I explain how to animate such a mesh in Unity Universal Render Pipeline's shader graph and place grass prefabs in a pattern to naturally form a field.

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✨Follow up videos
► Adding trample effects: youtu.be/AmO7k-Lr0XM
► Compute shader grass: youtu.be/c1JThTu6-Ok

📚 Reference scripts
► GrassSpawner: gist.github.com/NedMakesGames/25646207903346a2ec2ab012ab2ac81e

⏲️ Timestamps:
0:00 Intro
0:28 Project setup
1:11 Shader graph
1:46 Adding wind
3:54 Placing in the world
6:12 Wrap up and credits

🎖️ Credits and references:
• Alan Zucconi, grass techniques: alanzucconi.com/2018/07/28/shader-showcase-saturday-3/#more-9545
• Casey Muratori, "The Nebraska Problem:" caseymuratori.com/blog_0011
• Salix alba, math to find circle intersections: math.stackexchange.com/questions/256100/how-can-i-find-the-points-at-which-two-circles-intersect
• AmBrSoft, Circle Circle Intersection: ambrsoft.com/TrigoCalc/Circles2/circle2intersection/CircleCircleIntersection.htm
• Christopher Figueroa, FPSController: github.com/kinifi/Unity-FPS-Controller
• Unity Technologies, grass textures: assetstore.unity.com/packages/essentials/asset-packs/standard-assets-for-unity-2018-4-32351
• Lennart Demes, ground texture: cc0textures.com/view?id=Ground003
• Procedural Worlds, skybox texture: assetstore.unity.com/packages/tools/terrain/gaia-2-terrain-scene-generator-42618
• Fabian Measures, music "『鯖江市日の出』Sabae Sunrise:" freemusicarchive.org/music/Fabian_Measures/Singles_Album/Sabae_Sunrise

#GameDev #IndieDev #Unity