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This age-old lighting technology enables fast and convincing shadow illumination under certain conditionsTechnical Overview Planar Shadows is a shadowing technique ideal for flat terrains. It achieves shadow-like visual effects by redrawing the mesh projection on the XZ plane. Compared to the widely-used ShadowMap technology, Planar Shadows excels in performance, requiring no RenderTexture resources and only an additional mesh render with simple shading.Advantages & FeaturesHigh Performance: Eliminates the need for RenderTexture resources, significantly boosting rendering speed.Easy Implementation: Achieve realistic shadow effects with an extra mesh render and basic shading.Easy Integration: Simply replace your current shader with the provided planar shadow shader, adjust a few parameters, and achieve outstanding shadow effects as demonstrated in our scene.Included ContentFour high-efficiency shaders:Pure Planar Shadow ShaderPlanar Shadow versions of Lit, SampleLit, and Unlit shadersFully authored using ASE Shader Editor, allowing for custom modificationsSupports Built-in Render Pipeline and multiple URP versions: URP 10+, URP 12+, URP 14+, URP 16+Important NotesDesigned for Flat Terrains: Due to its principles, planar shadows are only suitable for flat surfaces.Object Layout Suggestion: To maintain optimal shadow effects, shadow-casting objects should have minimal overlap with each other.Performance Enhancement When using a large number of planar shadow shaders, and if you are utilizing the URP render pipeline, you can further enhance performance with RenderFeature. The included manual explains everything!Technical Support If your version is unsupported or not functioning correctly, feel free to send an email or join our Discord for support. HDRP support is not planned at this time, as HDRP targets high-end PCs and consoles aiming for high-quality graphics, which might not be suitable for planar shadows. However, if you do need to use planar shadows in HDRP, please contact me directly, and I will provide updates with HDRP support.Example scenario:The sample scene is made in 2021.3, that is, URP12, and its default shader is also the version of URP12, if you are opening the sample scene in another version, please import the corresponding shader package, if you have any questions, please contact me!License Information"Deer Sculpture" (https://skfb.ly/owNtY) by Miaolailai is licensed under Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/).Please note that modifications were made to the original model's color to better fit the design of this product.Support:Whether it is a question, feature request, or suggestion, please contact the email:ripmuxiv@foxmail.com or Discord 。It's recommended that you use Discord to get faster feedback！Platform Support:PCAndroidWebGLiOSThe rest of the platforms have not been testedWritten entirely by ASE Shader EditorMulti-pass Rendering