Cloud Cast: Procedural Cloud Shadows & Parallax for URP
SplashArt Toolbox
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Enhance URP scenes with Cloud Cast. A highly optimized, Render Graph native procedural cloud shadow system with wind animation and light-aligned projection.Cloud Cast is a highly optimized procedural cloud shadow post-processing effect built exclusively for Unity 6 and URP. Effortlessly generate dynamic cloud cover shadows without the immense performance cost of actual volumetric cloud geometry. Designed by professionals, for professionals. Key Benefits & Workflow:Procedural FBM Shapes: Cloud patterns are generated entirely in the shader using Fractal Brownian Motion (FBM) noise. Choose between Value, Perlin, and Simplex algorithms for ultimate artistic control. Zero-Friction Setup: Fully Volume-driven. Drop it into your URP Post-Processing Volume, apply the Renderer Feature, and see instant results in Edit and Play mode. Light-Aligned Projection: Shadows are projected along your main Directional Light from a configurable virtual cloud plane, producing realistic parallax as the sun angle changes throughout the day. Wind Animation & Coverage: Bring your sky to life with scrolling wind animation. Fully control the cloud coverage threshold and edge softness to simulate anything from a light breeze to a heavy storm. Extreme Performance: Utilizes an R8 single-channel shadow mask to minimize bandwidth. Features automatic LOD distance octave reduction and downscaled processing (Full, Half, Quarter) for massive framerate gains on mobile. Production Ready: Clean, fully documented C# API allows for seamless runtime parameter modifications during gameplay or dynamic weather transitions. 🤝 Community, Support & PortfolioLive Support & Community: Join my Discord Server to share your cinematic renders, give feedback, and get fast live support directly from me. As a solo developer, I deeply value community input and actively use it to constantly improve my tools!Official Contact: Prefer traditional communication? You can always reach out to me directly via my support email for any technical inquiries, bug reports, or assistance.Explore More: Elevate your workflow further. Check out my full portfolio of production-ready tools and highly optimized systems on my Frankentools Publisher Page.Requires Unity 6 (6000.0) or newer.Requires Universal Render Pipeline (URP) 17.0.0 or newer.Requires Depth Texture enabled in URP Pipeline Asset.Render Graph native implementation (Not compatible with Built-In, HDRP, or older Unity versions lacking Render Graph).Procedural FBM noise shadow mask generation (Value, Perlin, Simplex).Light-aligned directional projection with sun angle parallax.Advanced Depth Masking (near fade, far fade) and Height Masking to prevent shadows on objects above the cloud layer.Automatic LOD distance scaling for FBM octave reduction.Downscaled R8 single-channel shadow mask rendering (Full, Half, Quarter).Normalized 0–1 Volume parameters with internal artist-friendly remapping.Fully accessible C# API for runtime modifications via VolumeManager stack.Comprehensive offline documentation (.pdf) included.Generative AI Bezi was used to assist in writing and structuring the C# backend code for the render feature, volume components, projection math, and noise algorithms. The code was subsequently manually reviewed, optimized, and integrated into the final Render Graph native architecture by a human developer.



