Procedurally generate custom 3D rock meshes and bake PBR textures using GPU Compute Shaders. Use 3D noise to sculpt geometry and scatter the results across your terrains. Free Lite version.Rock Generator Lite is a free procedural rock generation tool for Unity. It lets you create custom rock meshes, bake texture maps, generate clean prefabs, and test simple terrain scattering workflows directly inside the Unity Editor.This Lite version is intended as the entry point for the Rock Generator workflow. It is useful for testing the generator, learning the controls, and creating individual rock assets. If the workflow fits your project and you want to use it in a larger production environment, Rock Generator Pro is the recommended upgrade.Rock Generator Pro includes the Lite workflow and expands it with batch generation, a more advanced placer, local brush placement, higher texture resolutions, more generation and texturing options, runtime-oriented tools, and material/texture atlas combining.Generated Rocks Are YoursThe rocks you generate with this tool are your generated output assets.You may use, modify, sell, and redistribute generated rock meshes, materials, textures, and prefabs in your own games, demos, scenes, rendered media, asset packs, or commercial projects.This permission applies to generated output assets. It does not grant permission to redistribute the Rock Generator Lite or Rock Generator Pro package, source code, editor tools, compute shaders, documentation, demo scripts, or other original package files.Generated baked rocks are saved as normal Unity assets. The output can include prefabs, meshes, materials, texture maps, LODs, and optional colliders. Baked output uses standard Unity material paths where available, including URP Lit, HDRP Lit, and the Built-in Standard shader fallback. Once generated, baked rock prefabs do not require Rock Generator Lite MonoBehaviours to function as normal environment assets.Lightweight Package, Generated OutputRock Generator Lite does not ship with pre-made rock meshes, large texture libraries, or finished rock prefab libraries. The package is small because the included rocks are generated from code-based presets and procedural settings.The package includes 35 quick-start mathematical presets. These presets are intended as starting points that can be edited, randomized, and regenerated with different seeds.Preset styles include standard environment rocks and more stylized mineral or biome examples, such as:• Alien Geode• Deep Sea Hydrothermal Vent• Geometric Bismuth Cluster• Frost-Rimed Alpine Spire• Scorched Meteorite• Banded Iron Formation• Folded Metamorphic SchistBecause the generator is seed-based, each preset can produce a wide range of related variants. The goal is not to ship a fixed rock library, but to let you create the rock assets your project needs.Core Rock GenerationRock Generator Lite starts from a procedural base shape and applies configurable displacement, proportions, and noise controls.Main shape controls include:• Base Topology: Choose between Icosphere and CubeSphere base shapes. Icosphere works well for rounder boulders and organic shapes. CubeSphere is useful for blockier formations, slabs, pillars, and structural rock forms.• Size and Proportions: Control target diameter, prefab scale, fixed proportions, or seed-based randomized proportions.• Macro and Detail Noise: Shape the large silhouette separately from the smaller surface breakup.• Fractal Modes: Use Standard, Billow, Ridged, PingPong, and Swiss Erosion modes to create different displacement behavior.• Domain Warping: Add folded or flowing distortion for compressed or metamorphic-style shapes.• Voronoi: Create cellular cracks, facets, and mineral-like forms.• Terracing: Create stepped and layered shapes for sedimentary rocks, slabs, and cliffs.LOD generation is built into the prefab output. Rather than relying on a general mesh-collapse operation, the generator creates LOD meshes from different procedural resolutions. This helps keep the LODs predictable and avoids some of the UV and normal problems that can come from blind mesh reduction.Procedural Texturing and BakingRock Generator Lite supports several output texturing workflows.• Vertex Colors: Store procedural color data directly in the mesh. This can be useful for stylized, mobile, VR, or lightweight projects. A material or shader that reads vertex colors is required for this mode.• Procedural Texture Bake: Generate texture maps from procedural color, slope, cavity, normal, metallic, and smoothness settings.• Triplanar Input Bake: Use your own tiling albedo and normal textures as input, project them onto the generated rock, combine them with procedural overlays, and bake the result into regular texture maps.Texture baking uses a GPU Compute Shader. The baker can generate albedo, normal, packed mask, metallic, ambient occlusion, height, and smoothness-related outputs depending on the selected settings.Lite texture baking is capped at 1024x1024. Higher resolutions are available in Rock Generator Pro.Color and Surface OptionsRock Generator Lite includes three main procedural color patterns:• Slope & Cavity: Blend colors based on surface direction and cavity-style detail.• Sedimentary Strata: Generate layered horizontal banding for sandstone, shale, cliffs, and sedimentary forms.• Organic Patches: Create patch-based color variation for moss, lichen, mineral variation, and general breakup.The texture baker also includes procedural bump and micro-detail options for normal maps, plus simple metallic/mineral styles:• Ore Veins• Cavity Deposits• Crystalline NodulesThese mineral styles affect the baked material output. Lite does not generate separate physical crystal geometry. More advanced generation and texturing workflows are part of Rock Generator Pro.Live Preview WorkflowThe Rock Window is the main design workspace. It includes a settings panel and a 3D preview viewport so you can adjust the rock and inspect the result before saving a prefab.The preview workflow separates shape iteration from final asset output:• Fast Iteration: While editing shape and color settings, the tool can preview generated geometry and vertex-color style feedback without saving assets to disk.• Baked Preview: When using a texture bake mode, you can refresh the baked material preview to inspect the generated albedo, normal, mask, and mineral details before generating the final prefab.• LOD Inspection: The preview window includes an LOD selector with triangle count information so you can inspect how the generated rock changes across detail levels.• Wireframe Overlay: Where supported by the graphics API, the preview can display a wireframe overlay for checking topology density and LOD structure.Demo OrchestratorRock Generator Lite includes a Demo Orchestrator to help you test the workflow without setting up a scene from scratch.The Demo Orchestrator can:• Generate a temporary Unity Terrain test canvas.• Create simple procedural terrain textures and terrain layers.• Generate a demo rock from a preset or custom RockSettings profile.• Send the generated rock to the Rock Placer for scatter testing.• Purge generated demo assets when you are done testing.The demo scene and demo helper content are provided for onboarding. They can be safely removed after you understand the workflow. The core generator does not depend on the demo scene.Rock PlacerRock Generator Lite includes a basic terrain scattering utility.The Lite Rock Placer works with Unity Terrain and supports:• Prefab palettes• Weighted prefab selection• Spawn count• Random scale range• Slope limits• Height limits• Surface alignment• Vertical sink offset• Simple Perlin-noise clumpingThis placer is useful for testing generated rocks and creating simple scatter layouts. It is intentionally basic. Rock Generator Pro includes a more advanced placement workflow with additional placement controls and local brush placement.Scaling Up with Rock Generator ProRock Generator Lite is meant to give you a clear way to test the workflow before upgrading. It can generate usable individual rocks, but it has limits that matter as your project grows.Rock Generator Pro is the recommended version for production use. It can do the Lite workflow and adds tools for larger-scale asset generation, placement, and optimization.Rock Generator Pro adds:• Batch Rock Generation: Generate organized sets of rock variants from profiles instead of creating one rock at a time.• Advanced Rock Placer: A more capable placement workflow, including local brush placement and additional placement controls.• Material and Texture Atlas Combiner: Combine textures and materials into atlases for rocks and other assets. This helps reduce material fragmentation and can improve batching or instancing opportunities in larger scenes.• Higher Texture Resolutions: Bake above Lite’s 1024x1024 texture limit, including 2048x2048 and 4096x4096 workflows.• More Noise and Shape Options: Additional generation methods for a wider range of rock forms.• More Texturing Options: Additional ways to texture generated rocks and use more texture inputs.Support the ToolIf Rock Generator Lite helps you test the workflow or create useful rocks for your project, consider leaving a rating or review on the Unity Asset Store. Reviews help free tools stay visible and make continued maintenance easier to justify.Related Veridian Tools• Rock Generator Pro: The full version of this asset, with batch generation, higher texture resolutions, a more advanced placer, runtime-oriented tools, and material/texture atlas combining.• Texture Converter: A GPU-based tool for channel packing, resizing, and adjusting texture maps.• Mesh Constructor: A utility for combining or organizing dense prefab setups into more optimized static mesh structures.• BurstLOD: A tool for generating runtime or Editor-based LODs for custom meshes and environment assets.You can view the full catalog on my publisher page:https://assetstore.unity.com/publishers/120204Requirements and CompatibilityMinimum Unity Version: Unity 6 or newer.Render Pipelines: Generated baked materials use standard Unity material paths where available, including URP Lit, HDRP Lit, and the Built-in Standard shader fallback.Projects using custom shaders, custom render pipelines, or specialized material workflows may need to adjust generated materials after export.Native Unity Dependencies: Rock Generator Lite relies on standard Unity packages commonly available in modern Unity installations:• Unity.Burst• Unity.Collections• Unity.Mathematics• Unity Jobs systemThere are no external third-party DLL dependencies.Hardware Requirements: Texture baking requires Compute Shader support. This applies to the Editor texture baking workflow.Supported graphics APIs typically include DirectX 11/12, Vulkan, Metal, and modern OpenGL Core, depending on platform and Unity project settings.Already-generated baked prefabs can be used like normal Unity assets, assuming their referenced meshes, materials, and textures remain available.Package FootprintRock Generator Lite is intended to remain under 1 MB before generated output. It does not ship with pre-baked rock meshes, large texture libraries, or finished rock prefab libraries.The package consists mainly of:• C# scripts• Compute shader files• Assembly definitions• Text/readme files• Demo helper contentGenerated output will use normal project storage. Baked rocks can create meshes, materials, textures, prefabs, and optional collider data.Assembly ArchitectureRock Generator Lite is separated into four assemblies:1. Main Runtime AssemblyVeridian.RockGenLite.Runtime2. Main Editor AssemblyVeridian.RockGenLite.Editor3. Demo Runtime AssemblyVeridian.RockGenLite.Demo.Runtime4. Demo Editor AssemblyVeridian.RockGenLite.Demo.EditorEditor assemblies are stored in Editor folders and are excluded from player builds.The runtime assemblies remain separate from the Editor tooling. Generated baked rock prefabs do not require generator MonoBehaviours to be attached in order to function as normal static environment assets.Lite and Pro Project CoexistenceRock Generator Lite and Rock Generator Pro use distinct namespaces and isolated Assembly Definitions.Lite namespace:Veridian.RockGenLitePro namespace:Veridian.RockGenProBoth assets can exist in the same Unity project without script duplication conflicts.If you install Rock Generator Pro, it is usually best to remove the Lite package afterward unless you have a specific reason to keep both. Pro covers the Lite workflow and adds the fuller production toolset.Generated Prefab OutputGenerated baked rock prefabs are standard Unity assets.Output can include:• Prefab• Mesh assets• Material• Texture maps• LODGroup setup• Optional primitive, convex mesh, or exact mesh collider dataGenerated baked prefabs use common Unity components such as MeshFilter, MeshRenderer, LODGroup, materials, textures, and colliders.No generator MonoBehaviour is required on the generated baked prefab for it to function after export.Vertex Color output requires a material or shader setup that displays vertex colors correctly.Generated Asset Usage RightsGenerated rock output assets may be used, modified, sold, and redistributed in games, demos, scenes, rendered media, asset packs, or commercial projects.This applies to generated meshes, textures, materials, and prefabs.This does not grant permission to redistribute the Rock Generator Lite or Rock Generator Pro package, source code, editor tools, compute shaders, documentation, demo scripts, or other original package files.Core Processing ArchitectureCPU Mesh Generation: Base primitive construction, procedural displacement, normal calculation, vertex color generation, and LOD mesh generation use Unity’s Job System and Burst where applicable.LOD Generation: LOD meshes are generated from different procedural resolutions rather than from a general-purpose mesh-collapse decimation pass.GPU Texture Baking: Procedural texture baking is handled by the included compute shader:RockBakerLite.computeThe compute shader evaluates procedural color, slope, cavity, normal, metallic, smoothness, and related texture data depending on the selected settings.Edge Padding: The texture baker uses a Jump Flood Algorithm style padding pass to extend texture data around UV islands. This helps reduce visible mipmap bleeding at UV seams.Texture OutputsDepending on settings, Rock Generator Lite can generate:• Albedo• Normal• Packed Mask Map• Metallic• Ambient Occlusion• Height• SmoothnessPacked Mask Map layout in Lite:• Red: Metallic• Green: Ambient Occlusion• Blue: Unused / zero• Alpha: SmoothnessHeight is not packed into the blue channel in Lite. If height generation is enabled, it is saved as a separate height texture.Texture Resolution LimitRock Generator Lite caps texture baking at:1024x1024Higher-resolution baking, including 2048x2048 and 4096x4096 workflows, is available in Rock Generator Pro.Runtime NotesRock Generator Lite includes runtime-side mesh generation infrastructure because the Editor tools use the same procedural mesh generation pipeline internally.The recommended Lite workflow is still Editor-first:1. Generate rocks in the Editor. 2. Save them as prefabs. 3. Use the generated prefabs in scenes and builds.Runtime texture baking is not part of the Lite workflow.For runtime generation, use a suitable shared material or vertex-color shader setup. Rock Generator Pro is the recommended version for runtime-oriented projects because it includes a fuller MonoBehaviour-based runtime workflow.Collider OptionsRock Generator Lite supports several collider modes:• None• Primitive Box• Primitive Sphere• Convex Mesh• Exact MeshPrimitive colliders are the lightest option.Convex Mesh is the safest general-purpose choice for most generated rocks.Exact Mesh creates a non-convex mesh collider from a generated LOD mesh. It should be reserved for static environment pieces that require detailed collision, such as large cliff surfaces or walkable rock formations.Performance and Optimization NotesLite can create unique materials and textures for generated baked rocks. This is useful for variation, but large scenes with many unique baked rocks may create material fragmentation.For Lite projects, a practical workflow is to generate a smaller set of reusable rock prefabs and instance them throughout the scene.Rock Generator Pro includes a material and texture atlas combiner for rocks and other assets. It is the recommended option for larger libraries, large terrain placement, and stronger optimization workflows.Demo ContentThe demo scene and demo helper scripts are included for onboarding.The demo content can be removed after you understand the workflow. The core generator does not depend on the demo scene.The Demo Orchestrator saves temporary generated content to a demo output folder by default and includes a purge option for generated demo assets.
