This asset provides a high-performance dynamic grass system designed for large-scale open environments.The system uses GPU instancing and shader-based animation to render thousands of grass blades efficiently while maintaining visual fidelity. Grass movement is driven entirely on the GPU using wind vectors and noise functions, eliminating per-frame CPU overhead.The system is fully customizable via material and shader parameters, allowing developers to fine-tune visual density, blade height, color variation, and wind behavior to match different environments.Designed for open-world, RPG, survival, and exploration games, this solution focuses on scalability, performance, and clean visual results without relying on heavy CPU calculations.🎨 Advanced Color & Surface ControlThe shader offers extensive color customization, including:Grass Color and Flower Color blending with terrain colorHue shifting and random value variation to break repetitionAdjustable specular and smoothness for different lighting scenariosNormal map support with controllable strengthGround-based Ambient Occlusion for natural surface blendingThese features ensure that large terrains remain visually rich and organic, even at scale.🌿 Subsurface Scattering (SSS)Built-in Subsurface Scattering simulates realistic light transmission through grass blades, creating soft and natural lighting—especially effective during sunrise and sunset scenes.HDR color support, combined with adjustable SSS strength, angle, and texture influence, makes the shader suitable for both realistic and stylized projects.🍃 Vertex-Based Wind AnimationThe shader includes a powerful vertex animation system that simulates natural grass movement:Wind noise, speed, strength, and direction controlDirectional influence and randomization for organic motionSmooth large-scale bending driven entirely on the GPUThis ensures believable wind behavior across vast environments without performance-heavy simulations.🚶➡️ Player InteractionGrass dynamically reacts to player movement:Distance-based bending and alignmentSmooth deformation and recoveryAdjustable interaction radius and strengthThis creates immersive, responsive environments where grass feels physically present in the world.🚀 Performance OptimizedFor large open environments, advanced optimization techniques such as GPU Instancing, Animation Culling, Occlusion Culling, and Terrain Distance–based optimization are used. All flowers are packed into a single texture, and all grass uses one shader and a single material.There is no code, no graphics API dependency, no additional components, and no unnecessary complexity.Despite having a very high grass density, the demo scene processes all grass in only 2–3 milliseconds. The system is designed to be extremely simple, clean, and efficient.✅ Key Features100% Shader Graph based (no scripts required)Highly customizable color, lighting, and animationSubsurface Scattering with HDR supportWind-driven vertex animationPlayer interaction supportOptimizationSupport for URP & HDRPPerfect for open-world games, stylized environments, and realistic outdoor scenes.INCLUDED:19x Model(8 Flower(+8 Group version), 2 Pampas Grass and 1 Grass Blade)19x Prefab1x Shader1x Material1x Editor Script(Bake Terrain Color)3x Sound(+1 Sound Controller Scirpt)1x Demo SceneTerrain Data, Terrain Textures, Terrain Layers for Demo SceneDocumentationNote: It has been tested on Unity 2022 and Unity 6 versions. Intermediate versions have not been tested, but it should work on all versions 2022 and above.It has been used as an auxiliary tool in flower production.
