ProStream

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Note: ProStream is designed for advanced Unity developers familiar with DOTS/ECS concepts.

ProStream is a DOTS/ECS world streaming toolkit designed to address the performance overhead of traditional Unity GameObject scene streaming. By providing comprehensive tooling that automates the conversion of large, heavy scenes into fast-loading, memory-efficient Entity SubScenes, ProStream empowers you to build high-performance, seamlessly streaming worlds with exceptional performance.

Whether you are developing open-world games, massive simulations, or complex architectural visualizations, ProStream leverages the power of Unity's Entity Component System (ECS), the Burst Compiler, and the C# Job System to eliminate loading stalls and reduce memory overhead.

Why Choose DOTS/ECS Streaming?

Traditional GameObject Scene streaming can cause significant memory spikes and stuttering/stalls due to sudden and large amounts of MonoBehaviour instantiations on the main thread when a Scene is loaded. This can often result in massive and very noticeable frame rate drops.

ProStream uses asynchronous Entity SubScene streaming. This means zero-stall and spikeless background loading, reduced memory footprints, and the ability to stream scalable, highly detailed environments seamlessly without sacrificing performance.

Intelligent Scene Analysis: The core preprocessing engine evaluates scene object bounds and density, utilizing an adaptive Quadtree algorithm to dynamically partition your world into balanced, memory-efficient streaming chunks.

GameObject-to-Entity Conversion: Quickly and easily convert Unity GameObject scenes into effecient, streamable, DOTS-ready Entity SubScenes.

Advanced Rule-Based Matching: Leverage powerful, customizable rules and queries to automatically categorize GameObjects into distinct streaming layers which enables independant loading ranges and streaming behaviors.

High-Performance Runtime Streaming: Implements SubScene streaming utilizing Unity ECS and multi-threaded Burst-compiled jobs for maximum CPU efficiency.

Proximity-Driven Loading: Dynamically evaluates distance thresholds in parallel to seamlessly load and unload scene content as the player navigates the world.

Responsive Streaming Control: Adjust loading ranges and streaming parameters at runtime for precise, dynamic control over your world's memory footprint.

Built-in Diagnostics & Validation: A comprehensive diagnostic framework can help identifiy and resolve potential Entity conversion issues (e.g., incompatible shaders, missing colliders, invalid bounds) before they become runtime problems.

Visual Debugging Tools: Built-in editor visualizations allow you to inspect distance thresholds and streaming behavior in real-time.

Due to the advanced nature and complexity of DOTS/ECS, support is limited to ProStream's tools and workflows. Please be aware that we are unable to provide general support, tutorials, or troubleshooting for core Unity DOTS/ECS concepts and development.

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These planned features are designed to expand ProStream into a comprehensive, world-building and streaming toolchain:

DataObjects: Compact, reusable prefab data workflows that reduce duplication while actively shrinking memory footprint and build size.-

RemoteScenes: Referenced-scene processing workflows that make dense, heavily populated environments easier to prepare and iterate on in smaller units.-

Terrain System: Planned Unity Terrain conversion pipeline for spatial mapping, mesh chunking, and proximity-driven detail streaming in a ProStream-friendly format.-

Visibility Culling: Frustum-aware section culling designed to reduce unnecessary runtime work when dense scene content moves out of view.-

Impostors: Atlas-based long-range rendering workflow for replacing distant complex geometry with significantly lighter visual representations.

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FAQ

Q: Is my favorite Asset Store pack/kit/model compatible with ProStream?

A: ProStream is compatible with any asset that is compatible with DOTS/ECS. Though, DOTS/ECS has stricter requirements than traditional GameObject workflows. Some assets may require minor adjustments (such as updating custom shaders, fixing invalid mesh data, etc). ProStream includes built-in diagnostic tools to help you quickly identify and fix many common compatibility issues.

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Q: Can I use/create my own DOTS/ECS features/components/systems alongside ProStream?

A: Certainly! You can create your own custom DOTS/ECS components, systems, and features which either integrate with ProStream's workflows or run independently alongside them.

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Known DOTS/ECS Limitations and Existing/Planned ProStream Solutions:

Physics Interaction: The Unity Physics (DOTS) and standard PhysX (GameObjects) systems are isolated. Entities cannot natively collide with GameObjects unless data is manually synced across systems.

ProStream's ColliderObjectsWorkflow provides a streamlined solution for this.

Native Engine Implementations/Plans

Terrain: Standard Unity Terrains are not currently supported by DOTS/ECS and cannot be directly converted into ECS entities.

ProStream's TerrainWorkflow is in development to address this gap (unless Unity provides a native solution first).

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ProStream Documentation