A performant Screen Space Reflections (SSR) implementation for three.js, adding realistic reflections to 3D scenes using post-processing.
Screen Space Reflections is a three.js library that implements Screen Space Reflections (SSR), a graphics technique for adding realistic reflections to 3D scenes using data available on the screen. It solves the problem of achieving high-quality reflections in real-time web applications without requiring full ray tracing, enhancing visual fidelity efficiently.
WebGL developers and 3D artists using three.js or react-three-fiber who need to add realistic reflections to their scenes, particularly those working on interactive visualizations, games, or immersive web experiences.
Developers choose this for its performance optimizations, extensive configurability, and seamless integration with popular three.js workflows, offering a balance between visual quality and real-time rendering efficiency compared to more computationally expensive alternatives.
Implements Screen Space Reflections in three.js
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Uses temporal reprojection to reuse previous frames, reducing noise and improving reflection quality over time, as specified in the features list.
Implements early-out cases and WebGLMultipleRenderTargets for efficient rendering, leveraging WebGL2 to boost performance without full ray tracing.
Offers over 20 parameters like intensity, distance, and blur, allowing precise control over reflection appearance based on scene needs.
Supports box-projected environment maps to hide missing reflections, mitigating artifacts from screen-space limitations as described in the tips.
The repository is marked as deprecated and does not work with the latest three.js, forcing users to migrate to the new realism-effects repo for updates.
Requires manual tuning of parameters like thickness and maxDepthDifference to avoid visual artifacts, which can be time-consuming and scene-dependent, as admitted in the tips section.
Optimal performance relies on WebGLMultipleRenderTargets, a WebGL2 feature, limiting compatibility with older hardware or browsers without WebGL2 support.