SDF.R
Pioneering the Next Generation of Blender Modeling

SDF.R is a groundbreaking engine designed to bring the power of Signed Distance Fields (SDF) to Blender with unprecedented speed. As the first-ever add-on in its class to integrate a custom Rust-GPU backend, SDF.R sets a new standard for performance and topological quality.

STABLE & HIGH PERFORMANCE
Main Engine: Marching Cubes (MC) | Experimental Feature: Dual Contouring (DC)
SDF.R primarily features a Marching Cubes (MC) engine that combines stability with high performance.

Looking toward future development, it also includes an experimental GPU-accelerated Dual Contouring (DC) engine for users seeking cutting-edge sharpness. By utilizing a custom QEF (Quadratic Error Function) solver, this experimental DC mode preserves sharp corners and creases (such as box edges) that tend to be smoothed out in conventional SDF environments.

However, since the MC engine takes priority, please understand that DC is strictly an experimental implementation and may be unstable.

SDF.R V15.9.9.4 Release Notes — Real-Time Viewport Responsiveness
A focused performance update for the interactive viewport. As scenes accumulate more primitives, moving the camera or dragging objects could start to feel sluggish because the real-time Ghost Preview was rebuilt from scratch every single frame. V15.9.9.4 removes that redundant work. No workflow changes and fully backward compatible — existing scenes and parameters behave exactly as before, just more responsive.

Ghost Preview: Cached GPU Buffer
Camera navigation no longer rebuilds the preview: Orbiting, panning, and zooming don’t change your primitives, so the GPU primitive buffer is now cached and reused across frames. The expensive per-frame stack scan, matrix decomposition, data packing, and texture upload are skipped entirely while you simply look around.
Automatic, always-fresh invalidation: The cache is rebuilt only when something that actually affects the shape changes — a transform, a parameter tweak, an undo/redo, or a stack edit — so the preview never goes stale.
Adaptive Preview Quality
Interactive step reduction: While you navigate the viewport or transform objects, the raymarching step count is temporarily capped to keep interaction fluid — the heavier the scene, the more this helps.
Full quality on release: The instant you stop moving, the preview automatically redraws one final frame at full quality, so the still image you inspect is always the high-detail version.
Mesh-Off Fast Path
Lighter transforms while sculpting with the mesh hidden: When “Show Result Mesh” is OFF, transform updates now return early — after keeping the stack and parenting in sync — skipping the full per-primitive fingerprint, rebuild, and mesh request. This pairs perfectly with the “Ghost Preview Only” workflow introduced in V15.9.9. 

Downloads Section Below:

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Filename: SDF-R v15.9.9.4_vfxMed.rar [37.1 MB]

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