fix: match raster Gaussian radius cap in compute GSplat renderer#8573
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mvaligursky merged 1 commit intomainfrom Apr 2, 2026
Merged
fix: match raster Gaussian radius cap in compute GSplat renderer#8573mvaligursky merged 1 commit intomainfrom
mvaligursky merged 1 commit intomainfrom
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The raster path caps each eigenaxis half-extent at vmin pixels. The compute path was using 2*vmin, letting large transparent splats retain their full natural Gaussian falloff while the raster path steepened them. This caused up to ~2x per-pixel opacity discrepancy, worsening at lower resolutions. Align maxRadius and tile bounding-box clamp to vmin to match. Made-with: Cursor
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Align the compute renderer's maximum projected Gaussian extent with the raster renderer's per-eigenaxis cap at
vminpixels.Changes:
vmin = min(1024, min(width, height))pixels. The compute path was using2 * vmin, allowing large splats to retain their full natural Gaussian falloff while the raster path steepened them. This made large, mostly-transparent splats appear significantly more opaque in the compute renderer — up to ~2x per pixel — with the discrepancy increasing at lower resolutions as more splats exceeded the raster cap.maxRadiusincomputeSplatCovfrom2 * vmintovminto match.computeSplatTileEvalaccordingly.