Perf: rigged alpha-blend load in crowds (5M tris/frame) #260

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opened 2026-10-03 02:34:27 +00:00 by sky_line · 0 comments

sky_line commented

2026-10-03 02:34:27 +00:00

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Measured at a Baltimare party (85 avatars, 4K, 5090, FSR native AA, RT shadows): ~47-54 FPS, GPU ~20 ms ≈ CPU main ~21 ms (balanced).

pass2 post_rig = 5.0M rigged alpha-blend triangles/frame (1.15 ms) plus their share of preskin and BLAS refits. Ideas: distance/size cull or LOD for rigged blend meshes, treat nearly-opaque blend as masked, cap per-avatar blend tris beyond N m, honour complexity/impostor settings more aggressively for blend content.

Measured at a Baltimare party (85 avatars, 4K, 5090, FSR native AA, RT shadows): ~47-54 FPS, GPU ~20 ms ≈ CPU main ~21 ms (balanced). pass2 post_rig = 5.0M rigged alpha-blend triangles/frame (1.15 ms) plus their share of preskin and BLAS refits. Ideas: distance/size cull or LOD for rigged blend meshes, treat nearly-opaque blend as masked, cap per-avatar blend tris beyond N m, honour complexity/impostor settings more aggressively for blend content.

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2026-10-03 02:34:27 +00:00

sky_line added this to the Slipstream project

2026-10-06 15:04:14 +00:00

sky_line referenced this issue

2026-10-10 09:17:10 +00:00

Alpha pass costs 2.3-2.9 ms #4