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IfcOpenShell / IfcOpenShell Public

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Ifcviewer - an ultra fast ifcopenshell viewer and app#7930

Draft

Moult wants to merge 37 commits intodatamodel-v1.0IfcOpenShell/IfcOpenShell:datamodel-v1.0from

ifcviewerIfcOpenShell/IfcOpenShell:ifcviewerCopy head branch name to clipboard

Conversation Commits37 (37)Checks Files changed

Draft

Ifcviewer - an ultra fast ifcopenshell viewer and app#7930
Moult wants to merge 37 commits intodatamodel-v1.0from
ifcviewer

Commits

Commits on Apr 13, 2026

Bump util from v0.8.0 branch
Moult
committed
Local hacks to compile and monkey patch issues in the Python world
Moult
committed
Dump of hello world ifc viewer code
Moult
committed
More hacks to compile
Moult
committed
Update ifcviewer to compile with datamodel refactor
Moult
committed
Plan out performance strategy
Moult
committed
Per-object frustum culling with glMultiDrawElements

Moult
and
claude
committed
Add performance stats overlay in status bar

Moult
and
claude
committed
Multi-model project support with sequential loading

Moult
and
claude
committed
Update README for multi-model support and frustum culling

Moult
and
claude
committed
BVH frustum culling, sidecar cache, per-model buffers, progressive upload

Moult
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claude
committed
Add profiling for VRAM, FPS ratios, and instancing analysis

Moult
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claude
committed
Leaf-batched BVH draw commands

Moult
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claude
committed
GPU instancing: streamer, viewport, shaders rewritten

Moult
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claude
committed
Sidecar v4: persist instanced geometry + metadata

Moult
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claude
committed
BVH frustum culling over instances

Moult
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claude
committed
Progressive rendering during streaming

Moult
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claude
committed
Collapse per-mesh draws into glMultiDrawElementsIndirect

Moult
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claude
committed
Two-sided lighting, rename misleading draw-count stat

Moult
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claude
committed
Enable reorient-shells in geometry iterator

Moult
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claude
committed
Backface culling with reflection-aware two-pass MDI

Moult
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claude
committed
Rewrite README for instancing pipeline and refocus Phase 3

Moult
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claude
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Pivot Phase 3: diagnose as draw-bound, not upload-bound

Moult
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claude
committed
Phase 3A: screen-space contribution culling

Moult
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claude
committed
README: mark Phase 3A done with measured numbers

Moult
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claude
committed
Phase 3B: per-instance LOD via meshoptimizer simplifySloppy

Moult
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claude
committed
Phase 3C: Hierarchical-Z occlusion culling (CPU-side v1)

Moult
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claude
committed

Commits on Apr 14, 2026

Cull: read AABBs from compact bvh_items in the hot path

Moult
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claude
committed
Cull: skip cullAndUploadVisible + HiZ on still frames

Moult
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claude
committed
ifcviewer: event-driven rendering, idle scenes cost zero CPU

Moult
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claude
committed
ifcviewer: quantize VBO to 16 B/vertex (sidecar v6)

Moult
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claude
committed
ifcviewer: README — document event-driven rendering and VBO quantization

Moult
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claude
committed

Commits on Apr 15, 2026

ifcviewer: parallel per-model CPU cull

Moult
and
claude
committed
ifcviewer: README — document parallel per-model cull (Phase 3D)

Moult
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claude
committed
ifcviewer: disable HiZ cull when camera has moved

Moult
and
claude
committed
ifcviewer: fix pick-pass cull corruption and cached-model ID collisions
Moult
committed
ifcviewer: README — document HiZ disabled during camera motion
Moult
committed

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