LuxCoreRender Release Notes v2.12 - Revision history

Howetuft at 09:46, 8 November 2026

2026-11-08T09:46:00Z

← Older revision		Revision as of 10:46, 8 November 2026
Line 1:		Line 1:
			Nota bene: this is work-in-progress.

			LuxCore commit: d6fd9df0f64c6467082979c3f57649c984bfa3b1

			BlendLuxCore commit: 7cf5e35248d1c70276fd1ed029fddbfb4b13d87d


	= LuxCore =		= LuxCore =
	'''Features (of interest for users)'''		'''Features (of interest for users)'''

Howetuft: /* BlendLuxCore */

2026-11-08T06:52:35Z

BlendLuxCore

← Older revision		Revision as of 07:52, 8 November 2026
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	* OIDN firefly suppression option for the denoiser (#1106)		* OIDN firefly suppression option for the denoiser (#1106)
	* Subdivision node: enhanced mode is now the only mode (the "enhanced" toggle is gone); the former simple/uniform path remains available as the "subdiv_old" shape		* Subdivision node: enhanced mode is now the only mode (the "enhanced" toggle is gone); the former simple/uniform path remains available as the "subdiv_old" shape
	* Subdivision node: creases can now be None / Computed (from dihedral angles, as before) / Imported from the mesh data (Blender's crease_edge attribute)		* Subdivision node: creases can now be None / Computed (from dihedral angles, as before) / Imported from the mesh data. This allows to define creases in Blender and use them in Lux (Blender's crease_edge attribute)
	* New "Tessellate" shape node (flat tessellation, rate^2 triangles per source triangle). Aimed to be a faster alternative to subdivision in "subdivide -> displace -> simplify" workflow.		* New "Tessellate" shape node (flat tessellation, rate^2 triangles per source triangle). Aimed to be a faster alternative to subdivision in "subdivide -> displace -> simplify" workflow.
	* The merge-on-distance pre-step before subdivision is gone: coincident vertices are welded at export, so subdivided meshes no longer show gaps		* The merge-on-distance pre-step before subdivision is gone: coincident vertices are welded at export, so subdivided meshes no longer show gaps

Howetuft: /* BlendLuxCore */

2026-11-08T06:51:02Z

BlendLuxCore

← Older revision		Revision as of 07:51, 8 November 2026
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	* Subdivision node: enhanced mode is now the only mode (the "enhanced" toggle is gone); the former simple/uniform path remains available as the "subdiv_old" shape		* Subdivision node: enhanced mode is now the only mode (the "enhanced" toggle is gone); the former simple/uniform path remains available as the "subdiv_old" shape
	* Subdivision node: creases can now be None / Computed (from dihedral angles, as before) / Imported from the mesh data (Blender's crease_edge attribute)		* Subdivision node: creases can now be None / Computed (from dihedral angles, as before) / Imported from the mesh data (Blender's crease_edge attribute)
	* New "Tessellate" shape node (flat tessellation, rate^2 triangles per source triangle)		* New "Tessellate" shape node (flat tessellation, rate^2 triangles per source triangle). Aimed to be a faster alternative to subdivision in "subdivide -> displace -> simplify" workflow.
	* The merge-on-distance pre-step before subdivision is gone: coincident vertices are welded at export, so subdivided meshes no longer show gaps		* The merge-on-distance pre-step before subdivision is gone: coincident vertices are welded at export, so subdivided meshes no longer show gaps

Howetuft: /* BlendLuxCore */

2026-11-08T06:50:13Z

BlendLuxCore

← Older revision		Revision as of 07:50, 8 November 2026
Line 36:		Line 36:
	* OIDN firefly suppression option for the denoiser (#1106)		* OIDN firefly suppression option for the denoiser (#1106)
	* Subdivision node: enhanced mode is now the only mode (the "enhanced" toggle is gone); the former simple/uniform path remains available as the "subdiv_old" shape		* Subdivision node: enhanced mode is now the only mode (the "enhanced" toggle is gone); the former simple/uniform path remains available as the "subdiv_old" shape
			* Subdivision node: creases can now be None / Computed (from dihedral angles, as before) / Imported from the mesh data (Blender's crease_edge attribute)
	* New "Tessellate" shape node (flat tessellation, rate^2 triangles per source triangle)		* New "Tessellate" shape node (flat tessellation, rate^2 triangles per source triangle)
	* Subdivision node: creases can now be None / Computed (from dihedral angles, as before) / Imported from the mesh data (Blender's crease_edge attribute)
	* The merge-on-distance pre-step before subdivision is gone: coincident vertices are welded at export, so subdivided meshes no longer show gaps		* The merge-on-distance pre-step before subdivision is gone: coincident vertices are welded at export, so subdivided meshes no longer show gaps

Howetuft: /* LuxCore */

2026-11-08T06:49:39Z

LuxCore

← Older revision		Revision as of 07:49, 8 November 2026
Line 7:		Line 7:
	* New "tessellate" shape (flat triforce tessellation of a source mesh, props: source, rate) and test scenes scenes/displacement/tessellate*.{scn,cfg}. Can be a faster alternative to subdivision in "subdivide -> displace -> simplify" workflow.		* New "tessellate" shape (flat triforce tessellation of a source mesh, props: source, rate) and test scenes scenes/displacement/tessellate*.{scn,cfg}. Can be a faster alternative to subdivision in "subdivide -> displace -> simplify" workflow.
	* Subdivision shape: enhanced mode is now the default and only mode; the simple path is the separate "subdiv_old" shape; merge-on-distance pre-step removed		* Subdivision shape: enhanced mode is now the default and only mode; the simple path is the separate "subdiv_old" shape; merge-on-distance pre-step removed
	* Subdivision shape: new "creases" property (none / computed / imported); imported creases are read from PLY edge elements (vertex1/vertex2/crease) or passed via pyluxcore Scene.DefineMeshExt(crease_pairs=..., crease_weights=...)~~; new Scene~~.~~GetMeshCreaseCount()~~		* Subdivision shape: new "creases" property (none / computed / imported); imported creases are read from PLY edge elements (vertex1/vertex2/crease) or passed via pyluxcore Scene.DefineMeshExt(crease_pairs=..., crease_weights=...), for instance from Blender.
	* Faster startup: OpenCL kernels pre-compiled to SPIR-V at build time and cross-baked for all CI legs (work in progress, #733-#739); parallel CUDA/OpenCL kernel compilation with logging and cache management (#724, #725); opencl.splitkernels.enable property and split PathOCL micro-kernels (#726, #727); "Fill kernel cache" without rendering (#732)		* Faster startup: OpenCL kernels pre-compiled to SPIR-V at build time and cross-baked for all CI legs (work in progress, #733-#739); parallel CUDA/OpenCL kernel compilation with logging and cache management (#724, #725); opencl.splitkernels.enable property and split PathOCL micro-kernels (#726, #727); "Fill kernel cache" without rendering (#732)

Howetuft: /* LuxCore */

2026-11-08T06:48:20Z

LuxCore

← Older revision		Revision as of 07:48, 8 November 2026
Line 4:		Line 4:
	* OIDN firefly prefilter (#731)		* OIDN firefly prefilter (#731)
	* New parallel implementation of the Simplify shape, much faster; the legacy one kept as simplify_old (#723)		* New parallel implementation of the Simplify shape, much faster; the legacy one kept as simplify_old (#723)
	* Displacement shape parallelized with TBB (chunked pre-pass, no useless zero-fills, memory-budgeted chunking) (#742)		* Displacement shape parallelized with TBB (chunked pre-pass, no useless zero-fills, memory-budgeted chunking), much faster (#742)
	* New "tessellate" shape (flat triforce tessellation of a source mesh, props: source, rate) and test scenes scenes/displacement/tessellate*.{scn,cfg}		* New "tessellate" shape (flat triforce tessellation of a source mesh, props: source, rate) and test scenes scenes/displacement/tessellate*.{scn,cfg}. Can be a faster alternative to subdivision in "subdivide -> displace -> simplify" workflow.
	* Subdivision shape: enhanced mode is now the default and only mode; the simple path is the separate "subdiv_old" shape; merge-on-distance pre-step removed		* Subdivision shape: enhanced mode is now the default and only mode; the simple path is the separate "subdiv_old" shape; merge-on-distance pre-step removed
	* Subdivision shape: new "creases" property (none / computed / imported); imported creases are read from PLY edge elements (vertex1/vertex2/crease) or passed via pyluxcore Scene.DefineMeshExt(crease_pairs=..., crease_weights=...); new Scene.GetMeshCreaseCount()		* Subdivision shape: new "creases" property (none / computed / imported); imported creases are read from PLY edge elements (vertex1/vertex2/crease) or passed via pyluxcore Scene.DefineMeshExt(crease_pairs=..., crease_weights=...); new Scene.GetMeshCreaseCount()

Howetuft: /* BlendLuxCore */

2026-11-08T06:45:43Z

BlendLuxCore

← Older revision		Revision as of 07:45, 8 November 2026
Line 41:		Line 41:

	'''Bugfix'''		'''Bugfix'''
	* Fix multi-submesh objects overwriting each other in the exported scene (only the last submesh of a material was rendered, e.g. only one ear of Suzanne)
	* Fix UV-island run detection on seams
	* Fix sky3/sun3 viewport update issues and world_cache initialization (avoids unnecessary viewport retriggerings)		* Fix sky3/sun3 viewport update issues and world_cache initialization (avoids unnecessary viewport retriggerings)
	* Fix crash from an assert in Debug builds (LuxCore issue #716)		* Fix crash from an assert in Debug builds (LuxCore issue #716)
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	* Triangle indices are cast to uint32 at export (fixes pybind11 rejection of int64 arrays)		* Triangle indices are cast to uint32 at export (fixes pybind11 rejection of int64 arrays)
	* CI: bundle workflow attestation job renamed to attest-bundle (fixes the dangling attestation-url output) and skipped for fork PRs, which have no OIDC ID token		* CI: bundle workflow attestation job renamed to attest-bundle (fixes the dangling attestation-url output) and skipped for fork PRs, which have no OIDC ID token


	= LuxCoreDeps =		= LuxCoreDeps =

Howetuft: /* LuxCore */

2026-11-08T06:43:14Z

LuxCore

← Older revision		Revision as of 07:43, 8 November 2026
Line 1:		Line 1:
	= LuxCore =		= LuxCore =
	'''Features (of interest for users)'''		'''Features (of interest for users)'''
	* Buffer copies run in parallel on TBB; OpenMP removed from the tessellation and displacement code
	* New slg::GroupByEquivalence (parallel TBB union-find) replacing the quotient-set templates; 32-bit indices variant; exposed to Python as pyluxcore.union_find (#721, #745)
	* Displacement shape parallelized with TBB (chunked pre-pass, no useless zero-fills, memory-budgeted chunking) (#742)
	* New parallel implementation of the Simplify shape; the legacy one kept as simplify_old (#723)
	* Faster startup: OpenCL kernels pre-compiled to SPIR-V at build time and cross-baked for all CI legs (work in progress, #733-#739); parallel CUDA/OpenCL kernel compilation with logging and cache management (#724, #725); opencl.splitkernels.enable property and split PathOCL micro-kernels (#726, #727); "Fill kernel cache" without rendering (#732)
	* New Prague Sky Model (Wilkie 2021) light sources: sky3 (sky-only) and sun3 (#748)		* New Prague Sky Model (Wilkie 2021) light sources: sky3 (sky-only) and sun3 (#748)
	* OIDN firefly prefilter (#731)		* OIDN firefly prefilter (#731)
			* New parallel implementation of the Simplify shape, much faster; the legacy one kept as simplify_old (#723)
			* Displacement shape parallelized with TBB (chunked pre-pass, no useless zero-fills, memory-budgeted chunking) (#742)
	* New "tessellate" shape (flat triforce tessellation of a source mesh, props: source, rate) and test scenes scenes/displacement/tessellate*.{scn,cfg}		* New "tessellate" shape (flat triforce tessellation of a source mesh, props: source, rate) and test scenes scenes/displacement/tessellate*.{scn,cfg}
	* Subdivision shape: enhanced mode is now the default and only mode; the simple path is the separate "subdiv_old" shape; merge-on-distance pre-step removed		* Subdivision shape: enhanced mode is now the default and only mode; the simple path is the separate "subdiv_old" shape; merge-on-distance pre-step removed
	* Subdivision shape: new "creases" property (none / computed / imported); imported creases are read from PLY edge elements (vertex1/vertex2/crease) or passed via pyluxcore Scene.DefineMeshExt(crease_pairs=..., crease_weights=...); new Scene.GetMeshCreaseCount()		* Subdivision shape: new "creases" property (none / computed / imported); imported creases are read from PLY edge elements (vertex1/vertex2/crease) or passed via pyluxcore Scene.DefineMeshExt(crease_pairs=..., crease_weights=...); new Scene.GetMeshCreaseCount()
	* ~~Shared mesh point buffers~~: ~~pyluxcore DefineMeshExt accepts a mesh name as~~ "~~points~~" ~~to share the vertex buffer instead of copying~~		* Faster startup: OpenCL kernels pre-compiled to SPIR-V at build time and cross-baked for all CI legs (work in progress, #733-#739); parallel CUDA/OpenCL kernel compilation with logging and cache management (#724, #725); opencl.splitkernels.enable property and split PathOCL micro-kernels (#726, #727); "Fill kernel cache" without rendering (#732)



	'''Bugfix'''		'''Bugfix'''
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	* Serialize DLSCBvh/ELVCBvh/FilterLUT subtypes correctly (#757)		* Serialize DLSCBvh/ELVCBvh/FilterLUT subtypes correctly (#757)
	* Fix wheel-test on Windows		* Fix wheel-test on Windows


	'''Coding/Backend'''		'''Coding/Backend'''
	* ~~Buffer is now a class template~~		* Default branch renamed to main
			* New slg::GroupByEquivalence (parallel TBB union-find) replacing the quotient-set templates, much faster; 32-bit indices variant; exposed to Python as pyluxcore.union_find (#721, #745)
	* C++23; large raw-pointer removal campaign across the codebase (BVH, KdTree, distributions, lights, kernels, devices, meshes...) replaced by smart pointers/spans (#718, #719)		* C++23; large raw-pointer removal campaign across the codebase (BVH, KdTree, distributions, lights, kernels, devices, meshes...) replaced by smart pointers/spans (#718, #719)
	* Windows/macOS/clang build fixes (MSVC u_int, header self-containment, Shape ctor/dtor out-of-line, header-only fmt), CI concurrency control and timeouts for wheel builds		* Windows/macOS/clang build fixes (MSVC u_int, header self-containment, Shape ctor/dtor out-of-line, header-only fmt), CI concurrency control and timeouts for wheel builds
	* ~~Default branch renamed~~ to ~~main~~		* OpenMP removed from the tessellation and displacement code; replaced by TBB
			* Buffer is now a class template
			* Buffer copies run in parallel on TBB
			* Shared mesh point buffers: pyluxcore DefineMeshExt accepts a mesh name as "points" to share the vertex buffer instead of copying (save memory and time)

	= BlendLuxCore =		= BlendLuxCore =

Howetuft at 06:34, 8 November 2026

2026-11-08T06:34:36Z

← Older revision		Revision as of 07:34, 8 November 2026
Line 1:		Line 1:
	= ~~BlendLuxCore~~ =		= LuxCore =
	'''~~Coding/Backend~~'''		'''Features (of interest for users)'''
	* ...		* Buffer copies run in parallel on TBB; OpenMP removed from the tessellation and displacement code
			* New slg::GroupByEquivalence (parallel TBB union-find) replacing the quotient-set templates; 32-bit indices variant; exposed to Python as pyluxcore.union_find (#721, #745)
			* Displacement shape parallelized with TBB (chunked pre-pass, no useless zero-fills, memory-budgeted chunking) (#742)
			* New parallel implementation of the Simplify shape; the legacy one kept as simplify_old (#723)
			* Faster startup: OpenCL kernels pre-compiled to SPIR-V at build time and cross-baked for all CI legs (work in progress, #733-#739); parallel CUDA/OpenCL kernel compilation with logging and cache management (#724, #725); opencl.splitkernels.enable property and split PathOCL micro-kernels (#726, #727); "Fill kernel cache" without rendering (#732)
			* New Prague Sky Model (Wilkie 2021) light sources: sky3 (sky-only) and sun3 (#748)
			* OIDN firefly prefilter (#731)
			* New "tessellate" shape (flat triforce tessellation of a source mesh, props: source, rate) and test scenes scenes/displacement/tessellate*.{scn,cfg}
			* Subdivision shape: enhanced mode is now the default and only mode; the simple path is the separate "subdiv_old" shape; merge-on-distance pre-step removed
			* Subdivision shape: new "creases" property (none / computed / imported); imported creases are read from PLY edge elements (vertex1/vertex2/crease) or passed via pyluxcore Scene.DefineMeshExt(crease_pairs=..., crease_weights=...); new Scene.GetMeshCreaseCount()
			* Shared mesh point buffers: pyluxcore DefineMeshExt accepts a mesh name as "points" to share the vertex buffer instead of copying

	'''Bugfix'''		'''Bugfix'''
	* ~~...~~		* Subdivision shape memory bugs and crash on meshes with isolated vertices; cap adaptive subdivision level to prevent tessellation overflow (#753)
			* Fix SavePly crash on phantom empty AOV layers (#741); Fix ComputeNormals leaving meshes without normals (#743); transmit AOVs clamped against their own channel in VarianceClamping (#722)
			* Fix memory bugs from audit: bevel ownership, ExtTriangleMesh::Merge triAOV overflow, Buffer/ExtMeshProp sizing (#756); Properties move-assign self-move and dangling refs in luxcoreui (#755)
			* OpenCL: skip devices already listed by another platform (#728); fix backend availability detection (#729)
			* Serialize DLSCBvh/ELVCBvh/FilterLUT subtypes correctly (#757)
			* Fix wheel-test on Windows

	'''~~Features (of interest for users)~~'''		'''Coding/Backend'''
	* ...		* Buffer is now a class template
			* C++23; large raw-pointer removal campaign across the codebase (BVH, KdTree, distributions, lights, kernels, devices, meshes...) replaced by smart pointers/spans (#718, #719)
			* Windows/macOS/clang build fixes (MSVC u_int, header self-containment, Shape ctor/dtor out-of-line, header-only fmt), CI concurrency control and timeouts for wheel builds
			* Default branch renamed to main


	= ~~BlendLuxHelper~~ =		= BlendLuxCore =
	* ~~...~~		'''Features (of interest for users)'''
			* New Prague Sky Model (Wilkie 2021) light sources: sky3 (sky-only) and sun3 (#1108)
			* OIDN firefly suppression option for the denoiser (#1106)
			* Subdivision node: enhanced mode is now the only mode (the "enhanced" toggle is gone); the former simple/uniform path remains available as the "subdiv_old" shape
			* New "Tessellate" shape node (flat tessellation, rate^2 triangles per source triangle)
			* Subdivision node: creases can now be None / Computed (from dihedral angles, as before) / Imported from the mesh data (Blender's crease_edge attribute)
			* The merge-on-distance pre-step before subdivision is gone: coincident vertices are welded at export, so subdivided meshes no longer show gaps

	= LuxCore =		'''Bugfix'''
			* Fix multi-submesh objects overwriting each other in the exported scene (only the last submesh of a material was rendered, e.g. only one ear of Suzanne)
			* Fix UV-island run detection on seams
			* Fix sky3/sun3 viewport update issues and world_cache initialization (avoids unnecessary viewport retriggerings)
			* Fix crash from an assert in Debug builds (LuxCore issue #716)
			* Update LoL asset bar preview images for the Blender 5.0 API change

	'''Coding/Backend'''		'''Coding/Backend'''
	* ~~...~~		* Mesh export: coincident vertices are welded once per mesh and the point buffer is shared between all its submeshes (via the new sharing support in pyluxcore's DefineMeshExt), instead of being duplicated per submesh
			* Submeshes are split along UV seams (UV islands) at export; the union-find island computation is contracted to triangle level (much faster on large meshes) and skipped when the mesh has no UV layers
			* Triangle indices are cast to uint32 at export (fixes pybind11 rejection of int64 arrays)
			* CI: bundle workflow attestation job renamed to attest-bundle (fixes the dangling attestation-url output) and skipped for fork PRs, which have no OIDC ID token


	~~'''Bugfix'''~~		= LuxCoreDeps =
	* ...		* LuxCoreDeps 2.2.4 (OpenCL/CUDA kernel compilation improvements, #725)

	~~'''Features (of interest for users)'''~~
	* ...

	= ~~LuxCoreDeps~~ =		= BlendLuxHelper =
	* ...		* (no changes since v2.11)

CodeHD: Created page with "= BlendLuxCore = '''Coding/Backend''' * ... '''Bugfix''' * ... '''Features (of interest for users)''' * ... = BlendLuxHelper = * ... = LuxCore = '''Coding/Backend''' * ... '''Bugfix''' * ... '''Features (of interest for users)''' * ... = LuxCoreDeps = * ..."

2026-07-30T20:48:51Z

Created page with "= BlendLuxCore = '''Coding/Backend''' * ... '''Bugfix''' * ... '''Features (of interest for users)''' * ... = BlendLuxHelper = * ... = LuxCore = '''Coding/Backend''' * ... '''Bugfix''' * ... '''Features (of interest for users)''' * ... = LuxCoreDeps = * ..."

New page

= BlendLuxCore =
'''Coding/Backend'''
* ...

'''Bugfix'''
* ...

'''Features (of interest for users)'''
* ...

= BlendLuxHelper =
* ...

= LuxCore =

'''Coding/Backend'''
* ...

'''Bugfix'''
* ...

'''Features (of interest for users)'''
* ...

= LuxCoreDeps =
* ...