Integrate NeL 3D decal system from feature/decals branch - #762

Draft

kaetemi with Copilot wants to merge 27 commits into

core4from

copilot/integrate-nel-3d-decals

Commits on Feb 13, 2026

Initial plan
Copilot
committed
e7146be
Initial plan for NeL 3D decal integration

Copilot
and
kaetemi
committed
198fdfe
Add NeL 3D decal system and rename Ryzom client decal to CLegacyDecal

Copilot
and
kaetemi
committed
54c43af
Fix code review issues: bug in addDecal iterator, nlassert misuse, and typos

Copilot
and
kaetemi
committed
9984e15
Rename ryzom client decal files to match renamed classes (decal → legacy_decal)

Copilot
and
kaetemi
committed
8ee3ca1
Plan: Implement final decal design from PDF pseudocode

Copilot
and
kaetemi
committed
912f22f
Implement final decal design from PDF: clip(), batched rendering, UV generation, clipping modes

Copilot
and
kaetemi
committed
c435892
Revert accidentally modified unrelated files (line ending changes)

Copilot
and
kaetemi
committed
3aa6720
Phase 1: Add landscape support to decal system via CShadowPolyReceiver::receiveDecal()

Copilot
and
kaetemi
committed
d5d501c
Phase 2: Port vertex program from legacy decal (distance fade, Z blend, per-vertex color)

Copilot
and
kaetemi
committed
b97ab8b
Phase 3: Feature parity — priority ordering, down-facing clip, custom UV matrix, helper matrices, mask texture

Copilot
and
kaetemi
committed
e362006
Phase 4: Optimize VB lock granularity, fix first-frame bug, add mipmap limiting for atlas textures

Copilot
and
kaetemi
committed
00eb072
Co-authored-by: kaetemi <1581053+kaetemi@users.noreply.github.com>
Copilot
committed
698ba81
Merge branch 'core4' of https://github.com/ryzom/ryzomcore into copilot/integrate-nel-3d-decals
Copilot
committed
201e717
Merge core4 branch and apply v[3].w VP bugfix to new decal system

Copilot
and
kaetemi
committed
abe102a

Commits on Feb 14, 2026

Commits on Feb 18, 2026

Merge branch 'core4' into copilot/integrate-nel-3d-decals
kaetemi
committed
5f97131
Fix texture rendering: use CPU-precomputed UVs in VB instead of broken TexCoordGen approach

Copilot
and
kaetemi
committed
cfb7662
Fix batch material tracking: use batchMat pointer instead of index arithmetic

Copilot
and
kaetemi
committed
d28bfcc

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Integrate NeL 3D decal system from feature/decals branch - #762

Integrate NeL 3D decal system from feature/decals branch#762
kaetemi with Copilot wants to merge 27 commits into
core4from
copilot/integrate-nel-3d-decals

Commits on Feb 13, 2026

Initial plan

Initial plan for NeL 3D decal integration

Add NeL 3D decal system and rename Ryzom client decal to CLegacyDecal

Fix code review issues: bug in addDecal iterator, nlassert misuse, and typos

Rename ryzom client decal files to match renamed classes (decal → legacy_decal)

Plan: Implement final decal design from PDF pseudocode

Implement final decal design from PDF: clip(), batched rendering, UV generation, clipping modes

Revert accidentally modified unrelated files (line ending changes)

Phase 1: Add landscape support to decal system via CShadowPolyReceiver::receiveDecal()

Phase 2: Port vertex program from legacy decal (distance fade, Z blend, per-vertex color)

Phase 3: Feature parity — priority ordering, down-facing clip, custom UV matrix, helper matrices, mask texture

Phase 4: Optimize VB lock granularity, fix first-frame bug, add mipmap limiting for atlas textures

Co-authored-by: kaetemi <1581053+kaetemi@users.noreply.github.com>

Merge branch 'core4' of https://github.com/ryzom/ryzomcore into copilot/integrate-nel-3d-decals

Merge core4 branch and apply v[3].w VP bugfix to new decal system

Commits on Feb 14, 2026

Phase 5: Add contains() hit-test, ClientCfg.NewDecalSystem toggle, conditional legacy rendering

Merge branch 'core4' of https://github.com/ryzom/ryzomcore into copilot/integrate-nel-3d-decals

Fix ambiguous symbol: rename legacy CVertexProgramDecalAttenuation to CLegacyVertexProgramDecalAttenuation

Fix blank polygon rendering: add initUnlit(), set texture on stage 1, use per-decal material in flush

Fix texture rendering: remove VP double V-flip, unify CPU/VP UV generation via WorldToUV matrix

Fix batching efficiency: always CPU-precompute UVs/colors, batch by texture pointer not per-decal VP

Fix landscape vertex coordinate space: shadow poly receiver stores world-space vertices, use CVector::Null vertDelta since we render with Identity model matrix

Fix decal texture rendering: route stage 1 UV to TexCoord0 via setUVRouting(1, 0)

Fix texture rendering: use GPU tex coord generation matching legacy non-VP path

Commits on Feb 18, 2026

Merge branch 'core4' into copilot/integrate-nel-3d-decals

Fix texture rendering: use CPU-precomputed UVs in VB instead of broken TexCoordGen approach

Fix batch material tracking: use batchMat pointer instead of index arithmetic