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feat(weave/android): hand the v4 2D overlay to the DP (2D under the lens) - #1845
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…ens) This is the Android twin of the Linux caller in 94fc022. Before the self-submit split, the weave now offers the browser's window-sized 2D overlay to the DP's Vulkan set_overlay_2d slot, together with the v15 filter strength. It moves the overlay barrier ahead of the split, so a self-submitting DP (Leia CNSDK) can sample the layer during process_atlas. When the DP accepts, the post-weave premultiplied-over blend is skipped. When it declines, or the slot is absent, behaviour is unchanged. The layer is offered only when it is exactly the process_atlas target size. The satellite physical-rect and v6 N-view targets are not. The XR_DXR_weave v14/v15 hints (layer unchanged, filter strength) were already on the wire. Until now they were dropped on Android; they are now forwarded through the new comp_multi_weave_android_set_overlay_hints. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Builds on #1835 (per-submit overlay, XR_DXR_weave v18), now on main.
Why
On Android the browser's v4 2D overlay is blended after the weave, so 2D text aliases and shimmers per eye wherever the lens is on. The Leia CNSDK display processor can now band-limit the layer to the lens and composite it inside the weave (LeiaInc/CNSDK#746, CNSDK v0.10.75). This is the Android twin of the Linux caller in 94fc022.
What
comp_multi_weave_android.coffers the overlay to the DP's Vulkanset_overlay_2dslot (with the v15 filter strength) before the self-submit split. A self-submitting DP (CNSDK) samples the layer insideprocess_atlas, so the overlay barrier has to come before that point.overlay_this_submit, fix(weave/android): the overlay is per submit, and an unreadable one refuses (XR_DXR_weave v18) #1835);process_atlastarget size. The satellite physical-rect and v6 N-view targets are not.comp_multi_weave_android_set_overlay_hints. CNSDK's cached prefilter reuses its caches on v14 "unchanged" frames.Verified on the NP02J
Setup: runtime built from this branch, leia-plugin
feat/android-overlay-2d, CNSDK device-service 0.10.74-746 build.Weave wall time per frame, 300-frame averages, whole-page mode:
Release coupling
Shipping this together needs:
CNSDK_TAGmoved to v0.10.75;versions.jsonleia_pluginpinned to the plug-in release that implements the slot (leia-pluginfeat/android-overlay-2d, CNSDK v0.10.75).Those bumps belong in the release PR, after the plug-in release exists.
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