Use Compose WebGL render targets - #1114
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Fix `WebGLRenderTarget` rendering after its size changes. `Image.adoptTextureFrom` transfers ownership of the WebGL texture to Skia, so closing the old image deletes that texture. The previous resize path then tried to allocate storage on the deleted texture, which left the framebuffer incomplete. This change creates a texture for each size generation and releases the previous texture through one path after notifying borrowers. PR #3323 and its Skiko update are now on `jb-main`. This PR is the focused resize follow-up. ## Testing In this repo: - `./gradlew :compose:ui:ui:jsBrowserTest --no-daemon --no-configuration-cache` - `./gradlew :mpp:publishComposeJbToMavenLocal -Pcompose.platforms=web -Pjetbrains.publication.libraries=COMPOSE --no-daemon --no-configuration-cache` In maplibre/maplibre-compose#1114: - MapLibre Compose demo startup and resize in Chromium, Safari, and Firefox. - MapLibre Compose JS browser suite: 204 tests, no failures or skips. ## Release Notes N/A
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The mutable 1.12.10-alpha01+snapshot.default pin can be replaced: JetBrains now publishes +dev4710, which includes WebGLRenderTarget from Compose #3323 and the resize fix from #3344. Co-authored-by: github.boned427 <github.boned427@passmail.net>
The 1.12.10-alpha01+dev4710 iOS metadata still links against Xcode_26.2_Universal.app, which is not installed on the macos-26 runner. Co-authored-by: github.boned427 <github.boned427@passmail.net>
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Description
Uses Compose UI's
WebGLRenderTargetinstead of the browser Skiko/Emscripten bridge. MapLibre keeps framebuffer sizing, repaint scheduling, and sampler cleanup; Compose owns the target and restores its graphics state.The pinned Compose
1.12.10-alpha01+dev4710build includes the required API and resize fix. Its Skiko 0.152.0-alpha02 runtime also requires the desktop host to read GPU contexts from backend redrawers. The Windows host verifies its native device offsets against that version (resolves #1312).The branch is updated for current main's initialization, logging, test fixtures, and CI tiers. GPU tests exercise MapLibre's framebuffer behavior without retaining a test-only copy of the removed texture bridge. The shared-image composition test now initializes a Compose graphics host.
Validation
mise run test:js,mise run test:desktopon macOS, andmise run checkpass. The browser compile used a local 6 GB Kotlin daemon heap and reduced build concurrency after exhausting the default 2 GB heap. The desktop suite reports seven skipped tests. The JS demo renders through shrinking and growing Chromium viewports without page errors.CI is pending on the updated head. Full platform coverage is requested because the revised Skiko native device layout and redrawer integration affect Windows ARM64 and Linux ARM64 as well as the default desktop variants.
Release dependency
Remains a draft for a future release. The Compose development build includes upstream #3323 and #3344; the release gate remains a non-prerelease Compose version containing the required APIs. Kotlin/Wasm support is stacked in #1081.
AI assistance
OpenAI Codex (GPT-6) implemented, rebased, reviewed, and validated the change under human direction.