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jaap-janandClaude Opus 5
52596aac76
The terminal renders nothing on Linux, and does it in the most misleading way available: the page loads, the scripts run, the renderer connects, InvokeScript answers. Everything works except the pixels, so it reads as a broken terminal rather than as a host with nowhere to paint. Measured on Fedora 44 with Avalonia.Controls.WebView 12.0.1, by a spike that hosts a NativeWebView and reads AdapterInfo. The backend is WebKitGTK 2.52.5 — not the WPE one this repository's platform notes predicted, and Fedora packages no WPE WebKit at all, so that path was never going to be the answer here. In its default mode the adapter reports SupportedScenarios = NativeDialog: a window of its own, and nothing that can be hosted in place. Identical under X11 and Wayland, so it is the adapter's answer rather than a session problem. Setting ExperimentalOffscreen on the GTK environment arguments changes the same adapter's answer to OffscreenRenderer — the compositor-drawn mode, which is what the NativeWebViewCompositorHost mentioned in those same notes exists to host. MainWindow now sets it as the environment is settled. Windows and macOS are untouched by construction rather than by an OS check: the argument is a GTK type there and the handler does nothing. The platform notes carried this as "unproven, and still the largest risk in the plan". They carry the measurement now, including the part that is still unproven and the reason the spike could not settle it. What is NOT verified is that it now paints. An XWayland root capture is black under a Wayland compositor and RenderTargetBitmap does not capture a compositor surface, so both ways of looking at it from here failed. It needs eyes on a running client, and if the terminal is still blank the next question is whether it takes input at all — that separates "not drawing" from "not hosted". Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>