29 lines
1.1 KiB
TypeScript
29 lines
1.1 KiB
TypeScript
 
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/**
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* Decides whether the terminal loads `@xterm/addon-webgl`.
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*
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* Split out of `TerminalView` so it can be unit-tested without standing up a
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* terminal, and so the platform rule lives in exactly one place.
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*/
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/** True when the webview is running on Linux (WebKitGTK), excluding Android. */
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export function isLinuxWebview(userAgent: string): boolean {
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return /\bLinux\b/.test(userAgent) && !/\bAndroid\b/.test(userAgent);
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}
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/**
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* Resolve the effective WebGL setting.
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*
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* `setting` is `AppSettings.terminal_gpu_rendering`: `true`/`false` force the
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* answer, `null`/`undefined` mean auto. Auto is on everywhere except Linux —
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* there the app disables WebKitGTK's DMA-BUF renderer at startup (triple-c#34),
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* which leaves WebGL present but software-rasterised, so loading the addon is
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* slower than the canvas renderer it would otherwise have fallen back to.
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*/
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export function resolveTerminalGpuRendering(
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setting: boolean | null | undefined,
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userAgent: string,
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): boolean {
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if (typeof setting === "boolean") return setting;
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return !isLinuxWebview(userAgent);
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}
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