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Prevent terminal loading flash #5432

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juliusmarminge merged 1 commit into from
Aug 5, 2026
+5 −0
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Prevent terminal loading flash #5432

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5 changes: 5 additions & 0 deletions apps/web/src/terminal/ghostty/surface.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -642,6 +642,11 @@ export class GhosttyTerminalSurface {

const context = canvas.getContext("2d", { alpha: false });
if (!context) throw new Error("Canvas 2D is unavailable");
// An opaque canvas backing store initializes to solid black, and the font
// and WASM loads below leave it on screen for the whole setup window; paint
// the theme background first so the mount never flashes a black box.
context.fillStyle = `rgb(${options.theme.background.r}, ${options.theme.background.g}, ${options.theme.background.b})`;
context.fillRect(0, 0, canvas.width, canvas.height);
const fontSize = terminalFontSize(options.font?.size);
try {
// Cell metrics must come from the faces that will render; measuring before
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