x11.wasm

Browser-oriented X11/Xlib compatibility layer for WASM applications.

Display model

The browser backend intentionally exposes a small X11 display model:

• one display with one screen (DefaultScreen == 0, ScreenCount == 1);
• one 24-bit TrueColor default visual (visualid == 1, RGB masks 0xff0000, 0x00ff00, and 0x0000ff, bits_per_rgb == 8);
• one window depth (24) plus pixmap formats for depth 1 bitmap pixmaps and depth 24 pixmaps stored as 32 bpp canvas data;
• colormaps are valid only for the default visual.

Unsupported screens, depths, visual classes, and non-default visuals are reported as missing by visual/depth queries and rejected by window or colormap creation with BadMatch. Adding multiple screens, other depths, PseudoColor, or alternate visuals should update the runtime harness expectations at the same time.

License

This project is released under the MIT License.

Some X11 public header code depends on the original license.