Open a Cocoa window
Create, update, present, and destroy windows from Ruby.
Native macOS · Cocoa · Metal
A native window, from Ruby.
A Ruby C extension for macOS windows, pixel presentation, event polling, and Metal compute.
gem install metaco
A focused bridge to the host.
Create a native window, push RGBA pixels, receive input, or run Metal compute.
Handle events
Poll keyboard and mouse data in the application loop.
Use Metal compute
Check support, compile MSL, and dispatch compute work.
A small first step
Start with one example.
Install the gem, then follow the project guide for platform requirements and the full API.
require "metaco"
Metaco.init
handle = Metaco.window_create(
800, 600, "My Window",
resizable: true, high_dpi: true
)
begin
# rgba_bytes contains width * height RGBA pixels.
Metaco.set_pixels(handle, rgba_bytes, 800, 600)
Metaco.present(handle)
ensure
Metaco.window_destroy(handle)
end