Properly sending skia-canvas' buffer to other windowing program

[ajitid]

Warning: Just thought that it is important to mention that the SVG file using in the repro contains anime and can be potentially NSFW. This ticket is not a troll, and the image is taken from an example in another library that performs the same function as skia-canvas.

When I resize my SDL window it reduces FPS a lot when SVG is loaded. Haven't check if this applies to other image formats as well.

To reproduce:

1. Clone this repository
2. Install dependencies using bun install
3. Run the program using bun run main.ts

When the window opens, I see ~40 FPS. When extend the size of the window, it reduces to ~24 FPS. I tried with @napi-rs/canvas as well, and with that library I'm always getting ~60 FPS.

If you want to compare, I have also created a branch which runs same code in @napi-rs/canvas which you can find here.

I tried skia-canvas' own Window, and I'm getting ~60FPS there. But I'm not able to figure out how to draw exactly as in the examples above where the things I'm draw don't scale when window is resized.

I'm not sure if something like this is at play here.