Transparent Background For Extension With A Second Canvas

[PURPL3-CAT]

I'm currently making an extension that adds BabylonJS to TurboWarp. It works by adding another canvas behind the stage and rendering to that. The background is opaque, and I have to use a custom build of scratch-render. My extension works fine on my local build, but I want to move to using regular TurboWarp (especially if I share it, which I plan to do if I can). If anyone knows a solution (push to the actual scratch-render repo, overwrite the render code from the extension, etc..), that would be very helpful!

[yuri-kiss]

yo this looks super cool.

[PURPL3-CAT]

Thanks!

[BlueDome77]

There is a block in Canvas Effects that allows you to set the transparency of the stage. (Only the stage, sadly) Link to the PR: #747

[PURPL3-CAT]

Ok thats too bad. Thanks anyway!

[PURPL3-CAT]

Update: the only way is if the WebGL context is created with alpha: true. I'll look for other solutions such as rendering the second canvas as a sprite on the main canvas.