Render Text Mask

Renders a design as a two-tone text mask: black type on a white ground, with every image and fill painted out but kept in place so nothing shifts. It uses the real layout, fonts and type sizes, then measures where the type lands and returns that as a coverage grid and a plain sentence about which parts of the frame the text fills.

It is for making a background image for a layout. Passed to an image generator as a reference, with the sentence in the prompt, the mask lets the generator compose around the text instead of behind it. It can also be inverted to white type on black.

It saves the mask as a PNG, and the render costs the same as one still render. It currently runs only inside Syvon, because the render goes through Syvon's own still renderer.