Improve modern layout and viewport rendering

crates/obscura-js/src/lib.rs

@@ -14,4 +14,4 @@ pub use v8_flags::set_v8_flags;
 // Screenshot rasterization (PNG bytes) from the render layer. Available when the
 // render feature (which enables obscura-render/paint) is compiled in.
 #[cfg(feature = "render")]
-pub use obscura_render::screenshot_png;
+pub use obscura_render::{screenshot_png, screenshot_png_scrolled};