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Render: decode print-size rasters, and say when an image is missing from an export

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The renderer decoded images with the decoder's default 512 MB allocation
limit, so a 300 ppi roll (6614 x 59055 px, 1.56 GB as RGBA) that opens and
exports to PDF fine drew nothing in a raster export - a fully transparent PNG,
exit code 0, no warning. It now decodes with the allowance opening has (2 GB,
512 MB on the web), shrinks an image past a pixmap's 65535 px side to fit
instead of dropping it, and counts any image it still can't decode: a raster
export that drew fewer images than it should says so in its warnings.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
fastmikey99
2026-10-13 05:20:57 +07:00
committed by bflatastic
co-authored by Claude Opus 5.5
parent e01b9a20d9
commit d084af162f
4 changed files with 66 additions and 3 deletions
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crates/engine/src/cmd/fileio/encode.rs
+6
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@@ -382,7 +382,13 @@ pub fn encode_all(doc: &Document, format: &str, p: &Value) -> Result<Encoded> {
/// [`encode_all`] of `doc` as it is.
fn encode_all_of(doc: &Document, format: &str, p: &Value) -> Result<Encoded> {
let f = super::writable(C, Some(format), None)?;
let failed = vectorcraft_render::decode_failures();
let mut enc = encode_files(doc, f, p)?;
// An image the renderer couldn't decode draws nothing: say so rather than write a picture
// that silently lacks it.
if f.raster && vectorcraft_render::decode_failures() > failed {
enc.warnings.push("an image couldn't be decoded and is missing from the picture".into());
}
// Formats that draw type: missing fonts come out in the fallback font (PDF and SVG say so
// themselves: SVG only when it outlines or embeds fonts).
if (f.raster || matches!(f.id, "eps" | "emf" | "wmf"))