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Fix transform stack bugs in color glyph loader

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This commit is contained in:
Chad Brokaw 2022-05-11 14:39:09 -04:00
parent 6f9e53459a
commit 3afe2eaac2
1 changed files with 9 additions and 6 deletions
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15
piet-scene/src/glyph/mod.rs
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@ -107,7 +107,12 @@ impl<'a> GlyphProvider<'a> {
for command in glyph.commands() {
match command {
Command::PushTransform(xform) => {
xform_stack.push(convert_transform(xform));
let xform = if let Some(parent) = xform_stack.last() {
convert_transform(xform) * *parent
} else {
convert_transform(xform)
};
xform_stack.push(xform);
}
Command::PopTransform => { xform_stack.pop(); },
Command::PushClip(path_index) => {
@ -128,8 +133,7 @@ impl<'a> GlyphProvider<'a> {
max: Point::new(bounds.max.x, bounds.max.y),
};
if let Some(xform) = xform_stack.last() {
rect.min = rect.min.transform(xform);
rect.max = rect.max.transform(xform);
rect = rect.transform(xform);
}
builder.push_layer(Default::default(), rect.elements());
}
@ -140,8 +144,7 @@ impl<'a> GlyphProvider<'a> {
max: Point::new(bounds.max.x, bounds.max.y),
};
if let Some(xform) = xform_stack.last() {
rect.min = rect.min.transform(xform);
rect.max = rect.max.transform(xform);
rect = rect.transform(xform);
}
builder.push_layer(convert_blend(*mode), rect.elements())
}
@ -154,7 +157,7 @@ impl<'a> GlyphProvider<'a> {
builder.fill(
Fill::NonZero,
&brush,
brush_xform,
brush_xform.map(|x| x * *xform),
convert_transformed_path(path.elements(), xform),
);
} else {