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renderer: fix render region for multiple masks

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Previously, when more than two masks were applied,
the render region only took the first added mask into
account.

@Issue: https://github.com/thorvg/thorvg/issues/3600
This commit is contained in:
Mira Grudzinska 2025-07-08 10:43:49 +02:00 • committed by Hermet Park
parent 761259ca59
commit 7bb701b22e
1 changed files with 6 additions and 2 deletions
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8
src/renderer/tvgPaint.cpp
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@ -184,8 +184,12 @@ bool Paint::Impl::render(RenderMethod* renderer)
RenderRegion region;
PAINT_METHOD(region, bounds(renderer));
if (MASK_REGION_MERGING(maskData->method)) region.add(PAINT(maskData->target)->bounds(renderer));
if (region.invalid()) return true;
auto mData = maskData;
while (mData) {
if (MASK_REGION_MERGING(mData->method)) region.add(PAINT(mData->target)->bounds(renderer));
if (region.invalid()) return true;
mData = PAINT(mData->target)->maskData;
}
cmp = renderer->target(region, MASK_TO_COLORSPACE(renderer, maskData->method), CompositionFlag::Masking);
if (renderer->beginComposite(cmp, MaskMethod::None, 255)) {
maskData->target->pImpl->render(renderer);