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Bug 945655 - Reduce arithmetic combine filter output rect depending on the coefficients. r=roc

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This commit is contained in:
Markus Stange 2013-12-10 14:50:41 +01:00
parent bbfebead46
commit 66065bfa75
1 changed files with 16 additions and 2 deletions
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18
gfx/2d/FilterNodeSoftware.cpp
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@ -2571,8 +2571,22 @@ FilterNodeArithmeticCombineSoftware::RequestFromInputsForRect(const IntRect &aRe
IntRect
FilterNodeArithmeticCombineSoftware::GetOutputRectInRect(const IntRect& aRect)
{
return GetInputRectInRect(IN_ARITHMETIC_COMBINE_IN, aRect).Union(
GetInputRectInRect(IN_ARITHMETIC_COMBINE_IN2, aRect)).Intersect(aRect);
if (mK4 > 0.0f) {
return aRect;
}
IntRect rectFrom1 = GetInputRectInRect(IN_ARITHMETIC_COMBINE_IN, aRect).Intersect(aRect);
IntRect rectFrom2 = GetInputRectInRect(IN_ARITHMETIC_COMBINE_IN2, aRect).Intersect(aRect);
IntRect result;
if (mK1 > 0.0f) {
result = rectFrom1.Intersect(rectFrom2);
}
if (mK2 > 0.0f) {
result = result.Union(rectFrom1);
}
if (mK3 > 0.0f) {
result = result.Union(rectFrom2);
}
return result;
}
FilterNodeCompositeSoftware::FilterNodeCompositeSoftware()