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Bug 722164 - Set Azure Quartz Canvas image interpolation to low for better performance. r=jmuizelaar

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Benoit Girard 2012-01-29 17:08:58 -05:00
parent 3984ed0152
commit 33ac1e18fe
1 changed files with 8 additions and 0 deletions
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8
gfx/2d/DrawTargetCG.cpp
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@ -865,6 +865,14 @@ DrawTargetCG::Init(const IntSize &aSize, SurfaceFormat &)
// so flip it to the top left
CGContextTranslateCTM(mCg, 0, mSize.height);
CGContextScaleCTM(mCg, 1, -1);
// See Bug 722164 for performance details
// Medium or higher quality lead to expensive interpolation
// for canvas we want to use low quality interpolation
// to have competitive performance with other canvas
// implementation.
// XXX: Create input parameter to control interpolation and
// use the default for content.
CGContextSetInterpolationQuality(mCg, kCGInterpolationLow);
//XXX: set correct format
mFormat = FORMAT_B8G8R8A8;