[CG] Have Canvas use the IOSurfacePool
https://bugs.webkit.org/show_bug.cgi?id=142417
<rdar://problem/20044440>
Reviewed by Darin Adler.
PerformanceTests:
Lower the number of different canvas sizes from 1000 to 100 so that
the test does not require such a huge cache size. With 100, we now
get over 90% cache hit rate with the default IOSurfacePool size.
* Canvas/reuse.html:
Source/WebCore:
Have ImageBufferDataCG use the IOSurfacePool so that Canvas can
benefit from it. I see a ~75% progression on Canvas/reuse.html
performance test on my Macbook Pro with 1000 different canvas
sizes and ~110% progression with 100 different canvas sizes.
I also see a ~65% cache hit rate on the mobile version of
cnn.com.
Note that ImageData calls CGContextClearRect() after calling
IOSurface::create() so recycling IOSurfaces in this case should
be safe.
Performance test: Canvas/reuse.html
* platform/graphics/ImageBuffer.h:
(WebCore::ImageBuffer::baseTransform):
* platform/graphics/cg/ImageBufferCG.cpp:
(WebCore::ImageBuffer::ImageBuffer):
(WebCore::ImageBuffer::context):
(WebCore::ImageBuffer::copyImage):
(WebCore::ImageBuffer::copyNativeImage):
(WebCore::ImageBuffer::draw):
(WebCore::ImageBuffer::clip):
(WebCore::ImageBuffer::putByteArray):
(WebCore::ImageBuffer::toDataURL):
* platform/graphics/cg/ImageBufferDataCG.cpp:
(WebCore::ImageBufferData::~ImageBufferData):
(WebCore::ImageBufferData::getData):
(WebCore::ImageBufferData::putData):
(WebCore::ImageBufferData::ImageBufferData): Deleted.
* platform/graphics/cg/ImageBufferDataCG.h:
* platform/graphics/cocoa/IOSurface.h:
* platform/graphics/cocoa/IOSurface.mm:
(IOSurface::surfaceFromPool):
(IOSurface::create):
(IOSurface::createFromSendRight):
(IOSurface::createFromImage):
(IOSurface::setContextSize):
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@181301 268f45cc-cd09-0410-ab3c-d52691b4dbfc
9 files changed
