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Bug 1294337 - add DrawSurface fast path for DrawTargetSkia::FillRect. r=mchang

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MozReview-Commit-ID: LSEvJKmKi2n
This commit is contained in:
Lee Salzman 2016-08-23 13:36:45 -04:00
parent c2bdf6f2ff
commit 0519f8e461
1 changed files with 32 additions and 0 deletions
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32
gfx/2d/DrawTargetSkia.cpp
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@ -615,6 +615,38 @@ DrawTargetSkia::FillRect(const Rect &aRect,
const Pattern &aPattern,
const DrawOptions &aOptions)
{
// The sprite blitting path in Skia can be faster than the shader blitter for
// operators other than source (or source-over with opaque surface). So, when
// possible/beneficial, route to DrawSurface which will use the sprite blitter.
if (aPattern.GetType() == PatternType::SURFACE &&
aOptions.mCompositionOp != CompositionOp::OP_SOURCE) {
const SurfacePattern& pat = static_cast<const SurfacePattern&>(aPattern);
// Verify there is a valid surface and a pattern matrix without skew.
if (pat.mSurface &&
(aOptions.mCompositionOp != CompositionOp::OP_OVER ||
GfxFormatToSkiaAlphaType(pat.mSurface->GetFormat()) != kOpaque_SkAlphaType) &&
!pat.mMatrix.HasNonAxisAlignedTransform()) {
// Bound the sampling to smaller of the bounds or the sampling rect.
IntRect srcRect(IntPoint(0, 0), pat.mSurface->GetSize());
if (!pat.mSamplingRect.IsEmpty()) {
srcRect = srcRect.Intersect(pat.mSamplingRect);
}
// Transform the destination rectangle by the inverse of the pattern
// matrix so that it is in pattern space like the source rectangle.
Rect patRect = aRect - pat.mMatrix.GetTranslation();
patRect.Scale(1.0f / pat.mMatrix._11, 1.0f / pat.mMatrix._22);
// Verify the pattern rectangle will not tile or clamp.
if (!patRect.IsEmpty() && srcRect.Contains(RoundedOut(patRect))) {
// The pattern is a surface with an axis-aligned source rectangle
// fitting entirely in its bounds, so just treat it as a DrawSurface.
DrawSurface(pat.mSurface, aRect, patRect,
DrawSurfaceOptions(pat.mSamplingFilter),
aOptions);
return;
}
}
}
MarkChanged();
SkRect rect = RectToSkRect(aRect);
AutoPaintSetup paint(mCanvas.get(), aOptions, aPattern, &aRect);