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Bug 1231888 - Remove AutoCairoPixmanBugWorkaround. r=jrmuizel.

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This commit is contained in:
Nicholas Nethercote 2016-01-11 16:11:57 -08:00
parent 4f2906ffbb
commit e31c9366c0
1 changed files with 0 additions and 91 deletions
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91
gfx/thebes/gfxUtils.cpp
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@ -391,12 +391,6 @@ gfxUtils::ConvertBGRAtoRGBA(uint8_t* aData, uint32_t aLength)
}
}
static bool
IsSafeImageTransformComponent(gfxFloat aValue)
{
return aValue >= -32768 && aValue <= 32767;
}
#if !defined(MOZ_GFX_OPTIMIZE_MOBILE)
/**
* This returns the fastest operator to use for solid surfaces which have no
@ -468,83 +462,6 @@ CreateSamplingRestrictedDrawable(gfxDrawable* aDrawable,
}
#endif // !MOZ_GFX_OPTIMIZE_MOBILE
// working around cairo/pixman bug (bug 364968)
// Our device-space-to-image-space transform may not be acceptable to pixman.
struct MOZ_STACK_CLASS AutoCairoPixmanBugWorkaround
{
AutoCairoPixmanBugWorkaround(gfxContext* aContext,
const gfxMatrix& aDeviceSpaceToImageSpace,
const gfxRect& aFill,
const gfxASurface* aSurface)
: mContext(aContext), mSucceeded(true), mPushedGroup(false)
{
// Quartz's limits for matrix are much larger than pixman
if (!aSurface || aSurface->GetType() == gfxSurfaceType::Quartz)
return;
if (!IsSafeImageTransformComponent(aDeviceSpaceToImageSpace._11) ||
!IsSafeImageTransformComponent(aDeviceSpaceToImageSpace._21) ||
!IsSafeImageTransformComponent(aDeviceSpaceToImageSpace._12) ||
!IsSafeImageTransformComponent(aDeviceSpaceToImageSpace._22)) {
NS_WARNING("Scaling up too much, bailing out");
mSucceeded = false;
return;
}
if (IsSafeImageTransformComponent(aDeviceSpaceToImageSpace._31) &&
IsSafeImageTransformComponent(aDeviceSpaceToImageSpace._32))
return;
// We'll push a group, which will hopefully reduce our transform's
// translation so it's in bounds.
gfxMatrix currentMatrix = mContext->CurrentMatrix();
mContext->Save();
// Clip the rounded-out-to-device-pixels bounds of the
// transformed fill area. This is the area for the group we
// want to push.
mContext->SetMatrix(gfxMatrix());
gfxRect bounds = currentMatrix.TransformBounds(aFill);
bounds.RoundOut();
mContext->Clip(bounds);
mContext->SetMatrix(currentMatrix);
mContext->PushGroupForBlendBack(gfxContentType::COLOR_ALPHA);
mContext->SetOp(CompositionOp::OP_OVER);
mPushedGroup = true;
}
~AutoCairoPixmanBugWorkaround()
{
if (mPushedGroup) {
mContext->PopGroupAndBlend();
mContext->Restore();
}
}
bool PushedGroup() { return mPushedGroup; }
bool Succeeded() { return mSucceeded; }
private:
gfxContext* mContext;
bool mSucceeded;
bool mPushedGroup;
};
static gfxMatrix
DeviceToImageTransform(gfxContext* aContext)
{
gfxFloat deviceX, deviceY;
RefPtr<gfxASurface> currentTarget =
aContext->CurrentSurface(&deviceX, &deviceY);
gfxMatrix deviceToUser = aContext->CurrentMatrix();
if (!deviceToUser.Invert()) {
return gfxMatrix(0, 0, 0, 0, 0, 0); // singular
}
deviceToUser.Translate(-gfxPoint(-deviceX, -deviceY));
return deviceToUser;
}
/* These heuristics are based on Source/WebCore/platform/graphics/skia/ImageSkia.cpp:computeResamplingMode() */
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
static Filter ReduceResamplingFilter(Filter aFilter,
@ -724,14 +641,6 @@ gfxUtils::DrawPixelSnapped(gfxContext* aContext,
gfxRect region(aRegion.Rect());
ExtendMode extendMode = aRegion.GetExtendMode();
RefPtr<gfxASurface> currentTarget = aContext->CurrentSurface();
gfxMatrix deviceSpaceToImageSpace = DeviceToImageTransform(aContext);
AutoCairoPixmanBugWorkaround workaround(aContext, deviceSpaceToImageSpace,
region, currentTarget);
if (!workaround.Succeeded())
return;
RefPtr<gfxDrawable> drawable = aDrawable;
aFilter = ReduceResamplingFilter(aFilter,