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Bug 1057212 - Avoid copying all the tiles when doing PushGroupAndCopyBackground. r=Bas

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This commit is contained in:
Matt Woodrow 2014-09-01 15:23:40 +12:00
parent f2fcefda71
commit 2999f08ed4
4 changed files with 69 additions and 50 deletions
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46
gfx/2d/DrawTargetTiled.cpp
View File

@ -45,52 +45,6 @@ DrawTargetTiled::Init(const TileSet& aTiles)
return true;
}
class SnapshotTiled : public SourceSurface
{
public:
SnapshotTiled(const vector<TileInternal>& aTiles, const IntRect& aRect)
: mRect(aRect)
{
for (size_t i = 0; i < aTiles.size(); i++) {
mSnapshots.push_back(aTiles[i].mDrawTarget->Snapshot());
mOrigins.push_back(aTiles[i].mTileOrigin);
}
}
virtual SurfaceType GetType() const { return SurfaceType::TILED; }
virtual IntSize GetSize() const { return IntSize(mRect.XMost(), mRect.YMost()); }
virtual SurfaceFormat GetFormat() const { return mSnapshots[0]->GetFormat(); }
virtual TemporaryRef<DataSourceSurface> GetDataSurface()
{
RefPtr<DataSourceSurface> surf = Factory::CreateDataSourceSurface(GetSize(), GetFormat());
if (MOZ2D_WARN_IF(!surf)) {
return nullptr;
}
DataSourceSurface::MappedSurface mappedSurf;
surf->Map(DataSourceSurface::MapType::WRITE, &mappedSurf);
{
RefPtr<DrawTarget> dt =
Factory::CreateDrawTargetForData(BackendType::CAIRO, mappedSurf.mData,
GetSize(), mappedSurf.mStride, GetFormat());
for (size_t i = 0; i < mSnapshots.size(); i++) {
RefPtr<DataSourceSurface> dataSurf = mSnapshots[i]->GetDataSurface();
dt->CopySurface(dataSurf, IntRect(IntPoint(0, 0), mSnapshots[i]->GetSize()), mOrigins[i]);
}
}
surf->Unmap();
return surf.forget();
}
private:
vector<RefPtr<SourceSurface>> mSnapshots;
vector<IntPoint> mOrigins;
IntRect mRect;
};
TemporaryRef<SourceSurface>
DrawTargetTiled::Snapshot()
{

43
gfx/2d/DrawTargetTiled.h
View File

@ -149,6 +149,49 @@ private:
IntRect mRect;
};
class SnapshotTiled : public SourceSurface
{
public:
SnapshotTiled(const std::vector<TileInternal>& aTiles, const IntRect& aRect)
: mRect(aRect)
{
for (size_t i = 0; i < aTiles.size(); i++) {
mSnapshots.push_back(aTiles[i].mDrawTarget->Snapshot());
mOrigins.push_back(aTiles[i].mTileOrigin);
}
}
virtual SurfaceType GetType() const { return SurfaceType::TILED; }
virtual IntSize GetSize() const { return IntSize(mRect.XMost(), mRect.YMost()); }
virtual SurfaceFormat GetFormat() const { return mSnapshots[0]->GetFormat(); }
virtual TemporaryRef<DataSourceSurface> GetDataSurface()
{
RefPtr<DataSourceSurface> surf = Factory::CreateDataSourceSurface(GetSize(), GetFormat());
DataSourceSurface::MappedSurface mappedSurf;
surf->Map(DataSourceSurface::MapType::WRITE, &mappedSurf);
{
RefPtr<DrawTarget> dt =
Factory::CreateDrawTargetForData(BackendType::CAIRO, mappedSurf.mData,
GetSize(), mappedSurf.mStride, GetFormat());
for (size_t i = 0; i < mSnapshots.size(); i++) {
RefPtr<DataSourceSurface> dataSurf = mSnapshots[i]->GetDataSurface();
dt->CopySurface(dataSurf, IntRect(IntPoint(0, 0), mSnapshots[i]->GetSize()), mOrigins[i]);
}
}
surf->Unmap();
return surf.forget();
}
std::vector<RefPtr<SourceSurface>> mSnapshots;
std::vector<IntPoint> mOrigins;
IntRect mRect;
};
}
}

1
gfx/2d/moz.build
View File

@ -21,6 +21,7 @@ EXPORTS.mozilla.gfx += [
'BorrowedContext.h',
'Coord.h',
'DataSurfaceHelpers.h',
'DrawTargetTiled.h',
'Filters.h',
'Helpers.h',
'Logging.h',

27
gfx/thebes/gfxContext.cpp
View File

@ -24,6 +24,7 @@
#include "GeckoProfiler.h"
#include "gfx2DGlue.h"
#include "mozilla/gfx/PathHelpers.h"
#include "mozilla/gfx/DrawTargetTiled.h"
#include <algorithm>
#if CAIRO_HAS_DWRITE_FONT
@ -1118,12 +1119,32 @@ gfxContext::PushGroupAndCopyBackground(gfxContentType content)
Point offset = CurrentState().deviceOffset - oldDeviceOffset;
Rect surfRect(0, 0, Float(mDT->GetSize().width), Float(mDT->GetSize().height));
Rect sourceRect = surfRect;
sourceRect.x += offset.x;
sourceRect.y += offset.y;
Rect sourceRect = surfRect + offset;
mDT->SetTransform(Matrix());
// XXX: It's really sad that we have to do this (for performance).
// Once DrawTarget gets a PushLayer API we can implement this within
// DrawTargetTiled.
if (source->GetType() == SurfaceType::TILED) {
SnapshotTiled *sourceTiled = static_cast<SnapshotTiled*>(source.get());
for (uint32_t i = 0; i < sourceTiled->mSnapshots.size(); i++) {
Rect tileSourceRect = sourceRect.Intersect(Rect(sourceTiled->mOrigins[i].x,
sourceTiled->mOrigins[i].y,
sourceTiled->mSnapshots[i]->GetSize().width,
sourceTiled->mSnapshots[i]->GetSize().height));
if (tileSourceRect.IsEmpty()) {
continue;
}
Rect tileDestRect = tileSourceRect - offset;
tileSourceRect -= sourceTiled->mOrigins[i];
mDT->DrawSurface(sourceTiled->mSnapshots[i], tileDestRect, tileSourceRect);
}
} else {
mDT->DrawSurface(source, surfRect, sourceRect);
}
mDT->SetOpaqueRect(oldDT->GetOpaqueRect());
PushClipsToDT(mDT);