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Snap the bitmap as it may be changed later

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Bug: skia:
Change-Id: If06510f6fd3b64cce3440a543973c9c83913da10
Reviewed-on: https://skia-review.googlesource.com/120141
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Yuqian Li <liyuqian@google.com>
This commit is contained in:
Yuqian Li 2018-04-12 14:57:05 -04:00 committed by Skia Commit-Bot
parent a16e1b6c00
commit 6b7b1dcc86
2 changed files with 15 additions and 2 deletions
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15
src/core/SkThreadedBMPDevice.cpp
View File

@ -161,6 +161,15 @@ void SkThreadedBMPDevice::drawPath(const SkPath& path, const SkPaint& paint,
}
}
SkBitmap SkThreadedBMPDevice::snapBitmap(const SkBitmap& bitmap) {
// We can't use bitmap.isImmutable() because it could be temporarily immutable
// TODO(liyuqian): use genID to reduce the copy frequency
SkBitmap snap;
snap.allocPixels(bitmap.info());
bitmap.readPixels(snap.pixmap());
return snap;
}
void SkThreadedBMPDevice::drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix,
const SkRect* dstOrNull, const SkPaint& paint) {
SkRect drawBounds;
@ -173,16 +182,18 @@ void SkThreadedBMPDevice::drawBitmap(const SkBitmap& bitmap, const SkMatrix& mat
clonedDstOrNull = fAlloc.make<SkRect>(*dstOrNull);
}
SkBitmap snap = this->snapBitmap(bitmap);
fQueue.push(drawBounds, [=](SkArenaAlloc*, const DrawState& ds, const SkIRect& tileBounds){
TileDraw(ds, tileBounds).drawBitmap(bitmap, matrix, clonedDstOrNull, paint);
TileDraw(ds, tileBounds).drawBitmap(snap, matrix, clonedDstOrNull, paint);
});
}
void SkThreadedBMPDevice::drawSprite(const SkBitmap& bitmap, int x, int y, const SkPaint& paint) {
SkRect drawBounds = SkRect::MakeXYWH(x, y, bitmap.width(), bitmap.height());
SkBitmap snap = this->snapBitmap(bitmap);
fQueue.push<false>(drawBounds, [=](SkArenaAlloc*, const DrawState& ds,
const SkIRect& tileBounds){
TileDraw(ds, tileBounds).drawSprite(bitmap, x, y, paint);
TileDraw(ds, tileBounds).drawSprite(snap, x, y, paint);
});
}

2
src/core/SkThreadedBMPDevice.h
View File

@ -183,6 +183,8 @@ private:
return clone;
}
SkBitmap snapBitmap(const SkBitmap& bitmap);
const int fTileCnt;
const int fThreadCnt;
SkTArray<SkIRect> fTileBounds;