diff options
Diffstat (limited to 'libs/hwui/pipeline/skia/LayerDrawable.cpp')
| -rw-r--r-- | libs/hwui/pipeline/skia/LayerDrawable.cpp | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/libs/hwui/pipeline/skia/LayerDrawable.cpp b/libs/hwui/pipeline/skia/LayerDrawable.cpp index 3ca0f8139c02..13d2dae8e281 100644 --- a/libs/hwui/pipeline/skia/LayerDrawable.cpp +++ b/libs/hwui/pipeline/skia/LayerDrawable.cpp @@ -71,15 +71,12 @@ bool LayerDrawable::DrawLayer(GrContext* context, SkCanvas* canvas, Layer* layer paint.setAlpha(layer->getAlpha()); paint.setBlendMode(layer->getMode()); paint.setColorFilter(layer->getColorSpaceWithFilter()); - if (layer->getForceFilter()) { - paint.setFilterQuality(kLow_SkFilterQuality); - } - const bool nonIdentityMatrix = !matrix.isIdentity(); if (nonIdentityMatrix) { canvas->save(); canvas->concat(matrix); } + const SkMatrix& totalMatrix = canvas->getTotalMatrix(); if (dstRect || srcRect) { SkMatrix matrixInv; if (!matrix.invert(&matrixInv)) { @@ -99,9 +96,28 @@ bool LayerDrawable::DrawLayer(GrContext* context, SkCanvas* canvas, Layer* layer skiaDestRect = SkRect::MakeIWH(layerWidth, layerHeight); } matrixInv.mapRect(&skiaDestRect); + // If (matrix is identity or an integer translation) and (src/dst buffers size match), + // then use nearest neighbor, otherwise use bilerp sampling. + // Integer translation is defined as when src rect and dst rect align fractionally. + // Skia TextureOp has the above logic build-in, but not NonAAFillRectOp. TextureOp works + // only for SrcOver blending and without color filter (readback uses Src blending). + bool isIntegerTranslate = totalMatrix.isTranslate() + && SkScalarFraction(skiaDestRect.fLeft + totalMatrix[SkMatrix::kMTransX]) + == SkScalarFraction(skiaSrcRect.fLeft) + && SkScalarFraction(skiaDestRect.fTop + totalMatrix[SkMatrix::kMTransY]) + == SkScalarFraction(skiaSrcRect.fTop); + if (layer->getForceFilter() || !isIntegerTranslate) { + paint.setFilterQuality(kLow_SkFilterQuality); + } canvas->drawImageRect(layerImage.get(), skiaSrcRect, skiaDestRect, &paint, SkCanvas::kFast_SrcRectConstraint); } else { + bool isIntegerTranslate = totalMatrix.isTranslate() + && SkScalarIsInt(totalMatrix[SkMatrix::kMTransX]) + && SkScalarIsInt(totalMatrix[SkMatrix::kMTransY]); + if (layer->getForceFilter() || !isIntegerTranslate) { + paint.setFilterQuality(kLow_SkFilterQuality); + } canvas->drawImage(layerImage.get(), 0, 0, &paint); } // restore the original matrix |