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Revert "Revert "Make GrTextureOp disable coverage AA when rect falls on integers.""

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This reverts commit 36be574e7b.

Change-Id: Ifdc06cb617ce5c736f861a715bb6f34791364e57
Reviewed-on: https://skia-review.googlesource.com/130507
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
This commit is contained in:
Brian Salomon 2018-05-29 12:47:57 -04:00 committed by Skia Commit-Bot
parent 18dbfd05e4
commit 594b64c485
1 changed files with 20 additions and 7 deletions
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27
src/gpu/ops/GrTextureOp.cpp
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@ -709,15 +709,28 @@ __attribute__((no_sanitize("float-cast-overflow")))
, fFinalized(0)
, fAllowSRGBInputs(allowSRGBInputs ? 1 : 0) {
SkASSERT(aaType != GrAAType::kMixedSamples);
const Draw& draw = fDraws.emplace_back(srcRect, 0, GrPerspQuad(dstRect, viewMatrix),
constraint, color);
fPerspective = viewMatrix.hasPerspective();
fDomain = (bool)draw.domain();
SkRect bounds;
bounds = draw.quad().bounds();
auto quad = GrPerspQuad(dstRect, viewMatrix);
auto bounds = quad.bounds();
#ifndef SK_DONT_DROP_UNNECESSARY_AA_IN_TEXTURE_OP
if (GrAAType::kCoverage == this->aaType() && viewMatrix.rectStaysRect()) {
// Disable coverage AA when rect falls on integers in device space.
auto is_int = [](float f) { return f == sk_float_floor(f); };
if (is_int(bounds.fLeft) && is_int(bounds.fTop) && is_int(bounds.fRight) &&
is_int(bounds.fBottom)) {
fAAType = static_cast<unsigned>(GrAAType::kNone);
// We may have had a strict constraint with nearest filter soley due to possible AA
// bloat. In that case it's no longer necessary.
if (constraint == SkCanvas::kStrict_SrcRectConstraint &&
filter == GrSamplerState::Filter::kNearest) {
constraint = SkCanvas::kFast_SrcRectConstraint;
}
}
}
#endif
const auto& draw = fDraws.emplace_back(srcRect, 0, quad, constraint, color);
this->setBounds(bounds, HasAABloat::kNo, IsZeroArea::kNo);
fDomain = static_cast<bool>(draw.domain());
fMaxApproxDstPixelArea = RectSizeAsSizeT(bounds);
}