bool SkRasterClip::op(const SkPath& path, const SkISize& size, SkRegion::Op op, bool doAA) {
// base is used to limit the size (and therefore memory allocation) of the
// region that results from scan converting devPath.
SkRegion base;
if (SkRegion::kIntersect_Op == op) {
// since we are intersect, we can do better (tighter) with currRgn's
// bounds, than just using the device. However, if currRgn is complex,
// our region blitter may hork, so we do that case in two steps.
if (this->isRect()) {
// FIXME: we should also be able to do this when this->isBW(),
// but relaxing the test above triggers GM asserts in
// SkRgnBuilder::blitH(). We need to investigate what's going on.
return this->setPath(path, this->bwRgn(), doAA);
} else {
base.setRect(this->getBounds());
SkRasterClip clip;
clip.setPath(path, base, doAA);
return this->op(clip, op);
}
} else {
base.setRect(0, 0, size.width(), size.height());
if (SkRegion::kReplace_Op == op) {
return this->setPath(path, base, doAA);
} else {
SkRasterClip clip;
clip.setPath(path, base, doAA);
return this->op(clip, op);
}
}
}
bool SkRasterClip::op(const SkPath& path, const SkMatrix& matrix, const SkIRect& devBounds,
SkRegion::Op op, bool doAA) {
AUTO_RASTERCLIP_VALIDATE(*this);
SkIRect bounds(devBounds);
this->applyClipRestriction(op, &bounds);
// base is used to limit the size (and therefore memory allocation) of the
// region that results from scan converting devPath.
SkRegion base;
SkPath devPath;
if (matrix.isIdentity()) {
devPath = path;
} else {
path.transform(matrix, &devPath);
devPath.setIsVolatile(true);
}
if (SkRegion::kIntersect_Op == op) {
// since we are intersect, we can do better (tighter) with currRgn's
// bounds, than just using the device. However, if currRgn is complex,
// our region blitter may hork, so we do that case in two steps.
if (this->isRect()) {
// FIXME: we should also be able to do this when this->isBW(),
// but relaxing the test above triggers GM asserts in
// SkRgnBuilder::blitH(). We need to investigate what's going on.
return this->setPath(devPath, this->bwRgn(), doAA);
} else {
base.setRect(this->getBounds());
SkRasterClip clip;
clip.setPath(devPath, base, doAA);
return this->op(clip, op);
}
} else {
base.setRect(bounds);
if (SkRegion::kReplace_Op == op) {
return this->setPath(devPath, base, doAA);
} else {
SkRasterClip clip;
clip.setPath(devPath, base, doAA);
return this->op(clip, op);
}
}
}
