This reverts commit
d4ed326d6f3704995b0e91292bf2c87e9d36bb14.
Reason for revert: reverting temporarily to get us rolling into Chrome again.
Must be this CL right?
https://storage.googleapis.com/chromium-layout-test-archives/linux_trusty_blink_rel/3364/layout-test-results/results.html
Original change's description:
> Improve quad edges' smoothness in non-AA cases
>
> Previously, non-AA quad edges only have an accuracy about 1/2 pixel
> (while the AA quad edges have an accuracy about 1/8 pixel). Now, we
> increase non-AA quad edges' accuracy to 1/8 pixel as well.
>
> The difference is very significant for rotating non-AA filled circles.
> For example, run `./out/Debug/SampleApp --slide GM:fillcircle` with AA
> turned off (by pressing b).
>
> The benchmark added reveals that increasing quad accuracy from 1/2 to
> 1/8 doesn't affect the performance significantly. The following is the
> 1/2-accuracy performance versus 1/8-accuracy performance:
>
> curr/maxrss loops min median mean max stddev samples
> config bench
> 7/17 MB 19 2.43µs 2.57µs 2.81µs 10.5µs 22% 16119
> 8888 path_fill_big_nonaacircle
> 7/17 MB 17 1.38µs 1.42µs 1.52µs 13µs 20% 21409
> 8888 path_fill_small_nonaacircle
>
> curr/maxrss loops min median mean max stddev samples
> config bench
> 7/17 MB 71 2.52µs 2.59µs 2.79µs 7.67µs 19% 7557
> 8888 path_fill_big_nonaacircle
> 7/17 MB 64 1.45µs 1.49µs 1.51µs 2.39µs 5% 12704
> 8888 path_fill_small_nonaacircle
>
>
> BUG=skia:
>
> Change-Id: I3482098aeafcc6f2ec9aa3382977c0dc1b650964
> Reviewed-on: https://skia-review.googlesource.com/6699
> Reviewed-by: Mike Reed <reed@google.com>
> Commit-Queue: Yuqian Li <liyuqian@google.com>
>
TBR=caryclark@google.com,liyuqian@google.com,reed@google.com,djsollen@google.com,bungeman@google.com,reviews@skia.org,fmalita@chromium.org
BUG=skia:
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Change-Id: I5bc4596ab506f6f61ac2da91a07cf51d61114f31
Reviewed-on: https://skia-review.googlesource.com/6829
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
typedef PathBench INHERITED;
};
-class NonAACirclePathBench: public CirclePathBench {
-public:
- NonAACirclePathBench(Flags flags) : INHERITED(flags) {}
-
- void appendName(SkString* name) override {
- name->append("nonaacircle");
- }
-
- void setupPaint(SkPaint* paint) override {
- CirclePathBench::setupPaint(paint);
- paint->setAntiAlias(false);
- }
-
-private:
- typedef CirclePathBench INHERITED;
-};
-
// Test max speedup of Analytic AA for concave paths
class AAAConcavePathBench : public PathBench {
public:
DEF_BENCH( return new CirclePathBench(FLAGS10); )
DEF_BENCH( return new CirclePathBench(FLAGS11); )
-DEF_BENCH( return new NonAACirclePathBench(FLAGS00); )
-DEF_BENCH( return new NonAACirclePathBench(FLAGS10); )
-
DEF_BENCH( return new AAAConcavePathBench(FLAGS00); )
DEF_BENCH( return new AAAConcavePathBench(FLAGS10); )
DEF_BENCH( return new AAAConvexPathBench(FLAGS00); )
return dx;
}
-static inline int diff_to_shift(SkFDot6 dx, SkFDot6 dy, int shiftAA = 2)
+static inline int diff_to_shift(SkFDot6 dx, SkFDot6 dy)
{
// cheap calc of distance from center of p0-p2 to the center of the curve
SkFDot6 dist = cheap_distance(dx, dy);
// shift down dist (it is currently in dot6)
- // down by 3 should give us 1/8 pixel accuracy (assuming our dist is accurate...)
+ // down by 5 should give us 1/2 pixel accuracy (assuming our dist is accurate...)
// this is chosen by heuristic: make it as big as possible (to minimize segments)
// ... but small enough so that our curves still look smooth
- // When shift > 0, we're using AA and everything is scaled up so we can
- // lower the accuracy.
-#ifdef SK_SUPPORT_LEGACY_QUAD_SHIFT
dist = (dist + (1 << 4)) >> 5;
-#else
- dist = (dist + (1 << 4)) >> (3 + shiftAA);
-#endif
// each subdivision (shift value) cuts this dist (error) by 1/4
return (32 - SkCLZ(dist)) >> 1;
{
SkFDot6 dx = (SkLeftShift(x1, 1) - x0 - x2) >> 2;
SkFDot6 dy = (SkLeftShift(y1, 1) - y0 - y2) >> 2;
- // This is a little confusing:
- // before this line, shift is the scale up factor for AA;
- // after this line, shift is the fCurveShift.
- shift = diff_to_shift(dx, dy, shift);
+ shift = diff_to_shift(dx, dy);
SkASSERT(shift >= 0);
}
// need at least 1 subdivision for our bias trick