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-rw-r--r--bench/QuickRejectBench.cpp61
-rw-r--r--include/core/SkCanvas.h21
-rw-r--r--include/core/SkPostConfig.h12
-rw-r--r--src/core/SkCanvas.cpp125
-rw-r--r--tests/QuickRejectTest.cpp38
5 files changed, 210 insertions, 47 deletions
diff --git a/bench/QuickRejectBench.cpp b/bench/QuickRejectBench.cpp
new file mode 100644
index 0000000000..1feade41f5
--- /dev/null
+++ b/bench/QuickRejectBench.cpp
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "Benchmark.h"
+#include "SkCanvas.h"
+#include "SkRandom.h"
+
+class QuickRejectBench : public Benchmark {
+ enum { N = 1000000 };
+ float fFloats[N];
+ int fInts [N];
+
+ const char* onGetName() override { return "quick_reject"; }
+ bool isSuitableFor(Backend backend) override { return backend != kNonRendering_Backend; }
+
+ void onDelayedSetup() override {
+ SkRandom rand;
+ for (int i = 0; i < N; ++i) {
+ fFloats[i] = 300.0f * (rand.nextSScalar1() + 0.5f);
+ }
+ }
+
+ void onDraw(int loops, SkCanvas* canvas) override {
+ while (loops --> 0) {
+ for (int i = 0; i < N - 4; i++) {
+ if (canvas->quickReject(*(SkRect*)(fFloats+i))) {
+ fInts[i] = 11;
+ } else {
+ fInts[i] = 24;
+ }
+ }
+ }
+ }
+};
+DEF_BENCH( return new QuickRejectBench; )
+
+class ConcatBench : public Benchmark {
+ SkMatrix fMatrix;
+
+ const char* onGetName() override { return "concat"; }
+ bool isSuitableFor(Backend backend) override { return backend != kNonRendering_Backend; }
+
+ void onDelayedSetup() override {
+ SkRandom r;
+ fMatrix.setScale(5.0f, 5.0f);
+ fMatrix.setTranslateX(10.0f);
+ fMatrix.setTranslateY(10.0f);
+ }
+
+ void onDraw(int loops, SkCanvas* canvas) override {
+ while (loops --> 0) {
+ canvas->setMatrix(SkMatrix::MakeScale(3.0f));
+ canvas->concat(fMatrix);
+ }
+ }
+};
+DEF_BENCH( return new ConcatBench; )
diff --git a/include/core/SkCanvas.h b/include/core/SkCanvas.h
index ef2d7dad70..73fcf43a5f 100644
--- a/include/core/SkCanvas.h
+++ b/include/core/SkCanvas.h
@@ -1609,25 +1609,18 @@ private:
*/
bool canDrawBitmapAsSprite(SkScalar x, SkScalar y, int w, int h, const SkPaint&);
- /* These maintain a cache of the clip bounds in local coordinates,
- (converted to 2s-compliment if floats are slow).
+
+ /**
+ * Keep track of the device clip bounds and if the matrix is scale-translate. This allows
+ * us to do a fast quick reject in the common case.
*/
- mutable SkRect fCachedLocalClipBounds;
- mutable bool fCachedLocalClipBoundsDirty;
+ bool fConservativeIsScaleTranslate;
+ SkRect fDeviceClipBounds;
+
bool fAllowSoftClip;
bool fAllowSimplifyClip;
const bool fConservativeRasterClip;
- const SkRect& getLocalClipBounds() const {
- if (fCachedLocalClipBoundsDirty) {
- if (!this->getClipBounds(&fCachedLocalClipBounds)) {
- fCachedLocalClipBounds.setEmpty();
- }
- fCachedLocalClipBoundsDirty = false;
- }
- return fCachedLocalClipBounds;
- }
-
class AutoValidateClip : ::SkNoncopyable {
public:
explicit AutoValidateClip(SkCanvas* canvas) : fCanvas(canvas) {
diff --git a/include/core/SkPostConfig.h b/include/core/SkPostConfig.h
index b67c863887..97c868f30f 100644
--- a/include/core/SkPostConfig.h
+++ b/include/core/SkPostConfig.h
@@ -275,6 +275,18 @@
# endif
#endif
+/**
+ * If your judgment is better than the compiler's (i.e. you've profiled it),
+ * you can use SK_NEVER_INLINE to prevent inlining.
+ */
+#if !defined(SK_NEVER_INLINE)
+# if defined(SK_BUILD_FOR_WIN)
+# define SK_NEVER_INLINE __declspec(noinline)
+# else
+# define SK_NEVER_INLINE SK_ATTRIBUTE(noinline)
+# endif
+#endif
+
//////////////////////////////////////////////////////////////////////
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE1
diff --git a/src/core/SkCanvas.cpp b/src/core/SkCanvas.cpp
index 24d9506bd7..ce786bfe8a 100644
--- a/src/core/SkCanvas.cpp
+++ b/src/core/SkCanvas.cpp
@@ -22,6 +22,7 @@
#include "SkLatticeIter.h"
#include "SkMatrixUtils.h"
#include "SkMetaData.h"
+#include "SkNx.h"
#include "SkPaintPriv.h"
#include "SkPatchUtils.h"
#include "SkPicture.h"
@@ -632,16 +633,24 @@ bool AutoDrawLooper::doNext(SkDrawFilter::Type drawType) {
////////////////////////////////////////////////////////////////////////////
+static inline SkRect qr_clip_bounds(const SkIRect& bounds) {
+ // Expand bounds out by 1 in case we are anti-aliasing. We store the
+ // bounds as floats to enable a faster quick reject implementation.
+ SkRect dst;
+ SkNx_cast<float>(Sk4i::Load(&bounds.fLeft) + Sk4i(-1,-1,1,1)).store(&dst.fLeft);
+ return dst;
+}
+
void SkCanvas::resetForNextPicture(const SkIRect& bounds) {
this->restoreToCount(1);
- fCachedLocalClipBounds.setEmpty();
- fCachedLocalClipBoundsDirty = true;
fClipStack->reset();
fMCRec->reset(bounds);
// We're peering through a lot of structs here. Only at this scope do we
// know that the device is an SkBitmapDevice (really an SkNoPixelsBitmapDevice).
static_cast<SkBitmapDevice*>(fMCRec->fLayer->fDevice)->setNewSize(bounds.size());
+ fDeviceClipBounds = qr_clip_bounds(bounds);
+ fConservativeIsScaleTranslate = true;
}
SkBaseDevice* SkCanvas::init(SkBaseDevice* device, InitFlags flags) {
@@ -652,8 +661,6 @@ SkBaseDevice* SkCanvas::init(SkBaseDevice* device, InitFlags flags) {
// const-cast.
*const_cast<bool*>(&fConservativeRasterClip) = SkToBool(flags & kConservativeRasterClip_InitFlag);
- fCachedLocalClipBounds.setEmpty();
- fCachedLocalClipBoundsDirty = true;
fAllowSoftClip = true;
fAllowSimplifyClip = false;
fDeviceCMDirty = true;
@@ -682,7 +689,10 @@ SkBaseDevice* SkCanvas::init(SkBaseDevice* device, InitFlags flags) {
SkASSERT(fProps.pixelGeometry() == device->surfaceProps().pixelGeometry());
fMCRec->fLayer->fDevice = SkRef(device);
fMCRec->fRasterClip.setRect(device->getGlobalBounds());
+ fDeviceClipBounds = qr_clip_bounds(device->getGlobalBounds());
+ fConservativeIsScaleTranslate = true;
}
+
return device;
}
@@ -1097,8 +1107,8 @@ bool SkCanvas::clipRectBounds(const SkRect* bounds, SaveLayerFlags saveLayerFlag
// early exit if the layer's bounds are clipped out
if (!ir.intersect(clipBounds)) {
if (BoundsAffectsClip(saveLayerFlags)) {
- fCachedLocalClipBoundsDirty = true;
fMCRec->fRasterClip.setEmpty();
+ fDeviceClipBounds.setEmpty();
}
return false;
}
@@ -1109,9 +1119,9 @@ bool SkCanvas::clipRectBounds(const SkRect* bounds, SaveLayerFlags saveLayerFlag
if (BoundsAffectsClip(saveLayerFlags)) {
// Simplify the current clips since they will be applied properly during restore()
- fCachedLocalClipBoundsDirty = true;
fClipStack->clipDevRect(ir, SkRegion::kReplace_Op);
fMCRec->fRasterClip.setRect(ir);
+ fDeviceClipBounds = qr_clip_bounds(ir);
}
if (intersection) {
@@ -1303,7 +1313,6 @@ void SkCanvas::internalRestore() {
SkASSERT(fMCStack.count() != 0);
fDeviceCMDirty = true;
- fCachedLocalClipBoundsDirty = true;
fClipStack->restore();
@@ -1337,6 +1346,11 @@ void SkCanvas::internalRestore() {
// no need to update fMCRec, 'cause we're killing the canvas
}
}
+
+ if (fMCRec) {
+ fConservativeIsScaleTranslate = fMCRec->fMatrix.isScaleTranslate();
+ fDeviceClipBounds = qr_clip_bounds(fMCRec->fRasterClip.getBounds());
+ }
}
sk_sp<SkSurface> SkCanvas::makeSurface(const SkImageInfo& info, const SkSurfaceProps* props) {
@@ -1491,21 +1505,20 @@ void SkCanvas::concat(const SkMatrix& matrix) {
this->checkForDeferredSave();
fDeviceCMDirty = true;
- fCachedLocalClipBoundsDirty = true;
fMCRec->fMatrix.preConcat(matrix);
-
+ fConservativeIsScaleTranslate = fMCRec->fMatrix.isScaleTranslate();
this->didConcat(matrix);
}
void SkCanvas::internalSetMatrix(const SkMatrix& matrix) {
fDeviceCMDirty = true;
- fCachedLocalClipBoundsDirty = true;
fMCRec->fMatrix = matrix;
}
void SkCanvas::setMatrix(const SkMatrix& matrix) {
this->checkForDeferredSave();
this->internalSetMatrix(matrix);
+ fConservativeIsScaleTranslate = matrix.isScaleTranslate();
this->didSetMatrix(matrix);
}
@@ -1577,6 +1590,7 @@ void SkCanvas::onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edg
fClipStack->clipEmpty();
(void)fMCRec->fRasterClip.setEmpty();
+ fDeviceClipBounds.setEmpty();
return;
}
}
@@ -1606,7 +1620,6 @@ void SkCanvas::onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edg
AutoValidateClip avc(this);
fDeviceCMDirty = true;
- fCachedLocalClipBoundsDirty = true;
if (isScaleTrans) {
const bool isAA = kSoft_ClipEdgeStyle == edgeStyle;
@@ -1622,6 +1635,8 @@ void SkCanvas::onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edg
path.addRect(rect);
this->SkCanvas::onClipPath(path, op, edgeStyle);
}
+
+ fDeviceClipBounds = qr_clip_bounds(fMCRec->fRasterClip.getBounds());
}
void SkCanvas::clipRRect(const SkRRect& rrect, SkRegion::Op op, bool doAA) {
@@ -1640,7 +1655,6 @@ void SkCanvas::onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle
AutoValidateClip avc(this);
fDeviceCMDirty = true;
- fCachedLocalClipBoundsDirty = true;
if (!fAllowSoftClip) {
edgeStyle = kHard_ClipEdgeStyle;
}
@@ -1649,6 +1663,7 @@ void SkCanvas::onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle
fMCRec->fRasterClip.op(transformedRRect, this->getTopLayerBounds(), op,
kSoft_ClipEdgeStyle == edgeStyle);
+ fDeviceClipBounds = qr_clip_bounds(fMCRec->fRasterClip.getBounds());
return;
}
@@ -1696,6 +1711,7 @@ void SkCanvas::onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edg
fClipStack->clipEmpty();
(void)fMCRec->fRasterClip.setEmpty();
+ fDeviceClipBounds.setEmpty();
return;
}
}
@@ -1704,7 +1720,6 @@ void SkCanvas::onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edg
AutoValidateClip avc(this);
fDeviceCMDirty = true;
- fCachedLocalClipBoundsDirty = true;
if (!fAllowSoftClip) {
edgeStyle = kHard_ClipEdgeStyle;
}
@@ -1735,6 +1750,7 @@ void SkCanvas::onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edg
}
fMCRec->fRasterClip.op(devPath, this->getTopLayerBounds(), op, edgeStyle);
+ fDeviceClipBounds = qr_clip_bounds(fMCRec->fRasterClip.getBounds());
}
void SkCanvas::clipRegion(const SkRegion& rgn, SkRegion::Op op) {
@@ -1746,13 +1762,13 @@ void SkCanvas::onClipRegion(const SkRegion& rgn, SkRegion::Op op) {
AutoValidateClip avc(this);
fDeviceCMDirty = true;
- fCachedLocalClipBoundsDirty = true;
// todo: signal fClipStack that we have a region, and therefore (I guess)
// we have to ignore it, and use the region directly?
fClipStack->clipDevRect(rgn.getBounds(), op);
fMCRec->fRasterClip.op(rgn, op);
+ fDeviceClipBounds = qr_clip_bounds(fMCRec->fRasterClip.getBounds());
}
#ifdef SK_DEBUG
@@ -1809,31 +1825,74 @@ bool SkCanvas::isClipRect() const {
return fMCRec->fRasterClip.isRect();
}
-bool SkCanvas::quickReject(const SkRect& rect) const {
- if (!rect.isFinite())
- return true;
+static inline bool is_nan_or_clipped(const Sk4f& devRect, const Sk4f& devClip) {
+#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2
+ __m128 lLtT = _mm_unpacklo_ps(devRect.fVec, devClip.fVec);
+ __m128 RrBb = _mm_unpackhi_ps(devClip.fVec, devRect.fVec);
+ __m128 mask = _mm_cmplt_ps(lLtT, RrBb);
+ return 0xF != _mm_movemask_ps(mask);
+#elif defined(SK_ARM_HAS_NEON)
+ float32x4_t lLtT = vzipq_f32(devRect.fVec, devClip.fVec).val[0];
+ float32x4_t RrBb = vzipq_f32(devClip.fVec, devRect.fVec).val[1];
+ uint32x4_t mask = vcltq_f32(lLtT, RrBb);
+ return 0xFFFFFFFFFFFFFFFF != (uint64_t) vmovn_u32(mask);
+#else
+ SkRect devRectAsRect;
+ SkRect devClipAsRect;
+ devRect.store(&devRectAsRect.fLeft);
+ devClip.store(&devClipAsRect.fLeft);
+ return !devRectAsRect.isFinite() || !devRectAsRect.intersect(devClipAsRect);
+#endif
+}
+// It's important for this function to not be inlined. Otherwise the compiler will share code
+// between the fast path and the slow path, resulting in two slow paths.
+static SK_NEVER_INLINE bool quick_reject_slow_path(const SkRect& src, const SkRect& deviceClip,
+ const SkMatrix& matrix) {
+ SkRect deviceRect;
+ matrix.mapRect(&deviceRect, src);
+ return !deviceRect.isFinite() || !deviceRect.intersect(deviceClip);
+}
+
+bool SkCanvas::quickReject(const SkRect& src) const {
+#ifdef SK_DEBUG
+ // Verify that fDeviceClipBounds are set properly.
+ SkRect tmp = qr_clip_bounds(fMCRec->fRasterClip.getBounds());
if (fMCRec->fRasterClip.isEmpty()) {
- return true;
+ SkASSERT(fDeviceClipBounds.isEmpty() || tmp == fDeviceClipBounds);
+ } else {
+ SkASSERT(tmp == fDeviceClipBounds);
}
- if (fMCRec->fMatrix.hasPerspective()) {
- SkRect dst;
- fMCRec->fMatrix.mapRect(&dst, rect);
- return !SkIRect::Intersects(dst.roundOut(), fMCRec->fRasterClip.getBounds());
- } else {
- const SkRect& clipR = this->getLocalClipBounds();
+ // Verify that fConservativeIsScaleTranslate is set properly.
+ SkASSERT(!fConservativeIsScaleTranslate || fMCRec->fMatrix.isScaleTranslate());
+#endif
- // for speed, do the most likely reject compares first
- // TODO: should we use | instead, or compare all 4 at once?
- if (rect.fTop >= clipR.fBottom || rect.fBottom <= clipR.fTop) {
- return true;
- }
- if (rect.fLeft >= clipR.fRight || rect.fRight <= clipR.fLeft) {
- return true;
- }
- return false;
+ if (!fConservativeIsScaleTranslate) {
+ return quick_reject_slow_path(src, fDeviceClipBounds, fMCRec->fMatrix);
}
+
+ // We inline the implementation of mapScaleTranslate() for the fast path.
+ float sx = fMCRec->fMatrix.getScaleX();
+ float sy = fMCRec->fMatrix.getScaleY();
+ float tx = fMCRec->fMatrix.getTranslateX();
+ float ty = fMCRec->fMatrix.getTranslateY();
+ Sk4f scale(sx, sy, sx, sy);
+ Sk4f trans(tx, ty, tx, ty);
+
+ // Apply matrix.
+ Sk4f ltrb = Sk4f::Load(&src.fLeft) * scale + trans;
+
+ // Make sure left < right, top < bottom.
+ Sk4f rblt(ltrb[2], ltrb[3], ltrb[0], ltrb[1]);
+ Sk4f min = Sk4f::Min(ltrb, rblt);
+ Sk4f max = Sk4f::Max(ltrb, rblt);
+ // We can extract either pair [0,1] or [2,3] from min and max and be correct, but on
+ // ARM this sequence generates the fastest (a single instruction).
+ Sk4f devRect = Sk4f(min[2], min[3], max[0], max[1]);
+
+ // Check if the device rect is NaN or outside the clip.
+ return is_nan_or_clipped(devRect, Sk4f::Load(&fDeviceClipBounds.fLeft));
}
bool SkCanvas::quickReject(const SkPath& path) const {
diff --git a/tests/QuickRejectTest.cpp b/tests/QuickRejectTest.cpp
index 6a978743f6..b39484bd89 100644
--- a/tests/QuickRejectTest.cpp
+++ b/tests/QuickRejectTest.cpp
@@ -103,7 +103,45 @@ static void test_layers(skiatest::Reporter* reporter) {
REPORTER_ASSERT(reporter, false == canvas.quickReject(SkRect::MakeWH(60, 60)));
}
+static void test_quick_reject(skiatest::Reporter* reporter) {
+ SkCanvas canvas(100, 100);
+ SkRect r0 = SkRect::MakeLTRB(-50.0f, -50.0f, 50.0f, 50.0f);
+ SkRect r1 = SkRect::MakeLTRB(-50.0f, 110.0f, 50.0f, 120.0f);
+ SkRect r2 = SkRect::MakeLTRB(110.0f, -50.0f, 120.0f, 50.0f);
+ SkRect r3 = SkRect::MakeLTRB(-120.0f, -50.0f, 120.0f, 50.0f);
+ SkRect r4 = SkRect::MakeLTRB(-50.0f, -120.0f, 50.0f, 120.0f);
+ SkRect r5 = SkRect::MakeLTRB(-120.0f, -120.0f, 120.0f, 120.0f);
+ SkRect r6 = SkRect::MakeLTRB(-120.0f, -120.0f, -110.0f, -110.0f);
+ SkRect r7 = SkRect::MakeLTRB(SK_ScalarNaN, -50.0f, 50.0f, 50.0f);
+ SkRect r8 = SkRect::MakeLTRB(-50.0f, SK_ScalarNaN, 50.0f, 50.0f);
+ SkRect r9 = SkRect::MakeLTRB(-50.0f, -50.0f, SK_ScalarNaN, 50.0f);
+ SkRect r10 = SkRect::MakeLTRB(-50.0f, -50.0f, 50.0f, SK_ScalarNaN);
+ REPORTER_ASSERT(reporter, false == canvas.quickReject(r0));
+ REPORTER_ASSERT(reporter, true == canvas.quickReject(r1));
+ REPORTER_ASSERT(reporter, true == canvas.quickReject(r2));
+ REPORTER_ASSERT(reporter, false == canvas.quickReject(r3));
+ REPORTER_ASSERT(reporter, false == canvas.quickReject(r4));
+ REPORTER_ASSERT(reporter, false == canvas.quickReject(r5));
+ REPORTER_ASSERT(reporter, true == canvas.quickReject(r6));
+ REPORTER_ASSERT(reporter, true == canvas.quickReject(r7));
+ REPORTER_ASSERT(reporter, true == canvas.quickReject(r8));
+ REPORTER_ASSERT(reporter, true == canvas.quickReject(r9));
+ REPORTER_ASSERT(reporter, true == canvas.quickReject(r10));
+
+ SkMatrix m = SkMatrix::MakeScale(2.0f);
+ m.setTranslateX(10.0f);
+ m.setTranslateY(10.0f);
+ canvas.setMatrix(m);
+ SkRect r11 = SkRect::MakeLTRB(5.0f, 5.0f, 100.0f, 100.0f);
+ SkRect r12 = SkRect::MakeLTRB(5.0f, 50.0f, 100.0f, 100.0f);
+ SkRect r13 = SkRect::MakeLTRB(50.0f, 5.0f, 100.0f, 100.0f);
+ REPORTER_ASSERT(reporter, false == canvas.quickReject(r11));
+ REPORTER_ASSERT(reporter, true == canvas.quickReject(r12));
+ REPORTER_ASSERT(reporter, true == canvas.quickReject(r13));
+}
+
DEF_TEST(QuickReject, reporter) {
test_drawBitmap(reporter);
test_layers(reporter);
+ test_quick_reject(reporter);
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-19 02:18:58 +0000