Revert of Add MultiPictureDraw to nanobench (patchset #7 id:120001 of https://codereview.chromium.org/731973005/)

Reason for revert:
Needs more work

Original issue's description:
> Add MultiPictureDraw to nanobench
>
> I would like some guard against performance regressions on our side before turning layer hoisting on in Chromium.
>
> TBR=bsalomon@google.com
>
> Committed: https://skia.googlesource.com/skia/+/0ddad31012dabfc1267effc8071d37f7d606efbe

TBR=mtklein@google.com,bsalomon@google.com
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/750583002

1 files changed, 14 insertions, 90 deletions

diff --git a/bench/SKPBench.cpp b/bench/SKPBench.cpp
index fd8df429c2..5844d8a588 100644
--- a/bench/SKPBench.cpp
+++ b/bench/SKPBench.cpp
@@ -7,28 +7,15 @@
 
 #include "SKPBench.h"
 #include "SkCommandLineFlags.h"
-#include "SkMultiPictureDraw.h"
-#include "SkSurface.h"
 
 DEFINE_int32(benchTile, 256, "Tile dimension used for SKP playback.");
 
-SKPBench::SKPBench(const char* name, const SkPicture* pic, const SkIRect& clip, SkScalar scale,
-                   bool useMultiPictureDraw)
+SKPBench::SKPBench(const char* name, const SkPicture* pic, const SkIRect& clip, SkScalar scale)
     : fPic(SkRef(pic))
     , fClip(clip)
     , fScale(scale)
-    , fName(name)
-    , fUseMultiPictureDraw(useMultiPictureDraw) {
+    , fName(name) {
     fUniqueName.printf("%s_%.2g", name, scale);  // Scale makes this unqiue for skiaperf.com traces.
-    if (useMultiPictureDraw) {
-        fUniqueName.append("_mpd");
-    }
-}
-
-SKPBench::~SKPBench() {
-    for (int i = 0; i < fSurfaces.count(); ++i) {
-        fSurfaces[i]->unref();
-    }
 }
 
 const char* SKPBench::onGetName() {
@@ -39,49 +26,6 @@ const char* SKPBench::onGetUniqueName() {
     return fUniqueName.c_str();
 }
 
-void SKPBench::onPerCanvasPreDraw(SkCanvas* canvas) {
-    if (!fUseMultiPictureDraw) {
-        return;
-    }
-
-    SkIRect bounds;
-    SkAssertResult(canvas->getClipDeviceBounds(&bounds));
-
-    int xTiles = SkScalarCeilToInt(bounds.width()  / SkIntToScalar(FLAGS_benchTile));
-    int yTiles = SkScalarCeilToInt(bounds.height() / SkIntToScalar(FLAGS_benchTile));
-
-    fSurfaces.setReserve(xTiles * yTiles);
-    fTileRects.setReserve(xTiles * yTiles);
-
-    SkImageInfo ii = canvas->imageInfo().makeWH(FLAGS_benchTile, FLAGS_benchTile);
-
-    for (int y = bounds.fTop; y < bounds.fBottom; y += FLAGS_benchTile) {
-        for (int x = bounds.fLeft; x < bounds.fRight; x += FLAGS_benchTile) {
-            *fTileRects.append() = SkIRect::MakeXYWH(x, y, FLAGS_benchTile, FLAGS_benchTile);
-            *fSurfaces.push() = canvas->newSurface(ii);
-            fSurfaces.top()->getCanvas()->setMatrix(canvas->getTotalMatrix());
-            fSurfaces.top()->getCanvas()->scale(fScale, fScale);
-        }
-    }
-}
-
-void SKPBench::onPerCanvasPostDraw(SkCanvas* canvas) {
-    if (!fUseMultiPictureDraw) {
-        return;
-    }
-
-    // Draw the last set of tiles into the master canvas in case we're
-    // saving the images
-    for (int i = 0; i < fTileRects.count(); ++i) {
-        canvas->drawImage(fSurfaces[i]->newImageSnapshot(),
-                          SkIntToScalar(fTileRects[i].fLeft), SkIntToScalar(fTileRects[i].fTop));
-        SkSafeSetNull(fSurfaces[i]);
-    }
-
-    fSurfaces.rewind();
-    fTileRects.rewind();
-}
-
 bool SKPBench::isSuitableFor(Backend backend) {
     return backend != kNonRendering_Backend;
 }
@@ -91,41 +35,21 @@ SkIPoint SKPBench::onGetSize() {
 }
 
 void SKPBench::onDraw(const int loops, SkCanvas* canvas) {
-    if (fUseMultiPictureDraw) {
-        for (int i = 0; i < loops; i++) {
-            SkMultiPictureDraw mpd;
-
-            for (int i = 0; i < fTileRects.count(); ++i) {
-                SkMatrix trans;
-                trans.setTranslate(-fTileRects[i].fLeft/fScale,
-                                   -fTileRects[i].fTop/fScale);
-                mpd.add(fSurfaces[i]->getCanvas(), fPic, &trans);
-            }
-
-            mpd.draw();
-
-            for (int i = 0; i < fTileRects.count(); ++i) {
-                fSurfaces[i]->getCanvas()->flush();
-            }
-        }
-    } else {
-        SkIRect bounds;
-        SkAssertResult(canvas->getClipDeviceBounds(&bounds));
+    SkIRect bounds;
+    SkAssertResult(canvas->getClipDeviceBounds(&bounds));
 
-        SkAutoCanvasRestore overall(canvas, true/*save now*/);
-        canvas->scale(fScale, fScale);
+    SkAutoCanvasRestore overall(canvas, true/*save now*/);
+    canvas->scale(fScale, fScale);
 
-        for (int i = 0; i < loops; i++) {
-            for (int y = bounds.fTop; y < bounds.fBottom; y += FLAGS_benchTile) {
-                for (int x = bounds.fLeft; x < bounds.fRight; x += FLAGS_benchTile) {
-                    SkAutoCanvasRestore perTile(canvas, true/*save now*/);
-                    canvas->clipRect(SkRect::Make(
-                                SkIRect::MakeXYWH(x, y, FLAGS_benchTile, FLAGS_benchTile)));
-                    fPic->playback(canvas);
-                }
+    for (int i = 0; i < loops; i++) {
+        for (int y = bounds.fTop; y < bounds.fBottom; y += FLAGS_benchTile) {
+            for (int x = bounds.fLeft; x < bounds.fRight; x += FLAGS_benchTile) {
+                SkAutoCanvasRestore perTile(canvas, true/*save now*/);
+                canvas->clipRect(SkRect::Make(
+                            SkIRect::MakeXYWH(x, y, FLAGS_benchTile, FLAGS_benchTile)));
+                fPic->playback(canvas);
             }
-
-            canvas->flush();
         }
+        canvas->flush();
     }
 }