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      1 /*
      2  * Copyright 2014 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "SKPBench.h"
      9 #include "SkCommandLineFlags.h"
     10 #include "SkMultiPictureDraw.h"
     11 #include "SkSurface.h"
     12 
     13 #if SK_SUPPORT_GPU
     14 #include "GrContext.h"
     15 #include "GrContextPriv.h"
     16 #endif
     17 
     18 // These CPU tile sizes are not good per se, but they are similar to what Chrome uses.
     19 DEFINE_int32(CPUbenchTileW, 256, "Tile width  used for CPU SKP playback.");
     20 DEFINE_int32(CPUbenchTileH, 256, "Tile height used for CPU SKP playback.");
     21 
     22 DEFINE_int32(GPUbenchTileW, 1600, "Tile width  used for GPU SKP playback.");
     23 DEFINE_int32(GPUbenchTileH, 512, "Tile height used for GPU SKP playback.");
     24 
     25 SKPBench::SKPBench(const char* name, const SkPicture* pic, const SkIRect& clip, SkScalar scale,
     26                    bool useMultiPictureDraw, bool doLooping)
     27     : fPic(SkRef(pic))
     28     , fClip(clip)
     29     , fScale(scale)
     30     , fName(name)
     31     , fUseMultiPictureDraw(useMultiPictureDraw)
     32     , fDoLooping(doLooping) {
     33     fUniqueName.printf("%s_%.2g", name, scale);  // Scale makes this unqiue for perf.skia.org traces.
     34     if (useMultiPictureDraw) {
     35         fUniqueName.append("_mpd");
     36     }
     37 }
     38 
     39 SKPBench::~SKPBench() {
     40     for (int i = 0; i < fSurfaces.count(); ++i) {
     41         fSurfaces[i]->unref();
     42     }
     43 }
     44 
     45 const char* SKPBench::onGetName() {
     46     return fName.c_str();
     47 }
     48 
     49 const char* SKPBench::onGetUniqueName() {
     50     return fUniqueName.c_str();
     51 }
     52 
     53 void SKPBench::onPerCanvasPreDraw(SkCanvas* canvas) {
     54     SkIRect bounds = canvas->getDeviceClipBounds();
     55     SkAssertResult(!bounds.isEmpty());
     56 
     57     const bool gpu = canvas->getGrContext() != nullptr;
     58     int tileW = gpu ? FLAGS_GPUbenchTileW : FLAGS_CPUbenchTileW,
     59         tileH = gpu ? FLAGS_GPUbenchTileH : FLAGS_CPUbenchTileH;
     60 
     61     tileW = SkTMin(tileW, bounds.width());
     62     tileH = SkTMin(tileH, bounds.height());
     63 
     64     int xTiles = SkScalarCeilToInt(bounds.width()  / SkIntToScalar(tileW));
     65     int yTiles = SkScalarCeilToInt(bounds.height() / SkIntToScalar(tileH));
     66 
     67     fSurfaces.setReserve(xTiles * yTiles);
     68     fTileRects.setReserve(xTiles * yTiles);
     69 
     70     SkImageInfo ii = canvas->imageInfo().makeWH(tileW, tileH);
     71 
     72     for (int y = bounds.fTop; y < bounds.fBottom; y += tileH) {
     73         for (int x = bounds.fLeft; x < bounds.fRight; x += tileW) {
     74             const SkIRect tileRect = SkIRect::MakeXYWH(x, y, tileW, tileH);
     75             *fTileRects.append() = tileRect;
     76             *fSurfaces.push() = canvas->makeSurface(ii).release();
     77 
     78             // Never want the contents of a tile to include stuff the parent
     79             // canvas clips out
     80             SkRect clip = SkRect::Make(bounds);
     81             clip.offset(-SkIntToScalar(tileRect.fLeft), -SkIntToScalar(tileRect.fTop));
     82             fSurfaces.top()->getCanvas()->clipRect(clip);
     83 
     84             fSurfaces.top()->getCanvas()->setMatrix(canvas->getTotalMatrix());
     85             fSurfaces.top()->getCanvas()->scale(fScale, fScale);
     86         }
     87     }
     88 }
     89 
     90 void SKPBench::onPerCanvasPostDraw(SkCanvas* canvas) {
     91     // Draw the last set of tiles into the master canvas in case we're
     92     // saving the images
     93     for (int i = 0; i < fTileRects.count(); ++i) {
     94         sk_sp<SkImage> image(fSurfaces[i]->makeImageSnapshot());
     95         canvas->drawImage(image,
     96                           SkIntToScalar(fTileRects[i].fLeft), SkIntToScalar(fTileRects[i].fTop));
     97         SkSafeSetNull(fSurfaces[i]);
     98     }
     99 
    100     fSurfaces.rewind();
    101     fTileRects.rewind();
    102 }
    103 
    104 bool SKPBench::isSuitableFor(Backend backend) {
    105     return backend != kNonRendering_Backend;
    106 }
    107 
    108 SkIPoint SKPBench::onGetSize() {
    109     return SkIPoint::Make(fClip.width(), fClip.height());
    110 }
    111 
    112 void SKPBench::onDraw(int loops, SkCanvas* canvas) {
    113     SkASSERT(fDoLooping || 1 == loops);
    114     while (1) {
    115         if (fUseMultiPictureDraw) {
    116             this->drawMPDPicture();
    117         } else {
    118             this->drawPicture();
    119         }
    120         if (0 == --loops) {
    121             break;
    122         }
    123 #if SK_SUPPORT_GPU
    124         // Ensure the GrContext doesn't combine ops across draw loops.
    125         if (GrContext* context = canvas->getGrContext()) {
    126             context->flush();
    127         }
    128 #endif
    129     }
    130 }
    131 
    132 void SKPBench::drawMPDPicture() {
    133     SkMultiPictureDraw mpd;
    134 
    135     for (int j = 0; j < fTileRects.count(); ++j) {
    136         SkMatrix trans;
    137         trans.setTranslate(-fTileRects[j].fLeft/fScale,
    138                            -fTileRects[j].fTop/fScale);
    139         mpd.add(fSurfaces[j]->getCanvas(), fPic.get(), &trans);
    140     }
    141 
    142     mpd.draw();
    143 
    144     for (int j = 0; j < fTileRects.count(); ++j) {
    145         fSurfaces[j]->getCanvas()->flush();
    146     }
    147 }
    148 
    149 void SKPBench::drawPicture() {
    150     for (int j = 0; j < fTileRects.count(); ++j) {
    151         const SkMatrix trans = SkMatrix::MakeTrans(-fTileRects[j].fLeft / fScale,
    152                                                    -fTileRects[j].fTop / fScale);
    153         fSurfaces[j]->getCanvas()->drawPicture(fPic.get(), &trans, nullptr);
    154     }
    155 
    156     for (int j = 0; j < fTileRects.count(); ++j) {
    157         fSurfaces[j]->getCanvas()->flush();
    158     }
    159 }
    160 
    161 #if SK_SUPPORT_GPU
    162 #include "GrGpu.h"
    163 static void draw_pic_for_stats(SkCanvas* canvas, GrContext* context, const SkPicture* picture,
    164                                SkTArray<SkString>* keys, SkTArray<double>* values,
    165                                const char* tag) {
    166     context->resetGpuStats();
    167     canvas->drawPicture(picture);
    168     canvas->flush();
    169 
    170     int offset = keys->count();
    171     context->dumpGpuStatsKeyValuePairs(keys, values);
    172     context->dumpCacheStatsKeyValuePairs(keys, values);
    173 
    174     // append tag, but only to new tags
    175     for (int i = offset; i < keys->count(); i++, offset++) {
    176         (*keys)[i].appendf("_%s", tag);
    177     }
    178 }
    179 #endif
    180 
    181 void SKPBench::getGpuStats(SkCanvas* canvas, SkTArray<SkString>* keys, SkTArray<double>* values) {
    182 #if SK_SUPPORT_GPU
    183     // we do a special single draw and then dump the key / value pairs
    184     GrContext* context = canvas->getGrContext();
    185     if (!context) {
    186         return;
    187     }
    188 
    189     // TODO refactor this out if we want to test other subclasses of skpbench
    190     context->flush();
    191     context->freeGpuResources();
    192     context->resetContext();
    193     context->contextPriv().getGpu()->resetShaderCacheForTesting();
    194     draw_pic_for_stats(canvas, context, fPic.get(), keys, values, "first_frame");
    195 
    196     // draw second frame
    197     draw_pic_for_stats(canvas, context, fPic.get(), keys, values, "second_frame");
    198 
    199 #endif
    200 }
    201