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