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#include "DMQuiltTask.h"
#include "DMUtil.h"
#include "DMWriteTask.h"
#include "SkBBHFactory.h"
#include "SkCommandLineFlags.h"
#include "SkPicture.h"
#include "SkTaskGroup.h"
DEFINE_bool(quilt, true, "If true, draw GM via a picture into a quilt of small tiles and compare.");
DEFINE_int32(quiltTile, 256, "Dimension of (square) quilt tile.");
namespace DM {
static SkString suffix(QuiltTask::Backend backend, QuiltTask::BBH bbh) {
static const char* kBackends[] = { "default", "skrecord" };
static const char* kBBHs[] = { "nobbh", "rtree", "tilegrid" };
return SkStringPrintf("%s-%s", kBackends[backend], kBBHs[bbh]);
}
QuiltTask::QuiltTask(const Task& parent, skiagm::GM* gm, SkBitmap reference,
QuiltTask::BBH bbh, QuiltTask::Backend backend)
: CpuTask(parent)
, fBBH(bbh)
, fBackend(backend)
, fName(UnderJoin(parent.name().c_str(), suffix(backend, bbh).c_str()))
, fGM(gm)
, fReference(reference)
{}
static int tiles_needed(int fullDimension, int tileDimension) {
return (fullDimension + tileDimension - 1) / tileDimension;
}
class Tile : public SkRunnable {
public:
Tile(int x, int y, const SkPicture& picture, SkBitmap* quilt)
: fX(x * FLAGS_quiltTile)
, fY(y * FLAGS_quiltTile)
, fPicture(picture)
, fQuilt(quilt) {}
virtual void run() SK_OVERRIDE {
SkBitmap tile;
fQuilt->extractSubset(&tile, SkIRect::MakeXYWH(fX, fY, FLAGS_quiltTile, FLAGS_quiltTile));
SkCanvas tileCanvas(tile);
tileCanvas.translate(SkIntToScalar(-fX), SkIntToScalar(-fY));
fPicture.playback(&tileCanvas);
tileCanvas.flush();
delete this;
}
private:
const int fX, fY;
const SkPicture& fPicture;
SkBitmap* fQuilt;
};
void QuiltTask::draw() {
SkAutoTDelete<SkBBHFactory> factory;
switch (fBBH) {
case kNone_BBH: break;
case kRTree_BBH:
factory.reset(SkNEW(SkRTreeFactory));
break;
case kTileGrid_BBH: {
const SkTileGridFactory::TileGridInfo tiles = {
{ FLAGS_quiltTile, FLAGS_quiltTile },
/*overlap: */{0, 0},
/*offset: */{0, 0},
};
factory.reset(SkNEW_ARGS(SkTileGridFactory, (tiles)));
break;
}
}
// A couple GMs draw wrong when using a bounding box hierarchy.
// This almost certainly means we have a bug to fix, but for now
// just draw without a bounding box hierarchy.
if (fGM->getFlags() & skiagm::GM::kNoBBH_Flag) {
factory.reset(NULL);
}
SkAutoTUnref<const SkPicture> recorded(
RecordPicture(fGM.get(), factory.get(), kSkRecord_Backend == fBackend));
SkBitmap full;
AllocatePixels(fReference, &full);
if (fGM->getFlags() & skiagm::GM::kSkipTiled_Flag) {
// Some GMs don't draw exactly the same when tiled. Draw them in one go.
SkCanvas canvas(full);
recorded->playback(&canvas);
canvas.flush();
} else {
// Draw tiles in parallel into the same bitmap, simulating aggressive impl-side painting.
SkTaskGroup tg;
for (int y = 0; y < tiles_needed(full.height(), FLAGS_quiltTile); y++) {
for (int x = 0; x < tiles_needed(full.width(), FLAGS_quiltTile); x++) {
// Deletes itself when done.
tg.add(new Tile(x, y, *recorded, &full));
}
}
}
if (!BitmapsEqual(full, fReference)) {
this->fail();
this->spawnChild(SkNEW_ARGS(WriteTask, (*this, "GM", full)));
}
}
bool QuiltTask::shouldSkip() const {
if (fGM->getFlags() & skiagm::GM::kSkipPicture_Flag) {
return true;
}
return !FLAGS_quilt;
}
} // namespace DM
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