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      1 #include "DMTileGridTask.h"
      2 #include "DMWriteTask.h"
      3 #include "DMUtil.h"
      4 
      5 #include "SkCommandLineFlags.h"
      6 #include "SkPicture.h"
      7 #include "SkTileGridPicture.h"
      8 
      9 // TODO(mtklein): Tile grid tests are currently failing.  (Skia issue 1198).  When fixed, -> true.
     10 DEFINE_bool(tileGrid, false, "If true, run picture replay tests with a tile grid.");
     11 
     12 namespace DM {
     13 
     14 TileGridTask::TileGridTask(const Task& parent, skiagm::GM* gm, SkBitmap reference, SkISize tileSize)
     15     : Task(parent)
     16     , fName(UnderJoin(parent.name().c_str(), "tilegrid"))
     17     , fGM(gm)
     18     , fReference(reference)
     19     , fTileSize(tileSize)
     20     {}
     21 
     22 static int tiles_needed(int fullDimension, int tileDimension) {
     23     return (fullDimension + tileDimension - 1) / tileDimension;
     24 }
     25 
     26 void TileGridTask::draw() {
     27     const SkTileGridPicture::TileGridInfo info = {
     28         fTileSize,
     29         SkISize::Make(0,0),   // Overlap between adjacent tiles.
     30         SkIPoint::Make(0,0),  // Offset.
     31     };
     32     const SkISize size = fGM->getISize();
     33     SkTileGridPicture recorded(size.width(), size.height(), info);
     34     RecordPicture(fGM.get(), &recorded, SkPicture::kUsePathBoundsForClip_RecordingFlag);
     35 
     36     SkBitmap full;
     37     SetupBitmap(fReference.config(), fGM.get(), &full);
     38     SkCanvas fullCanvas(full);
     39 
     40     SkBitmap tile;
     41     tile.setConfig(fReference.config(), fTileSize.width(), fTileSize.height());
     42     tile.allocPixels();
     43     SkCanvas tileCanvas(tile);
     44 
     45     SkPaint paint;
     46     paint.setXfermodeMode(SkXfermode::kSrc_Mode);
     47 
     48     for (int y = 0; y < tiles_needed(full.height(), tile.height()); y++) {
     49         for (int x = 0; x < tiles_needed(full.width(), tile.width()); x++) {
     50             SkAutoCanvasRestore ar(&tileCanvas, true/*also save now*/);
     51 
     52             const SkScalar xOffset = SkIntToScalar(x * tile.width()),
     53                            yOffset = SkIntToScalar(y * tile.height());
     54             SkMatrix matrix = tileCanvas.getTotalMatrix();
     55             matrix.postTranslate(-xOffset, -yOffset);
     56             tileCanvas.setMatrix(matrix);
     57 
     58             recorded.draw(&tileCanvas);
     59             tileCanvas.flush();
     60             fullCanvas.drawBitmap(tile, xOffset, yOffset, &paint);
     61         }
     62     }
     63 
     64     if (!BitmapsEqual(full, fReference)) {
     65         this->fail();
     66         this->spawnChild(SkNEW_ARGS(WriteTask, (*this, full)));
     67     }
     68 }
     69 
     70 bool TileGridTask::shouldSkip() const {
     71     if (fGM->getFlags() & skiagm::GM::kSkipPicture_Flag) {
     72         return true;
     73     }
     74     if (fGM->getFlags() & skiagm::GM::kSkipTiled_Flag) {
     75         return true;
     76     }
     77     return !FLAGS_tileGrid;
     78 }
     79 
     80 }  // namespace DM
     81