DM: add --tileGrid
BUG=
R=epoger@google.com
Review URL: https://codereview.chromium.org/88563003
git-svn-id: http://skia.googlecode.com/svn/trunk@12408 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/dm/DMTileGridTask.cpp b/dm/DMTileGridTask.cpp
new file mode 100644
index 0000000..67cbbd9
--- /dev/null
+++ b/dm/DMTileGridTask.cpp
@@ -0,0 +1,77 @@
+#include "DMTileGridTask.h"
+#include "DMWriteTask.h"
+#include "DMUtil.h"
+
+#include "SkCommandLineFlags.h"
+#include "SkPicture.h"
+#include "SkTileGridPicture.h"
+
+// TODO(mtklein): Tile grid tests are currently failing. (Skia issue 1198). When fixed, -> true.
+DEFINE_bool(tileGrid, false, "If true, run picture replay tests with a tile grid.");
+
+namespace DM {
+
+TileGridTask::TileGridTask(const Task& parent, skiagm::GM* gm, SkBitmap reference, SkISize tileSize)
+ : Task(parent)
+ , fName(UnderJoin(parent.name().c_str(), "tilegrid"))
+ , fGM(gm)
+ , fReference(reference)
+ , fTileSize(tileSize)
+ {}
+
+static int tiles_needed(int fullDimension, int tileDimension) {
+ return (fullDimension + tileDimension - 1) / tileDimension;
+}
+
+void TileGridTask::draw() {
+ const SkTileGridPicture::TileGridInfo info = {
+ fTileSize,
+ SkISize::Make(0,0), // Overlap between adjacent tiles.
+ SkIPoint::Make(0,0), // Offset.
+ };
+ const SkISize size = fGM->getISize();
+ SkTileGridPicture recorded(size.width(), size.height(), info);
+ RecordPicture(fGM.get(), &recorded, SkPicture::kUsePathBoundsForClip_RecordingFlag);
+
+ SkBitmap full;
+ SetupBitmap(fReference.config(), fGM.get(), &full);
+ SkCanvas fullCanvas(full);
+
+ SkBitmap tile;
+ tile.setConfig(fReference.config(), fTileSize.width(), fTileSize.height());
+ tile.allocPixels();
+ SkCanvas tileCanvas(tile);
+
+ SkPaint paint;
+ paint.setXfermodeMode(SkXfermode::kSrc_Mode);
+
+ for (int y = 0; y < tiles_needed(full.height(), tile.height()); y++) {
+ for (int x = 0; x < tiles_needed(full.width(), tile.width()); x++) {
+ SkAutoCanvasRestore ar(&tileCanvas, true/*also save now*/);
+
+ const SkScalar xOffset = x * tile.width(),
+ yOffset = y * tile.height();
+ SkMatrix matrix = tileCanvas.getTotalMatrix();
+ matrix.postTranslate(-xOffset, -yOffset);
+ tileCanvas.setMatrix(matrix);
+
+ recorded.draw(&tileCanvas);
+ tileCanvas.flush();
+ fullCanvas.drawBitmap(tile, xOffset, yOffset, &paint);
+ }
+ }
+
+ if (!BitmapsEqual(full, fReference)) {
+ this->fail();
+ this->spawnChild(SkNEW_ARGS(WriteTask, (*this, full)));
+ }
+}
+
+bool TileGridTask::shouldSkip() const {
+ if (fGM->getFlags() & skiagm::GM::kSkipPicture_Flag) {
+ return true;
+ }
+ return !FLAGS_tileGrid;
+}
+
+} // namespace DM