static void TestUnalignedQuery(skiatest::Reporter* reporter) {
// Use SkTileGridPicture to generate a SkTileGrid with a helper
SkTileGridPicture picture(10, 10, 20, 20);
SkRect rect1 = SkRect::MakeXYWH(SkIntToScalar(0), SkIntToScalar(0),
SkIntToScalar(8), SkIntToScalar(8));
SkRect rect2 = SkRect::MakeXYWH(SkIntToScalar(11), SkIntToScalar(11),
SkIntToScalar(1), SkIntToScalar(1));
SkCanvas* canvas = picture.beginRecording(20, 20, SkPicture::kOptimizeForClippedPlayback_RecordingFlag);
SkPaint paint;
canvas->drawRect(rect1, paint);
canvas->drawRect(rect2, paint);
picture.endRecording();
SkBitmap store;
store.setConfig(SkBitmap::kARGB_8888_Config, 1, 1);
store.allocPixels();
// Test parts of top-left tile
{
SkDevice device(store);
MockCanvas mockCanvas(&device);
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
}
{
SkDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-7.99f), SkFloatToScalar(-7.99f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
}
// Corner overlap
{
SkDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-9.5f), SkFloatToScalar(-9.5f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 2 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[1]);
}
// Intersect bottom right tile, but does not overlap rect 2
{
SkDevice device(store);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-16.0f), SkFloatToScalar(-16.0f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[0]);
}
}
static void TestOverlapOffsetQueryAlignment(skiatest::Reporter* reporter) {
// Use SkTileGridPicture to generate a SkTileGrid with a helper
SkTileGridPicture::TileGridInfo info;
info.fMargin.set(1, 1);
info.fOffset.set(-1, -1);
info.fTileInterval.set(8, 8);
SkTileGridPicture picture(20, 20, info);
// rect landing entirely in top left tile
SkRect rect1 = SkRect::MakeXYWH(SkIntToScalar(0), SkIntToScalar(0),
SkIntToScalar(1), SkIntToScalar(1));
// rect landing entirely in center tile
SkRect rect2 = SkRect::MakeXYWH(SkIntToScalar(12), SkIntToScalar(12),
SkIntToScalar(1), SkIntToScalar(1));
// rect landing entirely in bottomright tile
SkRect rect3 = SkRect::MakeXYWH(SkIntToScalar(19), SkIntToScalar(19),
SkIntToScalar(1), SkIntToScalar(1));
SkCanvas* canvas = picture.beginRecording(20, 20, SkPicture::kOptimizeForClippedPlayback_RecordingFlag);
SkPaint paint;
canvas->drawRect(rect1, paint);
canvas->drawRect(rect2, paint);
canvas->drawRect(rect3, paint);
picture.endRecording();
SkBitmap tileBitmap;
tileBitmap.setConfig(SkBitmap::kARGB_8888_Config, 10, 10);
tileBitmap.allocPixels();
SkBitmap moreThanATileBitmap;
moreThanATileBitmap.setConfig(SkBitmap::kARGB_8888_Config, 11, 11);
moreThanATileBitmap.allocPixels();
SkBitmap tinyBitmap;
tinyBitmap.setConfig(SkBitmap::kARGB_8888_Config, 2, 2);
tinyBitmap.allocPixels();
// Test parts of top-left tile
{
// The offset should cancel the top and left borders of the top left tile
// So a look-up at interval 0-10 should be grid aligned,
SkBitmapDevice device(tileBitmap);
MockCanvas mockCanvas(&device);
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
}
{
// Encroaching border by one pixel
SkBitmapDevice device(moreThanATileBitmap);
MockCanvas mockCanvas(&device);
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 2 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[1]);
}
{
// Tile stride is 8 (tileWidth - 2 * border pixels
// so translating by 8, should make query grid-aligned
// with middle tile.
SkBitmapDevice device(tileBitmap);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkIntToScalar(-8), SkIntToScalar(-8));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[0]);
}
{
SkBitmapDevice device(tileBitmap);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-7.9f), SkFloatToScalar(-7.9f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 2 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[1]);
}
{
SkBitmapDevice device(tileBitmap);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-8.1f), SkFloatToScalar(-8.1f));
picture.draw(&mockCanvas);
REPORTER_ASSERT(reporter, 2 == mockCanvas.fRects.count());
REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[0]);
REPORTER_ASSERT(reporter, rect3 == mockCanvas.fRects[1]);
}
{
// Regression test for crbug.com/234688
// Once the 2x2 device region is inset by margin, it yields an empty
// adjusted region, sitting right on top of the tile boundary.
SkBitmapDevice device(tinyBitmap);
MockCanvas mockCanvas(&device);
mockCanvas.translate(SkFloatToScalar(-8.0f), SkFloatToScalar(-8.0f));
picture.draw(&mockCanvas);
// This test passes by not asserting. We do not validate the rects recorded
// because the result is numerically unstable (floating point equality).
// The content of any one of the four tiles of the tilegrid would be a valid
// result since any bbox that covers the center point of the canvas will be
// recorded in all four tiles.
}
}
