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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBitmapDevice.h"
#include "SkCanvas.h"
#include "SkTileGrid.h"
#include "SkTileGridPicture.h"
#include "Test.h"
enum Tile {
kTopLeft_Tile = 0x1,
kTopRight_Tile = 0x2,
kBottomLeft_Tile = 0x4,
kBottomRight_Tile = 0x8,
kAll_Tile = kTopLeft_Tile | kTopRight_Tile | kBottomLeft_Tile | kBottomRight_Tile,
};
static void verifyTileHits(skiatest::Reporter* reporter, SkIRect rect,
uint32_t tileMask, int borderPixels = 0) {
SkTileGridPicture::TileGridInfo info;
info.fMargin.set(borderPixels, borderPixels);
info.fOffset.setZero();
info.fTileInterval.set(10 - 2 * borderPixels, 10 - 2 * borderPixels);
SkTileGrid grid(2, 2, info, NULL);
grid.insert(NULL, rect, false);
REPORTER_ASSERT(reporter, grid.tileCount(0, 0) ==
((tileMask & kTopLeft_Tile)? 1 : 0));
REPORTER_ASSERT(reporter, grid.tileCount(1, 0) ==
((tileMask & kTopRight_Tile)? 1 : 0));
REPORTER_ASSERT(reporter, grid.tileCount(0, 1) ==
((tileMask & kBottomLeft_Tile)? 1 : 0));
REPORTER_ASSERT(reporter, grid.tileCount(1, 1) ==
((tileMask & kBottomRight_Tile)? 1 : 0));
}
static SkIRect query(float x, float y, float w, float h) {
// inflate for the margin++ in tilegrid
SkRect bounds = SkRect::MakeXYWH(x, y, w, h);
SkIRect r;
bounds.roundOut(&r);
r.outset(1, 1); // to counteract the inset in SkTileGrid::search
return r;
}
DEF_TEST(TileGrid_UnalignedQuery, reporter) {
SkTileGridPicture::TileGridInfo info;
info.fMargin.setEmpty();
info.fOffset.setZero();
info.fTileInterval.set(10, 10);
SkIRect rect1 = SkIRect::MakeXYWH(0, 0, 8, 8);
SkIRect rect2 = SkIRect::MakeXYWH(11, 11, 1, 1);
SkTileGrid grid(2, 2, info, SkTileGridNextDatum<SkPictureStateTree::Draw>);
grid.insert(&rect1, rect1, true);
grid.insert(&rect2, rect2, true);
// Test parts of top-left tile
{
SkTDArray<void*> rects;
grid.search(query(0.0f, 0.0f, 1.0f, 1.0f), &rects);
REPORTER_ASSERT(reporter, 1 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect1) >= 0);
}
{
SkTDArray<void*> rects;
grid.search(query(7.99f, 7.99f, 1.0f, 1.0f), &rects);
REPORTER_ASSERT(reporter, 1 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect1) >= 0);
}
// Corner overlap
{
SkTDArray<void*> rects;
grid.search(query(9.5f, 9.5f, 1.0f, 1.0f), &rects);
REPORTER_ASSERT(reporter, 2 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect1) >= 0);
REPORTER_ASSERT(reporter, rects.find(&rect2) >= 0);
}
// Intersect bottom right tile, but does not overlap rect 2
{
SkTDArray<void*> rects;
grid.search(query(16.0f, 16.0f, 1.0f, 1.0f), &rects);
REPORTER_ASSERT(reporter, 1 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect2) >= 0);
}
// Out of bounds queries, snap to border tiles
{
SkTDArray<void*> rects;
grid.search(query(-2.0f, 0.0f, 1.0f, 1.0f), &rects);
REPORTER_ASSERT(reporter, 1 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect1) >= 0);
}
{
SkTDArray<void*> rects;
grid.search(query(0.0f, -2.0f, 1.0f, 1.0f), &rects);
REPORTER_ASSERT(reporter, 1 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect1) >= 0);
}
{
SkTDArray<void*> rects;
grid.search(query(22.0f, 16.0f, 1.0f, 1.0f), &rects);
REPORTER_ASSERT(reporter, 1 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect2) >= 0);
}
{
SkTDArray<void*> rects;
grid.search(query(16.0f, 22.0f, 1.0f, 1.0f), &rects);
REPORTER_ASSERT(reporter, 1 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect2) >= 0);
}
}
DEF_TEST(TileGrid_OverlapOffsetQueryAlignment, 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);
// rect landing entirely in top left tile
SkIRect rect1 = SkIRect::MakeXYWH(0, 0, 1, 1);
// rect landing entirely in center tile
SkIRect rect2 = SkIRect::MakeXYWH(12, 12, 1, 1);
// rect landing entirely in bottomright tile
SkIRect rect3 = SkIRect::MakeXYWH(19, 19, 1, 1);
SkTileGrid grid(3, 3, info, SkTileGridNextDatum<SkPictureStateTree::Draw>);
grid.insert(&rect1, rect1, true);
grid.insert(&rect2, rect2, true);
grid.insert(&rect3, rect3, true);
// 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,
SkTDArray<void*> rects;
grid.search(query(0.0f, 0.0f, 10.0f, 10.0f), &rects);
REPORTER_ASSERT(reporter, 1 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect1) >= 0);
}
{
// Encroaching border by one pixel
SkTDArray<void*> rects;
grid.search(query(0.0f, 0.0f, 11.0f, 11.0f), &rects);
REPORTER_ASSERT(reporter, 2 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect1) >= 0);
REPORTER_ASSERT(reporter, rects.find(&rect2) >= 0);
}
{
// Tile stride is 8 (tileWidth - 2 * border pixels
// so translating by 8, should make query grid-aligned
// with middle tile.
SkTDArray<void*> rects;
grid.search(query(8.0f, 8.0f, 10.0f, 10.0f), &rects);
REPORTER_ASSERT(reporter, 1 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect2) >= 0);
}
{
SkTDArray<void*> rects;
grid.search(query(7.9f, 7.9f, 10.0f, 10.0f), &rects);
REPORTER_ASSERT(reporter, 2 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect1) >= 0);
REPORTER_ASSERT(reporter, rects.find(&rect2) >= 0);
}
{
SkTDArray<void*> rects;
grid.search(query(8.1f, 8.1f, 10.0f, 10.0f), &rects);
REPORTER_ASSERT(reporter, 2 == rects.count());
REPORTER_ASSERT(reporter, rects.find(&rect2) >= 0);
REPORTER_ASSERT(reporter, rects.find(&rect3) >= 0);
}
{
// 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.
SkTDArray<void*> rects;
grid.search(query(8.0f, 8.0f, 2.0f, 2.0f), &rects);
// 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.
}
}
DEF_TEST(TileGrid, reporter) {
// Out of bounds
verifyTileHits(reporter, SkIRect::MakeXYWH(30, 0, 1, 1), 0);
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 30, 1, 1), 0);
verifyTileHits(reporter, SkIRect::MakeXYWH(-10, 0, 1, 1), 0);
verifyTileHits(reporter, SkIRect::MakeXYWH(0, -10, 1, 1), 0);
// Dilation for AA consideration
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 0, 9, 9), kTopLeft_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 0, 10, 10), kAll_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(9, 9, 1, 1), kAll_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(10, 10, 1, 1), kAll_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(11, 11, 1, 1), kBottomRight_Tile);
// BorderPixels
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 0, 6, 6), kTopLeft_Tile, 1);
verifyTileHits(reporter, SkIRect::MakeXYWH(0, 0, 7, 7), kAll_Tile, 1);
verifyTileHits(reporter, SkIRect::MakeXYWH(9, 9, 1, 1), kAll_Tile, 1);
verifyTileHits(reporter, SkIRect::MakeXYWH(10, 10, 1, 1), kBottomRight_Tile, 1);
verifyTileHits(reporter, SkIRect::MakeXYWH(17, 17, 1, 1), kBottomRight_Tile, 1);
// BBoxes that overlap tiles
verifyTileHits(reporter, SkIRect::MakeXYWH(5, 5, 10, 1), kTopLeft_Tile | kTopRight_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(5, 5, 1, 10), kTopLeft_Tile |
kBottomLeft_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(5, 5, 10, 10), kAll_Tile);
verifyTileHits(reporter, SkIRect::MakeXYWH(-10, -10, 40, 40), kAll_Tile);
}
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