cc: Expand invalidation to full tile when recording is missing for the tile.

cc/base/tiling_data_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/base/tiling_data.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "cc/test/geometry_test_utils.h"
@@ skipping 2184 matching lines @@
   // Containing, but larger than tiling rect.
   EXPECT_RECT_EQ(data.tiling_rect(),
                  data.ExpandRectToTileBoundsWithBorders(
                      gfx::Rect(origin, gfx::Size(100, 100))));
 
   // Non-intersecting with tiling rect.
   gfx::Rect non_intersect(origin.x() + 200, origin.y() + 200, 100, 100);
   EXPECT_FALSE(non_intersect.Intersects(data.tiling_rect()));
   EXPECT_RECT_EQ(gfx::Rect(),
                  data.ExpandRectToTileBoundsWithBorders(non_intersect));
+
+  TilingData data2(gfx::Size(8, 8), gfx::Rect(origin, gfx::Size(32, 64)), true);
+
+  // Inside other tile border texels doesn't include other tiles.
+  gfx::Rect inner_rect_src(data2.TileBounds(1, 1));
+  inner_rect_src.Inset(data2.border_texels(), data.border_texels());
+  gfx::Rect inner_rect_result(data2.TileBoundsWithBorder(1, 1));
+  gfx::Rect expanded = data2.ExpandRectToTileBoundsWithBorders(inner_rect_src);
+  EXPECT_EQ(inner_rect_result.ToString(), expanded.ToString());
+}
+
+TEST_P(TilingDataTest, ExpandRectToTileBounds) {
+  gfx::Point origin = GetParam();
+  TilingData data(gfx::Size(4, 4), gfx::Rect(origin, gfx::Size(16, 32)), true);
+
+  // Small rect at origin rounds up to tile 0, 0.
+  gfx::Rect at_origin_src(origin, gfx::Size(1, 1));
+  gfx::Rect at_origin_result(data.TileBounds(0, 0));
+  EXPECT_NE(at_origin_src, at_origin_result);
+  EXPECT_RECT_EQ(at_origin_result, data.ExpandRectToTileBounds(at_origin_src));
+
+  // Arbitrary internal rect.
+  gfx::Rect rect_src(origin.x() + 6, origin.y() + 6, 1, 3);
+  // Tile 2, 2 => gfx::Rect(4, 4, 4, 4)
+  // Tile 3, 4 => gfx::Rect(6, 8, 4, 4)
+  gfx::Rect rect_result(
+      gfx::UnionRects(data.TileBounds(2, 2), data.TileBounds(3, 4)));
+  EXPECT_NE(rect_src, rect_result);
+  EXPECT_RECT_EQ(rect_result, data.ExpandRectToTileBounds(rect_src));
+
+  // On tile bounds rounds up to next tile (since border overlaps).
+  gfx::Rect border_rect_src(
+      gfx::UnionRects(data.TileBounds(1, 2), data.TileBounds(3, 4)));
+  gfx::Rect border_rect_result(
+      gfx::UnionRects(data.TileBounds(0, 1), data.TileBounds(4, 5)));
+  EXPECT_RECT_EQ(border_rect_result,
+                 data.ExpandRectToTileBounds(border_rect_src));
+
+  // Equal to tiling rect.
+  EXPECT_RECT_EQ(data.tiling_rect(),
+                 data.ExpandRectToTileBounds(data.tiling_rect()));
+
+  // Containing, but larger than tiling rect.
+  EXPECT_RECT_EQ(
+      data.tiling_rect(),
+      data.ExpandRectToTileBounds(gfx::Rect(origin, gfx::Size(100, 100))));
+
+  // Non-intersecting with tiling rect.
+  gfx::Rect non_intersect(origin.x() + 200, origin.y() + 200, 100, 100);
+  EXPECT_FALSE(non_intersect.Intersects(data.tiling_rect()));
+  EXPECT_RECT_EQ(gfx::Rect(), data.ExpandRectToTileBounds(non_intersect));
+
+  TilingData data2(gfx::Size(8, 8), gfx::Rect(origin, gfx::Size(32, 64)), true);
+
+  // Inside other tile border texels doesn't include other tiles.
+  gfx::Rect inner_rect_src(data2.TileBounds(1, 1));
+  inner_rect_src.Inset(data2.border_texels(), data.border_texels());
+  gfx::Rect inner_rect_result(data2.TileBounds(1, 1));
+  gfx::Rect expanded = data2.ExpandRectToTileBounds(inner_rect_src);
+  EXPECT_EQ(inner_rect_result.ToString(), expanded.ToString());
 }
 
 TEST_P(TilingDataTest, Assignment) {
   gfx::Point origin = GetParam();
 
   {
     TilingData source(
         gfx::Size(8, 8), gfx::Rect(origin, gfx::Size(16, 32)), true);
     TilingData dest = source;
     EXPECT_EQ(source.border_texels(), dest.border_texels());
@@ skipping 1275 matching lines @@
                         TilingDataTest,
                         ::testing::Values(gfx::Point(42, 17),
                                           gfx::Point(0, 0),
                                           gfx::Point(-8, 15),
                                           gfx::Point(-12, 4),
                                           gfx::Point(-16, -35),
                                           gfx::Point(-10000, -15000)));
 }  // namespace
 
 }  // namespace cc