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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "cc/tiles/picture_layer_tiling.h" | 5 #include "cc/tiles/picture_layer_tiling.h" |
6 | 6 |
7 #include <stddef.h> | 7 #include <stddef.h> |
8 | 8 |
9 #include <algorithm> | 9 #include <algorithm> |
10 #include <cmath> | 10 #include <cmath> |
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808 tiling_data_.TileBounds(tile->tiling_i_index(), tile->tiling_j_index()); | 808 tiling_data_.TileBounds(tile->tiling_i_index(), tile->tiling_j_index()); |
809 bool tile_is_visible = current_visible_rect_.Intersects(tile_bounds); | 809 bool tile_is_visible = current_visible_rect_.Intersects(tile_bounds); |
810 if (!tile_is_visible) | 810 if (!tile_is_visible) |
811 return false; | 811 return false; |
812 | 812 |
813 if (IsTileOccludedOnCurrentTree(tile)) | 813 if (IsTileOccludedOnCurrentTree(tile)) |
814 return false; | 814 return false; |
815 return true; | 815 return true; |
816 } | 816 } |
817 | 817 |
818 bool PictureLayerTiling::ShouldProcessTileForCheckerImages( | |
Khushal
2017/04/11 22:45:22
This one was to skip tiles on the active tree if t
| |
819 const Tile* tile) const { | |
820 // If this is the pending tree and the tile is not occluded, it needs to be | |
821 // processed for checker-images. | |
822 if (tree_ == PENDING_TREE) | |
823 return !IsTileOccludedOnCurrentTree(tile); | |
824 | |
825 DCHECK_EQ(tree_, ACTIVE_TREE); | |
826 const PictureLayerTiling* pending_twin = | |
827 client_->GetPendingOrActiveTwinTiling(this); | |
828 | |
829 // If we don't have a pending twin, the tiling may be evicted upon activation, | |
830 // or we may not have a pending tree. So use the occlusion on the current | |
831 // tree. | |
832 if (!pending_twin) | |
833 return !IsTileOccludedOnCurrentTree(tile); | |
834 | |
835 // If the tile will be replaced upon activation, then we don't need to process | |
836 // it for checkered images. Since it is the active tree's content that we will | |
837 // invalidate and replace once the decode finishes. | |
838 if (!TilingMatchesTileIndices(pending_twin) || | |
839 pending_twin->TileAt(tile->tiling_i_index(), tile->tiling_j_index())) { | |
840 return false; | |
841 } | |
842 | |
843 // Ask the pending twin if this tile will become occluded upon activation. | |
844 return !pending_twin->IsTileOccludedOnCurrentTree(tile); | |
845 } | |
846 | |
818 void PictureLayerTiling::UpdateRequiredStatesOnTile(Tile* tile) const { | 847 void PictureLayerTiling::UpdateRequiredStatesOnTile(Tile* tile) const { |
819 tile->set_required_for_activation(IsTileRequiredForActivation(tile)); | 848 tile->set_required_for_activation(IsTileRequiredForActivation(tile)); |
820 tile->set_required_for_draw(IsTileRequiredForDraw(tile)); | 849 tile->set_required_for_draw(IsTileRequiredForDraw(tile)); |
821 } | 850 } |
822 | 851 |
823 PrioritizedTile PictureLayerTiling::MakePrioritizedTile( | 852 PrioritizedTile PictureLayerTiling::MakePrioritizedTile( |
824 Tile* tile, | 853 Tile* tile, |
825 PriorityRectType priority_rect_type) const { | 854 PriorityRectType priority_rect_type) const { |
826 DCHECK(tile); | 855 DCHECK(tile); |
827 DCHECK(raster_source()->CoversRect(tile->enclosing_layer_rect())) | 856 DCHECK(raster_source()->CoversRect(tile->enclosing_layer_rect())) |
828 << "Tile layer rect: " << tile->enclosing_layer_rect().ToString(); | 857 << "Tile layer rect: " << tile->enclosing_layer_rect().ToString(); |
829 | 858 |
830 UpdateRequiredStatesOnTile(tile); | 859 UpdateRequiredStatesOnTile(tile); |
831 const auto& tile_priority = ComputePriorityForTile(tile, priority_rect_type); | 860 const auto& tile_priority = ComputePriorityForTile(tile, priority_rect_type); |
832 DCHECK((!tile->required_for_activation() && !tile->required_for_draw()) || | 861 DCHECK((!tile->required_for_activation() && !tile->required_for_draw()) || |
833 tile_priority.priority_bin == TilePriority::NOW || | 862 tile_priority.priority_bin == TilePriority::NOW || |
834 !client_->HasValidTilePriorities()); | 863 !client_->HasValidTilePriorities()); |
835 | 864 |
836 // Note that TileManager will consider this flag but may rasterize the tile | 865 // Note that TileManager will consider this flag but may rasterize the tile |
837 // anyway (if tile is required for activation for example). We should process | 866 // anyway (if tile is required for activation for example). We should process |
838 // the tile for images only if it's further than half of the skewport extent. | 867 // the tile for images only if it's further than half of the skewport extent. |
839 bool process_for_images_only = | 868 bool process_for_images_only = |
840 tile_priority.distance_to_visible > min_preraster_distance_ && | 869 tile_priority.distance_to_visible > min_preraster_distance_ && |
841 (tile_priority.distance_to_visible > max_preraster_distance_ || | 870 (tile_priority.distance_to_visible > max_preraster_distance_ || |
842 tile_priority.distance_to_visible > | 871 tile_priority.distance_to_visible > |
843 0.5f * max_skewport_extent_in_screen_space_); | 872 0.5f * max_skewport_extent_in_screen_space_); |
844 return PrioritizedTile(tile, this, tile_priority, IsTileOccluded(tile), | 873 return PrioritizedTile(tile, this, tile_priority, IsTileOccluded(tile), |
845 process_for_images_only); | 874 process_for_images_only, |
875 ShouldProcessTileForCheckerImages(tile)); | |
846 } | 876 } |
847 | 877 |
848 std::map<const Tile*, PrioritizedTile> | 878 std::map<const Tile*, PrioritizedTile> |
849 PictureLayerTiling::UpdateAndGetAllPrioritizedTilesForTesting() const { | 879 PictureLayerTiling::UpdateAndGetAllPrioritizedTilesForTesting() const { |
850 std::map<const Tile*, PrioritizedTile> result; | 880 std::map<const Tile*, PrioritizedTile> result; |
851 for (const auto& key_tile_pair : tiles_) { | 881 for (const auto& key_tile_pair : tiles_) { |
852 Tile* tile = key_tile_pair.second.get(); | 882 Tile* tile = key_tile_pair.second.get(); |
853 PrioritizedTile prioritized_tile = | 883 PrioritizedTile prioritized_tile = |
854 MakePrioritizedTile(tile, ComputePriorityRectTypeForTile(tile)); | 884 MakePrioritizedTile(tile, ComputePriorityRectTypeForTile(tile)); |
855 result.insert(std::make_pair(prioritized_tile.tile(), prioritized_tile)); | 885 result.insert(std::make_pair(prioritized_tile.tile(), prioritized_tile)); |
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938 size_t PictureLayerTiling::GPUMemoryUsageInBytes() const { | 968 size_t PictureLayerTiling::GPUMemoryUsageInBytes() const { |
939 size_t amount = 0; | 969 size_t amount = 0; |
940 for (TileMap::const_iterator it = tiles_.begin(); it != tiles_.end(); ++it) { | 970 for (TileMap::const_iterator it = tiles_.begin(); it != tiles_.end(); ++it) { |
941 const Tile* tile = it->second.get(); | 971 const Tile* tile = it->second.get(); |
942 amount += tile->GPUMemoryUsageInBytes(); | 972 amount += tile->GPUMemoryUsageInBytes(); |
943 } | 973 } |
944 return amount; | 974 return amount; |
945 } | 975 } |
946 | 976 |
947 } // namespace cc | 977 } // namespace cc |
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