1b8072371b
Let accumulated visual context updates keep the previous tree version when rebuilt with the same shape. Display lists reference visual context tree versions, so keep compositor-only updates on the old version unless the tree structure changes. Add coverage for version reuse and incompatible tree shapes.
56 lines
2 KiB
C++
56 lines
2 KiB
C++
/*
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* Copyright (c) 2026-present, the Ladybird developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibTest/TestCase.h>
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#include <LibWeb/Painting/AccumulatedVisualContext.h>
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using namespace Web::Painting;
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static TransformData make_transform(float translation)
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{
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auto matrix = Gfx::FloatMatrix4x4::identity();
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matrix[0, 3] = translation;
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matrix[1, 3] = translation;
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return { matrix, { translation, translation } };
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}
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TEST_CASE(compatible_trees_can_reuse_versions)
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{
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auto tree = AccumulatedVisualContextTree::create(make_transform(1));
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tree.append(make_transform(2), VISUAL_VIEWPORT_NODE_INDEX);
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auto updated_tree = AccumulatedVisualContextTree::create(make_transform(3));
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updated_tree.append(make_transform(4), VISUAL_VIEWPORT_NODE_INDEX);
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EXPECT_NE(tree.version(), updated_tree.version());
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EXPECT(updated_tree.is_compatible_with(tree));
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updated_tree.reuse_version_from(tree);
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EXPECT_EQ(updated_tree.version(), tree.version());
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}
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TEST_CASE(compatibility_requires_same_shape)
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{
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auto tree = AccumulatedVisualContextTree::create();
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tree.append(make_transform(1), VISUAL_VIEWPORT_NODE_INDEX);
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auto shorter_tree = AccumulatedVisualContextTree::create();
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EXPECT(!shorter_tree.is_compatible_with(tree));
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auto different_type_tree = AccumulatedVisualContextTree::create();
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different_type_tree.append(EffectsData {}, VISUAL_VIEWPORT_NODE_INDEX);
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EXPECT(!different_type_tree.is_compatible_with(tree));
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auto different_parent_tree = AccumulatedVisualContextTree::create();
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auto parent = different_parent_tree.append(make_transform(1), VISUAL_VIEWPORT_NODE_INDEX);
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different_parent_tree.append(make_transform(2), parent);
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auto same_node_count_tree = AccumulatedVisualContextTree::create();
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same_node_count_tree.append(make_transform(1), VISUAL_VIEWPORT_NODE_INDEX);
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same_node_count_tree.append(make_transform(2), VISUAL_VIEWPORT_NODE_INDEX);
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EXPECT(!different_parent_tree.is_compatible_with(same_node_count_tree));
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}
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