texture_layer_impl_unittest.cc revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "cc/layers/texture_layer_impl.h"
6
7#include "cc/output/context_provider.h"
8#include "cc/output/output_surface.h"
9#include "cc/test/layer_test_common.h"
10#include "testing/gtest/include/gtest/gtest.h"
11
12namespace cc {
13namespace {
14
15void IgnoreCallback(uint32 sync_point,
16                    bool lost,
17                    BlockingTaskRunner* main_thread_task_runner) {
18}
19
20TEST(TextureLayerImplTest, Occlusion) {
21  gfx::Size layer_size(1000, 1000);
22  gfx::Size viewport_size(1000, 1000);
23
24  LayerTestCommon::LayerImplTest impl;
25
26  gpu::Mailbox mailbox;
27  impl.output_surface()->context_provider()->ContextGL()->GenMailboxCHROMIUM(
28      mailbox.name);
29  TextureMailbox texture_mailbox(mailbox, GL_TEXTURE_2D, 0);
30
31  TextureLayerImpl* texture_layer_impl =
32      impl.AddChildToRoot<TextureLayerImpl>();
33  texture_layer_impl->SetBounds(layer_size);
34  texture_layer_impl->SetContentBounds(layer_size);
35  texture_layer_impl->SetDrawsContent(true);
36  texture_layer_impl->SetTextureMailbox(
37      texture_mailbox,
38      SingleReleaseCallbackImpl::Create(base::Bind(&IgnoreCallback)));
39
40  impl.CalcDrawProps(viewport_size);
41
42  {
43    SCOPED_TRACE("No occlusion");
44    gfx::Rect occluded;
45    impl.AppendQuadsWithOcclusion(texture_layer_impl, occluded);
46
47    LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(),
48                                                 gfx::Rect(layer_size));
49    EXPECT_EQ(1u, impl.quad_list().size());
50  }
51
52  {
53    SCOPED_TRACE("Full occlusion");
54    gfx::Rect occluded(texture_layer_impl->visible_content_rect());
55    impl.AppendQuadsWithOcclusion(texture_layer_impl, occluded);
56
57    LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), gfx::Rect());
58    EXPECT_EQ(impl.quad_list().size(), 0u);
59  }
60
61  {
62    SCOPED_TRACE("Partial occlusion");
63    gfx::Rect occluded(200, 0, 800, 1000);
64    impl.AppendQuadsWithOcclusion(texture_layer_impl, occluded);
65
66    size_t partially_occluded_count = 0;
67    LayerTestCommon::VerifyQuadsAreOccluded(
68        impl.quad_list(), occluded, &partially_occluded_count);
69    // The layer outputs one quad, which is partially occluded.
70    EXPECT_EQ(1u, impl.quad_list().size());
71    EXPECT_EQ(1u, partially_occluded_count);
72  }
73}
74
75}  // namespace
76}  // namespace cc
77