| Flutter Impeller |

host_buffer_unittests.cc
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1 // Copyright 2013 The Flutter 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 "flutter/testing/testing.h"
6 #include "impeller/core/host_buffer.h"
7 #include "impeller/entity/entity_playground.h"
8
9 namespace impeller {
10 namespace testing {
11
12 using HostBufferTest = EntityPlayground;
13 INSTANTIATE_PLAYGROUND_SUITE(HostBufferTest);
14
15 TEST_P(HostBufferTest, CanEmplace) {
16 struct Length2 {
17 uint8_t pad[2];
18 };
19 static_assert(sizeof(Length2) == 2u);
20
21 auto buffer = HostBuffer::Create(GetContext()->GetResourceAllocator());
22
23 for (size_t i = 0; i < 12500; i++) {
24 auto view = buffer->Emplace(Length2{});
25 ASSERT_TRUE(view);
26 ASSERT_EQ(view.range, Range(i * sizeof(Length2), 2u));
27 }
28 }
29
30 TEST_P(HostBufferTest, CanEmplaceWithAlignment) {
31 struct Length2 {
32 uint8_t pad[2];
33 };
34 static_assert(sizeof(Length2) == 2);
35 struct alignas(16) Align16 {
36 uint8_t pad[2];
37 };
38 static_assert(alignof(Align16) == 16);
39 static_assert(sizeof(Align16) == 16);
40
41 auto buffer = HostBuffer::Create(GetContext()->GetResourceAllocator());
42 ASSERT_TRUE(buffer);
43
44 {
45 auto view = buffer->Emplace(Length2{});
46 ASSERT_TRUE(view);
47 ASSERT_EQ(view.range, Range(0u, 2u));
48 }
49
50 {
51 auto view = buffer->Emplace(Align16{});
52 ASSERT_TRUE(view);
53 ASSERT_EQ(view.range.offset, 16u);
54 ASSERT_EQ(view.range.length, 16u);
55 }
56 {
57 auto view = buffer->Emplace(Length2{});
58 ASSERT_TRUE(view);
59 ASSERT_EQ(view.range, Range(32u, 2u));
60 }
61
62 {
63 auto view = buffer->Emplace(Align16{});
64 ASSERT_TRUE(view);
65 ASSERT_EQ(view.range.offset, 48u);
66 ASSERT_EQ(view.range.length, 16u);
67 }
68 }
69
70 TEST_P(HostBufferTest, HostBufferInitialState) {
71 auto buffer = HostBuffer::Create(GetContext()->GetResourceAllocator());
72
73 EXPECT_EQ(buffer->GetStateForTest().current_buffer, 0u);
74 EXPECT_EQ(buffer->GetStateForTest().current_frame, 0u);
75 EXPECT_EQ(buffer->GetStateForTest().total_buffer_count, 1u);
76 }
77
78 TEST_P(HostBufferTest, ResetIncrementsFrameCounter) {
79 auto buffer = HostBuffer::Create(GetContext()->GetResourceAllocator());
80
81 EXPECT_EQ(buffer->GetStateForTest().current_frame, 0u);
82
83 buffer->Reset();
84 EXPECT_EQ(buffer->GetStateForTest().current_frame, 1u);
85
86 buffer->Reset();
87 EXPECT_EQ(buffer->GetStateForTest().current_frame, 2u);
88
89 buffer->Reset();
90 EXPECT_EQ(buffer->GetStateForTest().current_frame, 0u);
91 }
92
93 TEST_P(HostBufferTest,
94 EmplacingLargerThanBlockSizeCreatesOneOffBufferCallback) {
95 auto buffer = HostBuffer::Create(GetContext()->GetResourceAllocator());
96
97 // Emplace an amount larger than the block size, to verify that the host
98 // buffer does not create a buffer.
99 auto buffer_view = buffer->Emplace(1024000 + 10, 0, [](uint8_t* data) {});
100
101 EXPECT_EQ(buffer->GetStateForTest().current_buffer, 0u);
102 EXPECT_EQ(buffer->GetStateForTest().current_frame, 0u);
103 EXPECT_EQ(buffer->GetStateForTest().total_buffer_count, 1u);
104 }
105
106 TEST_P(HostBufferTest, EmplacingLargerThanBlockSizeCreatesOneOffBuffer) {
107 auto buffer = HostBuffer::Create(GetContext()->GetResourceAllocator());
108
109 // Emplace an amount larger than the block size, to verify that the host
110 // buffer does not create a buffer.
111 auto buffer_view = buffer->Emplace(nullptr, 1024000 + 10, 0);
112
113 EXPECT_EQ(buffer->GetStateForTest().current_buffer, 0u);
114 EXPECT_EQ(buffer->GetStateForTest().current_frame, 0u);
115 EXPECT_EQ(buffer->GetStateForTest().total_buffer_count, 1u);
116 }
117
118 TEST_P(HostBufferTest, UnusedBuffersAreDiscardedWhenResetting) {
119 auto buffer = HostBuffer::Create(GetContext()->GetResourceAllocator());
120
121 // Emplace two large allocations to force the allocation of a second buffer.
122 auto buffer_view_a = buffer->Emplace(1020000, 0, [](uint8_t* data) {});
123 auto buffer_view_b = buffer->Emplace(1020000, 0, [](uint8_t* data) {});
124
125 EXPECT_EQ(buffer->GetStateForTest().current_buffer, 1u);
126 EXPECT_EQ(buffer->GetStateForTest().total_buffer_count, 2u);
127 EXPECT_EQ(buffer->GetStateForTest().current_frame, 0u);
128
129 // Reset until we get back to this frame.
130 for (auto i = 0; i < 3; i++) {
131 buffer->Reset();
132 }
133
134 EXPECT_EQ(buffer->GetStateForTest().current_buffer, 0u);
135 EXPECT_EQ(buffer->GetStateForTest().total_buffer_count, 2u);
136 EXPECT_EQ(buffer->GetStateForTest().current_frame, 0u);
137
138 // Now when we reset, the buffer should get dropped.
139 // Reset until we get back to this frame.
140 for (auto i = 0; i < 3; i++) {
141 buffer->Reset();
142 }
143
144 EXPECT_EQ(buffer->GetStateForTest().current_buffer, 0u);
145 EXPECT_EQ(buffer->GetStateForTest().total_buffer_count, 1u);
146 EXPECT_EQ(buffer->GetStateForTest().current_frame, 0u);
147 }
148
149 TEST_P(HostBufferTest, EmplaceWithProcIsAligned) {
150 auto buffer = HostBuffer::Create(GetContext()->GetResourceAllocator());
151
152 BufferView view = buffer->Emplace(std::array<char, 21>());
153 EXPECT_EQ(view.range, Range(0, 21));
154
155 view = buffer->Emplace(64, 16, [](uint8_t*) {});
156 EXPECT_EQ(view.range, Range(32, 64));
157 }
158
159 } // namespace testing
160 } // namespace impeller
host_buffer.h
data
std::shared_ptr< const fml::Mapping > data
Definition: texture_gles.cc:63
impeller::HostBuffer::Create
static std::shared_ptr< HostBuffer > Create(const std::shared_ptr< Allocator > &allocator)
Definition: host_buffer.cc:20
buffer_view
BufferView buffer_view
Definition: blit_command_gles.cc:127
impeller::BufferView::range
Range range
Definition: buffer_view.h:17
impeller::testing::TEST_P
TEST_P(AiksTest, CanRenderAdvancedBlendColorFilterWithSaveLayer)
Definition: aiks_blend_unittests.cc:21
impeller::testing::INSTANTIATE_PLAYGROUND_SUITE
INSTANTIATE_PLAYGROUND_SUITE(AiksTest)
impeller::BufferView
Definition: buffer_view.h:15
impeller::EntityPlayground
Definition: entity_playground.h:17
impeller::Range
Definition: range.h:12
impeller
Definition: aiks_blend_unittests.cc:18
entity_playground.h