| Flutter Impeller |

tessellator_playground_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 "gtest/gtest.h"
7
8 #include "flutter/display_list/geometry/dl_path_builder.h"
9 #include "impeller/playground/playground_test.h"
10 #include "impeller/tessellator/tessellator.h"
11
12 namespace impeller {
13 namespace testing {
14
15 using TessellatorPlaygroundTest = PlaygroundTest;
16 INSTANTIATE_PLAYGROUND_SUITE(TessellatorPlaygroundTest);
17
18 template <typename T>
19 std::vector<T> CopyBufferView(const BufferView& vertex_buffer) {
20 Range range = vertex_buffer.GetRange();
21 uint8_t* base_ptr = vertex_buffer.GetBuffer()->OnGetContents() + range.offset;
22 return std::vector<T>(reinterpret_cast<T*>(base_ptr),
23 reinterpret_cast<T*>(base_ptr + range.length));
24 }
25
26 TEST_P(TessellatorPlaygroundTest, TessellateConvex16or32Bit) {
27 auto tessellator16 = std::make_shared<Tessellator>(false);
28 auto tessellator32 = std::make_shared<Tessellator>(true);
29
30 auto data_host_buffer = HostBuffer::Create(
31 GetContext()->GetResourceAllocator(), GetContext()->GetIdleWaiter(),
32 GetContext()->GetCapabilities()->GetMinimumUniformAlignment());
33 auto indexes_host_buffer = HostBuffer::Create(
34 GetContext()->GetResourceAllocator(), GetContext()->GetIdleWaiter(),
35 GetContext()->GetCapabilities()->GetMinimumUniformAlignment());
36
37 auto path = flutter::DlPath::MakeRect(Rect::MakeLTRB(0, 0, 10, 10));
38
39 auto vertex_buffer16 = tessellator16->TessellateConvex(
40 path, *data_host_buffer, *indexes_host_buffer, 1.0, false, false);
41 auto vertex_buffer32 = tessellator32->TessellateConvex(
42 path, *data_host_buffer, *indexes_host_buffer, 1.0, false, false);
43
44 const std::vector<Point> expected = {
45 {0, 0}, {10, 0}, {10, 10}, {0, 10}, {0, 0}};
46 const std::vector<uint16_t> expected_indices = {0, 1, 3, 2};
47
48 EXPECT_EQ(vertex_buffer16.index_type, IndexType::k16bit);
49 EXPECT_EQ(expected, CopyBufferView<Point>(vertex_buffer16.vertex_buffer));
50 EXPECT_EQ(expected_indices,
51 CopyBufferView<uint16_t>(vertex_buffer16.index_buffer));
52
53 EXPECT_EQ(vertex_buffer32.index_type, IndexType::k32bit);
54 EXPECT_EQ(expected, CopyBufferView<Point>(vertex_buffer32.vertex_buffer));
55 EXPECT_EQ(
56 std::vector<uint32_t>(expected_indices.begin(), expected_indices.end()),
57 CopyBufferView<uint32_t>(vertex_buffer32.index_buffer));
58 }
59
60 } // namespace testing
61 } // namespace impeller
impeller::DeviceBuffer::OnGetContents
virtual uint8_t * OnGetContents() const =0
impeller::HostBuffer::Create
static std::shared_ptr< HostBuffer > Create(const std::shared_ptr< Allocator > &allocator, const std::shared_ptr< const IdleWaiter > &idle_waiter, size_t minimum_uniform_alignment)
Definition: host_buffer.cc:21
impeller::PlaygroundTest
Definition: playground_test.h:22
impeller::testing::TEST_P
TEST_P(AiksTest, DrawAtlasNoColor)
Definition: aiks_dl_atlas_unittests.cc:59
impeller::testing::INSTANTIATE_PLAYGROUND_SUITE
INSTANTIATE_PLAYGROUND_SUITE(AiksTest)
impeller::testing::CopyBufferView
std::vector< T > CopyBufferView(const BufferView &vertex_buffer)
Definition: tessellator_playground_unittests.cc:19
impeller
Definition: allocation.cc:12
impeller::IndexType::k16bit
@ k16bit
impeller::IndexType::k32bit
@ k32bit
playground_test.h
impeller::BufferView
Definition: buffer_view.h:19
impeller::BufferView::GetRange
Range GetRange() const
Definition: buffer_view.h:27
impeller::BufferView::GetBuffer
const DeviceBuffer * GetBuffer() const
Definition: buffer_view.cc:17
impeller::Range
Definition: range.h:13
impeller::Range::length
size_t length
Definition: range.h:15
impeller::Range::offset
size_t offset
Definition: range.h:14
impeller::TRect< Scalar >::MakeLTRB
constexpr static TRect MakeLTRB(Type left, Type top, Type right, Type bottom)
Definition: rect.h:129
tessellator.h