1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_CANVAS_CANVAS2D_MESH_2D_BUFFER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_CANVAS_CANVAS2D_MESH_2D_BUFFER_H_
#include <stdint.h>
#include <utility>
#include "base/memory/scoped_refptr.h"
#include "base/numerics/safe_conversions.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/bindings/v8_external_memory_accounter.h"
#include "v8/include/v8-isolate.h"
namespace cc {
template <typename T>
class RefCountedBuffer;
} // namespace cc
namespace blink {
// JS wrapper for a retained mesh buffer.
//
// This is the base for vertex/uv/index JS buffers (SkPoint/SkPoint/uint16_t
// specializations, respectively).
//
// The actual data payload is stored in a RefcountedBuffer, which enables
// sharing with the rest of paint pipeline, and avoids deep copies during
// paint op recording.
template <typename T>
class Mesh2DBuffer : public ScriptWrappable {
public:
Mesh2DBuffer(const Mesh2DBuffer&) = delete;
Mesh2DBuffer& operator=(const Mesh2DBuffer&) = delete;
~Mesh2DBuffer() override {
external_memory_accounter_.Decrease(
v8::Isolate::GetCurrent(),
base::checked_cast<int64_t>(buffer_->data().size() * sizeof(T)));
}
scoped_refptr<cc::RefCountedBuffer<T>> GetBuffer() const { return buffer_; }
protected:
explicit Mesh2DBuffer(scoped_refptr<cc::RefCountedBuffer<T>> buffer)
: buffer_(std::move(buffer)) {
external_memory_accounter_.Increase(
v8::Isolate::GetCurrent(),
base::checked_cast<int64_t>(buffer_->data().size() * sizeof(T)));
}
private:
scoped_refptr<cc::RefCountedBuffer<T>> buffer_;
NO_UNIQUE_ADDRESS V8ExternalMemoryAccounterBase external_memory_accounter_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_CANVAS_CANVAS2D_MESH_2D_BUFFER_H_
|
