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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/test/test_gpu_memory_buffer_manager.h"
#include "base/logging.h"
#include "ui/gfx/gpu_memory_buffer.h"
namespace cc {
namespace {
size_t StrideInBytes(size_t width, gfx::GpuMemoryBuffer::Format format) {
switch (format) {
case gfx::GpuMemoryBuffer::ATCIA:
case gfx::GpuMemoryBuffer::DXT5:
return width;
case gfx::GpuMemoryBuffer::ATC:
case gfx::GpuMemoryBuffer::DXT1:
case gfx::GpuMemoryBuffer::ETC1:
DCHECK_EQ(width % 2, 0U);
return width / 2;
case gfx::GpuMemoryBuffer::RGBA_8888:
case gfx::GpuMemoryBuffer::RGBX_8888:
case gfx::GpuMemoryBuffer::BGRA_8888:
return width * 4;
}
NOTREACHED();
return 0;
}
class GpuMemoryBufferImpl : public gfx::GpuMemoryBuffer {
public:
GpuMemoryBufferImpl(const gfx::Size& size,
Format format,
scoped_ptr<base::SharedMemory> shared_memory)
: size_(size),
format_(format),
shared_memory_(shared_memory.Pass()),
mapped_(false) {}
// Overridden from gfx::GpuMemoryBuffer:
bool Map(void** data) override {
DCHECK(!mapped_);
if (!shared_memory_->Map(StrideInBytes(size_.width(), format_) *
size_.height()))
return false;
mapped_ = true;
*data = shared_memory_->memory();
return true;
}
void Unmap() override {
DCHECK(mapped_);
shared_memory_->Unmap();
mapped_ = false;
}
bool IsMapped() const override { return mapped_; }
Format GetFormat() const override { return format_; }
void GetStride(uint32* stride) const override {
*stride = StrideInBytes(size_.width(), format_);
}
gfx::GpuMemoryBufferHandle GetHandle() const override {
gfx::GpuMemoryBufferHandle handle;
handle.type = gfx::SHARED_MEMORY_BUFFER;
handle.handle = shared_memory_->handle();
return handle;
}
ClientBuffer AsClientBuffer() override {
return reinterpret_cast<ClientBuffer>(this);
}
private:
const gfx::Size size_;
gfx::GpuMemoryBuffer::Format format_;
scoped_ptr<base::SharedMemory> shared_memory_;
bool mapped_;
};
} // namespace
TestGpuMemoryBufferManager::TestGpuMemoryBufferManager() {
}
TestGpuMemoryBufferManager::~TestGpuMemoryBufferManager() {
}
scoped_ptr<gfx::GpuMemoryBuffer>
TestGpuMemoryBufferManager::AllocateGpuMemoryBuffer(
const gfx::Size& size,
gfx::GpuMemoryBuffer::Format format,
gfx::GpuMemoryBuffer::Usage usage) {
scoped_ptr<base::SharedMemory> shared_memory(new base::SharedMemory);
if (!shared_memory->CreateAnonymous(StrideInBytes(size.width(), format) *
size.height()))
return nullptr;
return make_scoped_ptr<gfx::GpuMemoryBuffer>(
new GpuMemoryBufferImpl(size, format, shared_memory.Pass()));
}
gfx::GpuMemoryBuffer*
TestGpuMemoryBufferManager::GpuMemoryBufferFromClientBuffer(
ClientBuffer buffer) {
return reinterpret_cast<gfx::GpuMemoryBuffer*>(buffer);
}
void TestGpuMemoryBufferManager::SetDestructionSyncPoint(
gfx::GpuMemoryBuffer* buffer,
uint32 sync_point) {
}
} // namespace cc
|
