blob: a0cf1e21a2b39a6ebf6e26fea590aeef1299d0f6 (
plain)
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
113
114
115
116
117
|
// Copyright (c) 2012 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 "content/public/browser/compositor_util.h"
#include "base/command_line.h"
#include "base/metrics/field_trial.h"
#include "content/public/browser/gpu_data_manager.h"
#include "content/public/common/content_constants.h"
#include "content/public/common/content_switches.h"
#include "gpu/config/gpu_feature_type.h"
namespace content {
namespace {
bool CanDoAcceleratedCompositing() {
const GpuDataManager* manager = GpuDataManager::GetInstance();
// Don't run the field trial if gpu access has been blocked or
// accelerated compositing is blacklisted.
if (!manager->GpuAccessAllowed(NULL) ||
manager->IsFeatureBlacklisted(
gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING))
return false;
// Check for SwiftShader.
if (manager->ShouldUseSwiftShader())
return false;
const CommandLine& command_line = *CommandLine::ForCurrentProcess();
if (command_line.HasSwitch(switches::kDisableAcceleratedCompositing))
return false;
return true;
}
bool IsForceCompositingModeBlacklisted() {
return GpuDataManager::GetInstance()->IsFeatureBlacklisted(
gpu::GPU_FEATURE_TYPE_FORCE_COMPOSITING_MODE);
}
} // namespace
bool IsThreadedCompositingEnabled() {
#if defined(OS_WIN) && defined(USE_AURA)
// We always want compositing on Aura Windows.
return true;
#endif
if (!CanDoAcceleratedCompositing())
return false;
const CommandLine& command_line = *CommandLine::ForCurrentProcess();
// Command line switches take precedence over blacklist and field trials.
if (command_line.HasSwitch(switches::kDisableForceCompositingMode) ||
command_line.HasSwitch(switches::kDisableThreadedCompositing))
return false;
#if defined(OS_CHROMEOS)
// We always want threaded compositing on ChromeOS unless it's explicitly
// disabled above.
return true;
#endif
if (command_line.HasSwitch(switches::kEnableThreadedCompositing))
return true;
if (IsForceCompositingModeBlacklisted())
return false;
base::FieldTrial* trial =
base::FieldTrialList::Find(kGpuCompositingFieldTrialName);
return trial &&
trial->group_name() == kGpuCompositingFieldTrialThreadEnabledName;
}
bool IsForceCompositingModeEnabled() {
#if defined(OS_WIN) && defined(USE_AURA)
// We always want compositing on Aura Windows.
return true;
#endif
if (!CanDoAcceleratedCompositing())
return false;
const CommandLine& command_line = *CommandLine::ForCurrentProcess();
// Command line switches take precedence over blacklisting and field trials.
if (command_line.HasSwitch(switches::kDisableForceCompositingMode))
return false;
#if defined(OS_CHROMEOS)
// We always want compositing ChromeOS unless it's explicitly disabled above.
return true;
#endif
if (command_line.HasSwitch(switches::kForceCompositingMode))
return true;
if (IsForceCompositingModeBlacklisted())
return false;
base::FieldTrial* trial =
base::FieldTrialList::Find(kGpuCompositingFieldTrialName);
// Force compositing is enabled in both the force compositing
// and threaded compositing mode field trials.
return trial &&
(trial->group_name() ==
kGpuCompositingFieldTrialForceCompositingEnabledName ||
trial->group_name() == kGpuCompositingFieldTrialThreadEnabledName);
}
} // namespace content
|
