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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/public/browser/compositor_util.h" | 5 #include "content/public/browser/compositor_util.h" |
6 | 6 |
7 #include "base/command_line.h" | 7 #include "base/command_line.h" |
8 #include "base/metrics/field_trial.h" | 8 #include "base/metrics/field_trial.h" |
9 #include "content/public/browser/gpu_data_manager.h" | 9 #include "content/public/browser/gpu_data_manager.h" |
10 #include "content/public/common/content_constants.h" | 10 #include "content/public/common/content_constants.h" |
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40 | 40 |
41 bool IsThreadedCompositingEnabled() { | 41 bool IsThreadedCompositingEnabled() { |
42 #if defined(OS_WIN) && defined(USE_AURA) | 42 #if defined(OS_WIN) && defined(USE_AURA) |
43 // We always want compositing on Aura Windows. | 43 // We always want compositing on Aura Windows. |
44 return true; | 44 return true; |
45 #endif | 45 #endif |
46 | 46 |
47 if (!CanDoAcceleratedCompositing()) | 47 if (!CanDoAcceleratedCompositing()) |
48 return false; | 48 return false; |
49 | 49 |
50 const GpuDataManager* gpu_data_manager = GpuDataManager::GetInstance(); | |
51 GpuFeatureType blacklisted_features = | |
52 gpu_data_manager->GetBlacklistedFeatures(); | |
53 // Disallow threaded compositing when texture sharing is blacklisted since | |
54 // this triggers renderer-side readbacks for the thumbnailer / extensions. | |
55 // http://crbug.com/158747 | |
56 if (blacklisted_features & GPU_FEATURE_TYPE_TEXTURE_SHARING) | |
57 return false; | |
58 | |
59 const CommandLine& command_line = *CommandLine::ForCurrentProcess(); | 50 const CommandLine& command_line = *CommandLine::ForCurrentProcess(); |
60 | 51 |
61 // Command line switches take precedence over field trials. | 52 // Command line switches take precedence over field trials. |
62 if (command_line.HasSwitch(switches::kDisableForceCompositingMode) || | 53 if (command_line.HasSwitch(switches::kDisableForceCompositingMode) || |
63 command_line.HasSwitch(switches::kDisableThreadedCompositing)) | 54 command_line.HasSwitch(switches::kDisableThreadedCompositing)) |
64 return false; | 55 return false; |
65 | 56 |
66 if (command_line.HasSwitch(switches::kEnableThreadedCompositing)) | 57 if (command_line.HasSwitch(switches::kEnableThreadedCompositing)) |
67 return true; | 58 return true; |
68 | 59 |
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95 | 86 |
96 // Force compositing is enabled in both the force compositing | 87 // Force compositing is enabled in both the force compositing |
97 // and threaded compositing mode field trials. | 88 // and threaded compositing mode field trials. |
98 return trial && | 89 return trial && |
99 (trial->group_name() == | 90 (trial->group_name() == |
100 kGpuCompositingFieldTrialForceCompositingEnabledName || | 91 kGpuCompositingFieldTrialForceCompositingEnabledName || |
101 trial->group_name() == kGpuCompositingFieldTrialThreadEnabledName); | 92 trial->group_name() == kGpuCompositingFieldTrialThreadEnabledName); |
102 } | 93 } |
103 | 94 |
104 } // namespace content | 95 } // namespace content |
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