reveman@chromium.org | b5641b9 | 2014-02-15 14:21:58 | [diff] [blame] | 1 | // Copyright 2014 The Chromium 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 | |
prashant.n | b4d4f49 | 2016-04-29 12:51:28 | [diff] [blame] | 5 | #include "cc/raster/gpu_raster_buffer_provider.h" |
reveman@chromium.org | b5641b9 | 2014-02-15 14:21:58 | [diff] [blame] | 6 | |
avi | 02a4d17 | 2015-12-21 06:14:36 | [diff] [blame] | 7 | #include <stdint.h> |
| 8 | |
ernstm | 69fedbd | 2014-09-18 01:23:41 | [diff] [blame] | 9 | #include <algorithm> |
| 10 | |
avi | 02a4d17 | 2015-12-21 06:14:36 | [diff] [blame] | 11 | #include "base/macros.h" |
danakj | 60bc3bc | 2016-04-09 00:24:48 | [diff] [blame] | 12 | #include "base/memory/ptr_util.h" |
ericrk | e402731 | 2016-06-30 00:12:42 | [diff] [blame] | 13 | #include "base/metrics/histogram_macros.h" |
ssid | 904ce3b | 2015-01-27 15:20:16 | [diff] [blame] | 14 | #include "base/trace_event/trace_event.h" |
ericrk | c7c9e3f | 2016-07-01 17:30:16 | [diff] [blame] | 15 | #include "cc/base/histograms.h" |
enne | 5a963036 | 2017-02-24 23:41:03 | [diff] [blame] | 16 | #include "cc/paint/paint_canvas.h" |
chrishtr | ac41ff9 | 2017-03-17 05:07:30 | [diff] [blame] | 17 | #include "cc/raster/image_hijack_canvas.h" |
| 18 | #include "cc/raster/raster_source.h" |
danakj | 92015685 | 2015-05-18 20:22:29 | [diff] [blame] | 19 | #include "cc/raster/scoped_gpu_raster.h" |
reveman@chromium.org | b5641b9 | 2014-02-15 14:21:58 | [diff] [blame] | 20 | #include "cc/resources/resource.h" |
ericrk | 7f6a27f | 2017-01-31 22:34:32 | [diff] [blame] | 21 | #include "gpu/command_buffer/client/context_support.h" |
reveman@chromium.org | b5641b9 | 2014-02-15 14:21:58 | [diff] [blame] | 22 | #include "gpu/command_buffer/client/gles2_interface.h" |
hendrikw | 04cea97 | 2014-09-23 20:50:53 | [diff] [blame] | 23 | #include "third_party/skia/include/core/SkMultiPictureDraw.h" |
| 24 | #include "third_party/skia/include/core/SkPictureRecorder.h" |
reveman | 47560ab | 2014-09-18 19:39:21 | [diff] [blame] | 25 | #include "third_party/skia/include/core/SkSurface.h" |
reveman@chromium.org | b5641b9 | 2014-02-15 14:21:58 | [diff] [blame] | 26 | #include "third_party/skia/include/gpu/GrContext.h" |
| 27 | |
| 28 | namespace cc { |
reveman | 47560ab | 2014-09-18 19:39:21 | [diff] [blame] | 29 | namespace { |
| 30 | |
vmiura | f7c765c | 2016-12-03 21:02:32 | [diff] [blame] | 31 | static void RasterizeSource( |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 32 | const RasterSource* raster_source, |
| 33 | bool resource_has_previous_content, |
| 34 | const gfx::Size& resource_size, |
| 35 | const gfx::Rect& raster_full_rect, |
| 36 | const gfx::Rect& raster_dirty_rect, |
trchen | 178ac91 | 2017-04-04 10:11:10 | [diff] [blame^] | 37 | const gfx::AxisTransform2d& transform, |
vmiura | f7c765c | 2016-12-03 21:02:32 | [diff] [blame] | 38 | const RasterSource::PlaybackSettings& playback_settings, |
| 39 | ContextProvider* context_provider, |
| 40 | ResourceProvider::ScopedWriteLockGL* resource_lock, |
| 41 | bool async_worker_context_enabled, |
| 42 | bool use_distance_field_text, |
| 43 | int msaa_sample_count) { |
| 44 | ScopedGpuRaster gpu_raster(context_provider); |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 45 | |
vmiura | f7c765c | 2016-12-03 21:02:32 | [diff] [blame] | 46 | ResourceProvider::ScopedSkSurfaceProvider scoped_surface( |
| 47 | context_provider, resource_lock, async_worker_context_enabled, |
| 48 | use_distance_field_text, raster_source->CanUseLCDText(), |
ccameron | 76f24f0 | 2017-02-23 05:24:44 | [diff] [blame] | 49 | msaa_sample_count); |
vmiura | f7c765c | 2016-12-03 21:02:32 | [diff] [blame] | 50 | SkSurface* sk_surface = scoped_surface.sk_surface(); |
| 51 | // Allocating an SkSurface will fail after a lost context. Pretend we |
| 52 | // rasterized, as the contents of the resource don't matter anymore. |
ccameron | 22094236 | 2017-02-06 20:29:19 | [diff] [blame] | 53 | if (!sk_surface) { |
| 54 | DLOG(ERROR) << "Failed to allocate raster surface"; |
vmiura | f7c765c | 2016-12-03 21:02:32 | [diff] [blame] | 55 | return; |
ccameron | 22094236 | 2017-02-06 20:29:19 | [diff] [blame] | 56 | } |
vmiura | f7c765c | 2016-12-03 21:02:32 | [diff] [blame] | 57 | |
| 58 | // Playback |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 59 | gfx::Rect playback_rect = raster_full_rect; |
| 60 | if (resource_has_previous_content) { |
| 61 | playback_rect.Intersect(raster_dirty_rect); |
danakj | 05d6900 | 2015-06-02 01:42:20 | [diff] [blame] | 62 | } |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 63 | DCHECK(!playback_rect.IsEmpty()) |
| 64 | << "Why are we rastering a tile that's not dirty?"; |
reveman | 47560ab | 2014-09-18 19:39:21 | [diff] [blame] | 65 | |
ericrk | e402731 | 2016-06-30 00:12:42 | [diff] [blame] | 66 | // Log a histogram of the percentage of pixels that were saved due to |
| 67 | // partial raster. |
ericrk | c7c9e3f | 2016-07-01 17:30:16 | [diff] [blame] | 68 | const char* client_name = GetClientNameForMetrics(); |
ericrk | e402731 | 2016-06-30 00:12:42 | [diff] [blame] | 69 | float full_rect_size = raster_full_rect.size().GetArea(); |
ericrk | c7c9e3f | 2016-07-01 17:30:16 | [diff] [blame] | 70 | if (full_rect_size > 0 && client_name) { |
ericrk | e402731 | 2016-06-30 00:12:42 | [diff] [blame] | 71 | float fraction_partial_rastered = |
| 72 | static_cast<float>(playback_rect.size().GetArea()) / full_rect_size; |
| 73 | float fraction_saved = 1.0f - fraction_partial_rastered; |
ericrk | c7c9e3f | 2016-07-01 17:30:16 | [diff] [blame] | 74 | UMA_HISTOGRAM_PERCENTAGE( |
| 75 | base::StringPrintf("Renderer4.%s.PartialRasterPercentageSaved.Gpu", |
| 76 | client_name), |
| 77 | 100.0f * fraction_saved); |
ericrk | e402731 | 2016-06-30 00:12:42 | [diff] [blame] | 78 | } |
| 79 | |
ccameron | 1f9a366 | 2017-03-17 00:43:06 | [diff] [blame] | 80 | raster_source->PlaybackToCanvas( |
| 81 | sk_surface->getCanvas(), resource_lock->color_space_for_raster(), |
trchen | 178ac91 | 2017-04-04 10:11:10 | [diff] [blame^] | 82 | raster_full_rect, playback_rect, transform, playback_settings); |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 83 | } |
reveman | 47560ab | 2014-09-18 19:39:21 | [diff] [blame] | 84 | |
| 85 | } // namespace |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 86 | |
| 87 | GpuRasterBufferProvider::RasterBufferImpl::RasterBufferImpl( |
| 88 | GpuRasterBufferProvider* client, |
| 89 | ResourceProvider* resource_provider, |
| 90 | ResourceId resource_id, |
| 91 | bool async_worker_context_enabled, |
| 92 | bool resource_has_previous_content) |
| 93 | : client_(client), |
| 94 | lock_(resource_provider, resource_id, async_worker_context_enabled), |
| 95 | resource_has_previous_content_(resource_has_previous_content) { |
| 96 | client_->pending_raster_buffers_.insert(this); |
| 97 | } |
| 98 | |
| 99 | GpuRasterBufferProvider::RasterBufferImpl::~RasterBufferImpl() { |
| 100 | client_->pending_raster_buffers_.erase(this); |
| 101 | } |
| 102 | |
| 103 | void GpuRasterBufferProvider::RasterBufferImpl::Playback( |
| 104 | const RasterSource* raster_source, |
| 105 | const gfx::Rect& raster_full_rect, |
| 106 | const gfx::Rect& raster_dirty_rect, |
| 107 | uint64_t new_content_id, |
trchen | 178ac91 | 2017-04-04 10:11:10 | [diff] [blame^] | 108 | const gfx::AxisTransform2d& transform, |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 109 | const RasterSource::PlaybackSettings& playback_settings) { |
| 110 | TRACE_EVENT0("cc", "GpuRasterBuffer::Playback"); |
| 111 | client_->PlaybackOnWorkerThread(&lock_, sync_token_, |
| 112 | resource_has_previous_content_, raster_source, |
| 113 | raster_full_rect, raster_dirty_rect, |
trchen | 178ac91 | 2017-04-04 10:11:10 | [diff] [blame^] | 114 | new_content_id, transform, playback_settings); |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 115 | } |
vmiura | 78b6928 | 2015-02-14 00:01:17 | [diff] [blame] | 116 | |
prashant.n | b4d4f49 | 2016-04-29 12:51:28 | [diff] [blame] | 117 | GpuRasterBufferProvider::GpuRasterBufferProvider( |
danakj | 0de0c95a | 2016-05-25 01:42:49 | [diff] [blame] | 118 | ContextProvider* compositor_context_provider, |
| 119 | ContextProvider* worker_context_provider, |
hendrikw | 59d44948 | 2015-04-04 00:44:32 | [diff] [blame] | 120 | ResourceProvider* resource_provider, |
| 121 | bool use_distance_field_text, |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 122 | int gpu_rasterization_msaa_sample_count, |
ericrk | d03c005d | 2017-03-24 18:48:52 | [diff] [blame] | 123 | ResourceFormat preferred_tile_format, |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 124 | bool async_worker_context_enabled) |
danakj | 0de0c95a | 2016-05-25 01:42:49 | [diff] [blame] | 125 | : compositor_context_provider_(compositor_context_provider), |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 126 | worker_context_provider_(worker_context_provider), |
| 127 | resource_provider_(resource_provider), |
| 128 | use_distance_field_text_(use_distance_field_text), |
| 129 | msaa_sample_count_(gpu_rasterization_msaa_sample_count), |
ericrk | d03c005d | 2017-03-24 18:48:52 | [diff] [blame] | 130 | preferred_tile_format_(preferred_tile_format), |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 131 | async_worker_context_enabled_(async_worker_context_enabled) { |
| 132 | DCHECK(compositor_context_provider); |
| 133 | DCHECK(worker_context_provider); |
danakj | 0de0c95a | 2016-05-25 01:42:49 | [diff] [blame] | 134 | } |
reveman@chromium.org | b5641b9 | 2014-02-15 14:21:58 | [diff] [blame] | 135 | |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 136 | GpuRasterBufferProvider::~GpuRasterBufferProvider() { |
| 137 | DCHECK(pending_raster_buffers_.empty()); |
| 138 | } |
reveman@chromium.org | ec7541d | 2014-04-09 01:23:53 | [diff] [blame] | 139 | |
prashant.n | b4d4f49 | 2016-04-29 12:51:28 | [diff] [blame] | 140 | std::unique_ptr<RasterBuffer> GpuRasterBufferProvider::AcquireBufferForRaster( |
danakj | e0b5478 | 2015-05-29 22:47:52 | [diff] [blame] | 141 | const Resource* resource, |
danakj | 510822aa | 2015-06-01 20:23:02 | [diff] [blame] | 142 | uint64_t resource_content_id, |
danakj | e0b5478 | 2015-05-29 22:47:52 | [diff] [blame] | 143 | uint64_t previous_content_id) { |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 144 | bool resource_has_previous_content = |
| 145 | resource_content_id && resource_content_id == previous_content_id; |
ricea | da4bffb6e | 2016-08-22 05:28:17 | [diff] [blame] | 146 | return base::MakeUnique<RasterBufferImpl>( |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 147 | this, resource_provider_, resource->id(), async_worker_context_enabled_, |
ricea | da4bffb6e | 2016-08-22 05:28:17 | [diff] [blame] | 148 | resource_has_previous_content); |
reveman@chromium.org | b5641b9 | 2014-02-15 14:21:58 | [diff] [blame] | 149 | } |
| 150 | |
prashant.n | b4d4f49 | 2016-04-29 12:51:28 | [diff] [blame] | 151 | void GpuRasterBufferProvider::ReleaseBufferForRaster( |
danakj | 60bc3bc | 2016-04-09 00:24:48 | [diff] [blame] | 152 | std::unique_ptr<RasterBuffer> buffer) { |
reveman | 47560ab | 2014-09-18 19:39:21 | [diff] [blame] | 153 | // Nothing to do here. RasterBufferImpl destructor cleans up after itself. |
reveman@chromium.org | b5641b9 | 2014-02-15 14:21:58 | [diff] [blame] | 154 | } |
| 155 | |
sunnyps | 12074d3d | 2016-06-21 01:57:48 | [diff] [blame] | 156 | void GpuRasterBufferProvider::OrderingBarrier() { |
prashant.n | b4d4f49 | 2016-04-29 12:51:28 | [diff] [blame] | 157 | TRACE_EVENT0("cc", "GpuRasterBufferProvider::OrderingBarrier"); |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 158 | |
| 159 | gpu::gles2::GLES2Interface* gl = compositor_context_provider_->ContextGL(); |
| 160 | if (async_worker_context_enabled_) { |
| 161 | GLuint64 fence = gl->InsertFenceSyncCHROMIUM(); |
| 162 | gl->OrderingBarrierCHROMIUM(); |
| 163 | |
| 164 | gpu::SyncToken sync_token; |
| 165 | gl->GenUnverifiedSyncTokenCHROMIUM(fence, sync_token.GetData()); |
| 166 | |
| 167 | DCHECK(sync_token.HasData() || |
| 168 | gl->GetGraphicsResetStatusKHR() != GL_NO_ERROR); |
| 169 | |
| 170 | for (RasterBufferImpl* buffer : pending_raster_buffers_) |
| 171 | buffer->set_sync_token(sync_token); |
| 172 | } else { |
| 173 | gl->OrderingBarrierCHROMIUM(); |
| 174 | } |
| 175 | pending_raster_buffers_.clear(); |
prashant.n | b4d4f49 | 2016-04-29 12:51:28 | [diff] [blame] | 176 | } |
| 177 | |
| 178 | ResourceFormat GpuRasterBufferProvider::GetResourceFormat( |
| 179 | bool must_support_alpha) const { |
ericrk | d03c005d | 2017-03-24 18:48:52 | [diff] [blame] | 180 | if (resource_provider_->IsRenderBufferFormatSupported( |
| 181 | preferred_tile_format_) && |
| 182 | (DoesResourceFormatSupportAlpha(preferred_tile_format_) || |
| 183 | !must_support_alpha)) { |
| 184 | return preferred_tile_format_; |
| 185 | } |
| 186 | |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 187 | return resource_provider_->best_render_buffer_format(); |
prashant.n | b4d4f49 | 2016-04-29 12:51:28 | [diff] [blame] | 188 | } |
| 189 | |
ericrk | eeda5899 | 2016-07-07 02:34:27 | [diff] [blame] | 190 | bool GpuRasterBufferProvider::IsResourceSwizzleRequired( |
prashant.n | b4d4f49 | 2016-04-29 12:51:28 | [diff] [blame] | 191 | bool must_support_alpha) const { |
| 192 | // This doesn't require a swizzle because we rasterize to the correct format. |
| 193 | return false; |
| 194 | } |
| 195 | |
ericrk | 5ac42f32 | 2016-07-14 01:06:51 | [diff] [blame] | 196 | bool GpuRasterBufferProvider::CanPartialRasterIntoProvidedResource() const { |
ericrk | c9ed083 | 2016-07-20 19:42:50 | [diff] [blame] | 197 | // Partial raster doesn't support MSAA, as the MSAA resolve is unaware of clip |
| 198 | // rects. |
| 199 | // TODO(crbug.com/629683): See if we can work around this limitation. |
| 200 | return msaa_sample_count_ == 0; |
ericrk | eeda5899 | 2016-07-07 02:34:27 | [diff] [blame] | 201 | } |
| 202 | |
ericrk | 7f6a27f | 2017-01-31 22:34:32 | [diff] [blame] | 203 | bool GpuRasterBufferProvider::IsResourceReadyToDraw( |
| 204 | ResourceId resource_id) const { |
| 205 | if (!async_worker_context_enabled_) |
| 206 | return true; |
| 207 | |
ericrk | 7f6a27f | 2017-01-31 22:34:32 | [diff] [blame] | 208 | gpu::SyncToken sync_token = |
ericrk | 6d7564a | 2017-02-02 23:55:58 | [diff] [blame] | 209 | resource_provider_->GetSyncTokenForResources({resource_id}); |
ericrk | 7f6a27f | 2017-01-31 22:34:32 | [diff] [blame] | 210 | if (!sync_token.HasData()) |
| 211 | return true; |
| 212 | |
sunnyps | 7499629 | 2017-03-15 02:35:48 | [diff] [blame] | 213 | // IsSyncTokenSignaled is thread-safe, no need for worker context lock. |
| 214 | return worker_context_provider_->ContextSupport()->IsSyncTokenSignaled( |
ericrk | 7f6a27f | 2017-01-31 22:34:32 | [diff] [blame] | 215 | sync_token); |
| 216 | } |
| 217 | |
| 218 | uint64_t GpuRasterBufferProvider::SetReadyToDrawCallback( |
| 219 | const ResourceProvider::ResourceIdArray& resource_ids, |
| 220 | const base::Closure& callback, |
| 221 | uint64_t pending_callback_id) const { |
| 222 | if (!async_worker_context_enabled_) |
| 223 | return 0; |
| 224 | |
| 225 | gpu::SyncToken sync_token = |
| 226 | resource_provider_->GetSyncTokenForResources(resource_ids); |
| 227 | uint64_t callback_id = sync_token.release_count(); |
| 228 | DCHECK_NE(callback_id, 0u); |
| 229 | |
| 230 | // If the callback is different from the one the caller is already waiting on, |
sunnyps | 31c92fe | 2017-02-10 23:46:55 | [diff] [blame] | 231 | // pass the callback through to SignalSyncToken. Otherwise the request is |
ericrk | 7f6a27f | 2017-01-31 22:34:32 | [diff] [blame] | 232 | // redundant. |
| 233 | if (callback_id != pending_callback_id) { |
sunnyps | 31c92fe | 2017-02-10 23:46:55 | [diff] [blame] | 234 | // Use the compositor context because we want this callback on the impl |
| 235 | // thread. |
| 236 | compositor_context_provider_->ContextSupport()->SignalSyncToken(sync_token, |
| 237 | callback); |
ericrk | 7f6a27f | 2017-01-31 22:34:32 | [diff] [blame] | 238 | } |
| 239 | |
| 240 | return callback_id; |
| 241 | } |
| 242 | |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 243 | void GpuRasterBufferProvider::Shutdown() { |
| 244 | pending_raster_buffers_.clear(); |
| 245 | } |
| 246 | |
| 247 | void GpuRasterBufferProvider::PlaybackOnWorkerThread( |
| 248 | ResourceProvider::ScopedWriteLockGL* resource_lock, |
| 249 | const gpu::SyncToken& sync_token, |
| 250 | bool resource_has_previous_content, |
| 251 | const RasterSource* raster_source, |
| 252 | const gfx::Rect& raster_full_rect, |
| 253 | const gfx::Rect& raster_dirty_rect, |
| 254 | uint64_t new_content_id, |
trchen | 178ac91 | 2017-04-04 10:11:10 | [diff] [blame^] | 255 | const gfx::AxisTransform2d& transform, |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 256 | const RasterSource::PlaybackSettings& playback_settings) { |
| 257 | ContextProvider::ScopedContextLock scoped_context(worker_context_provider_); |
| 258 | gpu::gles2::GLES2Interface* gl = scoped_context.ContextGL(); |
| 259 | DCHECK(gl); |
| 260 | |
| 261 | if (async_worker_context_enabled_) { |
| 262 | // Early out if sync token is invalid. This happens if the compositor |
| 263 | // context was lost before ScheduleTasks was called. |
| 264 | if (!sync_token.HasData()) |
| 265 | return; |
| 266 | // Synchronize with compositor. |
| 267 | gl->WaitSyncTokenCHROMIUM(sync_token.GetConstData()); |
| 268 | } |
| 269 | |
vmiura | f7c765c | 2016-12-03 21:02:32 | [diff] [blame] | 270 | RasterizeSource(raster_source, resource_has_previous_content, |
| 271 | resource_lock->size(), raster_full_rect, raster_dirty_rect, |
trchen | 178ac91 | 2017-04-04 10:11:10 | [diff] [blame^] | 272 | transform, playback_settings, worker_context_provider_, |
vmiura | f7c765c | 2016-12-03 21:02:32 | [diff] [blame] | 273 | resource_lock, async_worker_context_enabled_, |
ericrk | b04a4a6 | 2017-01-03 20:48:08 | [diff] [blame] | 274 | use_distance_field_text_, msaa_sample_count_); |
sunnyps | 5d6ff0d0 | 2016-06-28 00:40:11 | [diff] [blame] | 275 | |
| 276 | const uint64_t fence_sync = gl->InsertFenceSyncCHROMIUM(); |
| 277 | |
| 278 | // Barrier to sync worker context output to cc context. |
| 279 | gl->OrderingBarrierCHROMIUM(); |
| 280 | |
| 281 | // Generate sync token after the barrier for cross context synchronization. |
| 282 | gpu::SyncToken resource_sync_token; |
| 283 | gl->GenUnverifiedSyncTokenCHROMIUM(fence_sync, resource_sync_token.GetData()); |
| 284 | resource_lock->set_sync_token(resource_sync_token); |
| 285 | resource_lock->set_synchronized(!async_worker_context_enabled_); |
| 286 | } |
prashant.n | b4d4f49 | 2016-04-29 12:51:28 | [diff] [blame] | 287 | |
reveman@chromium.org | b5641b9 | 2014-02-15 14:21:58 | [diff] [blame] | 288 | } // namespace cc |