| // 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/raster/bitmap_raster_buffer_provider.h" |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include <algorithm> |
| |
| #include "base/macros.h" |
| #include "base/memory/ptr_util.h" |
| #include "base/strings/stringprintf.h" |
| #include "base/trace_event/trace_event.h" |
| #include "base/trace_event/trace_event_argument.h" |
| #include "cc/debug/traced_value.h" |
| #include "cc/playback/raster_source.h" |
| #include "cc/resources/platform_color.h" |
| #include "cc/resources/resource.h" |
| |
| namespace cc { |
| namespace { |
| |
| class RasterBufferImpl : public RasterBuffer { |
| public: |
| RasterBufferImpl(ResourceProvider* resource_provider, |
| const Resource* resource, |
| uint64_t resource_content_id, |
| uint64_t previous_content_id) |
| : lock_(resource_provider, resource->id()), |
| resource_(resource), |
| resource_has_previous_content_( |
| resource_content_id && resource_content_id == previous_content_id) { |
| } |
| |
| // Overridden from RasterBuffer: |
| void Playback( |
| const RasterSource* raster_source, |
| const gfx::Rect& raster_full_rect, |
| const gfx::Rect& raster_dirty_rect, |
| uint64_t new_content_id, |
| float scale, |
| const RasterSource::PlaybackSettings& playback_settings) override { |
| TRACE_EVENT0("cc", "BitmapRasterBuffer::Playback"); |
| gfx::Rect playback_rect = raster_full_rect; |
| if (resource_has_previous_content_) { |
| playback_rect.Intersect(raster_dirty_rect); |
| } |
| DCHECK(!playback_rect.IsEmpty()) |
| << "Why are we rastering a tile that's not dirty?"; |
| |
| size_t stride = 0u; |
| RasterBufferProvider::PlaybackToMemory( |
| lock_.sk_bitmap().getPixels(), resource_->format(), resource_->size(), |
| stride, raster_source, raster_full_rect, playback_rect, scale, |
| playback_settings); |
| } |
| |
| private: |
| ResourceProvider::ScopedWriteLockSoftware lock_; |
| const Resource* resource_; |
| bool resource_has_previous_content_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RasterBufferImpl); |
| }; |
| |
| } // namespace |
| |
| // static |
| std::unique_ptr<RasterBufferProvider> BitmapRasterBufferProvider::Create( |
| ResourceProvider* resource_provider) { |
| return base::WrapUnique<RasterBufferProvider>( |
| new BitmapRasterBufferProvider(resource_provider)); |
| } |
| |
| BitmapRasterBufferProvider::BitmapRasterBufferProvider( |
| ResourceProvider* resource_provider) |
| : resource_provider_(resource_provider) {} |
| |
| BitmapRasterBufferProvider::~BitmapRasterBufferProvider() {} |
| |
| std::unique_ptr<RasterBuffer> |
| BitmapRasterBufferProvider::AcquireBufferForRaster( |
| const Resource* resource, |
| uint64_t resource_content_id, |
| uint64_t previous_content_id) { |
| return std::unique_ptr<RasterBuffer>(new RasterBufferImpl( |
| resource_provider_, resource, resource_content_id, previous_content_id)); |
| } |
| |
| void BitmapRasterBufferProvider::ReleaseBufferForRaster( |
| std::unique_ptr<RasterBuffer> buffer) { |
| // Nothing to do here. RasterBufferImpl destructor cleans up after itself. |
| } |
| |
| void BitmapRasterBufferProvider::OrderingBarrier() { |
| // No need to sync resources as this provider does not use GL context. |
| } |
| |
| ResourceFormat BitmapRasterBufferProvider::GetResourceFormat( |
| bool must_support_alpha) const { |
| return resource_provider_->best_texture_format(); |
| } |
| |
| bool BitmapRasterBufferProvider::GetResourceRequiresSwizzle( |
| bool must_support_alpha) const { |
| return ResourceFormatRequiresSwizzle(GetResourceFormat(must_support_alpha)); |
| } |
| |
| void BitmapRasterBufferProvider::Shutdown() {} |
| |
| } // namespace cc |