blob: 470e6e033548a6fdd89fc8c546f8ca481ca2535c [file] [log] [blame]
// 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/raster/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,
const gfx::AxisTransform2d& transform,
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, transform,
lock_.color_space_for_raster(), 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::IsResourceSwizzleRequired(
bool must_support_alpha) const {
return ResourceFormatRequiresSwizzle(GetResourceFormat(must_support_alpha));
}
bool BitmapRasterBufferProvider::CanPartialRasterIntoProvidedResource() const {
return true;
}
bool BitmapRasterBufferProvider::IsResourceReadyToDraw(
ResourceId resource_id) const {
// Bitmap resources are immediately ready to draw.
return true;
}
uint64_t BitmapRasterBufferProvider::SetReadyToDrawCallback(
const ResourceProvider::ResourceIdArray& resource_ids,
const base::Closure& callback,
uint64_t pending_callback_id) const {
// Bitmap resources are immediately ready to draw.
return 0;
}
void BitmapRasterBufferProvider::Shutdown() {}
} // namespace cc