| Index: components/viz/client/local_surface_id_provider.cc
|
| diff --git a/components/viz/client/local_surface_id_provider.cc b/components/viz/client/local_surface_id_provider.cc
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..caf3ca96063dc403abdb808a16a8823ba87b3bc1
|
| --- /dev/null
|
| +++ b/components/viz/client/local_surface_id_provider.cc
|
| @@ -0,0 +1,29 @@
|
| +// Copyright 2017 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 "components/viz/client/local_surface_id_provider.h"
|
| +#include "cc/output/compositor_frame.h"
|
| +
|
| +namespace viz {
|
| +
|
| +LocalSurfaceIdProvider::LocalSurfaceIdProvider() = default;
|
| +
|
| +LocalSurfaceIdProvider::~LocalSurfaceIdProvider() = default;
|
| +
|
| +DefaultLocalSurfaceIdProvider::DefaultLocalSurfaceIdProvider() = default;
|
| +
|
| +const cc::LocalSurfaceId&
|
| +DefaultLocalSurfaceIdProvider::GetLocalSurfaceIdForFrame(
|
| + const cc::CompositorFrame& frame) {
|
| + gfx::Size frame_size = frame.render_pass_list.back()->output_rect.size();
|
| + if (!local_surface_id_.is_valid() || surface_size_ != frame_size ||
|
| + frame.metadata.device_scale_factor != device_scale_factor_) {
|
| + local_surface_id_ = local_surface_id_allocator_.GenerateId();
|
| + }
|
| + surface_size_ = frame_size;
|
| + device_scale_factor_ = frame.metadata.device_scale_factor;
|
| + return local_surface_id_;
|
| +}
|
| +
|
| +} // namespace viz
|
|
|