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// 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 "content/browser/compositor/gpu_browser_compositor_output_surface.h"
#include <utility>
#include "build/build_config.h"
#include "cc/output/compositor_frame.h"
#include "cc/output/output_surface_client.h"
#include "content/browser/compositor/browser_compositor_overlay_candidate_validator.h"
#include "content/browser/compositor/reflector_impl.h"
#include "content/browser/compositor/reflector_texture.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/common/gpu/client/context_provider_command_buffer.h"
#include "gpu/command_buffer/client/context_support.h"
namespace content {
GpuBrowserCompositorOutputSurface::GpuBrowserCompositorOutputSurface(
const scoped_refptr<ContextProviderCommandBuffer>& context,
const scoped_refptr<ContextProviderCommandBuffer>& worker_context,
const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
scoped_ptr<BrowserCompositorOverlayCandidateValidator>
overlay_candidate_validator)
: BrowserCompositorOutputSurface(context,
worker_context,
vsync_manager,
std::move(overlay_candidate_validator)),
#if defined(OS_MACOSX)
should_show_frames_state_(SHOULD_SHOW_FRAMES),
#endif
swap_buffers_completion_callback_(base::Bind(
&GpuBrowserCompositorOutputSurface::OnGpuSwapBuffersCompleted,
base::Unretained(this))),
update_vsync_parameters_callback_(base::Bind(
&BrowserCompositorOutputSurface::OnUpdateVSyncParametersFromGpu,
base::Unretained(this))) {
}
GpuBrowserCompositorOutputSurface::~GpuBrowserCompositorOutputSurface() {}
CommandBufferProxyImpl*
GpuBrowserCompositorOutputSurface::GetCommandBufferProxy() {
ContextProviderCommandBuffer* provider_command_buffer =
static_cast<content::ContextProviderCommandBuffer*>(
context_provider_.get());
CommandBufferProxyImpl* command_buffer_proxy =
provider_command_buffer->GetCommandBufferProxy();
DCHECK(command_buffer_proxy);
return command_buffer_proxy;
}
bool GpuBrowserCompositorOutputSurface::BindToClient(
cc::OutputSurfaceClient* client) {
if (!BrowserCompositorOutputSurface::BindToClient(client))
return false;
GetCommandBufferProxy()->SetSwapBuffersCompletionCallback(
swap_buffers_completion_callback_.callback());
GetCommandBufferProxy()->SetUpdateVSyncParametersCallback(
update_vsync_parameters_callback_.callback());
if (capabilities_.uses_default_gl_framebuffer) {
capabilities_.flipped_output_surface =
context_provider()->ContextCapabilities().gpu.flips_vertically;
}
return true;
}
void GpuBrowserCompositorOutputSurface::OnReflectorChanged() {
if (!reflector_) {
reflector_texture_.reset();
} else {
reflector_texture_.reset(new ReflectorTexture(context_provider()));
reflector_->OnSourceTextureMailboxUpdated(reflector_texture_->mailbox());
}
}
void GpuBrowserCompositorOutputSurface::SwapBuffers(
cc::CompositorFrame* frame) {
DCHECK(frame->gl_frame_data);
GetCommandBufferProxy()->SetLatencyInfo(frame->metadata.latency_info);
if (reflector_) {
if (frame->gl_frame_data->sub_buffer_rect ==
gfx::Rect(frame->gl_frame_data->size)) {
reflector_texture_->CopyTextureFullImage(SurfaceSize());
reflector_->OnSourceSwapBuffers();
} else {
const gfx::Rect& rect = frame->gl_frame_data->sub_buffer_rect;
reflector_texture_->CopyTextureSubImage(rect);
reflector_->OnSourcePostSubBuffer(rect);
}
}
if (frame->gl_frame_data->sub_buffer_rect ==
gfx::Rect(frame->gl_frame_data->size)) {
context_provider_->ContextSupport()->Swap();
} else {
context_provider_->ContextSupport()->PartialSwapBuffers(
frame->gl_frame_data->sub_buffer_rect);
}
client_->DidSwapBuffers();
#if defined(OS_MACOSX)
if (should_show_frames_state_ ==
SHOULD_NOT_SHOW_FRAMES_NO_SWAP_AFTER_SUSPENDED) {
should_show_frames_state_ = SHOULD_SHOW_FRAMES;
}
#endif
}
void GpuBrowserCompositorOutputSurface::OnGpuSwapBuffersCompleted(
const std::vector<ui::LatencyInfo>& latency_info,
gfx::SwapResult result) {
RenderWidgetHostImpl::CompositorFrameDrawn(latency_info);
OnSwapBuffersComplete();
}
#if defined(OS_MACOSX)
void GpuBrowserCompositorOutputSurface::SetSurfaceSuspendedForRecycle(
bool suspended) {
if (suspended) {
// It may be that there are frames in-flight from the GPU process back to
// the browser. Make sure that these frames are not displayed by ignoring
// them in GpuProcessHostUIShim, until the browser issues a SwapBuffers for
// the new content.
should_show_frames_state_ = SHOULD_NOT_SHOW_FRAMES_SUSPENDED;
} else {
// Discard the backbuffer before drawing the new frame. This is necessary
// only when using a ImageTransportSurfaceFBO with a
// CALayerStorageProvider. Discarding the backbuffer results in the next
// frame using a new CALayer and CAContext, which guarantees that the
// browser will not flash stale content when adding the remote CALayer to
// the NSView hierarchy (it could flash stale content because the system
// window server is not synchronized with any signals we control or
// observe).
if (should_show_frames_state_ == SHOULD_NOT_SHOW_FRAMES_SUSPENDED) {
DiscardBackbuffer();
should_show_frames_state_ =
SHOULD_NOT_SHOW_FRAMES_NO_SWAP_AFTER_SUSPENDED;
}
}
}
bool GpuBrowserCompositorOutputSurface::
SurfaceShouldNotShowFramesAfterSuspendForRecycle() const {
return should_show_frames_state_ != SHOULD_SHOW_FRAMES;
}
#endif
bool GpuBrowserCompositorOutputSurface::SurfaceIsSuspendForRecycle() const {
#if defined(OS_MACOSX)
return should_show_frames_state_ == SHOULD_NOT_SHOW_FRAMES_SUSPENDED;
#else
return false;
#endif
}
} // namespace content
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