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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_surfaceless_browser_compositor_output_surface.h"
#include <utility>
#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/buffer_queue.h"
#include "content/browser/compositor/gl_helper.h"
#include "content/browser/compositor/reflector_impl.h"
#include "content/browser/gpu/gpu_surface_tracker.h"
#include "content/common/gpu/client/context_provider_command_buffer.h"
#include "gpu/GLES2/gl2extchromium.h"
#include "gpu/command_buffer/client/gles2_interface.h"
namespace content {
GpuSurfacelessBrowserCompositorOutputSurface::
GpuSurfacelessBrowserCompositorOutputSurface(
const scoped_refptr<ContextProviderCommandBuffer>& context,
const scoped_refptr<ContextProviderCommandBuffer>& worker_context,
int surface_id,
const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
scoped_ptr<BrowserCompositorOverlayCandidateValidator>
overlay_candidate_validator,
unsigned int target,
unsigned int internalformat,
BrowserGpuMemoryBufferManager* gpu_memory_buffer_manager)
: GpuBrowserCompositorOutputSurface(context,
worker_context,
vsync_manager,
std::move(overlay_candidate_validator)),
internalformat_(internalformat),
gpu_memory_buffer_manager_(gpu_memory_buffer_manager) {
capabilities_.uses_default_gl_framebuffer = false;
capabilities_.flipped_output_surface = true;
// Set |max_frames_pending| to 2 for surfaceless, which aligns scheduling
// more closely with the previous surfaced behavior.
// With a surface, swap buffer ack used to return early, before actually
// presenting the back buffer, enabling the browser compositor to run ahead.
// Surfaceless implementation acks at the time of actual buffer swap, which
// shifts the start of the new frame forward relative to the old
// implementation.
capabilities_.max_frames_pending = 2;
gl_helper_.reset(new GLHelper(context_provider_->ContextGL(),
context_provider_->ContextSupport()));
output_surface_.reset(new BufferQueue(
context_provider_, target, internalformat_, gl_helper_.get(),
gpu_memory_buffer_manager_, surface_id));
output_surface_->Initialize();
}
GpuSurfacelessBrowserCompositorOutputSurface::
~GpuSurfacelessBrowserCompositorOutputSurface() {
}
bool GpuSurfacelessBrowserCompositorOutputSurface::IsDisplayedAsOverlayPlane()
const {
return true;
}
unsigned GpuSurfacelessBrowserCompositorOutputSurface::GetOverlayTextureId()
const {
return output_surface_->current_texture_id();
}
void GpuSurfacelessBrowserCompositorOutputSurface::SwapBuffers(
cc::CompositorFrame* frame) {
DCHECK(output_surface_);
output_surface_->SwapBuffers(frame->gl_frame_data->sub_buffer_rect);
GpuBrowserCompositorOutputSurface::SwapBuffers(frame);
}
void GpuSurfacelessBrowserCompositorOutputSurface::OnSwapBuffersComplete() {
DCHECK(output_surface_);
output_surface_->PageFlipComplete();
GpuBrowserCompositorOutputSurface::OnSwapBuffersComplete();
}
void GpuSurfacelessBrowserCompositorOutputSurface::BindFramebuffer() {
DCHECK(output_surface_);
output_surface_->BindFramebuffer();
}
void GpuSurfacelessBrowserCompositorOutputSurface::Reshape(
const gfx::Size& size,
float scale_factor,
bool alpha) {
GpuBrowserCompositorOutputSurface::Reshape(size, scale_factor, alpha);
DCHECK(output_surface_);
output_surface_->Reshape(SurfaceSize(), scale_factor);
}
void GpuSurfacelessBrowserCompositorOutputSurface::OnGpuSwapBuffersCompleted(
const std::vector<ui::LatencyInfo>& latency_info,
gfx::SwapResult result) {
bool force_swap = false;
if (result == gfx::SwapResult::SWAP_NAK_RECREATE_BUFFERS) {
// Even through the swap failed, this is a fixable error so we can pretend
// it succeeded to the rest of the system.
result = gfx::SwapResult::SWAP_ACK;
output_surface_->RecreateBuffers();
force_swap = true;
}
GpuBrowserCompositorOutputSurface::OnGpuSwapBuffersCompleted(latency_info,
result);
if (force_swap)
client_->SetNeedsRedrawRect(gfx::Rect(SurfaceSize()));
}
} // namespace content
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