content/browser/compositor/mus_browser_compositor_output_surface.cc - chromium/src - Git at Google

 // Copyright 2016 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/mus_browser_compositor_output_surface.h"

 #include <utility>

 #include "cc/output/compositor_frame.h"
 #include "cc/output/output_surface_frame.h"
 #include "cc/quads/render_pass.h"
 #include "cc/quads/texture_draw_quad.h"
 #include "components/display_compositor/compositor_overlay_candidate_validator.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "gpu/ipc/client/command_buffer_proxy_impl.h"
 #include "services/ui/public/cpp/gpu/context_provider_command_buffer.h"
 #include "ui/aura/mus/window_compositor_frame_sink.h"
 #include "ui/aura/mus/window_port_mus.h"
 #include "ui/aura/window.h"
 #include "ui/display/screen.h"
 #include "ui/gfx/geometry/dip_util.h"

 namespace content {

 MusBrowserCompositorOutputSurface::MusBrowserCompositorOutputSurface(
     aura::Window* window,
     scoped_refptr<ui::ContextProviderCommandBuffer> context,
     gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
     const UpdateVSyncParametersCallback& update_vsync_parameters_callback,
     std::unique_ptr<display_compositor::CompositorOverlayCandidateValidator>
         overlay_candidate_validator)
     : GpuBrowserCompositorOutputSurface(std::move(context),
                                         update_vsync_parameters_callback,
                                         std::move(overlay_candidate_validator),
                                         false  /* support_stencil */),
       window_(window),
       begin_frame_source_(nullptr) {
   aura::WindowPortMus* window_port = aura::WindowPortMus::Get(window_);
   DCHECK(window_port);
   compositor_frame_sink_ = window_port->RequestCompositorFrameSink(
       context, gpu_memory_buffer_manager);
   compositor_frame_sink_->BindToClient(this);
 }

 MusBrowserCompositorOutputSurface::~MusBrowserCompositorOutputSurface() {}

 cc::BeginFrameSource* MusBrowserCompositorOutputSurface::GetBeginFrameSource() {
   return begin_frame_source_;
 }

 void MusBrowserCompositorOutputSurface::SwapBuffers(
     cc::OutputSurfaceFrame frame) {
   cc::CompositorFrame ui_frame;
   ui_frame.metadata.device_scale_factor = display::Screen::GetScreen()
                                               ->GetDisplayNearestWindow(window_)
                                               .device_scale_factor();
   ui_frame.metadata.latency_info = std::move(frame.latency_info);
   // Reset latency_info to known empty state after moving contents.
   frame.latency_info.clear();
   const int render_pass_id = 1;
   const gfx::Rect bounds_in_dip = gfx::Rect(window_->bounds().size());
   const gfx::Rect bounds_in_pixels = gfx::ConvertRectToPixel(
       ui_frame.metadata.device_scale_factor, bounds_in_dip);
   std::unique_ptr<cc::RenderPass> pass = cc::RenderPass::Create();
   pass->SetNew(render_pass_id, bounds_in_pixels, bounds_in_pixels,
                gfx::Transform());
   // The SharedQuadState is owned by the SharedQuadStateList
   // shared_quad_state_list.
   cc::SharedQuadState* sqs = pass->CreateAndAppendSharedQuadState();
   sqs->SetAll(gfx::Transform(), bounds_in_pixels.size(), bounds_in_pixels,
               bounds_in_pixels, false /* is_clipped */, 1.f /* opacity */,
               SkBlendMode::kSrc, 0 /* sorting_context_id */);

   cc::TransferableResource resource;
   resource.id = AllocateResourceId();
   resource.format = cc::ResourceFormat::RGBA_8888;
   resource.filter = GL_LINEAR;
   resource.size = frame.size;

   const gpu::Mailbox& mailbox = GetMailboxFromResourceId(resource.id);
   DCHECK(!mailbox.IsZero());
   const gfx::Rect rect(frame.size);

   // Call parent's SwapBuffers to generate the front buffer, and then send the
   // front buffer to mus.
   // TODO(penghuang): we should avoid extra copies here by sending frames to mus
   // directly from renderer.
   GpuBrowserCompositorOutputSurface::SwapBuffers(std::move(frame));
   GetCommandBufferProxy()->TakeFrontBuffer(mailbox);

   auto* gl = context_provider()->ContextGL();
   const GLuint64 fence_sync = gl->InsertFenceSyncCHROMIUM();
   gl->ShallowFlushCHROMIUM();
   gpu::SyncToken sync_token;
   gl->GenSyncTokenCHROMIUM(fence_sync, sync_token.GetData());

   resource.mailbox_holder =
       gpu::MailboxHolder(mailbox, sync_token, GL_TEXTURE_2D);
   resource.read_lock_fences_enabled = false;
   resource.is_software = false;
   resource.is_overlay_candidate = false;
   ui_frame.resource_list.push_back(std::move(resource));

   const bool needs_blending = true;
   const bool premultiplied_alpha = true;
   const gfx::PointF uv_top_left(0.f, 0.f);
   const gfx::PointF uv_bottom_right(1.f, 1.f);
   const uint32_t background_color = 0x00000000;
   const float vertex_opacity[4] = {1.f, 1.f, 1.f, 1.f};
   const bool y_flipped = true;
   const bool nearest_neighbor = false;
   const bool secure_output_only = false;

   cc::TextureDrawQuad* quad =
       pass->CreateAndAppendDrawQuad<cc::TextureDrawQuad>();
   quad->SetAll(sqs, rect, rect, rect, needs_blending, resource.id, gfx::Size(),
                premultiplied_alpha, uv_top_left, uv_bottom_right,
                background_color, vertex_opacity, y_flipped, nearest_neighbor,
                secure_output_only);

   ui_frame.render_pass_list.push_back(std::move(pass));

   compositor_frame_sink_->SubmitCompositorFrame(std::move(ui_frame));
 }

 void MusBrowserCompositorOutputSurface::SetBeginFrameSource(
     cc::BeginFrameSource* source) {
   begin_frame_source_ = source;
 }

 void MusBrowserCompositorOutputSurface::ReclaimResources(
     const cc::ReturnedResourceArray& resources) {
   for (const auto& resource : resources) {
     DCHECK_EQ(1, resource.count);
     const gpu::Mailbox& mailbox = GetMailboxFromResourceId(resource.id);
     GetCommandBufferProxy()->ReturnFrontBuffer(mailbox, resource.sync_token,
                                                resource.lost);
     FreeResourceId(resource.id);
   }
 }

 void MusBrowserCompositorOutputSurface::SetTreeActivationCallback(
     const base::Closure& callback) {}

 void MusBrowserCompositorOutputSurface::DidReceiveCompositorFrameAck() {
   OnGpuSwapBuffersCompleted(std::vector<ui::LatencyInfo>(),
                             gfx::SwapResult::SWAP_ACK, nullptr);
 }

 void MusBrowserCompositorOutputSurface::DidLoseCompositorFrameSink() {}

 void MusBrowserCompositorOutputSurface::OnDraw(
     const gfx::Transform& transform,
     const gfx::Rect& viewport,
     bool resourceless_software_draw) {}

 void MusBrowserCompositorOutputSurface::SetMemoryPolicy(
     const cc::ManagedMemoryPolicy& policy) {}

 void MusBrowserCompositorOutputSurface::SetExternalTilePriorityConstraints(
     const gfx::Rect& viewport_rect,
     const gfx::Transform& transform) {}

 uint32_t MusBrowserCompositorOutputSurface::AllocateResourceId() {
   if (!free_resource_ids_.empty()) {
     uint32_t id = free_resource_ids_.back();
     free_resource_ids_.pop_back();
     return id;
   }
   // If there is no free resource id, we generate a new mailbox in the mailbox
   // vector, and the index of the new mailbox is the new allocated resource id.
   uint32_t id = mailboxes_.size();
   mailboxes_.push_back(gpu::Mailbox::Generate());
   return id;
 }

 void MusBrowserCompositorOutputSurface::FreeResourceId(uint32_t id) {
   DCHECK_LT(id, mailboxes_.size());
   DCHECK(std::find(free_resource_ids_.begin(), free_resource_ids_.end(), id) ==
          free_resource_ids_.end());
   free_resource_ids_.push_back(id);
 }

 const gpu::Mailbox& MusBrowserCompositorOutputSurface::GetMailboxFromResourceId(
     uint32_t id) {
   DCHECK_LT(id, mailboxes_.size());
   DCHECK(std::find(free_resource_ids_.begin(), free_resource_ids_.end(), id) ==
          free_resource_ids_.end());
   return mailboxes_[id];
 }

 }  // namespace content
	// Copyright 2016 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/mus_browser_compositor_output_surface.h"

	#include <utility>

	#include "cc/output/compositor_frame.h"
	#include "cc/output/output_surface_frame.h"
	#include "cc/quads/render_pass.h"
	#include "cc/quads/texture_draw_quad.h"
	#include "components/display_compositor/compositor_overlay_candidate_validator.h"
	#include "gpu/command_buffer/client/gles2_interface.h"
	#include "gpu/ipc/client/command_buffer_proxy_impl.h"
	#include "services/ui/public/cpp/gpu/context_provider_command_buffer.h"
	#include "ui/aura/mus/window_compositor_frame_sink.h"
	#include "ui/aura/mus/window_port_mus.h"
	#include "ui/aura/window.h"
	#include "ui/display/screen.h"
	#include "ui/gfx/geometry/dip_util.h"

	namespace content {

	MusBrowserCompositorOutputSurface::MusBrowserCompositorOutputSurface(
	aura::Window* window,
	scoped_refptr<ui::ContextProviderCommandBuffer> context,
	gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
	const UpdateVSyncParametersCallback& update_vsync_parameters_callback,
	std::unique_ptr<display_compositor::CompositorOverlayCandidateValidator>
	overlay_candidate_validator)
	: GpuBrowserCompositorOutputSurface(std::move(context),
	update_vsync_parameters_callback,
	std::move(overlay_candidate_validator),
	false /* support_stencil */),
	window_(window),
	begin_frame_source_(nullptr) {
	aura::WindowPortMus* window_port = aura::WindowPortMus::Get(window_);
	DCHECK(window_port);
	compositor_frame_sink_ = window_port->RequestCompositorFrameSink(
	context, gpu_memory_buffer_manager);
	compositor_frame_sink_->BindToClient(this);
	}

	MusBrowserCompositorOutputSurface::~MusBrowserCompositorOutputSurface() {}

	cc::BeginFrameSource* MusBrowserCompositorOutputSurface::GetBeginFrameSource() {
	return begin_frame_source_;
	}

	void MusBrowserCompositorOutputSurface::SwapBuffers(
	cc::OutputSurfaceFrame frame) {
	cc::CompositorFrame ui_frame;
	ui_frame.metadata.device_scale_factor = display::Screen::GetScreen()
	->GetDisplayNearestWindow(window_)
	.device_scale_factor();
	ui_frame.metadata.latency_info = std::move(frame.latency_info);
	// Reset latency_info to known empty state after moving contents.
	frame.latency_info.clear();
	const int render_pass_id = 1;
	const gfx::Rect bounds_in_dip = gfx::Rect(window_->bounds().size());
	const gfx::Rect bounds_in_pixels = gfx::ConvertRectToPixel(
	ui_frame.metadata.device_scale_factor, bounds_in_dip);
	std::unique_ptr<cc::RenderPass> pass = cc::RenderPass::Create();
	pass->SetNew(render_pass_id, bounds_in_pixels, bounds_in_pixels,
	gfx::Transform());
	// The SharedQuadState is owned by the SharedQuadStateList
	// shared_quad_state_list.
	cc::SharedQuadState* sqs = pass->CreateAndAppendSharedQuadState();
	sqs->SetAll(gfx::Transform(), bounds_in_pixels.size(), bounds_in_pixels,
	bounds_in_pixels, false /* is_clipped /, 1.f / opacity */,
	SkBlendMode::kSrc, 0 /* sorting_context_id */);

	cc::TransferableResource resource;
	resource.id = AllocateResourceId();
	resource.format = cc::ResourceFormat::RGBA_8888;
	resource.filter = GL_LINEAR;
	resource.size = frame.size;

	const gpu::Mailbox& mailbox = GetMailboxFromResourceId(resource.id);
	DCHECK(!mailbox.IsZero());
	const gfx::Rect rect(frame.size);

	// Call parent's SwapBuffers to generate the front buffer, and then send the
	// front buffer to mus.
	// TODO(penghuang): we should avoid extra copies here by sending frames to mus
	// directly from renderer.
	GpuBrowserCompositorOutputSurface::SwapBuffers(std::move(frame));
	GetCommandBufferProxy()->TakeFrontBuffer(mailbox);

	auto* gl = context_provider()->ContextGL();
	const GLuint64 fence_sync = gl->InsertFenceSyncCHROMIUM();
	gl->ShallowFlushCHROMIUM();
	gpu::SyncToken sync_token;
	gl->GenSyncTokenCHROMIUM(fence_sync, sync_token.GetData());

	resource.mailbox_holder =
	gpu::MailboxHolder(mailbox, sync_token, GL_TEXTURE_2D);
	resource.read_lock_fences_enabled = false;
	resource.is_software = false;
	resource.is_overlay_candidate = false;
	ui_frame.resource_list.push_back(std::move(resource));

	const bool needs_blending = true;
	const bool premultiplied_alpha = true;
	const gfx::PointF uv_top_left(0.f, 0.f);
	const gfx::PointF uv_bottom_right(1.f, 1.f);
	const uint32_t background_color = 0x00000000;
	const float vertex_opacity[4] = {1.f, 1.f, 1.f, 1.f};
	const bool y_flipped = true;
	const bool nearest_neighbor = false;
	const bool secure_output_only = false;

	cc::TextureDrawQuad* quad =
	pass->CreateAndAppendDrawQuad<cc::TextureDrawQuad>();
	quad->SetAll(sqs, rect, rect, rect, needs_blending, resource.id, gfx::Size(),
	premultiplied_alpha, uv_top_left, uv_bottom_right,
	background_color, vertex_opacity, y_flipped, nearest_neighbor,
	secure_output_only);

	ui_frame.render_pass_list.push_back(std::move(pass));

	compositor_frame_sink_->SubmitCompositorFrame(std::move(ui_frame));
	}

	void MusBrowserCompositorOutputSurface::SetBeginFrameSource(
	cc::BeginFrameSource* source) {
	begin_frame_source_ = source;
	}

	void MusBrowserCompositorOutputSurface::ReclaimResources(
	const cc::ReturnedResourceArray& resources) {
	for (const auto& resource : resources) {
	DCHECK_EQ(1, resource.count);
	const gpu::Mailbox& mailbox = GetMailboxFromResourceId(resource.id);
	GetCommandBufferProxy()->ReturnFrontBuffer(mailbox, resource.sync_token,
	resource.lost);
	FreeResourceId(resource.id);
	}
	}

	void MusBrowserCompositorOutputSurface::SetTreeActivationCallback(
	const base::Closure& callback) {}

	void MusBrowserCompositorOutputSurface::DidReceiveCompositorFrameAck() {
	OnGpuSwapBuffersCompleted(std::vector<ui::LatencyInfo>(),
	gfx::SwapResult::SWAP_ACK, nullptr);
	}

	void MusBrowserCompositorOutputSurface::DidLoseCompositorFrameSink() {}

	void MusBrowserCompositorOutputSurface::OnDraw(
	const gfx::Transform& transform,
	const gfx::Rect& viewport,
	bool resourceless_software_draw) {}

	void MusBrowserCompositorOutputSurface::SetMemoryPolicy(
	const cc::ManagedMemoryPolicy& policy) {}

	void MusBrowserCompositorOutputSurface::SetExternalTilePriorityConstraints(
	const gfx::Rect& viewport_rect,
	const gfx::Transform& transform) {}

	uint32_t MusBrowserCompositorOutputSurface::AllocateResourceId() {
	if (!free_resource_ids_.empty()) {
	uint32_t id = free_resource_ids_.back();
	free_resource_ids_.pop_back();
	return id;
	}
	// If there is no free resource id, we generate a new mailbox in the mailbox
	// vector, and the index of the new mailbox is the new allocated resource id.
	uint32_t id = mailboxes_.size();
	mailboxes_.push_back(gpu::Mailbox::Generate());
	return id;
	}

	void MusBrowserCompositorOutputSurface::FreeResourceId(uint32_t id) {
	DCHECK_LT(id, mailboxes_.size());
	DCHECK(std::find(free_resource_ids_.begin(), free_resource_ids_.end(), id) ==
	free_resource_ids_.end());
	free_resource_ids_.push_back(id);
	}

	const gpu::Mailbox& MusBrowserCompositorOutputSurface::GetMailboxFromResourceId(
	uint32_t id) {
	DCHECK_LT(id, mailboxes_.size());
	DCHECK(std::find(free_resource_ids_.begin(), free_resource_ids_.end(), id) ==
	free_resource_ids_.end());
	return mailboxes_[id];
	}

	} // namespace content