content/browser/compositor/mus_browser_compositor_output_surface.cc - chromium/src.git - 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/quads/render_pass.h"
 #include "cc/quads/texture_draw_quad.h"
 #include "components/display_compositor/compositor_overlay_candidate_validator.h"
 #include "content/common/gpu/client/context_provider_command_buffer.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "gpu/ipc/client/command_buffer_proxy_impl.h"
 #include "services/ui/public/cpp/window.h"
 #include "services/ui/public/cpp/window_surface.h"

 namespace content {

 MusBrowserCompositorOutputSurface::MusBrowserCompositorOutputSurface(
     ui::Window* window,
     scoped_refptr<ContextProviderCommandBuffer> context,
     scoped_refptr<ui::CompositorVSyncManager> vsync_manager,
     cc::SyntheticBeginFrameSource* begin_frame_source,
     std::unique_ptr<display_compositor::CompositorOverlayCandidateValidator>
         overlay_candidate_validator)
     : GpuBrowserCompositorOutputSurface(std::move(context),
                                         std::move(vsync_manager),
                                         begin_frame_source,
                                         std::move(overlay_candidate_validator)),
       ui_window_(window) {
   ui_window_surface_ =
       ui_window_->RequestSurface(ui::mojom::SurfaceType::DEFAULT);
 }

 MusBrowserCompositorOutputSurface::~MusBrowserCompositorOutputSurface() {}

 void MusBrowserCompositorOutputSurface::SwapBuffers(cc::CompositorFrame frame) {
   const gfx::Rect bounds(ui_window_->bounds().size());
   cc::CompositorFrame ui_frame;
   ui_frame.metadata = std::move(frame.metadata);
   ui_frame.delegated_frame_data = base::MakeUnique<cc::DelegatedFrameData>();
   const cc::RenderPassId render_pass_id(1, 1);
   std::unique_ptr<cc::RenderPass> pass = cc::RenderPass::Create();
   const bool has_transparent_background = true;
   pass->SetAll(render_pass_id, bounds, bounds, gfx::Transform(),
                has_transparent_background);
   // The SharedQuadState is owned by the SharedQuadStateList
   // shared_quad_state_list.
   cc::SharedQuadState* sqs = pass->CreateAndAppendSharedQuadState();
   sqs->SetAll(gfx::Transform(), bounds.size(), bounds, bounds,
               false /* is_clipped */, 1.f /* opacity */, SkXfermode::kSrc_Mode,
               0 /* sorting_context_id */);

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

   const gpu::Mailbox& mailbox = GetMailboxFromResourceId(resource.id);
   DCHECK(!mailbox.IsZero());
   const gfx::Rect rect(frame.gl_frame_data->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.delegated_frame_data->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.delegated_frame_data->render_pass_list.push_back(std::move(pass));
   // ui_frame_surface_ will be destroyed by MusBrowserCompositorOutputSurface's
   // destructor, and the callback of SubmitCompositorFrame() will not be fired
   // after ui_window_surface_ is destroyed, so it is safe to use
   // base::Unretained(this) here.
   ui_window_surface_->SubmitCompositorFrame(
       std::move(ui_frame),
       base::Bind(&MusBrowserCompositorOutputSurface::OnGpuSwapBuffersCompleted,
                  base::Unretained(this), std::vector<ui::LatencyInfo>(),
                  gfx::SwapResult::SWAP_ACK, nullptr));
   return;
 }

 bool MusBrowserCompositorOutputSurface::BindToClient(
     cc::OutputSurfaceClient* client) {
   if (!GpuBrowserCompositorOutputSurface::BindToClient(client))
     return false;
   ui_window_surface_->BindToThread();
   ui_window_surface_->set_client(this);
   return true;
 }

 void MusBrowserCompositorOutputSurface::OnResourcesReturned(
     ui::WindowSurface* surface,
     mojo::Array<cc::ReturnedResource> 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);
   }
 }

 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/quads/render_pass.h"
	#include "cc/quads/texture_draw_quad.h"
	#include "components/display_compositor/compositor_overlay_candidate_validator.h"
	#include "content/common/gpu/client/context_provider_command_buffer.h"
	#include "gpu/command_buffer/client/gles2_interface.h"
	#include "gpu/ipc/client/command_buffer_proxy_impl.h"
	#include "services/ui/public/cpp/window.h"
	#include "services/ui/public/cpp/window_surface.h"

	namespace content {

	MusBrowserCompositorOutputSurface::MusBrowserCompositorOutputSurface(
	ui::Window* window,
	scoped_refptr<ContextProviderCommandBuffer> context,
	scoped_refptr<ui::CompositorVSyncManager> vsync_manager,
	cc::SyntheticBeginFrameSource* begin_frame_source,
	std::unique_ptr<display_compositor::CompositorOverlayCandidateValidator>
	overlay_candidate_validator)
	: GpuBrowserCompositorOutputSurface(std::move(context),
	std::move(vsync_manager),
	begin_frame_source,
	std::move(overlay_candidate_validator)),
	ui_window_(window) {
	ui_window_surface_ =
	ui_window_->RequestSurface(ui::mojom::SurfaceType::DEFAULT);
	}

	MusBrowserCompositorOutputSurface::~MusBrowserCompositorOutputSurface() {}

	void MusBrowserCompositorOutputSurface::SwapBuffers(cc::CompositorFrame frame) {
	const gfx::Rect bounds(ui_window_->bounds().size());
	cc::CompositorFrame ui_frame;
	ui_frame.metadata = std::move(frame.metadata);
	ui_frame.delegated_frame_data = base::MakeUnique<cc::DelegatedFrameData>();
	const cc::RenderPassId render_pass_id(1, 1);
	std::unique_ptr<cc::RenderPass> pass = cc::RenderPass::Create();
	const bool has_transparent_background = true;
	pass->SetAll(render_pass_id, bounds, bounds, gfx::Transform(),
	has_transparent_background);
	// The SharedQuadState is owned by the SharedQuadStateList
	// shared_quad_state_list.
	cc::SharedQuadState* sqs = pass->CreateAndAppendSharedQuadState();
	sqs->SetAll(gfx::Transform(), bounds.size(), bounds, bounds,
	false /* is_clipped /, 1.f / opacity */, SkXfermode::kSrc_Mode,
	0 /* sorting_context_id */);

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

	const gpu::Mailbox& mailbox = GetMailboxFromResourceId(resource.id);
	DCHECK(!mailbox.IsZero());
	const gfx::Rect rect(frame.gl_frame_data->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.delegated_frame_data->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.delegated_frame_data->render_pass_list.push_back(std::move(pass));
	// ui_frame_surface_ will be destroyed by MusBrowserCompositorOutputSurface's
	// destructor, and the callback of SubmitCompositorFrame() will not be fired
	// after ui_window_surface_ is destroyed, so it is safe to use
	// base::Unretained(this) here.
	ui_window_surface_->SubmitCompositorFrame(
	std::move(ui_frame),
	base::Bind(&MusBrowserCompositorOutputSurface::OnGpuSwapBuffersCompleted,
	base::Unretained(this), std::vector<ui::LatencyInfo>(),
	gfx::SwapResult::SWAP_ACK, nullptr));
	return;
	}

	bool MusBrowserCompositorOutputSurface::BindToClient(
	cc::OutputSurfaceClient* client) {
	if (!GpuBrowserCompositorOutputSurface::BindToClient(client))
	return false;
	ui_window_surface_->BindToThread();
	ui_window_surface_->set_client(this);
	return true;
	}

	void MusBrowserCompositorOutputSurface::OnResourcesReturned(
	ui::WindowSurface* surface,
	mojo::Array<cc::ReturnedResource> 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);
	}
	}

	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