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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/exo/buffer.h"
#include <stdint.h>
#include <algorithm>
#include <cstddef>
#include <utility>
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/logging.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/task/single_thread_task_runner.h"
#include "base/time/time.h"
#include "base/trace_event/trace_event.h"
#include "base/trace_event/traced_value.h"
#include "build/build_config.h"
#include "components/exo/frame_sink_resource_manager.h"
#include "components/viz/common/gpu/context_lost_observer.h"
#include "components/viz/common/gpu/context_provider.h"
#include "components/viz/common/resources/resource_id.h"
#include "components/viz/common/resources/returned_resource.h"
#include "components/viz/common/resources/shared_image_format.h"
#include "components/viz/common/resources/shared_image_format_utils.h"
#include "gpu/GLES2/gl2extchromium.h"
#include "gpu/command_buffer/client/client_shared_image.h"
#include "gpu/command_buffer/client/context_support.h"
#include "gpu/command_buffer/client/raster_interface.h"
#include "gpu/command_buffer/client/shared_image_interface.h"
#include "gpu/command_buffer/common/mailbox.h"
#include "gpu/command_buffer/common/shared_image_usage.h"
#include "gpu/command_buffer/common/sync_token.h"
#include "media/base/media_switches.h"
#include "ui/aura/env.h"
#include "ui/color/color_id.h"
#include "ui/compositor/compositor.h"
#include "ui/gfx/color_space.h"
#include "ui/gfx/gpu_fence_handle.h"
#include "ui/gfx/gpu_memory_buffer.h"
#if BUILDFLAG(USE_ARC_PROTECTED_MEDIA)
#include "base/files/scoped_file.h"
#include "base/posix/eintr_wrapper.h"
#endif // BUILDFLAG(USE_ARC_PROTECTED_MEDIA)
namespace exo {
namespace {
// The amount of time before we wait for release queries using
// GetQueryObjectuivEXT(GL_QUERY_RESULT_EXT).
const int kWaitForReleaseDelayMs = 500;
constexpr char kBufferInUse[] = "BufferInUse";
// Gets the color type of |format| for creating bitmap. If it returns
// SkColorType::kUnknown_SkColorType, it means with this format, this buffer
// contents should not be used to create bitmap.
SkColorType GetColorTypeForBitmapCreation(gfx::BufferFormat format) {
switch (format) {
case gfx::BufferFormat::RGBA_8888:
return SkColorType::kRGBA_8888_SkColorType;
case gfx::BufferFormat::BGRA_8888:
return SkColorType::kBGRA_8888_SkColorType;
default:
// Don't create bitmap for other formats.
return SkColorType::kUnknown_SkColorType;
}
}
// Gets the shared image format equivalent of |buffer_format| used for creating
// shared image.
viz::SharedImageFormat GetSharedImageFormat(gfx::BufferFormat buffer_format) {
viz::SharedImageFormat format;
switch (buffer_format) {
case gfx::BufferFormat::BGRA_8888:
return viz::SinglePlaneFormat::kBGRA_8888;
case gfx::BufferFormat::R_8:
return viz::SinglePlaneFormat::kR_8;
case gfx::BufferFormat::R_16:
return viz::SinglePlaneFormat::kR_16;
case gfx::BufferFormat::RG_1616:
return viz::SinglePlaneFormat::kRG_1616;
case gfx::BufferFormat::RGBA_4444:
return viz::SinglePlaneFormat::kRGBA_4444;
case gfx::BufferFormat::RGBA_8888:
return viz::SinglePlaneFormat::kRGBA_8888;
case gfx::BufferFormat::RGBA_F16:
return viz::SinglePlaneFormat::kRGBA_F16;
case gfx::BufferFormat::BGR_565:
return viz::SinglePlaneFormat::kBGR_565;
case gfx::BufferFormat::RG_88:
return viz::SinglePlaneFormat::kRG_88;
case gfx::BufferFormat::RGBX_8888:
return viz::SinglePlaneFormat::kRGBX_8888;
case gfx::BufferFormat::BGRX_8888:
return viz::SinglePlaneFormat::kBGRX_8888;
case gfx::BufferFormat::RGBA_1010102:
return viz::SinglePlaneFormat::kRGBA_1010102;
case gfx::BufferFormat::BGRA_1010102:
return viz::SinglePlaneFormat::kBGRA_1010102;
case gfx::BufferFormat::YVU_420:
format = viz::MultiPlaneFormat::kYV12;
break;
case gfx::BufferFormat::YUV_420_BIPLANAR:
format = viz::MultiPlaneFormat::kNV12;
break;
case gfx::BufferFormat::YUVA_420_TRIPLANAR:
format = viz::MultiPlaneFormat::kNV12A;
break;
case gfx::BufferFormat::P010:
format = viz::MultiPlaneFormat::kP010;
break;
}
#if BUILDFLAG(IS_CHROMEOS)
// If format is true multiplanar format, we prefer external sampler on
// ChromeOS.
if (format.is_multi_plane()) {
format.SetPrefersExternalSampler();
}
#endif
return format;
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
// Buffer::Texture
// Encapsulates the state and logic needed to bind a buffer to a SharedImage.
class Buffer::Texture : public viz::ContextLostObserver {
public:
Texture(scoped_refptr<viz::RasterContextProvider> context_provider,
const gfx::Size& size,
gfx::ColorSpace color_space,
gpu::SyncToken& sync_token_out);
Texture(scoped_refptr<viz::RasterContextProvider> context_provider,
gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
gfx::GpuMemoryBuffer* gpu_memory_buffer,
gfx::ColorSpace color_space,
unsigned texture_target,
unsigned query_type,
base::TimeDelta wait_for_release_time,
bool is_overlay_candidate,
gpu::SyncToken& sync_token_out);
Texture(const Texture&) = delete;
Texture& operator=(const Texture&) = delete;
~Texture() override;
// Overridden from viz::ContextLostObserver:
void OnContextLost() override;
// Returns true if the RasterInterface context has been lost.
bool IsLost();
// Allow texture to be reused after |sync_token| has passed and runs
// |callback|.
void Release(base::OnceCallback<void(gfx::GpuFenceHandle)> callback,
viz::ReturnedResource resource);
// Updates the contents referenced by |gpu_memory_buffer_| returned by
// mailbox().
// Returns a sync token that can be used when accessing the SharedImage from a
// different context.
gpu::SyncToken UpdateSharedImage(
std::unique_ptr<gfx::GpuFence> acquire_fence);
// Releases the contents referenced by |mailbox_| after |sync_token| has
// passed and runs |callback| when completed.
void ReleaseSharedImage(
base::OnceCallback<void(gfx::GpuFenceHandle)> callback,
viz::ReturnedResource resource);
// Copy the contents of texture to |destination| and runs |callback| when
// completed. Returns a sync token that can be used when accessing texture
// from a different context.
gpu::SyncToken CopyTexImage(std::unique_ptr<gfx::GpuFence> acquire_fence,
Texture* destination,
base::OnceClosure callback);
// Returns the mailbox for this texture.
gpu::Mailbox mailbox() const { return mailbox_; }
private:
void DestroyResources();
void ReleaseWhenQueryResultIsAvailable(base::OnceClosure callback);
void Released();
void ScheduleWaitForRelease(base::TimeDelta delay);
void WaitForRelease();
const raw_ptr<gfx::GpuMemoryBuffer, DanglingUntriaged | ExperimentalAsh>
gpu_memory_buffer_;
const gfx::Size size_;
scoped_refptr<viz::RasterContextProvider> context_provider_;
const unsigned texture_target_;
const unsigned query_type_;
unsigned query_id_ = 0;
gpu::Mailbox mailbox_;
base::OnceClosure release_callback_;
const base::TimeDelta wait_for_release_delay_;
base::TimeTicks wait_for_release_time_;
bool wait_for_release_pending_ = false;
base::WeakPtrFactory<Texture> weak_ptr_factory_{this};
};
Buffer::Texture::Texture(
scoped_refptr<viz::RasterContextProvider> context_provider,
const gfx::Size& size,
gfx::ColorSpace color_space,
gpu::SyncToken& sync_token_out)
: gpu_memory_buffer_(nullptr),
size_(size),
context_provider_(std::move(context_provider)),
texture_target_(GL_TEXTURE_2D),
query_type_(GL_COMMANDS_COMPLETED_CHROMIUM) {
gpu::SharedImageInterface* sii = context_provider_->SharedImageInterface();
// Add GLES2 usage as it is used by RasterImplementationGLES.
const uint32_t usage = gpu::SHARED_IMAGE_USAGE_RASTER |
gpu::SHARED_IMAGE_USAGE_DISPLAY_READ |
gpu::SHARED_IMAGE_USAGE_GLES2;
mailbox_ = sii->CreateSharedImage(viz::SinglePlaneFormat::kRGBA_8888, size,
color_space, kTopLeft_GrSurfaceOrigin,
kPremul_SkAlphaType, usage, "ExoTexture",
gpu::kNullSurfaceHandle);
DCHECK(!mailbox_.IsZero());
gpu::raster::RasterInterface* ri = context_provider_->RasterInterface();
sync_token_out = sii->GenUnverifiedSyncToken();
ri->WaitSyncTokenCHROMIUM(sync_token_out.GetConstData());
// Provides a notification when |context_provider_| is lost.
context_provider_->AddObserver(this);
}
Buffer::Texture::Texture(
scoped_refptr<viz::RasterContextProvider> context_provider,
gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
gfx::GpuMemoryBuffer* gpu_memory_buffer,
gfx::ColorSpace color_space,
unsigned texture_target,
unsigned query_type,
base::TimeDelta wait_for_release_delay,
bool is_overlay_candidate,
gpu::SyncToken& sync_token_out)
: gpu_memory_buffer_(gpu_memory_buffer),
size_(gpu_memory_buffer->GetSize()),
context_provider_(std::move(context_provider)),
texture_target_(texture_target),
query_type_(query_type),
wait_for_release_delay_(wait_for_release_delay) {
gpu::SharedImageInterface* sii = context_provider_->SharedImageInterface();
// Add GLES2 usage as it is used by RasterImplementationGLES.
uint32_t usage = gpu::SHARED_IMAGE_USAGE_RASTER |
gpu::SHARED_IMAGE_USAGE_DISPLAY_READ |
gpu::SHARED_IMAGE_USAGE_GLES2;
if (is_overlay_candidate) {
usage |= gpu::SHARED_IMAGE_USAGE_SCANOUT;
}
if (media::IsMultiPlaneFormatForHardwareVideoEnabled()) {
auto si_format = GetSharedImageFormat(gpu_memory_buffer_->GetFormat());
auto client_shared_image = sii->CreateSharedImage(
si_format, gpu_memory_buffer_->GetSize(), color_space,
kTopLeft_GrSurfaceOrigin, kPremul_SkAlphaType, usage, "ExoTexture",
gpu_memory_buffer_->CloneHandle());
CHECK(client_shared_image);
mailbox_ = client_shared_image->mailbox();
} else {
mailbox_ = sii->CreateSharedImage(
gpu_memory_buffer_, gpu_memory_buffer_manager,
gfx::BufferPlane::DEFAULT, color_space, kTopLeft_GrSurfaceOrigin,
kPremul_SkAlphaType, usage, "ExoTexture");
}
DCHECK(!mailbox_.IsZero());
gpu::raster::RasterInterface* ri = context_provider_->RasterInterface();
sync_token_out = sii->GenUnverifiedSyncToken();
ri->WaitSyncTokenCHROMIUM(sync_token_out.GetConstData());
ri->GenQueriesEXT(1, &query_id_);
// Provides a notification when |context_provider_| is lost.
context_provider_->AddObserver(this);
}
Buffer::Texture::~Texture() {
DestroyResources();
if (context_provider_)
context_provider_->RemoveObserver(this);
}
void Buffer::Texture::OnContextLost() {
DestroyResources();
context_provider_->RemoveObserver(this);
context_provider_.reset();
}
bool Buffer::Texture::IsLost() {
if (context_provider_) {
gpu::raster::RasterInterface* ri = context_provider_->RasterInterface();
return ri->GetGraphicsResetStatusKHR() != GL_NO_ERROR;
}
return true;
}
void Buffer::Texture::Release(
base::OnceCallback<void(gfx::GpuFenceHandle)> callback,
viz::ReturnedResource resource) {
if (context_provider_) {
// Only need to wait on the sync token if we don't have a release fence.
if (resource.sync_token.HasData() && resource.release_fence.is_null()) {
gpu::raster::RasterInterface* ri = context_provider_->RasterInterface();
ri->WaitSyncTokenCHROMIUM(resource.sync_token.GetConstData());
}
}
// Run callback as texture can be reused immediately after waiting for sync
// token.
std::move(callback).Run(std::move(resource.release_fence));
}
gpu::SyncToken Buffer::Texture::UpdateSharedImage(
std::unique_ptr<gfx::GpuFence> acquire_fence) {
gpu::SyncToken sync_token;
if (context_provider_) {
gpu::SharedImageInterface* sii = context_provider_->SharedImageInterface();
DCHECK(!mailbox_.IsZero());
// UpdateSharedImage gets called only after |mailbox_| can be reused.
// A buffer can be reattached to a surface only after it has been returned
// to wayland clients. We return buffers to clients only after the query
// |query_type_| is available.
sii->UpdateSharedImage(gpu::SyncToken(), std::move(acquire_fence),
mailbox_);
sync_token = sii->GenUnverifiedSyncToken();
TRACE_EVENT_ASYNC_STEP_INTO0("exo", kBufferInUse, gpu_memory_buffer_,
"bound");
}
return sync_token;
}
void Buffer::Texture::ReleaseSharedImage(
base::OnceCallback<void(gfx::GpuFenceHandle)> callback,
viz::ReturnedResource resource) {
// Only need to wait on the sync token and query if we don't have a release
// fence.
if (context_provider_ && resource.release_fence.is_null()) {
gpu::raster::RasterInterface* ri = context_provider_->RasterInterface();
if (resource.sync_token.HasData())
ri->WaitSyncTokenCHROMIUM(resource.sync_token.GetConstData());
ri->BeginQueryEXT(query_type_, query_id_);
ri->EndQueryEXT(query_type_);
// Run callback when query result is available (i.e., when all operations on
// the shared image have completed and it's ready to be reused) if sync
// token has data and buffer has been used. If buffer was never used then
// run the callback immediately.
if (resource.sync_token.HasData()) {
ReleaseWhenQueryResultIsAvailable(base::BindOnce(
std::move(callback), /*release_fence=*/gfx::GpuFenceHandle()));
return;
}
}
std::move(callback).Run(std::move(resource.release_fence));
}
gpu::SyncToken Buffer::Texture::CopyTexImage(
std::unique_ptr<gfx::GpuFence> acquire_fence,
Texture* destination,
base::OnceClosure callback) {
gpu::SyncToken sync_token;
if (context_provider_) {
DCHECK(!mailbox_.IsZero());
gpu::SharedImageInterface* sii = context_provider_->SharedImageInterface();
sii->UpdateSharedImage(gpu::SyncToken(), std::move(acquire_fence),
mailbox_);
sync_token = sii->GenUnverifiedSyncToken();
gpu::raster::RasterInterface* ri = context_provider_->RasterInterface();
ri->WaitSyncTokenCHROMIUM(sync_token.GetConstData());
DCHECK_NE(query_id_, 0u);
ri->BeginQueryEXT(query_type_, query_id_);
ri->CopySharedImage(mailbox_, destination->mailbox_,
destination->texture_target_, 0, 0, 0, 0, size_.width(),
size_.height(), /*unpack_flip_y=*/false,
/*unpack_premultiply_alpha=*/false);
ri->EndQueryEXT(query_type_);
// Run callback when query result is available.
ReleaseWhenQueryResultIsAvailable(std::move(callback));
// Create and return a sync token that can be used to ensure that the
// CopySharedImage call is processed before issuing any commands
// that will read from the target texture on a different context.
ri->GenUnverifiedSyncTokenCHROMIUM(sync_token.GetData());
}
return sync_token;
}
void Buffer::Texture::DestroyResources() {
if (context_provider_) {
if (query_id_) {
gpu::raster::RasterInterface* ri = context_provider_->RasterInterface();
ri->DeleteQueriesEXT(1, &query_id_);
query_id_ = 0;
}
gpu::SharedImageInterface* sii = context_provider_->SharedImageInterface();
sii->DestroySharedImage(gpu::SyncToken(), mailbox_);
}
}
void Buffer::Texture::ReleaseWhenQueryResultIsAvailable(
base::OnceClosure callback) {
DCHECK(context_provider_);
DCHECK(release_callback_.is_null());
release_callback_ = std::move(callback);
wait_for_release_time_ = base::TimeTicks::Now() + wait_for_release_delay_;
ScheduleWaitForRelease(wait_for_release_delay_);
TRACE_EVENT_ASYNC_STEP_INTO0("exo", kBufferInUse, gpu_memory_buffer_,
"pending_query");
context_provider_->ContextSupport()->SignalQuery(
query_id_, base::BindOnce(&Buffer::Texture::Released,
weak_ptr_factory_.GetWeakPtr()));
}
void Buffer::Texture::Released() {
if (!release_callback_.is_null())
std::move(release_callback_).Run();
}
void Buffer::Texture::ScheduleWaitForRelease(base::TimeDelta delay) {
if (wait_for_release_pending_)
return;
wait_for_release_pending_ = true;
base::SingleThreadTaskRunner::GetCurrentDefault()->PostDelayedTask(
FROM_HERE,
base::BindOnce(&Buffer::Texture::WaitForRelease,
weak_ptr_factory_.GetWeakPtr()),
delay);
}
void Buffer::Texture::WaitForRelease() {
DCHECK(wait_for_release_pending_);
wait_for_release_pending_ = false;
if (release_callback_.is_null())
return;
base::TimeTicks current_time = base::TimeTicks::Now();
if (current_time < wait_for_release_time_) {
ScheduleWaitForRelease(wait_for_release_time_ - current_time);
return;
}
base::OnceClosure callback = std::move(release_callback_);
if (context_provider_) {
TRACE_EVENT0("exo", "Buffer::Texture::WaitForQueryResult");
// We need to wait for the result to be available. Getting the result of
// the query implies waiting for it to become available. The actual result
// is unimportant and also not well defined.
unsigned result = 0;
gpu::raster::RasterInterface* ri = context_provider_->RasterInterface();
ri->GetQueryObjectuivEXT(query_id_, GL_QUERY_RESULT_EXT, &result);
}
std::move(callback).Run();
}
Buffer::BufferRelease::BufferRelease(
gfx::GpuFenceHandle release_fence,
std::unique_ptr<base::FileDescriptorWatcher::Controller> controller,
base::OnceClosure buffer_release_callback)
: release_fence(std::move(release_fence)),
controller(std::move(controller)),
buffer_release_callback(std::move(buffer_release_callback)) {}
Buffer::BufferRelease::~BufferRelease() = default;
Buffer::BufferRelease::BufferRelease(BufferRelease&&) = default;
Buffer::BufferRelease& Buffer::BufferRelease::operator=(BufferRelease&&) =
default;
////////////////////////////////////////////////////////////////////////////////
// Buffer, public:
Buffer::Buffer(std::unique_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer)
: Buffer(std::move(gpu_memory_buffer),
GL_TEXTURE_2D /* texture_target */,
GL_COMMANDS_COMPLETED_CHROMIUM /* query_type */,
true /* use_zero_copy */,
false /* is_overlay_candidate */,
false /* y_invert */) {}
Buffer::Buffer(std::unique_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer,
unsigned texture_target,
unsigned query_type,
bool use_zero_copy,
bool is_overlay_candidate,
bool y_invert)
: gpu_memory_buffer_(std::move(gpu_memory_buffer)),
texture_target_(texture_target),
query_type_(query_type),
use_zero_copy_(use_zero_copy),
is_overlay_candidate_(is_overlay_candidate),
y_invert_(y_invert),
wait_for_release_delay_(base::Milliseconds(kWaitForReleaseDelayMs)) {}
Buffer::~Buffer() {}
bool Buffer::ProduceTransferableResource(
FrameSinkResourceManager* resource_manager,
std::unique_ptr<gfx::GpuFence> acquire_fence,
bool secure_output_only,
viz::TransferableResource* resource,
gfx::ColorSpace color_space,
ProtectedNativePixmapQueryDelegate* protected_native_pixmap_query,
PerCommitExplicitReleaseCallback per_commit_explicit_release_callback) {
TRACE_EVENT1("exo", "Buffer::ProduceTransferableResource", "buffer_id",
static_cast<const void*>(gfx_buffer()));
DCHECK(attach_count_);
next_commit_id_++;
// If textures are lost, destroy them to ensure that we create new ones below.
if (contents_texture_ && contents_texture_->IsLost())
contents_texture_.reset();
if (texture_ && texture_->IsLost())
texture_.reset();
ui::ContextFactory* context_factory =
aura::Env::GetInstance()->context_factory();
// Note: This can fail if GPU acceleration has been disabled.
scoped_refptr<viz::RasterContextProvider> context_provider =
context_factory->SharedMainThreadRasterContextProvider();
if (!context_provider) {
DLOG(WARNING) << "Failed to acquire a context provider";
resource->id = viz::kInvalidResourceId;
resource->size = gfx::Size();
if (per_commit_explicit_release_callback)
std::move(per_commit_explicit_release_callback)
.Run(/*release_fence=*/gfx::GpuFenceHandle());
return false;
}
const bool request_release_fence =
!per_commit_explicit_release_callback.is_null();
if (per_commit_explicit_release_callback) {
pending_explicit_releases_.emplace(
next_commit_id_, std::move(per_commit_explicit_release_callback));
}
resource->id = resource_manager->AllocateResourceId();
resource->format = viz::SinglePlaneFormat::kRGBA_8888;
resource->size = gpu_memory_buffer_->GetSize();
resource->resource_source =
viz::TransferableResource::ResourceSource::kExoBuffer;
// Create a new image texture for |gpu_memory_buffer_| with |texture_target_|
// if one doesn't already exist. The contents of this buffer are copied to
// |texture| using a call to CopyTexImage.
if (!contents_texture_) {
contents_texture_ = std::make_unique<Texture>(
context_provider, context_factory->GetGpuMemoryBufferManager(),
gpu_memory_buffer_.get(), color_space, texture_target_, query_type_,
wait_for_release_delay_, is_overlay_candidate_,
resource->mailbox_holder.sync_token);
}
Texture* contents_texture = contents_texture_.get();
if (release_contents_callback_.IsCancelled())
TRACE_EVENT_ASYNC_BEGIN1("exo", kBufferInUse, gpu_memory_buffer_.get(),
"buffer_id",
static_cast<const void*>(gfx_buffer()));
// Cancel pending contents release callback.
release_contents_callback_.Reset(
base::BindOnce(&Buffer::ReleaseContents, base::Unretained(this)));
#if BUILDFLAG(USE_ARC_PROTECTED_MEDIA)
// Check if this buffer needs HW protection. This can only happen if we
// require a secure output.
if (secure_output_only &&
protected_buffer_state_ == ProtectedBufferState::UNKNOWN &&
gpu_memory_buffer_ && protected_native_pixmap_query) {
gfx::GpuMemoryBufferHandle gmb_handle = gpu_memory_buffer_->CloneHandle();
if (!gmb_handle.native_pixmap_handle.planes.empty()) {
base::ScopedFD pixmap_handle(HANDLE_EINTR(
dup(gmb_handle.native_pixmap_handle.planes[0].fd.get())));
if (pixmap_handle.is_valid()) {
protected_buffer_state_ = ProtectedBufferState::QUERYING;
protected_native_pixmap_query->IsProtectedNativePixmapHandle(
std::move(pixmap_handle),
base::BindOnce(&Buffer::OnIsProtectedNativePixmapHandle,
AsWeakPtr()));
}
}
}
#endif // BUILDFLAG(USE_ARC_PROTECTED_MEDIA)
// Zero-copy means using the contents texture directly.
if (use_zero_copy_) {
// This binds the latest contents of this buffer to |contents_texture|.
// If there is no acquire fence there is no need to update the shared image.
// We can sync on the existing sync token if present. Examples of where this
// can happen is video, where there is no fence provided, or in
// raster/composite when the fence already signaled at this stage.
if (acquire_fence && !acquire_fence->GetGpuFenceHandle().is_null()) {
resource->mailbox_holder.sync_token =
contents_texture->UpdateSharedImage(std::move(acquire_fence));
}
resource->mailbox_holder = gpu::MailboxHolder(
contents_texture->mailbox(), resource->mailbox_holder.sync_token,
texture_target_);
resource->is_overlay_candidate = is_overlay_candidate_;
resource->format =
viz::GetSinglePlaneSharedImageFormat(gpu_memory_buffer_->GetFormat());
if (context_provider->ContextCapabilities().chromium_gpu_fence &&
request_release_fence) {
resource->synchronization_type =
viz::TransferableResource::SynchronizationType::kReleaseFence;
}
// The contents texture will be released when no longer used by the
// compositor.
resource_manager->SetResourceReleaseCallback(
resource->id,
base::BindOnce(&Buffer::Texture::ReleaseSharedImage,
base::Unretained(contents_texture),
base::BindOnce(&Buffer::ReleaseContentsTexture,
AsWeakPtr(), std::move(contents_texture_),
release_contents_callback_.callback(),
next_commit_id_)));
return true;
}
// Create a mailbox texture that we copy the buffer contents to.
if (!texture_) {
texture_ = std::make_unique<Texture>(
context_provider, gpu_memory_buffer_->GetSize(), color_space,
resource->mailbox_holder.sync_token);
}
Texture* texture = texture_.get();
// Copy the contents of |contents_texture| to |texture| and produce a
// texture mailbox from the result in |texture|. The contents texture will
// be released when copy has completed.
gpu::SyncToken sync_token = contents_texture->CopyTexImage(
std::move(acquire_fence), texture,
base::BindOnce(&Buffer::ReleaseContentsTexture, AsWeakPtr(),
std::move(contents_texture_),
release_contents_callback_.callback(), next_commit_id_,
/*release_fence=*/gfx::GpuFenceHandle()));
resource->mailbox_holder =
gpu::MailboxHolder(texture->mailbox(), sync_token, GL_TEXTURE_2D);
resource->is_overlay_candidate = false;
// The mailbox texture will be released when no longer used by the
// compositor.
resource_manager->SetResourceReleaseCallback(
resource->id,
base::BindOnce(&Buffer::Texture::Release, base::Unretained(texture),
base::BindOnce(&Buffer::ReleaseTexture, AsWeakPtr(),
std::move(texture_))));
return true;
}
void Buffer::SkipLegacyRelease() {
legacy_release_skippable_ = true;
}
void Buffer::OnAttach() {
DLOG_IF(WARNING, attach_count_ && !legacy_release_skippable_)
<< "Reattaching a buffer that is already attached to another surface.";
TRACE_EVENT2("exo", "Buffer::OnAttach", "buffer_id",
static_cast<const void*>(gfx_buffer()), "count", attach_count_);
++attach_count_;
}
void Buffer::OnDetach() {
DCHECK_GT(attach_count_, 0u);
TRACE_EVENT2("exo", "Buffer::OnAttach", "buffer_id",
static_cast<const void*>(gfx_buffer()), "count", attach_count_);
--attach_count_;
// Release buffer if no longer attached to a surface and content has been
// released.
if (!attach_count_ && release_contents_callback_.IsCancelled())
Release();
}
gfx::Size Buffer::GetSize() const {
return gpu_memory_buffer_->GetSize();
}
gfx::BufferFormat Buffer::GetFormat() const {
return gpu_memory_buffer_->GetFormat();
}
SkColor4f Buffer::GetColor() const {
return SkColors::kBlack;
}
#if BUILDFLAG(USE_ARC_PROTECTED_MEDIA)
bool Buffer::NeedsHardwareProtection() {
// We don't indicate protection is needed in the UNKNOWN state because we have
// not seen a pixmap yet that could be protected.
return protected_buffer_state_ == ProtectedBufferState::PROTECTED ||
protected_buffer_state_ == ProtectedBufferState::QUERYING;
}
#endif // BUILDFLAG(USE_ARC_PROTECTED_MEDIA)
////////////////////////////////////////////////////////////////////////////////
// Buffer, private:
void Buffer::Release() {
TRACE_EVENT_ASYNC_END0("exo", kBufferInUse, gpu_memory_buffer_.get());
// Run release callback to notify the client that buffer has been released.
if (!release_callback_.is_null() && !legacy_release_skippable_) {
release_callback_.Run();
}
}
void Buffer::ReleaseTexture(std::unique_ptr<Texture> texture,
gfx::GpuFenceHandle release_fence) {
// Buffer was composited - we should not receive a release fence.
DCHECK(release_fence.is_null());
texture_ = std::move(texture);
}
void Buffer::ReleaseContentsTexture(std::unique_ptr<Texture> texture,
base::OnceClosure callback,
uint64_t commit_id,
gfx::GpuFenceHandle release_fence) {
contents_texture_ = std::move(texture);
MaybeRunPerCommitRelease(commit_id, std::move(release_fence),
std::move(callback));
}
void Buffer::ReleaseContents() {
TRACE_EVENT1("exo", "Buffer::ReleaseContents", "buffer_id",
static_cast<const void*>(gfx_buffer()));
// Cancel callback to indicate that buffer has been released.
release_contents_callback_.Cancel();
if (attach_count_) {
TRACE_EVENT_ASYNC_STEP_INTO0("exo", kBufferInUse, gpu_memory_buffer_.get(),
"attached");
} else {
// Release buffer if not attached to surface.
Release();
}
}
void Buffer::MaybeRunPerCommitRelease(
uint64_t commit_id,
gfx::GpuFenceHandle release_fence,
base::OnceClosure buffer_release_callback) {
auto iter = pending_explicit_releases_.find(commit_id);
if (iter != pending_explicit_releases_.end()) {
std::move(iter->second).Run(release_fence.Clone());
pending_explicit_releases_.erase(iter);
}
// We are still required to send these wl_buffer.release events even if
// the client supports explicit synchronization.
if (!buffer_release_callback) {
return;
}
if (release_fence.is_null() || legacy_release_skippable_) {
std::move(buffer_release_callback).Run();
} else {
// Watching the release fence's fd results in a context switch to the I/O
// thread. That may steal thread time from other applications, which can
// do something useful during that time. Moreover, most of the time the
// fence can have already been signalled. Thus, only watch the fence is
// readable iff it hasn't been signalled yet.
base::TimeTicks ticks;
auto status =
gfx::GpuFence::GetStatusChangeTime(release_fence.Peek(), &ticks);
if (status == gfx::GpuFence::kSignaled) {
std::move(buffer_release_callback).Run();
return;
}
auto controller = base::FileDescriptorWatcher::WatchReadable(
release_fence.Peek(),
base::BindRepeating(&Buffer::FenceSignalled, AsWeakPtr(), commit_id));
buffer_releases_.emplace(
commit_id,
BufferRelease(std::move(release_fence), std::move(controller),
std::move(buffer_release_callback)));
}
}
void Buffer::FenceSignalled(uint64_t commit_id) {
auto iter = buffer_releases_.find(commit_id);
DCHECK(iter != buffer_releases_.end());
std::move(iter->second.buffer_release_callback).Run();
buffer_releases_.erase(iter);
}
SkBitmap Buffer::CreateBitmap() {
SkBitmap bitmap;
if (!gpu_memory_buffer_) {
return bitmap;
}
SkColorType color_type = GetColorTypeForBitmapCreation(GetFormat());
if (color_type == SkColorType::kUnknown_SkColorType) {
return bitmap;
}
if (!gpu_memory_buffer_->Map()) {
return bitmap;
}
gfx::Size size = gpu_memory_buffer_->GetSize();
SkImageInfo image_info = SkImageInfo::Make(size.width(), size.height(),
color_type, kPremul_SkAlphaType);
SkPixmap pixmap = SkPixmap(image_info, gpu_memory_buffer_->memory(0),
gpu_memory_buffer_->stride(0));
bitmap.allocPixels(image_info);
bitmap.writePixels(pixmap);
bitmap.setImmutable();
gpu_memory_buffer_->Unmap();
return bitmap;
}
#if BUILDFLAG(USE_ARC_PROTECTED_MEDIA)
void Buffer::OnIsProtectedNativePixmapHandle(bool is_protected) {
protected_buffer_state_ = is_protected ? ProtectedBufferState::PROTECTED
: ProtectedBufferState::UNPROTECTED;
}
#endif // BUILDFLAG(USE_ARC_PROTECTED_MEDIA)
SolidColorBuffer::SolidColorBuffer(const SkColor4f& color,
const gfx::Size& size)
: Buffer(nullptr), color_(color), size_(size) {}
SolidColorBuffer::~SolidColorBuffer() = default;
bool SolidColorBuffer::ProduceTransferableResource(
FrameSinkResourceManager* resource_manager,
std::unique_ptr<gfx::GpuFence> acquire_fence,
bool secure_output_only,
viz::TransferableResource* resource,
gfx::ColorSpace color_space,
ProtectedNativePixmapQueryDelegate* protected_native_pixmap_query,
PerCommitExplicitReleaseCallback per_commit_explicit_release_callback) {
if (per_commit_explicit_release_callback) {
std::move(per_commit_explicit_release_callback)
.Run(/*release_fence=*/gfx::GpuFenceHandle());
}
return false;
}
SkColor4f SolidColorBuffer::GetColor() const {
return color_;
}
gfx::Size SolidColorBuffer::GetSize() const {
return size_;
}
} // namespace exo
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