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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/command_buffer/service/shared_image/shared_memory_image_backing.h"
#include "base/logging.h"
#include "base/memory/scoped_refptr.h"
#include "base/notimplemented.h"
#include "base/notreached.h"
#include "base/trace_event/process_memory_dump.h"
#include "components/viz/common/resources/resource_sizes.h"
#include "components/viz/common/resources/shared_image_format_utils.h"
#include "gpu/command_buffer/common/mailbox.h"
#include "gpu/command_buffer/common/shared_image_trace_utils.h"
#include "gpu/command_buffer/common/shared_image_usage.h"
#include "gpu/command_buffer/service/memory_tracking.h"
#include "gpu/command_buffer/service/shared_context_state.h"
#include "gpu/command_buffer/service/shared_image/shared_image_format_service_utils.h"
#include "gpu/command_buffer/service/shared_image/shared_image_manager.h"
#include "gpu/command_buffer/service/shared_image/shared_image_representation.h"
#include "gpu/command_buffer/service/shared_memory_region_wrapper.h"
#include "third_party/skia/include/core/SkAlphaType.h"
#include "third_party/skia/include/core/SkColorSpace.h"
#include "third_party/skia/include/core/SkColorType.h"
#include "third_party/skia/include/core/SkImageInfo.h"
#include "third_party/skia/include/core/SkPixmap.h"
#include "ui/gfx/buffer_format_util.h"
#include "ui/gfx/color_space.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/geometry/skia_conversions.h"
namespace gpu {
namespace {
class MemoryImageRepresentationImpl : public MemoryImageRepresentation {
public:
MemoryImageRepresentationImpl(SharedImageManager* manager,
SharedImageBacking* backing,
MemoryTypeTracker* tracker)
: MemoryImageRepresentation(manager, backing, tracker) {}
protected:
SkPixmap BeginReadAccess() override {
DCHECK(format().is_single_plane());
return shared_image_shared_memory()->pixmaps()[0];
}
private:
SharedMemoryImageBacking* shared_image_shared_memory() {
return static_cast<SharedMemoryImageBacking*>(backing());
}
};
class OverlayImageRepresentationImpl : public OverlayImageRepresentation {
public:
OverlayImageRepresentationImpl(SharedImageManager* manager,
SharedImageBacking* backing,
MemoryTypeTracker* tracker)
: OverlayImageRepresentation(manager, backing, tracker) {}
~OverlayImageRepresentationImpl() override = default;
private:
bool BeginReadAccess(gfx::GpuFenceHandle& acquire_fence) override {
return true;
}
void EndReadAccess(gfx::GpuFenceHandle release_fence) override {}
#if BUILDFLAG(IS_WIN)
std::optional<gl::DCLayerOverlayImage> GetDCLayerOverlayImage() override {
// This should only be called for the backing which references the Y plane,
// eg. plane_index=0, of an NV12 shmem GMB - see allow_shm_overlay in
// SharedImageFactory. This allows access to both Y and UV planes.
const auto& shm_wrapper = static_cast<SharedMemoryImageBacking*>(backing())
->shared_memory_wrapper();
return std::make_optional<gl::DCLayerOverlayImage>(
size(), shm_wrapper.GetMemoryPlanes(), shm_wrapper.GetStride(0));
}
#endif
};
} // namespace
SharedMemoryImageBacking::~SharedMemoryImageBacking() = default;
void SharedMemoryImageBacking::Update(std::unique_ptr<gfx::GpuFence> in_fence) {
// Intentionally no-op for now. Will be called by clients later
}
SharedImageBackingType SharedMemoryImageBacking::GetType() const {
return SharedImageBackingType::kSharedMemory;
}
gfx::Rect SharedMemoryImageBacking::ClearedRect() const {
NOTREACHED();
}
void SharedMemoryImageBacking::SetClearedRect(const gfx::Rect& cleared_rect) {
NOTREACHED();
}
gfx::GpuMemoryBufferHandle
SharedMemoryImageBacking::GetGpuMemoryBufferHandle() {
return handle_.Clone();
}
const SharedMemoryRegionWrapper&
SharedMemoryImageBacking::shared_memory_wrapper() {
return shared_memory_wrapper_;
}
const std::vector<SkPixmap>& SharedMemoryImageBacking::pixmaps() {
return pixmaps_;
}
std::unique_ptr<DawnImageRepresentation> SharedMemoryImageBacking::ProduceDawn(
SharedImageManager* manager,
MemoryTypeTracker* tracker,
const wgpu::Device& device,
wgpu::BackendType backend_type,
std::vector<wgpu::TextureFormat> view_formats,
scoped_refptr<SharedContextState> context_state) {
NOTIMPLEMENTED_LOG_ONCE();
return nullptr;
}
std::unique_ptr<GLTextureImageRepresentation>
SharedMemoryImageBacking::ProduceGLTexture(SharedImageManager* manager,
MemoryTypeTracker* tracker) {
NOTIMPLEMENTED_LOG_ONCE();
return nullptr;
}
std::unique_ptr<GLTexturePassthroughImageRepresentation>
SharedMemoryImageBacking::ProduceGLTexturePassthrough(
SharedImageManager* manager,
MemoryTypeTracker* tracker) {
NOTIMPLEMENTED_LOG_ONCE();
return nullptr;
}
std::unique_ptr<SkiaGaneshImageRepresentation>
SharedMemoryImageBacking::ProduceSkiaGanesh(
SharedImageManager* manager,
MemoryTypeTracker* tracker,
scoped_refptr<SharedContextState> context_state) {
NOTIMPLEMENTED_LOG_ONCE();
return nullptr;
}
std::unique_ptr<OverlayImageRepresentation>
SharedMemoryImageBacking::ProduceOverlay(SharedImageManager* manager,
MemoryTypeTracker* tracker) {
if (!shared_memory_wrapper_.IsValid())
return nullptr;
return std::make_unique<OverlayImageRepresentationImpl>(manager, this,
tracker);
}
std::unique_ptr<MemoryImageRepresentation>
SharedMemoryImageBacking::ProduceMemory(SharedImageManager* manager,
MemoryTypeTracker* tracker) {
if (!shared_memory_wrapper_.IsValid())
return nullptr;
return std::make_unique<MemoryImageRepresentationImpl>(manager, this,
tracker);
}
base::trace_event::MemoryAllocatorDump* SharedMemoryImageBacking::OnMemoryDump(
const std::string& dump_name,
base::trace_event::MemoryAllocatorDumpGuid client_guid,
base::trace_event::ProcessMemoryDump* pmd,
uint64_t client_tracing_id) {
auto* dump = SharedImageBacking::OnMemoryDump(dump_name, client_guid, pmd,
client_tracing_id);
// Add a |shared_memory_guid| which expresses shared ownership between the
// various GPU dumps.
auto shared_memory_guid = shared_memory_wrapper_.GetMappingGuid();
if (!shared_memory_guid.is_empty()) {
pmd->CreateSharedMemoryOwnershipEdge(
client_guid, shared_memory_guid,
static_cast<int>(TracingImportance::kNotOwner));
}
return dump;
}
SharedMemoryImageBacking::SharedMemoryImageBacking(
const Mailbox& mailbox,
viz::SharedImageFormat format,
const gfx::Size& size,
const gfx::ColorSpace& color_space,
GrSurfaceOrigin surface_origin,
SkAlphaType alpha_type,
SharedImageUsageSet usage,
std::string debug_label,
SharedMemoryRegionWrapper wrapper,
gfx::GpuMemoryBufferHandle handle,
std::optional<gfx::BufferUsage> buffer_usage)
: SharedImageBacking(mailbox,
format,
size,
color_space,
surface_origin,
alpha_type,
usage,
std::move(debug_label),
format.EstimatedSizeInBytes(size),
false,
std::move(buffer_usage)),
shared_memory_wrapper_(std::move(wrapper)),
handle_(std::move(handle)) {
DCHECK(shared_memory_wrapper_.IsValid());
for (int plane = 0; plane < format.NumberOfPlanes(); ++plane) {
gfx::Size plane_size = format.GetPlaneSize(plane, size);
auto info = SkImageInfo::Make(gfx::SizeToSkISize(plane_size),
viz::ToClosestSkColorType(format, plane),
alpha_type, color_space.ToSkColorSpace());
pixmaps_.push_back(shared_memory_wrapper_.MakePixmapForPlane(info, plane));
}
}
} // namespace gpu
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