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// Copyright 2020 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/external_semaphore.h"
#include "base/functional/bind.h"
#include "base/logging.h"
#include "build/build_config.h"
#include "components/viz/common/gpu/vulkan_context_provider.h"
#include "gpu/vulkan/vulkan_device_queue.h"
#include "gpu/vulkan/vulkan_function_pointers.h"
#include "gpu/vulkan/vulkan_implementation.h"
#include "gpu/vulkan/vulkan_util.h"
#include "ui/gl/gl_bindings.h"
#define GL_HANDLE_TYPE_OPAQUE_FD_EXT 0x9586
#define GL_HANDLE_TYPE_OPAQUE_WIN32_EXT 0x9587
#define GL_HANDLE_TYPE_ZIRCON_VMO_ANGLE 0x93AE
#define GL_HANDLE_TYPE_ZIRCON_EVENT_ANGLE 0x93AF
namespace gpu {
namespace {
GLuint ImportSemaphoreHandleToGLSemaphore(SemaphoreHandle handle) {
if (!handle.is_valid())
return 0;
#if BUILDFLAG(IS_POSIX)
if (handle.vk_handle_type() !=
VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_FD_BIT) {
DLOG(ERROR) << "Importing semaphore handle of unexpected type:"
<< handle.vk_handle_type();
return 0;
}
base::ScopedFD fd = handle.TakeHandle();
gl::GLApi* api = gl::g_current_gl_context;
GLuint gl_semaphore;
api->glGenSemaphoresEXTFn(1, &gl_semaphore);
api->glImportSemaphoreFdEXTFn(gl_semaphore, GL_HANDLE_TYPE_OPAQUE_FD_EXT,
fd.release());
return gl_semaphore;
#elif BUILDFLAG(IS_WIN)
if (handle.vk_handle_type() !=
VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_WIN32_BIT) {
DLOG(ERROR) << "Importing semaphore handle of unexpected type:"
<< handle.vk_handle_type();
return 0;
}
auto win32_handle = handle.TakeHandle();
gl::GLApi* api = gl::g_current_gl_context;
GLuint gl_semaphore;
api->glGenSemaphoresEXTFn(1, &gl_semaphore);
api->glImportSemaphoreWin32HandleEXTFn(
gl_semaphore, GL_HANDLE_TYPE_OPAQUE_WIN32_EXT, win32_handle.Take());
return gl_semaphore;
#elif BUILDFLAG(IS_FUCHSIA)
if (handle.vk_handle_type() !=
VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_ZIRCON_EVENT_BIT_FUCHSIA) {
DLOG(ERROR) << "Importing semaphore handle of unexpected type:"
<< handle.vk_handle_type();
return 0;
}
zx::event event = handle.TakeHandle();
gl::GLApi* api = gl::g_current_gl_context;
GLuint gl_semaphore;
api->glGenSemaphoresEXTFn(1, &gl_semaphore);
api->glImportSemaphoreZirconHandleANGLEFn(
gl_semaphore, GL_HANDLE_TYPE_ZIRCON_EVENT_ANGLE, event.release());
return gl_semaphore;
#else
#error Unsupported OS
#endif
}
} // namespace
// static
ExternalSemaphore ExternalSemaphore::Create(
viz::VulkanContextProvider* context_provider) {
VkDevice device = context_provider->GetDeviceQueue()->GetVulkanDevice();
VkSemaphore semaphore = CreateVkOpaqueExternalSemaphore(device);
if (semaphore == VK_NULL_HANDLE)
return {};
auto handle = ExportVkOpaqueExternalSemaphore(device, semaphore);
if (!handle.is_valid()) {
vkDestroySemaphore(device, semaphore, /*pAllocator=*/nullptr);
return {};
}
return ExternalSemaphore(base::PassKey<ExternalSemaphore>(), context_provider,
semaphore, std::move(handle));
}
// static
ExternalSemaphore ExternalSemaphore::CreateFromHandle(
viz::VulkanContextProvider* context_provider,
SemaphoreHandle handle) {
if (!handle.is_valid())
return {};
auto* implementation = context_provider->GetVulkanImplementation();
VkDevice device = context_provider->GetDeviceQueue()->GetVulkanDevice();
VkSemaphore semaphore =
implementation->ImportSemaphoreHandle(device, handle.Duplicate());
if (semaphore == VK_NULL_HANDLE)
return {};
return ExternalSemaphore(base::PassKey<ExternalSemaphore>(), context_provider,
semaphore, std::move(handle));
}
ExternalSemaphore::ExternalSemaphore() = default;
ExternalSemaphore::ExternalSemaphore(ExternalSemaphore&& other) {
*this = std::move(other);
}
ExternalSemaphore::ExternalSemaphore(
base::PassKey<ExternalSemaphore>,
viz::VulkanContextProvider* context_provider,
VkSemaphore semaphore,
SemaphoreHandle handle)
: context_provider_(context_provider),
semaphore_(semaphore),
handle_(std::move(handle)) {}
ExternalSemaphore::~ExternalSemaphore() {
Reset();
}
ExternalSemaphore& ExternalSemaphore::operator=(ExternalSemaphore&& other) {
Reset();
std::swap(context_provider_, other.context_provider_);
std::swap(semaphore_, other.semaphore_);
std::swap(handle_, other.handle_);
std::swap(gl_semaphore_, other.gl_semaphore_);
return *this;
}
void ExternalSemaphore::Reset() {
if (semaphore_ != VK_NULL_HANDLE) {
DCHECK(context_provider_);
VkDevice device = context_provider_->GetDeviceQueue()->GetVulkanDevice();
vkDestroySemaphore(device, semaphore_, /*pAllocator=*/nullptr);
}
if (gl_semaphore_ != 0) {
// We assume there is always one GL context current. If there isn't a
// GL context current, we assume the last GL context is destroyed, in that
// case, we will skip glDeleteSemaphoresEXT().
if (gl::g_current_gl_driver) {
gl::GLApi* const api = gl::g_current_gl_context;
api->glDeleteSemaphoresEXTFn(1, &gl_semaphore_);
}
}
context_provider_ = nullptr;
semaphore_ = VK_NULL_HANDLE;
gl_semaphore_ = 0;
handle_ = {};
}
unsigned int ExternalSemaphore::GetGLSemaphore() {
DCHECK(handle_.is_valid());
if (gl_semaphore_ == 0) {
gl_semaphore_ = ImportSemaphoreHandleToGLSemaphore(handle_.Duplicate());
}
return gl_semaphore_;
}
VkSemaphore ExternalSemaphore::GetVkSemaphore() {
DCHECK(handle_.is_valid());
if (semaphore_ == VK_NULL_HANDLE) {
auto* implementation = context_provider_->GetVulkanImplementation();
VkDevice device = context_provider_->GetDeviceQueue()->GetVulkanDevice();
semaphore_ =
implementation->ImportSemaphoreHandle(device, handle_.Duplicate());
}
return semaphore_;
}
SemaphoreHandle ExternalSemaphore::TakeSemaphoreHandle() {
SemaphoreHandle handle = std::move(handle_);
DCHECK(!handle_.is_valid());
Reset();
return handle;
}
} // namespace gpu
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