mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
// Copyright (c) 2012 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 "ui/gl/gpu_switching_manager.h"
|
|
|
|
#include "base/command_line.h"
|
|
#include "base/logging.h"
|
|
#include "ui/gl/gl_switches.h"
|
|
|
|
namespace ui {
|
|
|
|
// static
|
|
GpuSwitchingManager* GpuSwitchingManager::GetInstance() {
|
|
return Singleton<GpuSwitchingManager>::get();
|
|
}
|
|
|
|
GpuSwitchingManager::GpuSwitchingManager()
|
|
: gpu_switching_option_(gfx::PreferIntegratedGpu),
|
|
gpu_switching_option_set_(false),
|
|
supports_dual_gpus_(false),
|
|
supports_dual_gpus_set_(false),
|
|
gpu_count_(0) {
|
|
}
|
|
|
|
GpuSwitchingManager::~GpuSwitchingManager() {
|
|
}
|
|
|
|
void GpuSwitchingManager::ForceUseOfIntegratedGpu() {
|
|
DCHECK(SupportsDualGpus());
|
|
if (gpu_switching_option_set_) {
|
|
DCHECK_EQ(gpu_switching_option_, gfx::PreferIntegratedGpu);
|
|
} else {
|
|
gpu_switching_option_ = gfx::PreferIntegratedGpu;
|
|
gpu_switching_option_set_ = true;
|
|
}
|
|
}
|
|
|
|
void GpuSwitchingManager::ForceUseOfDiscreteGpu() {
|
|
DCHECK(SupportsDualGpus());
|
|
if (gpu_switching_option_set_) {
|
|
DCHECK_EQ(gpu_switching_option_, gfx::PreferDiscreteGpu);
|
|
} else {
|
|
gpu_switching_option_ = gfx::PreferDiscreteGpu;
|
|
gpu_switching_option_set_ = true;
|
|
}
|
|
}
|
|
|
|
bool GpuSwitchingManager::SupportsDualGpus() {
|
|
if (!supports_dual_gpus_set_) {
|
|
const base::CommandLine& command_line =
|
|
*base::CommandLine::ForCurrentProcess();
|
|
bool flag = false;
|
|
if (command_line.HasSwitch(switches::kSupportsDualGpus)) {
|
|
// GPU process, flag is passed down from browser process.
|
|
std::string flag_string = command_line.GetSwitchValueASCII(
|
|
switches::kSupportsDualGpus);
|
|
if (flag_string == "true") {
|
|
flag = true;
|
|
} else if (flag_string == "false") {
|
|
flag = false;
|
|
} else {
|
|
NOTIMPLEMENTED();
|
|
}
|
|
}
|
|
supports_dual_gpus_ = flag;
|
|
supports_dual_gpus_set_ = true;
|
|
}
|
|
return supports_dual_gpus_;
|
|
}
|
|
|
|
void GpuSwitchingManager::SetGpuCount(size_t gpu_count) {
|
|
gpu_count_ = gpu_count;
|
|
}
|
|
|
|
void GpuSwitchingManager::AddObserver(GpuSwitchingObserver* observer) {
|
|
observer_list_.AddObserver(observer);
|
|
}
|
|
|
|
void GpuSwitchingManager::RemoveObserver(GpuSwitchingObserver* observer) {
|
|
observer_list_.RemoveObserver(observer);
|
|
}
|
|
|
|
void GpuSwitchingManager::NotifyGpuSwitched() {
|
|
FOR_EACH_OBSERVER(GpuSwitchingObserver, observer_list_, OnGpuSwitched());
|
|
}
|
|
|
|
gfx::GpuPreference GpuSwitchingManager::AdjustGpuPreference(
|
|
gfx::GpuPreference gpu_preference) {
|
|
if (!gpu_switching_option_set_)
|
|
return gpu_preference;
|
|
return gpu_switching_option_;
|
|
}
|
|
|
|
} // namespace ui
|