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// Copyright 2014 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 <X11/Xlib.h>
#include "base/logging.h"
#include "gpu/config/gpu_info_collector_linux.h"
#include "third_party/libXNVCtrl/NVCtrl.h"
#include "third_party/libXNVCtrl/NVCtrlLib.h"
#include "ui/gfx/x/x11_types.h"
namespace gpu {
// Use NVCtrl extention to query NV driver version.
// Return empty string on failing.
std::string CollectDriverVersionNVidia() {
Display* display = gfx::GetXDisplay();
if (!display) {
LOG(ERROR) << "XOpenDisplay failed.";
return std::string();
}
int event_base = 0, error_base = 0;
if (!XNVCTRLQueryExtension(display, &event_base, &error_base)) {
VLOG(1) << "NVCtrl extension does not exist.";
return std::string();
}
int screen_count = ScreenCount(display);
for (int screen = 0; screen < screen_count; ++screen) {
char* buffer = NULL;
if (XNVCTRLIsNvScreen(display, screen) &&
XNVCTRLQueryStringAttribute(display, screen, 0,
NV_CTRL_STRING_NVIDIA_DRIVER_VERSION,
&buffer)) {
std::string driver_version(buffer);
XFree(buffer);
return driver_version;
}
}
return std::string();
}
} // namespace gpu
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