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// 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.
// Provides access to the GPU information for the system
// on which chrome is currently running.
#include <stdint.h>
#include <string>
#include <vector>
#include "base/time/time.h"
#include "base/version.h"
#include "build/build_config.h"
#include "gpu/config/dx_diag_node.h"
#include "gpu/gpu_export.h"
#include "ui/gfx/geometry/size.h"
#if defined(USE_X11)
typedef unsigned long VisualID;
namespace gpu {
// Video profile. This *must* match media::VideoCodecProfile.
enum VideoCodecProfile {
// Specification of a decoding profile supported by a hardware decoder.
struct GPU_EXPORT VideoDecodeAcceleratorSupportedProfile {
VideoCodecProfile profile;
gfx::Size max_resolution;
gfx::Size min_resolution;
bool encrypted_only;
using VideoDecodeAcceleratorSupportedProfiles =
struct GPU_EXPORT VideoDecodeAcceleratorCapabilities {
const VideoDecodeAcceleratorCapabilities& other);
VideoDecodeAcceleratorSupportedProfiles supported_profiles;
uint32_t flags;
// Specification of an encoding profile supported by a hardware encoder.
struct GPU_EXPORT VideoEncodeAcceleratorSupportedProfile {
VideoCodecProfile profile;
gfx::Size max_resolution;
uint32_t max_framerate_numerator;
uint32_t max_framerate_denominator;
using VideoEncodeAcceleratorSupportedProfiles =
// Common overlay formats that we're interested in. Must match the OverlayFormat
// enum in //tools/metrics/histograms/enums.xml. Mapped to corresponding DXGI
// formats in DirectCompositionSurfaceWin.
enum class OverlayFormat { kBGRA = 0, kYUY2 = 1, kNV12 = 2, kMaxValue = kNV12 };
GPU_EXPORT const char* OverlayFormatToString(OverlayFormat format);
struct GPU_EXPORT OverlayCapability {
OverlayFormat format;
bool is_scaling_supported;
bool operator==(const OverlayCapability& other) const;
using OverlayCapabilities = std::vector<OverlayCapability>;
struct GPU_EXPORT Dx12VulkanVersionInfo {
bool IsEmpty() const { return !d3d12_feature_level && !vulkan_version; }
// True if the GPU driver supports DX12.
bool supports_dx12 = false;
// True if the GPU driver supports Vulkan.
bool supports_vulkan = false;
// The supported d3d feature level in the gpu driver;
uint32_t d3d12_feature_level = 0;
// The support Vulkan API version in the gpu driver;
uint32_t vulkan_version = 0;
struct GPU_EXPORT GPUInfo {
struct GPU_EXPORT GPUDevice {
GPUDevice(const GPUDevice& other);
GPUDevice(GPUDevice&& other) noexcept;
~GPUDevice() noexcept;
GPUDevice& operator=(const GPUDevice& other);
GPUDevice& operator=(GPUDevice&& other) noexcept;
// The DWORD (uint32_t) representing the graphics card vendor id.
uint32_t vendor_id;
// The DWORD (uint32_t) representing the graphics card device id.
// Device ids are unique to vendor, not to one another.
uint32_t device_id;
// Whether this GPU is the currently used one.
// Currently this field is only supported and meaningful on OS X.
bool active;
// The strings that describe the GPU.
// In Linux these strings are obtained through libpci.
// In Win/MacOSX, these two strings are not filled at the moment.
// In Android, these are respectively GL_VENDOR and GL_RENDERER.
std::string vendor_string;
std::string device_string;
std::string driver_vendor;
std::string driver_version;
std::string driver_date;
// NVIDIA CUDA compute capability, major version. 0 if undetermined. Can be
// used to determine the hardware generation that the GPU belongs to.
int cuda_compute_capability_major;
GPUInfo(const GPUInfo& other);
// The currently active gpu.
GPUDevice& active_gpu();
const GPUDevice& active_gpu() const;
bool IsInitialized() const;
// The amount of time taken to get from the process starting to the message
// loop being pumped.
base::TimeDelta initialization_time;
// Computer has NVIDIA Optimus
bool optimus;
// Computer has AMD Dynamic Switchable Graphics
bool amd_switchable;
// Primary GPU, for exmaple, the discrete GPU in a dual GPU machine.
GPUDevice gpu;
// Secondary GPUs, for example, the integrated GPU in a dual GPU machine.
std::vector<GPUDevice> secondary_gpus;
// The version of the pixel/fragment shader used by the gpu.
std::string pixel_shader_version;
// The version of the vertex shader used by the gpu.
std::string vertex_shader_version;
// The maximum multisapling sample count, either through ES3 or
// EXT_multisampled_render_to_texture MSAA.
std::string max_msaa_samples;
// The machine model identifier. They can contain any character, including
// whitespaces. Currently it is supported on MacOSX and Android.
// Android examples: "Naxus 5", "XT1032".
// On MacOSX, the version is stripped out of the model identifier, for
// example, the original identifier is "MacBookPro7,2", and we put
// "MacBookPro" as machine_model_name, and "7.2" as machine_model_version.
std::string machine_model_name;
// The version of the machine model. Currently it is supported on MacOSX.
// See machine_model_name's comment.
std::string machine_model_version;
// The GL_VERSION string.
std::string gl_version;
// The GL_VENDOR string.
std::string gl_vendor;
// The GL_RENDERER string.
std::string gl_renderer;
// The GL_EXTENSIONS string.
std::string gl_extensions;
// GL window system binding vendor. "" if not available.
std::string gl_ws_vendor;
// GL window system binding version. "" if not available.
std::string gl_ws_version;
// GL window system binding extensions. "" if not available.
std::string gl_ws_extensions;
// GL reset notification strategy as defined by GL_ARB_robustness. 0 if GPU
// reset detection or notification not available.
uint32_t gl_reset_notification_strategy;
bool software_rendering;
// Whether the driver uses direct rendering. True on most platforms, false on
// X11 when using remote X.
bool direct_rendering;
// Whether the gpu process is running in a sandbox.
bool sandboxed;
// True if the GPU is running in the browser process instead of its own.
bool in_process_gpu;
// True if the GPU process is using the passthrough command decoder.
bool passthrough_cmd_decoder;
// True only on android when extensions for threaded mailbox sharing are
// present. Threaded mailbox sharing is used on Android only, so this check
// is only implemented on Android.
bool can_support_threaded_texture_mailbox = false;
#if defined(OS_WIN)
// True if we use direct composition surfaces on Windows.
bool direct_composition = false;
// True if the current set of outputs supports overlays.
bool supports_overlays = false;
OverlayCapabilities overlay_capabilities;
// The information returned by the DirectX Diagnostics Tool.
DxDiagNode dx_diagnostics;
Dx12VulkanVersionInfo dx12_vulkan_version_info;
VideoDecodeAcceleratorCapabilities video_decode_accelerator_capabilities;
bool jpeg_decode_accelerator_supported;
#if defined(USE_X11)
VisualID system_visual;
VisualID rgba_visual;
bool oop_rasterization_supported;
// Note: when adding new members, please remember to update EnumerateFields
// in
// In conjunction with EnumerateFields, this allows the embedder to
// enumerate the values in this structure without having to embed
// references to its specific member variables. This simplifies the
// addition of new fields to this type.
class Enumerator {
// The following methods apply to the "current" object. Initially this
// is the root object, but calls to BeginGPUDevice/EndGPUDevice and
// BeginAuxAttributes/EndAuxAttributes change the object to which these
// calls should apply.
virtual void AddInt64(const char* name, int64_t value) = 0;
virtual void AddInt(const char* name, int value) = 0;
virtual void AddString(const char* name, const std::string& value) = 0;
virtual void AddBool(const char* name, bool value) = 0;
virtual void AddTimeDeltaInSecondsF(const char* name,
const base::TimeDelta& value) = 0;
// Markers indicating that a GPUDevice is being described.
virtual void BeginGPUDevice() = 0;
virtual void EndGPUDevice() = 0;
// Markers indicating that a VideoDecodeAcceleratorSupportedProfile is
// being described.
virtual void BeginVideoDecodeAcceleratorSupportedProfile() = 0;
virtual void EndVideoDecodeAcceleratorSupportedProfile() = 0;
// Markers indicating that a VideoEncodeAcceleratorSupportedProfile is
// being described.
virtual void BeginVideoEncodeAcceleratorSupportedProfile() = 0;
virtual void EndVideoEncodeAcceleratorSupportedProfile() = 0;
// Markers indicating that "auxiliary" attributes of the GPUInfo
// (according to the DevTools protocol) are being described.
virtual void BeginAuxAttributes() = 0;
virtual void EndAuxAttributes() = 0;
virtual void BeginOverlayCapability() = 0;
virtual void EndOverlayCapability() = 0;
virtual void BeginDx12VulkanVersionInfo() = 0;
virtual void EndDx12VulkanVersionInfo() = 0;
virtual ~Enumerator() = default;
// Outputs the fields in this structure to the provided enumerator.
void EnumerateFields(Enumerator* enumerator) const;
} // namespace gpu