// Copyright (c) 2011 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.

#ifndef CONTENT_COMMON_GPU_GPU_INFO_H_
#define CONTENT_COMMON_GPU_GPU_INFO_H_
#pragma once

// Provides access to the GPU information for the system
// on which chrome is currently running.

#include <string>

#include "base/basictypes.h"
#include "base/time.h"
#include "build/build_config.h"
#include "content/common/dx_diag_node.h"
#include "content/common/content_export.h"

struct CONTENT_EXPORT GPUInfo {
  GPUInfo();
  ~GPUInfo();

  // If it's the same GPU, i.e., device id and vendor id are the same, then
  // copy over the fields that are not set yet and ignore the rest.
  // If it's a different GPU, then reset and copy over everything.
  // Return true if something changes that may affect blacklisting; currently
  // they are device_id, vendor_id, driver_vendor, driver_version, driver_date,
  // and gl_renderer.
  bool Merge(const GPUInfo& other);

  // Whether more GPUInfo fields might be collected in the future.
  bool finalized;

  // The amount of time taken to get from the process starting to the message
  // loop being pumped.
  base::TimeDelta initialization_time;

  // The DWORD (uint32) representing the graphics card vendor id.
  uint32 vendor_id;

  // The DWORD (uint32) representing the graphics card device id.  Device ids
  // are unique to vendor, not to one another.
  uint32 device_id;

  // The vendor of the graphics driver currently installed.
  std::string driver_vendor;

  // The version of the graphics driver currently installed.
  std::string driver_version;

  // The date of the graphics driver currently installed.
  std::string driver_date;

  // 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 version of OpenGL we are using.
  // TODO(zmo): should be able to tell if it's GL or GLES.
  std::string gl_version;

  // The GL_VERSION string.  "" if we are not using OpenGL.
  std::string gl_version_string;

  // The GL_VENDOR string.  "" if we are not using OpenGL.
  std::string gl_vendor;

  // The GL_RENDERER string.  "" if we are not using OpenGL.
  std::string gl_renderer;

  // The GL_EXTENSIONS string.  "" if we are not using OpenGL.
  std::string gl_extensions;

  // The device semantics, i.e. whether the Vista and Windows 7 specific
  // semantics are available.
  bool can_lose_context;

#if defined(OS_WIN)
  // The information returned by the DirectX Diagnostics Tool.
  DxDiagNode dx_diagnostics;
#endif
};

#endif  // CONTENT_COMMON_GPU_GPU_INFO_H_