Collect as much GPU information as possible without creating a GL/D3D context...

chrome/gpu/gpu_info_collector.h

 // Copyright (c) 2006-2010 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 CHROME_GPU_GPU_INFO_COLLECTOR_H__
 #define CHROME_GPU_GPU_INFO_COLLECTOR_H__
 #pragma once
 
 #include "base/basictypes.h"
 #include "build/build_config.h"
 #include "chrome/common/dx_diag_node.h"
 #include "chrome/common/gpu_info.h"
 
 struct IDirect3D9;
 
 namespace gpu_info_collector {
 
 // Populate variables with necessary graphics card information.
 // Returns true on success.
 bool CollectGraphicsInfo(GPUInfo* gpu_info);
 
+// Similar to CollectGraphicsInfo, only this collects a subset of variables
+// without creating a GL/DirectX context (and without the danger of crashing).
+// The subset each platform collects may be different.
+bool CollectPreliminaryGraphicsInfo(GPUInfo* gpu_info);
+
 #if defined(OS_WIN)
 // Windows provides two ways of doing graphics so we need two ways of
 // collecting info based on what's on a user's machine.
 // The selection between the two methods is done in the cc file.
 
 // A D3D argument is passed in for testing purposes
 bool CollectGraphicsInfoD3D(IDirect3D9* d3d, GPUInfo* gpu_info);
 
 // Collect the DirectX Disagnostics information about the attached displays.
 bool GetDxDiagnostics(DxDiagNode* output);
 #endif
 
 // All platforms have a GL version for collecting information
 bool CollectGraphicsInfoGL(GPUInfo* gpu_info);
 
 // Collect GL and Shading language version information
 bool CollectGLVersionInfo(GPUInfo* gpu_info);
 
 // Platform specific method for collecting vendor and device ids
 bool CollectVideoCardInfo(GPUInfo* gpu_info);
 
 // Each platform stores the driver version on the GL_VERSION string differently
 bool CollectDriverInfo(GPUInfo* gpu_info);
 
 }  // namespace gpu_info_collector
 
 #endif  // CHROME_GPU_GPU_INFO_COLLECTOR_H__