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

chrome/gpu/gpu_info_collector_linux.cc

 // 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.
 
 #include "chrome/gpu/gpu_info_collector.h"
 
 #include <dlfcn.h>
 #include <vector>
 
 #include "app/gfx/gl/gl_bindings.h"
@@ skipping 119 matching lines @@
   DCHECK(gpu_info);
 
   // TODO(zmo): need to consider the case where we are running on top of
   // desktop GL and GL_ARB_robustness extension is available.
   gpu_info->SetCanLoseContext(
       gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2);
   gpu_info->SetLevel(GPUInfo::kComplete);
   return CollectGraphicsInfoGL(gpu_info);
 }
 
+bool CollectPreliminaryGraphicsInfo(GPUInfo* gpu_info) {
+  DCHECK(gpu_info);
+
+  gpu_info->SetLevel(GPUInfo::kPartial);
+
+  bool rt = true;
+  if (!CollectVideoCardInfo(gpu_info))
+    rt = false;
+
+  // TODO(zmo): if vendor is ATI, consider passing /etc/ati/amdpcsdb.default
+  // for driver information.
+
+  return rt;
+}
+
 bool CollectVideoCardInfo(GPUInfo* gpu_info) {
   DCHECK(gpu_info);
 
   // TODO(zmo): be more flexible about library name.
   PciInterface* interface = InitializeLibPci("libpci.so.3");
   if (interface == NULL)
     return false;
 
   PciAccess* access = (interface->pci_alloc)();
   DCHECK(access != NULL);
@@ skipping 83 matching lines @@
   if (pos == 0)
     return false;
   if (pos != std::string::npos)
     driver_version = driver_version.substr(0, pos);
 
   gpu_info->SetDriverInfo(pieces[1], driver_version);
   return true;
 }
 
 }  // namespace gpu_info_collector