Move GPU device/driver info related code from content to gpu.

content/gpu/gpu_info_collector.cc

-// 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.
-
-#include "content/gpu/gpu_info_collector.h"
-
-#include <string>
-#include <vector>
-
-#include "base/debug/trace_event.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/string_number_conversions.h"
-#include "base/strings/string_piece.h"
-#include "base/strings/string_split.h"
-#include "ui/gl/gl_bindings.h"
-#include "ui/gl/gl_context.h"
-#include "ui/gl/gl_surface.h"
-
-namespace {
-
-scoped_refptr<gfx::GLSurface> InitializeGLSurface() {
-  scoped_refptr<gfx::GLSurface> surface(
-      gfx::GLSurface::CreateOffscreenGLSurface(false, gfx::Size(1, 1)));
-  if (!surface) {
-    LOG(ERROR) << "gfx::GLContext::CreateOffscreenGLSurface failed";
-    return NULL;
-  }
-
-  return surface;
-}
-
-scoped_refptr<gfx::GLContext> InitializeGLContext(gfx::GLSurface* surface) {
-
-  scoped_refptr<gfx::GLContext> context(
-      gfx::GLContext::CreateGLContext(NULL,
-                                      surface,
-                                      gfx::PreferIntegratedGpu));
-  if (!context) {
-    LOG(ERROR) << "gfx::GLContext::CreateGLContext failed";
-    return NULL;
-  }
-
-  if (!context->MakeCurrent(surface)) {
-    LOG(ERROR) << "gfx::GLContext::MakeCurrent() failed";
-    return NULL;
-  }
-
-  return context;
-}
-
-std::string GetGLString(unsigned int pname) {
-  const char* gl_string =
-      reinterpret_cast<const char*>(glGetString(pname));
-  if (gl_string)
-    return std::string(gl_string);
-  return std::string();
-}
-
-// Return a version string in the format of "major.minor".
-std::string GetVersionFromString(const std::string& version_string) {
-  size_t begin = version_string.find_first_of("0123456789");
-  if (begin != std::string::npos) {
-    size_t end = version_string.find_first_not_of("01234567890.", begin);
-    std::string sub_string;
-    if (end != std::string::npos)
-      sub_string = version_string.substr(begin, end - begin);
-    else
-      sub_string = version_string.substr(begin);
-    std::vector<std::string> pieces;
-    base::SplitString(sub_string, '.', &pieces);
-    if (pieces.size() >= 2)
-      return pieces[0] + "." + pieces[1];
-  }
-  return std::string();
-}
-
-}  // namespace anonymous
-
-namespace gpu_info_collector {
-
-bool CollectGraphicsInfoGL(content::GPUInfo* gpu_info) {
-  TRACE_EVENT0("startup", "gpu_info_collector::CollectGraphicsInfoGL");
-  if (!gfx::GLSurface::InitializeOneOff()) {
-    LOG(ERROR) << "gfx::GLSurface::InitializeOneOff() failed";
-    return false;
-  }
-
-  scoped_refptr<gfx::GLSurface> surface(InitializeGLSurface());
-  if (!surface)
-    return false;
-
-  scoped_refptr<gfx::GLContext> context(InitializeGLContext(surface.get()));
-  if (!context)
-    return false;
-
-  gpu_info->gl_renderer = GetGLString(GL_RENDERER);
-  gpu_info->gl_vendor = GetGLString(GL_VENDOR);
-  gpu_info->gl_extensions = GetGLString(GL_EXTENSIONS);
-  gpu_info->gl_version_string = GetGLString(GL_VERSION);
-  std::string glsl_version_string = GetGLString(GL_SHADING_LANGUAGE_VERSION);
-  // TODO(kbr): remove once the destruction of a current context automatically
-  // clears the current context.
-  context->ReleaseCurrent(surface.get());
-
-  gpu_info->gl_version = GetVersionFromString(gpu_info->gl_version_string);
-  std::string glsl_version = GetVersionFromString(glsl_version_string);
-  gpu_info->pixel_shader_version = glsl_version;
-  gpu_info->vertex_shader_version = glsl_version;
-
-  return CollectDriverInfoGL(gpu_info);
-}
-
-void MergeGPUInfoGL(content::GPUInfo* basic_gpu_info,
-                    const content::GPUInfo& context_gpu_info) {
-  DCHECK(basic_gpu_info);
-  basic_gpu_info->gl_renderer = context_gpu_info.gl_renderer;
-  basic_gpu_info->gl_vendor = context_gpu_info.gl_vendor;
-  basic_gpu_info->gl_version_string = context_gpu_info.gl_version_string;
-  basic_gpu_info->gl_extensions = context_gpu_info.gl_extensions;
-  basic_gpu_info->gl_version = context_gpu_info.gl_version;
-  basic_gpu_info->pixel_shader_version =
-      context_gpu_info.pixel_shader_version;
-  basic_gpu_info->vertex_shader_version =
-      context_gpu_info.vertex_shader_version;
-
-  if (!context_gpu_info.driver_vendor.empty())
-    basic_gpu_info->driver_vendor = context_gpu_info.driver_vendor;
-  if (!context_gpu_info.driver_version.empty())
-    basic_gpu_info->driver_version = context_gpu_info.driver_version;
-
-  basic_gpu_info->can_lose_context = context_gpu_info.can_lose_context;
-  basic_gpu_info->sandboxed = context_gpu_info.sandboxed;
-  basic_gpu_info->gpu_accessible = context_gpu_info.gpu_accessible;
-  basic_gpu_info->finalized = context_gpu_info.finalized;
-  basic_gpu_info->initialization_time = context_gpu_info.initialization_time;
-}
-
-}  // namespace gpu_info_collector
-