gpu/config/gpu_info_collector_android.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "gpu/config/gpu_info_collector.h"
   6
   7 #include "base/android/build_info.h"
   8 #include "base/command_line.h"
   9 #include "base/logging.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "base/strings/string_piece.h"
  12 #include "base/strings/string_split.h"
  13 #include "base/strings/string_util.h"
  14 #include "ui/gl/gl_bindings.h"
  15 #include "ui/gl/gl_context.h"
  16 #include "ui/gl/gl_surface.h"
  17
  18 namespace {
  19
  20 std::string GetDriverVersionFromString(const std::string& version_string) {
  21   // Extract driver version from the second number in a string like:
  22   // "OpenGL ES 2.0 V@6.0 AU@ (CL@2946718)"
  23
  24   // Exclude first "2.0".
  25   size_t begin = version_string.find_first_of("0123456789");
  26   if (begin == std::string::npos)
  27     return "0";
  28   size_t end = version_string.find_first_not_of("01234567890.", begin);
  29
  30   // Extract number of the form "%d.%d"
  31   begin = version_string.find_first_of("0123456789", end);
  32   if (begin == std::string::npos)
  33     return "0";
  34   end = version_string.find_first_not_of("01234567890.", begin);
  35   std::string sub_string;
  36   if (end != std::string::npos)
  37     sub_string = version_string.substr(begin, end - begin);
  38   else
  39     sub_string = version_string.substr(begin);
  40   std::vector<std::string> pieces;
  41   base::SplitString(sub_string, '.', &pieces);
  42   if (pieces.size() < 2)
  43     return "0";
  44   return pieces[0] + "." + pieces[1];
  45 }
  46
  47 class ScopedRestoreNonOwnedEGLContext {
  48  public:
  49   ScopedRestoreNonOwnedEGLContext();
  50   ~ScopedRestoreNonOwnedEGLContext();
  51
  52  private:
  53   EGLContext context_;
  54   EGLDisplay display_;
  55   EGLSurface draw_surface_;
  56   EGLSurface read_surface_;
  57 };
  58
  59 ScopedRestoreNonOwnedEGLContext::ScopedRestoreNonOwnedEGLContext()
  60   : context_(EGL_NO_CONTEXT),
  61     display_(EGL_NO_DISPLAY),
  62     draw_surface_(EGL_NO_SURFACE),
  63     read_surface_(EGL_NO_SURFACE) {
  64   // This should only used to restore a context that is not created or owned by
  65   // Chromium native code, but created by Android system itself.
  66   DCHECK(!gfx::GLContext::GetCurrent());
  67
  68   context_ = eglGetCurrentContext();
  69   display_ = eglGetCurrentDisplay();
  70   draw_surface_ = eglGetCurrentSurface(EGL_DRAW);
  71   read_surface_ = eglGetCurrentSurface(EGL_READ);
  72 }
  73
  74 ScopedRestoreNonOwnedEGLContext::~ScopedRestoreNonOwnedEGLContext() {
  75   if (context_ == EGL_NO_CONTEXT || display_ == EGL_NO_DISPLAY ||
  76       draw_surface_ == EGL_NO_SURFACE || read_surface_ == EGL_NO_SURFACE)
  77     return;
  78
  79   if (!eglMakeCurrent(display_, draw_surface_, read_surface_, context_))
  80     LOG(WARNING) << "Failed to restore EGL context";
  81 }
  82
  83 }
  84
  85 namespace gpu {
  86
  87 CollectInfoResult CollectContextGraphicsInfo(GPUInfo* gpu_info) {
  88   return CollectBasicGraphicsInfo(gpu_info);
  89 }
  90
  91 GpuIDResult CollectGpuID(uint32* vendor_id, uint32* device_id) {
  92   DCHECK(vendor_id && device_id);
  93   *vendor_id = 0;
  94   *device_id = 0;
  95   return kGpuIDNotSupported;
  96 }
  97
  98 CollectInfoResult CollectBasicGraphicsInfo(GPUInfo* gpu_info) {
  99   gpu_info->can_lose_context = false;
 100   gpu_info->finalized = true;
 101
 102   gpu_info->machine_model_name =
 103       base::android::BuildInfo::GetInstance()->model();
 104
 105   // Create a short-lived context on the UI thread to collect the GL strings.
 106   // Make sure we restore the existing context if there is one.
 107   ScopedRestoreNonOwnedEGLContext restore_context;
 108   return CollectGraphicsInfoGL(gpu_info);
 109 }
 110
 111 CollectInfoResult CollectDriverInfoGL(GPUInfo* gpu_info) {
 112   gpu_info->driver_version = GetDriverVersionFromString(
 113       gpu_info->gl_version);
 114   gpu_info->gpu.vendor_string = gpu_info->gl_vendor;
 115   gpu_info->gpu.device_string = gpu_info->gl_renderer;
 116   return kCollectInfoSuccess;
 117 }
 118
 119 void MergeGPUInfo(GPUInfo* basic_gpu_info,
 120                   const GPUInfo& context_gpu_info) {
 121   MergeGPUInfoGL(basic_gpu_info, context_gpu_info);
 122 }
 123
 124 }  // namespace gpu