ui/ozone/common/egl_util.cc

   1 // Copyright 2014 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 "ui/ozone/common/egl_util.h"
   6
   7 #include "base/files/file_path.h"
   8
   9 namespace ui {
  10 namespace {
  11
  12 const char kDefaultEglSoname[] = "libEGL.so.1";
  13 const char kDefaultGlesSoname[] = "libGLESv2.so.2";
  14
  15 }  // namespace
  16
  17 bool LoadDefaultEGLGLES2Bindings(
  18     SurfaceFactoryOzone::AddGLLibraryCallback add_gl_library,
  19     SurfaceFactoryOzone::SetGLGetProcAddressProcCallback
  20         set_gl_get_proc_address) {
  21   return LoadEGLGLES2Bindings(add_gl_library, set_gl_get_proc_address,
  22                               kDefaultEglSoname, kDefaultGlesSoname);
  23 }
  24
  25 bool LoadEGLGLES2Bindings(
  26     SurfaceFactoryOzone::AddGLLibraryCallback add_gl_library,
  27     SurfaceFactoryOzone::SetGLGetProcAddressProcCallback
  28         set_gl_get_proc_address,
  29     const char* egl_library_name,
  30     const char* gles_library_name) {
  31   base::NativeLibraryLoadError error;
  32   base::NativeLibrary gles_library =
  33       base::LoadNativeLibrary(base::FilePath(gles_library_name), &error);
  34   if (!gles_library) {
  35     LOG(WARNING) << "Failed to load GLES library: " << error.ToString();
  36     return false;
  37   }
  38
  39   base::NativeLibrary egl_library =
  40       base::LoadNativeLibrary(base::FilePath(egl_library_name), &error);
  41   if (!egl_library) {
  42     LOG(WARNING) << "Failed to load EGL library: " << error.ToString();
  43     base::UnloadNativeLibrary(gles_library);
  44     return false;
  45   }
  46
  47   SurfaceFactoryOzone::GLGetProcAddressProc get_proc_address =
  48       reinterpret_cast<SurfaceFactoryOzone::GLGetProcAddressProc>(
  49           base::GetFunctionPointerFromNativeLibrary(egl_library,
  50                                                     "eglGetProcAddress"));
  51   if (!get_proc_address) {
  52     LOG(ERROR) << "eglGetProcAddress not found.";
  53     base::UnloadNativeLibrary(egl_library);
  54     base::UnloadNativeLibrary(gles_library);
  55     return false;
  56   }
  57
  58   set_gl_get_proc_address.Run(get_proc_address);
  59   add_gl_library.Run(egl_library);
  60   add_gl_library.Run(gles_library);
  61
  62   return true;
  63 }
  64
  65 }  // namespace ui