ui/gl/gl_version_info.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/gl/gl_version_info.h"
   6
   7 #include "base/strings/string_util.h"
   8
   9 namespace gfx {
  10
  11 GLVersionInfo::GLVersionInfo(const char* version_str)
  12     : is_es(false),
  13       is_es1(false),
  14       is_es2(false),
  15       is_es3(false),
  16       is_gl1(false),
  17       is_gl2(false),
  18       is_gl3(false),
  19       is_gl4(false) {
  20   if (version_str) {
  21     std::string lstr(StringToLowerASCII(std::string(version_str)));
  22     is_es = (lstr.substr(0, 9) == "opengl es");
  23     if (is_es) {
  24       is_es1 = (lstr.substr(9, 2) == "-c" && lstr.substr(13, 2) == "1.");
  25       is_es2 = (lstr.substr(9, 3) == " 2.");
  26       is_es3 = (lstr.substr(9, 3) == " 3.");
  27     } else {
  28       is_gl2 = (lstr.substr(0, 2) == "2.");
  29       is_gl3 = (lstr.substr(0, 2) == "3.");
  30       is_gl4 = (lstr.substr(0, 2) == "4.");
  31       // In early GL versions, GetString output format is implementation
  32       // dependent.
  33       is_gl1 = !is_gl2 && !is_gl3 && !is_gl4;
  34     }
  35   }
  36 }
  37
  38 }  // namespace gfx