| // Copyright 2014 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 "ui/gl/gl_version_info.h" |
| |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/string_tokenizer.h" |
| #include "base/strings/string_util.h" |
| |
| namespace { |
| |
| bool DesktopCoreCommonCheck( |
| bool is_es, unsigned major_version, unsigned minor_version) { |
| return (!is_es && |
| ((major_version == 3 && minor_version >= 2) || |
| major_version > 3)); |
| } |
| |
| } |
| |
| |
| namespace gfx { |
| |
| GLVersionInfo::GLVersionInfo(const char* version_str, const char* renderer_str, |
| const char* extensions_str) |
| : GLVersionInfo(version_str, renderer_str) { |
| is_desktop_core_profile = |
| DesktopCoreCommonCheck(is_es, major_version, minor_version) && |
| !strstr(extensions_str, "GL_ARB_compatibility"); |
| } |
| |
| GLVersionInfo::GLVersionInfo(const char* version_str, const char* renderer_str, |
| const std::set<std::string>& extensions) |
| : GLVersionInfo(version_str, renderer_str) { |
| is_desktop_core_profile = |
| DesktopCoreCommonCheck(is_es, major_version, minor_version) && |
| extensions.find("GL_ARB_compatibility") == extensions.end(); |
| } |
| |
| GLVersionInfo::GLVersionInfo(const char* version_str, const char* renderer_str) |
| : is_es(false), |
| is_angle(false), |
| major_version(0), |
| minor_version(0), |
| is_es3(false), |
| is_desktop_core_profile(false) { |
| if (version_str) { |
| ParseVersionString(version_str, &major_version, &minor_version, |
| &is_es, &is_es3); |
| } |
| if (renderer_str) { |
| is_angle = StartsWithASCII(renderer_str, "ANGLE", true); |
| } |
| } |
| |
| void GLVersionInfo::ParseVersionString(const char* version_str, |
| unsigned* major_version, |
| unsigned* minor_version, |
| bool* is_es, |
| bool* is_es3) { |
| // Make sure the outputs are always initialized. |
| *major_version = 0; |
| *minor_version = 0; |
| *is_es = false; |
| *is_es3 = false; |
| if (!version_str) |
| return; |
| std::string lstr(base::StringToLowerASCII(std::string(version_str))); |
| *is_es = (lstr.length() > 12) && (lstr.substr(0, 9) == "opengl es"); |
| if (*is_es) |
| lstr = lstr.substr(10, 3); |
| base::StringTokenizer tokenizer(lstr.begin(), lstr.end(), "."); |
| unsigned major, minor; |
| if (tokenizer.GetNext() && |
| base::StringToUint(tokenizer.token_piece(), &major)) { |
| *major_version = major; |
| if (tokenizer.GetNext() && |
| base::StringToUint(tokenizer.token_piece(), &minor)) { |
| *minor_version = minor; |
| } |
| } |
| if (*is_es && *major_version == 3) |
| *is_es3 = true; |
| } |
| |
| } // namespace gfx |