kc3-lang/angle/src/libANGLE/Platform.cpp

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• Author : Jamie Madill
  Date : 2017-02-16 10:24:06
  Hash : abe89c7d
  Message : Tweak platform method signatures. This works around a limitation in UBSAN which can't handle decltype. Instead use void * and typedef where appropriate. BUG=chromium:692274 Change-Id: I4eab796db3aa2e51c0fc558170eb2af61f07223d Reviewed-on: https://chromium-review.googlesource.com/443885 Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• src/libANGLE/Platform.cpp

• //
  // Copyright 2015 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // Platform.cpp: Implementation methods for angle::Platform.
  
  #include <platform/Platform.h>
  
  #include <cstring>
  
  #include "common/debug.h"
  
  namespace
  {
  // TODO(jmadill): Make methods owned by egl::Display.
  angle::PlatformMethods g_platformMethods;
  }  // anonymous namespace
  
  angle::PlatformMethods *ANGLEPlatformCurrent()
  {
      return &g_platformMethods;
  }
  
  bool ANGLE_APIENTRY ANGLEGetDisplayPlatform(angle::EGLDisplayType display,
                                              const char *const methodNames[],
                                              unsigned int methodNameCount,
                                              void *context,
                                              void *platformMethods)
  {
      angle::PlatformMethods **platformMethodsOut =
          reinterpret_cast<angle::PlatformMethods **>(platformMethods);
  
      // We allow for a lower input count of impl platform methods if the subset is correct.
      if (methodNameCount > angle::g_NumPlatformMethods)
      {
          ERR() << "Invalid platform method count: " << methodNameCount << ", expected "
                << angle::g_NumPlatformMethods << ".";
          return false;
      }
  
      for (unsigned int nameIndex = 0; nameIndex < methodNameCount; ++nameIndex)
      {
          const char *expectedName = angle::g_PlatformMethodNames[nameIndex];
          const char *actualName   = methodNames[nameIndex];
          if (strcmp(expectedName, actualName) != 0)
          {
              ERR() << "Invalid platform method name: " << actualName << ", expected " << expectedName
                    << ".";
              return false;
          }
      }
  
      // TODO(jmadill): Store platform methods in display.
      g_platformMethods.context = context;
      *platformMethodsOut       = &g_platformMethods;
      return true;
  }
  
  void ANGLE_APIENTRY ANGLEResetDisplayPlatform(angle::EGLDisplayType display)
  {
      // TODO(jmadill): Store platform methods in display.
      g_platformMethods = angle::PlatformMethods();
  }