kc3-lang/angle/src/libEGL/main.cpp

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• Author : Geoff Lang
  Date : 2014-11-19 14:20:15
  Hash : 2b5420c0
  Message : Merge libGLESv2 and libEGL classes into libANGLE. BUG=angle:733 Change-Id: Ic491c971411fe82c56cd97c5c8325ac14ec218df Reviewed-on: https://chromium-review.googlesource.com/230830 Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>

• src/libEGL/main.cpp

• //
  // Copyright (c) 2002-2012 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.
  //
  
  // main.cpp: DLL entry point and management of thread-local data.
  
  #include "libEGL/main.h"
  
  #include "common/debug.h"
  #include "common/tls.h"
  
  static TLSIndex currentTLS = TLS_OUT_OF_INDEXES;
  
  namespace egl
  {
  
  struct Current
  {
      EGLint error;
      EGLenum API;
      EGLDisplay display;
      EGLSurface drawSurface;
      EGLSurface readSurface;
  };
  
  Current *AllocateCurrent()
  {
      ASSERT(currentTLS != TLS_OUT_OF_INDEXES);
      if (currentTLS == TLS_OUT_OF_INDEXES)
      {
          return NULL;
      }
  
      Current *current = new Current();
      current->error = EGL_SUCCESS;
      current->API = EGL_OPENGL_ES_API;
      current->display = EGL_NO_DISPLAY;
      current->drawSurface = EGL_NO_SURFACE;
      current->readSurface = EGL_NO_SURFACE;
  
      if (!SetTLSValue(currentTLS, current))
      {
          ERR("Could not set thread local storage.");
          return NULL;
      }
  
      return current;
  }
  
  void DeallocateCurrent()
  {
      Current *current = reinterpret_cast<Current*>(GetTLSValue(currentTLS));
      SafeDelete(current);
      SetTLSValue(currentTLS, NULL);
  }
  
  }
  
  extern "C" BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
  {
      switch (reason)
      {
        case DLL_PROCESS_ATTACH:
          {
  #if defined(ANGLE_ENABLE_DEBUG_TRACE)
              FILE *debug = fopen(TRACE_OUTPUT_FILE, "rt");
  
              if (debug)
              {
                  fclose(debug);
                  debug = fopen(TRACE_OUTPUT_FILE, "wt");   // Erase
                  
                  if (debug)
                  {
                      fclose(debug);
                  }
              }
  #endif
  
              currentTLS = CreateTLSIndex();
              if (currentTLS == TLS_OUT_OF_INDEXES)
              {
                  return FALSE;
              }
  
  #ifdef ANGLE_ENABLE_DEBUG_ANNOTATIONS
              gl::InitializeDebugAnnotations();
  #endif
          }
          // Fall through to initialize index
        case DLL_THREAD_ATTACH:
          {
              egl::AllocateCurrent();
          }
          break;
        case DLL_THREAD_DETACH:
          {
              egl::DeallocateCurrent();
          }
          break;
        case DLL_PROCESS_DETACH:
          {
              egl::DeallocateCurrent();
              DestroyTLSIndex(currentTLS);
  
  #ifdef ANGLE_ENABLE_DEBUG_ANNOTATIONS
              gl::UninitializeDebugAnnotations();
  #endif
          }
          break;
        default:
          break;
      }
  
      return TRUE;
  }
  
  namespace egl
  {
  
  Current *GetCurrentData()
  {
      Current *current = reinterpret_cast<Current*>(GetTLSValue(currentTLS));
  
      // ANGLE issue 488: when the dll is loaded after thread initialization,
      // thread local storage (current) might not exist yet.
      return (current ? current : AllocateCurrent());
  }
  
  void recordError(const Error &error)
  {
      Current *current = GetCurrentData();
  
      current->error = error.getCode();
  }
  
  EGLint getCurrentError()
  {
      Current *current = GetCurrentData();
  
      return current->error;
  }
  
  void setCurrentAPI(EGLenum API)
  {
      Current *current = GetCurrentData();
  
      current->API = API;
  }
  
  EGLenum getCurrentAPI()
  {
      Current *current = GetCurrentData();
  
      return current->API;
  }
  
  void setCurrentDisplay(EGLDisplay dpy)
  {
      Current *current = GetCurrentData();
  
      current->display = dpy;
  }
  
  EGLDisplay getCurrentDisplay()
  {
      Current *current = GetCurrentData();
  
      return current->display;
  }
  
  void setCurrentDrawSurface(EGLSurface surface)
  {
      Current *current = GetCurrentData();
  
      current->drawSurface = surface;
  }
  
  EGLSurface getCurrentDrawSurface()
  {
      Current *current = GetCurrentData();
  
      return current->drawSurface;
  }
  
  void setCurrentReadSurface(EGLSurface surface)
  {
      Current *current = GetCurrentData();
  
      current->readSurface = surface;
  }
  
  EGLSurface getCurrentReadSurface()
  {
      Current *current = GetCurrentData();
  
      return current->readSurface;
  }
  
  }