kc3-lang/angle/src/libANGLE/Thread.h

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• Author : Jamie Madill
  Date : 2017-06-19 11:13:23
  Hash : 61e16b44
  Message : Context: Bind current display/surface. Looking at the EGL spec, it says for eglGetCurrentDisplay: "The display for the current context in the calling thread, for the current rendering API, is returned." This implies that MakeCurrent binds a display to a Context. There's also pretty clear language for the read/draw Surface as well, that they can only be bound to one Context/thread at a time. Hence we don't need to duplicate this storage in the egl::Thread structure, merely storing a pointer to the current Context, which has access to the read/draw Surface and current Display. BUG=angleproject:1156 Change-Id: Ia3b99d50b3591012c43e851834c1af02ff62a33f Reviewed-on: https://chromium-review.googlesource.com/538865 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• src/libANGLE/Thread.h

• //
  // Copyright(c) 2016 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.
  //
  
  // Thread.h : Defines the Thread class which represents a global EGL thread.
  
  #ifndef LIBANGLE_THREAD_H_
  #define LIBANGLE_THREAD_H_
  
  #include <EGL/egl.h>
  
  namespace gl
  {
  class Context;
  }  // namespace gl
  
  namespace egl
  {
  class Error;
  class Display;
  class Surface;
  
  class Thread
  {
    public:
      Thread();
  
      void setError(const Error &error);
      EGLint getError() const;
  
      void setAPI(EGLenum api);
      EGLenum getAPI() const;
  
      void setCurrent(gl::Context *context);
      Surface *getCurrentDrawSurface() const;
      Surface *getCurrentReadSurface() const;
      gl::Context *getContext() const;
      gl::Context *getValidContext() const;
      Display *getCurrentDisplay() const;
  
    private:
      EGLint mError;
      EGLenum mAPI;
      gl::Context *mContext;
  };
  
  }  // namespace egl
  
  #endif  // LIBANGLE_THREAD_H_