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

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• Author : Corentin Wallez
  Date : 2016-01-15 15:53:12
  Hash : 436e32ae
  Message : GLX backend: check for child window resizes on eglWaitNative This is the standard way, if not often used, for application to notify the driver of window size changes. Chromium uses it to resize when it is done rendering and swapping so that drivers do not clobber the backbuffer. This fixes black flickering appearing when resizing the Chromium windows with --use-gl=angle. BUG=angleproject:1281 Change-Id: Ic76f3c3ef453eae07eb59122135290411f86764d Reviewed-on: https://chromium-review.googlesource.com/322390 Reviewed-by: Jamie Madill <jmadill@chromium.org> Tryjob-Request: Corentin Wallez <cwallez@chromium.org> Tested-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org>

• src/libANGLE/Display.h

• //
  // Copyright (c) 2002-2013 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.
  //
  
  // Display.h: Defines the egl::Display class, representing the abstract
  // display on which graphics are drawn. Implements EGLDisplay.
  // [EGL 1.4] section 2.1.2 page 3.
  
  #ifndef LIBANGLE_DISPLAY_H_
  #define LIBANGLE_DISPLAY_H_
  
  #include <set>
  #include <vector>
  
  #include "libANGLE/Error.h"
  #include "libANGLE/Caps.h"
  #include "libANGLE/Config.h"
  #include "libANGLE/AttributeMap.h"
  #include "libANGLE/renderer/Renderer.h"
  
  namespace gl
  {
  class Context;
  }
  
  namespace rx
  {
  class DisplayImpl;
  }
  
  namespace egl
  {
  class Device;
  class Image;
  class Surface;
  
  class Display final : angle::NonCopyable
  {
    public:
      ~Display();
  
      Error initialize();
      void terminate();
  
      static egl::Display *GetDisplayFromDevice(void *native_display);
      static egl::Display *GetDisplayFromAttribs(void *native_display, const AttributeMap &attribMap);
  
      static const ClientExtensions &getClientExtensions();
      static const std::string &getClientExtensionString();
  
      std::vector<const Config*> getConfigs(const egl::AttributeMap &attribs) const;
      bool getConfigAttrib(const Config *configuration, EGLint attribute, EGLint *value);
  
      Error createWindowSurface(const Config *configuration, EGLNativeWindowType window, const AttributeMap &attribs,
                                Surface **outSurface);
      Error createPbufferSurface(const Config *configuration, const AttributeMap &attribs, Surface **outSurface);
      Error createPbufferFromClientBuffer(const Config *configuration, EGLClientBuffer shareHandle, const AttributeMap &attribs,
                                          Surface **outSurface);
      Error createPixmapSurface(const Config *configuration, NativePixmapType nativePixmap, const AttributeMap &attribs,
                                Surface **outSurface);
  
      Error createImage(gl::Context *context,
                        EGLenum target,
                        EGLClientBuffer buffer,
                        const AttributeMap &attribs,
                        Image **outImage);
  
      Error createContext(const Config *configuration, gl::Context *shareContext, const AttributeMap &attribs,
                          gl::Context **outContext);
  
      Error makeCurrent(egl::Surface *drawSurface, egl::Surface *readSurface, gl::Context *context);
  
      void destroySurface(egl::Surface *surface);
      void destroyImage(egl::Image *image);
      void destroyContext(gl::Context *context);
  
      bool isInitialized() const;
      bool isValidConfig(const Config *config) const;
      bool isValidContext(gl::Context *context) const;
      bool isValidSurface(egl::Surface *surface) const;
      bool isValidImage(const Image *image) const;
      bool isValidNativeWindow(EGLNativeWindowType window) const;
  
      static bool isValidDisplay(const egl::Display *display);
      static bool isValidNativeDisplay(EGLNativeDisplayType display);
      static bool hasExistingWindowSurface(EGLNativeWindowType window);
  
      bool isDeviceLost() const;
      bool testDeviceLost();
      void notifyDeviceLost();
  
      Error waitClient() const;
      Error waitNative(EGLint engine, egl::Surface *drawSurface, egl::Surface *readSurface) const;
  
      const Caps &getCaps() const;
  
      const DisplayExtensions &getExtensions() const;
      const std::string &getExtensionString() const;
      const std::string &getVendorString() const;
  
      const AttributeMap &getAttributeMap() const { return mAttributeMap; }
      EGLNativeDisplayType getNativeDisplayId() const { return mDisplayId; }
  
      rx::DisplayImpl *getImplementation() { return mImplementation; }
      Device *getDevice() const;
      EGLenum getPlatform() const { return mPlatform; }
  
    private:
      Display(EGLenum platform, EGLNativeDisplayType displayId, Device *eglDevice);
  
      void setAttributes(rx::DisplayImpl *impl, const AttributeMap &attribMap);
  
      Error restoreLostDevice();
  
      void initDisplayExtensions();
      void initVendorString();
  
      rx::DisplayImpl *mImplementation;
  
      EGLNativeDisplayType mDisplayId;
      AttributeMap mAttributeMap;
  
      ConfigSet mConfigSet;
  
      typedef std::set<gl::Context*> ContextSet;
      ContextSet mContextSet;
  
      typedef std::set<Image *> ImageSet;
      ImageSet mImageSet;
  
      bool mInitialized;
  
      Caps mCaps;
  
      DisplayExtensions mDisplayExtensions;
      std::string mDisplayExtensionString;
  
      std::string mVendorString;
  
      Device *mDevice;
      EGLenum mPlatform;
  };
  
  }
  
  #endif   // LIBANGLE_DISPLAY_H_