kc3-lang/angle/src/libANGLE/renderer/gl/egl/FunctionsEGL.h

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• Hash : fc6b747d
  Author :
  Date : 2022-01-10T17:01:30
  

  EGL: Fallback to native device if no display available
  
  On some Google-internal platforms, eglGetDisplay() fails. The
  EXT_device_enumeration extension is the recommended way to initialize
  an EGL display on these platforms.
  
  Bug: chromium:1276086
  Change-Id: I68969c19d643a46e8362ae265b1115b18ca3bbc1
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3378824
  Reviewed-by: Kenneth Russell <kbr@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/gl/egl/FunctionsEGL.h

• //
  // Copyright 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.
  //
  
  // FunctionsEGL.h: Defines the FunctionsEGL class to load functions and data from EGL
  
  #ifndef LIBANGLE_RENDERER_GL_CROS_FUNCTIONSEGL_H_
  #define LIBANGLE_RENDERER_GL_CROS_FUNCTIONSEGL_H_
  
  #include <EGL/egl.h>
  #include <EGL/eglext.h>
  
  #include <string>
  #include <vector>
  
  #include "libANGLE/Error.h"
  
  namespace rx
  {
  
  class FunctionsGL;
  
  class FunctionsEGL
  {
    public:
      FunctionsEGL();
      virtual ~FunctionsEGL();
  
      int majorVersion;
      int minorVersion;
  
      egl::Error initialize(EGLNativeDisplayType nativeDisplay);
      egl::Error terminate();
  
      virtual void *getProcAddress(const char *name) const = 0;
  
      FunctionsGL *makeFunctionsGL() const;
      bool hasExtension(const char *extension) const;
      EGLDisplay getDisplay() const;
      EGLint getError() const;
  
      EGLBoolean chooseConfig(EGLint const *attrib_list,
                              EGLConfig *configs,
                              EGLint config_size,
                              EGLint *num_config) const;
      EGLBoolean getConfigs(EGLConfig *configs, EGLint config_size, EGLint *num_config) const;
      EGLBoolean getConfigAttrib(EGLConfig config, EGLint attribute, EGLint *value) const;
      EGLSurface getCurrentSurface(EGLint readdraw) const;
      EGLContext createContext(EGLConfig config,
                               EGLContext share_context,
                               EGLint const *attrib_list) const;
      EGLSurface createPbufferSurface(EGLConfig config, const EGLint *attrib_list) const;
      EGLSurface createWindowSurface(EGLConfig config,
                                     EGLNativeWindowType win,
                                     const EGLint *attrib_list) const;
      EGLBoolean destroyContext(EGLContext context) const;
      EGLBoolean destroySurface(EGLSurface surface) const;
      EGLBoolean makeCurrent(EGLSurface surface, EGLContext context) const;
      const char *queryString(EGLint name) const;
      EGLBoolean querySurface(EGLSurface surface, EGLint attribute, EGLint *value) const;
      EGLBoolean swapBuffers(EGLSurface surface) const;
  
      EGLBoolean bindTexImage(EGLSurface surface, EGLint buffer) const;
      EGLBoolean releaseTexImage(EGLSurface surface, EGLint buffer) const;
      EGLBoolean surfaceAttrib(EGLSurface surface, EGLint attribute, EGLint value) const;
      EGLBoolean swapInterval(EGLint interval) const;
  
      EGLContext getCurrentContext() const;
  
      EGLImageKHR createImageKHR(EGLContext context,
                                 EGLenum target,
                                 EGLClientBuffer buffer,
                                 const EGLint *attrib_list) const;
      EGLBoolean destroyImageKHR(EGLImageKHR image) const;
  
      EGLSyncKHR createSyncKHR(EGLenum type, const EGLint *attrib_list) const;
      EGLBoolean destroySyncKHR(EGLSyncKHR sync) const;
      EGLint clientWaitSyncKHR(EGLSyncKHR sync, EGLint flags, EGLTimeKHR timeout) const;
      EGLBoolean getSyncAttribKHR(EGLSyncKHR sync, EGLint attribute, EGLint *value) const;
  
      EGLint waitSyncKHR(EGLSyncKHR sync, EGLint flags) const;
  
      EGLBoolean swapBuffersWithDamageKHR(EGLSurface surface,
                                          const EGLint *rects,
                                          EGLint n_rects) const;
  
      EGLBoolean presentationTimeANDROID(EGLSurface surface, EGLnsecsANDROID time) const;
  
      void setBlobCacheFuncsANDROID(EGLSetBlobFuncANDROID set, EGLGetBlobFuncANDROID get) const;
  
      EGLBoolean getCompositorTimingSupportedANDROID(EGLSurface surface, EGLint name) const;
      EGLBoolean getCompositorTimingANDROID(EGLSurface surface,
                                            EGLint numTimestamps,
                                            const EGLint *names,
                                            EGLnsecsANDROID *values) const;
      EGLBoolean getNextFrameIdANDROID(EGLSurface surface, EGLuint64KHR *frameId) const;
      EGLBoolean getFrameTimestampSupportedANDROID(EGLSurface surface, EGLint timestamp) const;
      EGLBoolean getFrameTimestampsANDROID(EGLSurface surface,
                                           EGLuint64KHR frameId,
                                           EGLint numTimestamps,
                                           const EGLint *timestamps,
                                           EGLnsecsANDROID *values) const;
  
      EGLint dupNativeFenceFDANDROID(EGLSync sync) const;
  
    private:
      // So as to isolate from angle we do not include angleutils.h and cannot
      // use angle::NonCopyable so we replicated it here instead.
      FunctionsEGL(const FunctionsEGL &) = delete;
      void operator=(const FunctionsEGL &) = delete;
  
      // Fallback mechanism for creating a display from a native device object.
      EGLDisplay getNativeDisplay(int *major, int *minor);
  
      struct EGLDispatchTable;
      EGLDispatchTable *mFnPtrs;
      EGLDisplay mEGLDisplay;
      std::vector<std::string> mExtensions;
  };
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_GL_CROS_FUNCTIONSEGL_H_
  

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