kc3-lang/angle/src/libANGLE/renderer/gl/egl/SurfaceEGL.cpp

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• Hash : 043fcf18
  Author :
  Date : 2021-01-07T13:23:57
  

  Support create ANGLE EGLContext from an external EGLContext
  
  For Android WebView, Android creates an EGLContext, EGLSurface
  and FBO, and makeCurrent on them, and then calls WebView draw
  function to draw the WebView content on the current EGLSurface or
  binded FBO. So to use ANGLE in WebView, this CL adds a way to
  create ANGLE EGLContext from an external EGLContext, and save
  and restore GL state in eglMakeCurrent().
  
  Bug: angleproject:5509
  Change-Id: I874986813117f125e23e975ea1adc51ac5b3a631
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2615239
  Commit-Queue: Peng Huang <penghuang@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  

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• src/libANGLE/renderer/gl/egl/SurfaceEGL.cpp

• //
  // 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.
  //
  
  // SurfaceEGL.cpp: EGL implementation of egl::Surface
  
  #include "libANGLE/renderer/gl/egl/SurfaceEGL.h"
  
  #include "common/debug.h"
  
  namespace rx
  {
  
  SurfaceEGL::SurfaceEGL(const egl::SurfaceState &state, const FunctionsEGL *egl, EGLConfig config)
      : SurfaceGL(state),
        mEGL(egl),
        mConfig(config),
        mSurface(EGL_NO_SURFACE),
        mHasSwapBuffersWithDamage(mEGL->hasExtension("EGL_KHR_swap_buffers_with_damage"))
  {}
  
  SurfaceEGL::~SurfaceEGL()
  {
      if (mSurface != EGL_NO_SURFACE)
      {
          EGLBoolean success = mEGL->destroySurface(mSurface);
          ASSERT(success == EGL_TRUE);
      }
  }
  
  egl::Error SurfaceEGL::makeCurrent(const gl::Context *context)
  {
      // Handling of makeCurrent is done in DisplayEGL
      return egl::NoError();
  }
  
  egl::Error SurfaceEGL::swap(const gl::Context *context)
  {
      EGLBoolean success = mEGL->swapBuffers(mSurface);
      if (success == EGL_FALSE)
      {
          return egl::Error(mEGL->getError(), "eglSwapBuffers failed");
      }
      return egl::NoError();
  }
  
  egl::Error SurfaceEGL::swapWithDamage(const gl::Context *context,
                                        const EGLint *rects,
                                        EGLint n_rects)
  {
      EGLBoolean success;
      if (mHasSwapBuffersWithDamage)
      {
          success = mEGL->swapBuffersWithDamageKHR(mSurface, rects, n_rects);
      }
      else
      {
          success = mEGL->swapBuffers(mSurface);
      }
      if (success == EGL_FALSE)
      {
          return egl::Error(mEGL->getError(), "eglSwapBuffersWithDamageKHR failed");
      }
      return egl::NoError();
  }
  
  egl::Error SurfaceEGL::postSubBuffer(const gl::Context *context,
                                       EGLint x,
                                       EGLint y,
                                       EGLint width,
                                       EGLint height)
  {
      UNIMPLEMENTED();
      return egl::EglBadSurface();
  }
  
  egl::Error SurfaceEGL::setPresentationTime(EGLnsecsANDROID time)
  {
      EGLBoolean success = mEGL->presentationTimeANDROID(mSurface, time);
      if (success == EGL_FALSE)
      {
          return egl::Error(mEGL->getError(), "eglPresentationTimeANDROID failed");
      }
      return egl::NoError();
  }
  
  egl::Error SurfaceEGL::querySurfacePointerANGLE(EGLint attribute, void **value)
  {
      UNIMPLEMENTED();
      return egl::EglBadSurface();
  }
  
  egl::Error SurfaceEGL::bindTexImage(const gl::Context *context, gl::Texture *texture, EGLint buffer)
  {
      EGLBoolean success = mEGL->bindTexImage(mSurface, buffer);
      if (success == EGL_FALSE)
      {
          return egl::Error(mEGL->getError(), "eglBindTexImage failed");
      }
      return egl::NoError();
  }
  
  egl::Error SurfaceEGL::releaseTexImage(const gl::Context *context, EGLint buffer)
  {
      EGLBoolean success = mEGL->releaseTexImage(mSurface, buffer);
      if (success == EGL_FALSE)
      {
          return egl::Error(mEGL->getError(), "eglReleaseTexImage failed");
      }
      return egl::NoError();
  }
  
  void SurfaceEGL::setSwapInterval(EGLint interval)
  {
      EGLBoolean success = mEGL->swapInterval(interval);
      if (success == EGL_FALSE)
      {
          ERR() << "eglSwapInterval error " << egl::Error(mEGL->getError());
          ASSERT(false);
      }
  }
  
  EGLint SurfaceEGL::getWidth() const
  {
      EGLint value;
      EGLBoolean success = mEGL->querySurface(mSurface, EGL_WIDTH, &value);
      ASSERT(success == EGL_TRUE);
      return value;
  }
  
  EGLint SurfaceEGL::getHeight() const
  {
      EGLint value;
      EGLBoolean success = mEGL->querySurface(mSurface, EGL_HEIGHT, &value);
      ASSERT(success == EGL_TRUE);
      return value;
  }
  
  EGLint SurfaceEGL::isPostSubBufferSupported() const
  {
      UNIMPLEMENTED();
      return 0;
  }
  
  EGLint SurfaceEGL::getSwapBehavior() const
  {
      EGLint value;
      EGLBoolean success = mEGL->querySurface(mSurface, EGL_SWAP_BEHAVIOR, &value);
      ASSERT(success == EGL_TRUE);
      return value;
  }
  
  EGLSurface SurfaceEGL::getSurface() const
  {
      return mSurface;
  }
  
  void SurfaceEGL::setTimestampsEnabled(bool enabled)
  {
      ASSERT(mEGL->hasExtension("EGL_ANDROID_get_frame_timestamps"));
  
      EGLBoolean success =
          mEGL->surfaceAttrib(mSurface, EGL_TIMESTAMPS_ANDROID, enabled ? EGL_TRUE : EGL_FALSE);
      if (success == EGL_FALSE)
      {
          ERR() << "eglSurfaceAttribute failed: " << egl::Error(mEGL->getError());
      }
  }
  
  egl::SupportedCompositorTimings SurfaceEGL::getSupportedCompositorTimings() const
  {
      ASSERT(mEGL->hasExtension("EGL_ANDROID_get_frame_timestamps"));
  
      egl::SupportedCompositorTimings result;
      for (egl::CompositorTiming name : angle::AllEnums<egl::CompositorTiming>())
      {
          result[name] = mEGL->getCompositorTimingSupportedANDROID(mSurface, egl::ToEGLenum(name));
      }
      return result;
  }
  
  egl::Error SurfaceEGL::getCompositorTiming(EGLint numTimestamps,
                                             const EGLint *names,
                                             EGLnsecsANDROID *values) const
  {
      ASSERT(mEGL->hasExtension("EGL_ANDROID_get_frame_timestamps"));
  
      EGLBoolean success = mEGL->getCompositorTimingANDROID(mSurface, numTimestamps, names, values);
      if (success == EGL_FALSE)
      {
          return egl::Error(mEGL->getError(), "eglGetCompositorTimingANDROID failed");
      }
      return egl::NoError();
  }
  
  egl::Error SurfaceEGL::getNextFrameId(EGLuint64KHR *frameId) const
  {
      ASSERT(mEGL->hasExtension("EGL_ANDROID_get_frame_timestamps"));
  
      EGLBoolean success = mEGL->getNextFrameIdANDROID(mSurface, frameId);
      if (success == EGL_FALSE)
      {
          return egl::Error(mEGL->getError(), "eglGetNextFrameId failed");
      }
      return egl::NoError();
  }
  
  egl::SupportedTimestamps SurfaceEGL::getSupportedTimestamps() const
  {
      ASSERT(mEGL->hasExtension("EGL_ANDROID_get_frame_timestamps"));
  
      egl::SupportedTimestamps result;
      for (egl::Timestamp timestamp : angle::AllEnums<egl::Timestamp>())
      {
          result[timestamp] =
              mEGL->getFrameTimestampSupportedANDROID(mSurface, egl::ToEGLenum(timestamp));
      }
      return result;
  }
  
  egl::Error SurfaceEGL::getFrameTimestamps(EGLuint64KHR frameId,
                                            EGLint numTimestamps,
                                            const EGLint *timestamps,
                                            EGLnsecsANDROID *values) const
  {
      ASSERT(mEGL->hasExtension("EGL_ANDROID_get_frame_timestamps"));
  
      // The driver may return EGL_BAD_ACCESS at any time if the requested frame is no longer stored.
      EGLBoolean success =
          mEGL->getFrameTimestampsANDROID(mSurface, frameId, numTimestamps, timestamps, values);
      if (success == EGL_FALSE)
      {
          return egl::Error(mEGL->getError(), "eglGetFrameTimestampsANDROID failed");
      }
      return egl::NoError();
  }
  
  bool SurfaceEGL::isExternal() const
  {
      return false;
  }
  
  }  // namespace rx
  

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