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

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• Hash : 22fc9523
  Author :
  Date : 2021-02-03T15:32:48
  

  EGL: implement EGL_EXT_buffer_age
  
  Add extension flag.
  Add Validation check to surface query.
  Enable extension for vulkan.
  Modify AcquireNextImage to ++frame count and tag images
  with frame number.
  Buffer age is the difference between current frame count
  and the tagged frame number on the buffer.
  getBuffeAge may need to trigger AcquireNextImage to be current.
  Pass through egl extension and query.
  Add EGLBufferAgeTest
  
  Test: angle_end2end_test --gtest_filter=EGLBufferAgeTest
  Test: angle_deqp_egl_tests
  --deqp-case=dEQP-EGL.functional.buffer_age.*
  
  Bug: angleproject:3529
  Change-Id: I0cb94be1c3e85d6f33e82a6a1ccdc9731b6a7f23
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2684724
  Commit-Queue: Mohan Maiya <m.maiya@samsung.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/gl/egl/WindowSurfaceEGL.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.
  //
  
  // WindowSurfaceEGL.h: EGL implementation of egl::Surface for windows
  
  #include "libANGLE/renderer/gl/egl/WindowSurfaceEGL.h"
  
  #include "libANGLE/Surface.h"
  #include "libANGLE/renderer/gl/egl/egl_utils.h"
  
  namespace rx
  {
  
  WindowSurfaceEGL::WindowSurfaceEGL(const egl::SurfaceState &state,
                                     const FunctionsEGL *egl,
                                     EGLConfig config,
                                     EGLNativeWindowType window)
      : SurfaceEGL(state, egl, config), mWindow(window)
  {}
  
  WindowSurfaceEGL::~WindowSurfaceEGL() {}
  
  egl::Error WindowSurfaceEGL::initialize(const egl::Display *display)
  {
      constexpr EGLint kForwardedWindowSurfaceAttributes[] = {
          EGL_RENDER_BUFFER, EGL_POST_SUB_BUFFER_SUPPORTED_NV, EGL_GL_COLORSPACE,
          EGL_COLOR_COMPONENT_TYPE_EXT};
  
      native_egl::AttributeVector nativeAttribs =
          native_egl::TrimAttributeMap(mState.attributes, kForwardedWindowSurfaceAttributes);
      native_egl::FinalizeAttributeVector(&nativeAttribs);
  
      mSurface = mEGL->createWindowSurface(mConfig, mWindow, nativeAttribs.data());
      if (mSurface == EGL_NO_SURFACE)
      {
          return egl::Error(mEGL->getError(), "eglCreateWindowSurface failed");
      }
  
      return egl::NoError();
  }
  
  egl::Error WindowSurfaceEGL::getBufferAge(const gl::Context *context, EGLint *age)
  {
      ANGLE_UNUSED_VARIABLE(context);
      EGLBoolean result = mEGL->querySurface(mSurface, EGL_BUFFER_AGE_EXT, age);
      if (result == EGL_FALSE)
      {
          return egl::Error(mEGL->getError(), "eglQuerySurface for EGL_BUFFER_AGE_EXT failed");
      }
      return egl::NoError();
  }
  
  }  // namespace rx
  

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