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

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• Hash : 384a29a8
  Author :
  Date : 2023-07-27T10:51:07
  

  Reland: GL: Remove EGL_EXTERNAL_CONTEXT_SAVE_STATE_ANGLE
  
  Now that Chromium no longer uses it.
  
  This is a reland of:
  
  https://chromium-review.googlesource.com/c/angle/angle/+/4724768
  
  Bug: angleproject:5509
  Change-Id: I650e598580539fbe404f2ec4b56b20b56b948f6c
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4903079
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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

• //
  // Copyright 2018 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.
  //
  
  #include "libANGLE/renderer/gl/egl/ContextEGL.h"
  
  #include "libANGLE/renderer/gl/FramebufferGL.h"
  #include "libANGLE/renderer/gl/StateManagerGL.h"
  
  namespace rx
  {
  
  ContextEGL::ContextEGL(const gl::State &state,
                         gl::ErrorSet *errorSet,
                         const std::shared_ptr<RendererEGL> &renderer,
                         RobustnessVideoMemoryPurgeStatus robustnessVideoMemoryPurgeStatus)
      : ContextGL(state, errorSet, renderer, robustnessVideoMemoryPurgeStatus), mRendererEGL(renderer)
  {}
  
  ContextEGL::~ContextEGL() {}
  
  void ContextEGL::acquireExternalContext(const gl::Context *context)
  {
      ASSERT(context->isExternal());
  
      if (!mExtState)
      {
          mExtState        = std::make_unique<ExternalContextState>();
          const auto &caps = getCaps();
          mExtState->textureBindings.resize(static_cast<size_t>(caps.maxCombinedTextureImageUnits));
      }
  
      getStateManager()->syncFromNativeContext(getNativeExtensions(), mExtState.get());
  
      // Use current FBO as the default framebuffer when the external context is current.
      // First save the current ID of the default framebuffer to restore in
      // onUnMakeCurrent().
      gl::Framebuffer *framebuffer = mState.getDefaultFramebuffer();
      auto framebufferGL           = GetImplAs<FramebufferGL>(framebuffer);
      mPrevDefaultFramebufferID    = framebufferGL->getFramebufferID();
      framebufferGL->updateDefaultFramebufferID(mExtState->framebufferBinding);
  }
  
  void ContextEGL::releaseExternalContext(const gl::Context *context)
  {
      ASSERT(context->isExternal());
      ASSERT(mExtState);
  
      getStateManager()->restoreNativeContext(getNativeExtensions(), mExtState.get());
  
      // If the default framebuffer exists, update its ID (note that there can
      // be multiple consecutive onUnMakeCurrent() calls in destruction, and
      // the default FBO will have been unset by the first one).
      gl::Framebuffer *framebuffer = mState.getDefaultFramebuffer();
      if (framebuffer)
      {
          auto framebufferGL = GetImplAs<FramebufferGL>(framebuffer);
          framebufferGL->updateDefaultFramebufferID(mPrevDefaultFramebufferID);
      }
  }
  
  EGLContext ContextEGL::getContext() const
  {
      return mRendererEGL->getContext();
  }
  
  }  // namespace rx
  

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