kc3-lang/angle/src/libANGLE/renderer/gl/cgl/ContextCGL.cpp

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• Hash : d33a2222
  Author :
  Date : 2021-04-26T16:56:15
  

  Upstream Apple's direct-to-Metal backend: compile libANGLE.
  
  This change is meant to merge the metal backend changes from Apple's
  direct-to-Metal backend. Taken from Kyle Piddington's CL:
  https://chromium-review.googlesource.com/c/angle/angle/+/2857366/
  The goal of this CL is to merge the metal backend code in a state
  that compiles, but not to switch the Metal backend over to using
  the direct-to-metal backend yet.
  
  Bug: angleproject:5505
  Bug: angleproject:6127
  Change-Id: If6783e06e0086b3a1dd25c6f53caca5cfc96cb86
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2950067
  Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  Reviewed-by: Kenneth Russell <kbr@chromium.org>
  Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>
  

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• src/libANGLE/renderer/gl/cgl/ContextCGL.cpp

• //
  // Copyright 2019 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.
  //
  // ContextCGL:
  //   Mac-specific subclass of ContextGL.
  //
  
  #include "libANGLE/renderer/gl/cgl/ContextCGL.h"
  
  #include "libANGLE/Context.h"
  #include "libANGLE/Display.h"
  #include "libANGLE/renderer/gl/cgl/DisplayCGL.h"
  
  #if defined(ANGLE_PLATFORM_MACOS) || defined(ANGLE_PLATFORM_MACCATALYST)
  
  namespace rx
  {
  
  ContextCGL::ContextCGL(DisplayCGL *display,
                         const gl::State &state,
                         gl::ErrorSet *errorSet,
                         const std::shared_ptr<RendererGL> &renderer,
                         bool usesDiscreteGPU)
      : ContextGL(state, errorSet, renderer, RobustnessVideoMemoryPurgeStatus::NOT_REQUESTED),
        mUsesDiscreteGpu(usesDiscreteGPU),
        mReleasedDiscreteGpu(false)
  {
      if (mUsesDiscreteGpu)
      {
          (void)display->referenceDiscreteGPU();
      }
  }
  
  egl::Error ContextCGL::releaseHighPowerGPU(gl::Context *context)
  {
      if (mUsesDiscreteGpu && !mReleasedDiscreteGpu)
      {
          mReleasedDiscreteGpu = true;
          return GetImplAs<DisplayCGL>(context->getDisplay())->unreferenceDiscreteGPU();
      }
  
      return egl::NoError();
  }
  
  egl::Error ContextCGL::reacquireHighPowerGPU(gl::Context *context)
  {
      if (mUsesDiscreteGpu && mReleasedDiscreteGpu)
      {
          mReleasedDiscreteGpu = false;
          return GetImplAs<DisplayCGL>(context->getDisplay())->referenceDiscreteGPU();
      }
  
      return egl::NoError();
  }
  
  void ContextCGL::onDestroy(const gl::Context *context)
  {
      if (mUsesDiscreteGpu && !mReleasedDiscreteGpu)
      {
          (void)GetImplAs<DisplayCGL>(context->getDisplay())->unreferenceDiscreteGPU();
      }
      ContextGL::onDestroy(context);
  }
  
  }  // namespace rx
  
  #endif  // defined(ANGLE_PLATFORM_MACOS) || defined(ANGLE_PLATFORM_MACCATALYST)
  

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