kc3-lang/angle/src/libANGLE/renderer/null/DisplayNULL.cpp

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• Hash : 29bb612e
  Author :
  Date : 2020-05-28T10:32:26
  

  Add egl::ShareGroup class to abstract the share context group
  
  Vulkan backend has a barrier tracker that tracks memory barrier needs of
  all shared resources. Because the buffer/texture objects are shared
  resources within a shared group, the tracker can not live in a context.
  Putting it in a device/renderer requires locks. It fits perfectly in a
  shareGroup object. The work is already done at API level to handle the
  mutex lock for shared context access so that no extra lock needs to be
  taken in the backend. This CL adds egl::ShareGroup class that represents
  the object that are shared among all share context group. At the front
  end this usually will include all the shared resource managers (not done
  in this CL). The ShareGroup object is accessible from gl::State object.
  This CL also adds ability for backend driver to allocate implementation
  specific ShareGroupImpl object. Vulkan backend will then use it to keeps
  the barrier tracker and other things that naturally fits the share group
  concept.
  
  Bug: angleproject:4664
  Change-Id: Ifcd975cbdf5130022e21c41397894afc28f572e7
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2217252
  Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Charlie Lao <cclao@google.com>
  

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• src/libANGLE/renderer/null/DisplayNULL.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.
  //
  // DisplayNULL.cpp:
  //    Implements the class methods for DisplayNULL.
  //
  
  #include "libANGLE/renderer/null/DisplayNULL.h"
  
  #include "common/debug.h"
  
  #include "libANGLE/renderer/null/ContextNULL.h"
  #include "libANGLE/renderer/null/DeviceNULL.h"
  #include "libANGLE/renderer/null/ImageNULL.h"
  #include "libANGLE/renderer/null/SurfaceNULL.h"
  
  namespace rx
  {
  
  DisplayNULL::DisplayNULL(const egl::DisplayState &state) : DisplayImpl(state) {}
  
  DisplayNULL::~DisplayNULL() {}
  
  egl::Error DisplayNULL::initialize(egl::Display *display)
  {
      constexpr size_t kMaxTotalAllocationSize = 1 << 28;  // 256MB
      mAllocationTracker.reset(new AllocationTrackerNULL(kMaxTotalAllocationSize));
  
      return egl::NoError();
  }
  
  void DisplayNULL::terminate()
  {
      mAllocationTracker.reset();
  }
  
  egl::Error DisplayNULL::makeCurrent(egl::Surface *drawSurface,
                                      egl::Surface *readSurface,
                                      gl::Context *context)
  {
      return egl::NoError();
  }
  
  egl::ConfigSet DisplayNULL::generateConfigs()
  {
      egl::Config config;
      config.renderTargetFormat    = GL_RGBA8;
      config.depthStencilFormat    = GL_DEPTH24_STENCIL8;
      config.bufferSize            = 32;
      config.redSize               = 8;
      config.greenSize             = 8;
      config.blueSize              = 8;
      config.alphaSize             = 8;
      config.alphaMaskSize         = 0;
      config.bindToTextureRGB      = EGL_TRUE;
      config.bindToTextureRGBA     = EGL_TRUE;
      config.colorBufferType       = EGL_RGB_BUFFER;
      config.configCaveat          = EGL_NONE;
      config.conformant            = EGL_OPENGL_ES2_BIT | EGL_OPENGL_ES3_BIT;
      config.depthSize             = 24;
      config.level                 = 0;
      config.matchNativePixmap     = EGL_NONE;
      config.maxPBufferWidth       = 0;
      config.maxPBufferHeight      = 0;
      config.maxPBufferPixels      = 0;
      config.maxSwapInterval       = 1;
      config.minSwapInterval       = 1;
      config.nativeRenderable      = EGL_TRUE;
      config.nativeVisualID        = 0;
      config.nativeVisualType      = EGL_NONE;
      config.renderableType        = EGL_OPENGL_ES2_BIT | EGL_OPENGL_ES3_BIT;
      config.sampleBuffers         = 0;
      config.samples               = 0;
      config.stencilSize           = 8;
      config.surfaceType           = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
      config.optimalOrientation    = 0;
      config.transparentType       = EGL_NONE;
      config.transparentRedValue   = 0;
      config.transparentGreenValue = 0;
      config.transparentBlueValue  = 0;
  
      egl::ConfigSet configSet;
      configSet.add(config);
      return configSet;
  }
  
  bool DisplayNULL::testDeviceLost()
  {
      return false;
  }
  
  egl::Error DisplayNULL::restoreLostDevice(const egl::Display *display)
  {
      return egl::NoError();
  }
  
  bool DisplayNULL::isValidNativeWindow(EGLNativeWindowType window) const
  {
      return true;
  }
  
  std::string DisplayNULL::getVendorString() const
  {
      return "NULL";
  }
  
  DeviceImpl *DisplayNULL::createDevice()
  {
      return new DeviceNULL();
  }
  
  egl::Error DisplayNULL::waitClient(const gl::Context *context)
  {
      return egl::NoError();
  }
  
  egl::Error DisplayNULL::waitNative(const gl::Context *context, EGLint engine)
  {
      return egl::NoError();
  }
  
  gl::Version DisplayNULL::getMaxSupportedESVersion() const
  {
      return gl::Version(3, 2);
  }
  
  gl::Version DisplayNULL::getMaxConformantESVersion() const
  {
      return getMaxSupportedESVersion();
  }
  
  SurfaceImpl *DisplayNULL::createWindowSurface(const egl::SurfaceState &state,
                                                EGLNativeWindowType window,
                                                const egl::AttributeMap &attribs)
  {
      return new SurfaceNULL(state);
  }
  
  SurfaceImpl *DisplayNULL::createPbufferSurface(const egl::SurfaceState &state,
                                                 const egl::AttributeMap &attribs)
  {
      return new SurfaceNULL(state);
  }
  
  SurfaceImpl *DisplayNULL::createPbufferFromClientBuffer(const egl::SurfaceState &state,
                                                          EGLenum buftype,
                                                          EGLClientBuffer buffer,
                                                          const egl::AttributeMap &attribs)
  {
      return new SurfaceNULL(state);
  }
  
  SurfaceImpl *DisplayNULL::createPixmapSurface(const egl::SurfaceState &state,
                                                NativePixmapType nativePixmap,
                                                const egl::AttributeMap &attribs)
  {
      return new SurfaceNULL(state);
  }
  
  ImageImpl *DisplayNULL::createImage(const egl::ImageState &state,
                                      const gl::Context *context,
                                      EGLenum target,
                                      const egl::AttributeMap &attribs)
  {
      return new ImageNULL(state);
  }
  
  rx::ContextImpl *DisplayNULL::createContext(const gl::State &state,
                                              gl::ErrorSet *errorSet,
                                              const egl::Config *configuration,
                                              const gl::Context *shareContext,
                                              const egl::AttributeMap &attribs)
  {
      return new ContextNULL(state, errorSet, mAllocationTracker.get());
  }
  
  StreamProducerImpl *DisplayNULL::createStreamProducerD3DTexture(
      egl::Stream::ConsumerType consumerType,
      const egl::AttributeMap &attribs)
  {
      UNIMPLEMENTED();
      return nullptr;
  }
  
  ShareGroupImpl *DisplayNULL::createShareGroup()
  {
      return new ShareGroupNULL();
  }
  
  void DisplayNULL::generateExtensions(egl::DisplayExtensions *outExtensions) const
  {
      outExtensions->createContextRobustness            = true;
      outExtensions->postSubBuffer                      = true;
      outExtensions->createContext                      = true;
      outExtensions->deviceQuery                        = true;
      outExtensions->image                              = true;
      outExtensions->imageBase                          = true;
      outExtensions->glTexture2DImage                   = true;
      outExtensions->glTextureCubemapImage              = true;
      outExtensions->glTexture3DImage                   = true;
      outExtensions->glRenderbufferImage                = true;
      outExtensions->getAllProcAddresses                = true;
      outExtensions->flexibleSurfaceCompatibility       = true;
      outExtensions->directComposition                  = true;
      outExtensions->createContextNoError               = true;
      outExtensions->createContextWebGLCompatibility    = true;
      outExtensions->createContextBindGeneratesResource = true;
      outExtensions->swapBuffersWithDamage              = true;
      outExtensions->pixelFormatFloat                   = true;
      outExtensions->surfacelessContext                 = true;
      outExtensions->displayTextureShareGroup           = true;
      outExtensions->createContextClientArrays          = true;
      outExtensions->programCacheControl                = true;
      outExtensions->robustResourceInitialization       = true;
  }
  
  void DisplayNULL::generateCaps(egl::Caps *outCaps) const
  {
      outCaps->textureNPOT = true;
  }
  
  }  // namespace rx
  

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