kc3-lang/angle/src/libANGLE/Overlay.h

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• Hash : 5b4f6e31
  Author :
  Date : 2020-08-15T23:03:34
  

  Vulkan: Add overlay widget for RP buffer count.
  
  Can help evaluate when scenes stress out the resource tracking in the
  RenderPass command buffer.
  
  Bug: angleproject:4950
  Bug: angleproject:4965
  Change-Id: I7da2ad0101a840c5441f2112db4bb61f564afcef
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2358521
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>
  

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• src/libANGLE/Overlay.h

• //
  // 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.
  //
  // Overlay.h:
  //    Defines the Overlay class that handles overlay widgets.
  //
  
  #ifndef LIBANGLE_OVERLAY_H_
  #define LIBANGLE_OVERLAY_H_
  
  #include "common/PackedEnums.h"
  #include "common/angleutils.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/OverlayWidgets.h"
  #include "libANGLE/angletypes.h"
  
  namespace rx
  {
  class OverlayImpl;
  class GLImplFactory;
  }  // namespace rx
  
  namespace gl
  {
  class Context;
  
  class OverlayState : angle::NonCopyable
  {
    public:
      OverlayState();
      ~OverlayState();
  
      size_t getWidgetCoordinatesBufferSize() const;
      size_t getTextWidgetsBufferSize() const;
      size_t getGraphWidgetsBufferSize() const;
  
      void initFontData(uint8_t *fontData) const;
      void fillEnabledWidgetCoordinates(const gl::Extents &imageExtents,
                                        uint8_t *enabledWidgetsPtr) const;
      void fillWidgetData(const gl::Extents &imageExtents,
                          uint8_t *textData,
                          uint8_t *graphData) const;
  
      uint32_t getEnabledWidgetCount() const { return mEnabledWidgetCount; }
  
    private:
      friend class Overlay;
  
      uint32_t mEnabledWidgetCount;
  
      angle::PackedEnumMap<WidgetId, std::unique_ptr<overlay::Widget>> mOverlayWidgets;
  };
  
  class Overlay : angle::NonCopyable
  {
    public:
      Overlay(rx::GLImplFactory *implFactory);
      ~Overlay();
  
      angle::Result init(const Context *context);
      void destroy(const gl::Context *context);
  
      void onSwap() const;
  
      overlay::Text *getTextWidget(WidgetId id) const
      {
          return getWidgetAs<overlay::Text, WidgetType::Text>(id);
      }
      overlay::Count *getCountWidget(WidgetId id) const
      {
          return getWidgetAs<overlay::Count, WidgetType::Count>(id);
      }
      overlay::PerSecond *getPerSecondWidget(WidgetId id) const
      {
          return getWidgetAs<overlay::PerSecond, WidgetType::PerSecond>(id);
      }
      overlay::RunningGraph *getRunningGraphWidget(WidgetId id) const
      {
          return getWidgetAs<overlay::RunningGraph, WidgetType::RunningGraph>(id);
      }
      overlay::RunningHistogram *getRunningHistogramWidget(WidgetId id) const
      {
          return getWidgetAs<overlay::RunningHistogram, WidgetType::RunningHistogram>(id);
      }
  
      rx::OverlayImpl *getImplementation() const { return mImplementation.get(); }
  
      bool isEnabled() const { return mImplementation != nullptr; }
  
    private:
      template <typename Widget, WidgetType Type>
      Widget *getWidgetAs(WidgetId id) const
      {
          ASSERT(mState.mOverlayWidgets[id] != nullptr);
          ASSERT(mState.mOverlayWidgets[id]->type == Type);
          return rx::GetAs<Widget>(mState.mOverlayWidgets[id].get());
      }
      void initOverlayWidgets();
      void enableOverlayWidgetsFromEnvironment();
  
      // Time tracking for PerSecond items.
      mutable double mLastPerSecondUpdate;
  
      OverlayState mState;
      std::unique_ptr<rx::OverlayImpl> mImplementation;
  };
  
  class DummyOverlay
  {
    public:
      DummyOverlay(rx::GLImplFactory *implFactory);
      ~DummyOverlay();
  
      angle::Result init(const Context *context) { return angle::Result::Continue; }
      void destroy(const Context *context) {}
  
      void onSwap() const {}
  
      const overlay::Dummy *getTextWidget(WidgetId id) const { return &mDummy; }
      const overlay::Dummy *getCountWidget(WidgetId id) const { return &mDummy; }
      const overlay::Dummy *getPerSecondWidget(WidgetId id) const { return &mDummy; }
      const overlay::Dummy *getRunningGraphWidget(WidgetId id) const { return &mDummy; }
      const overlay::Dummy *getRunningHistogramWidget(WidgetId id) const { return &mDummy; }
  
      bool isEnabled() const { return false; }
  
    private:
      overlay::Dummy mDummy;
  };
  
  #if ANGLE_ENABLE_OVERLAY
  using OverlayType            = Overlay;
  using CountWidget            = overlay::Count;
  using PerSecondWidget        = overlay::PerSecond;
  using RunningGraphWidget     = overlay::RunningGraph;
  using RunningHistogramWidget = overlay::RunningHistogram;
  using TextWidget             = overlay::Text;
  #else   // !ANGLE_ENABLE_OVERLAY
  using OverlayType            = DummyOverlay;
  using CountWidget            = const overlay::Dummy;
  using PerSecondWidget        = const overlay::Dummy;
  using RunningGraphWidget     = const overlay::Dummy;
  using RunningHistogramWidget = const overlay::Dummy;
  using TextWidget             = const overlay::Dummy;
  #endif  // ANGLE_ENABLE_OVERLAY
  
  }  // namespace gl
  
  #endif  // LIBANGLE_OVERLAY_H_
  

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