Remove DxEngine (#16278)

With AtlasEngine being fairly stable at this point and being enabled
by default in the 1.19 branch, this changeset removes DxEngine.

## Validation Steps Performed
* WT builds and runs ✅
* WpfTestNetCore ✅
* Saving the config removes the `useAtlasEngine` key ✅

OpenConsole.sln

@@ -161,8 +161,6 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "RendererVt.unittest", "src\
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "BufferOut", "src\buffer\out\lib\bufferout.vcxproj", "{0CF235BD-2DA0-407E-90EE-C467E8BBC714}"
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "RendererDx", "src\renderer\dx\lib\dx.vcxproj", "{48D21369-3D7B-4431-9967-24E81292CF62}"
-EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "TerminalConnection", "src\cascadia\TerminalConnection\TerminalConnection.vcxproj", "{CA5CAD1A-C46D-4588-B1C0-40F31AE9100B}"
  ProjectSection(ProjectDependencies) = postProject
  {71CC9D78-BA29-4D93-946F-BEF5D9A3A6EF} = {71CC9D78-BA29-4D93-946F-BEF5D9A3A6EF}
@@ -173,7 +171,6 @@ EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Microsoft.Terminal.Control.Lib", "src\cascadia\TerminalControl\TerminalControlLib.vcxproj", "{CA5CAD1A-44BD-4AC7-AC72-6CA5B3AB89ED}"
  ProjectSection(ProjectDependencies) = postProject
  {1CF55140-EF6A-4736-A403-957E4F7430BB} = {1CF55140-EF6A-4736-A403-957E4F7430BB}
- {48D21369-3D7B-4431-9967-24E81292CF62} = {48D21369-3D7B-4431-9967-24E81292CF62}
  {48D21369-3D7B-4431-9967-24E81292CF63} = {48D21369-3D7B-4431-9967-24E81292CF63}
  {8222900C-8B6C-452A-91AC-BE95DB04B95F} = {8222900C-8B6C-452A-91AC-BE95DB04B95F}
  {AF0A096A-8B3A-4949-81EF-7DF8F0FEE91F} = {AF0A096A-8B3A-4949-81EF-7DF8F0FEE91F}
@@ -319,8 +316,6 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Scripts", "Scripts", "{D3EF
  build\scripts\Test-WindowsTerminalPackage.ps1 = build\scripts\Test-WindowsTerminalPackage.ps1
  EndProjectSection
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Dx.Unit.Tests", "src\renderer\dx\ut_dx\Dx.Unit.Tests.vcxproj", "{95B136F9-B238-490C-A7C5-5843C1FECAC4}"
-EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "winconpty.Tests.Feature", "src\winconpty\ft_pty\winconpty.FeatureTests.vcxproj", "{024052DE-83FB-4653-AEA4-90790D29D5BD}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "TerminalAzBridge", "src\cascadia\TerminalAzBridge\TerminalAzBridge.vcxproj", "{067F0A06-FCB7-472C-96E9-B03B54E8E18D}"
@@ -1260,32 +1255,6 @@ Global
  {0CF235BD-2DA0-407E-90EE-C467E8BBC714}.Release|x64.Build.0 = Release|x64
  {0CF235BD-2DA0-407E-90EE-C467E8BBC714}.Release|x86.ActiveCfg = Release|Win32
  {0CF235BD-2DA0-407E-90EE-C467E8BBC714}.Release|x86.Build.0 = Release|Win32
- {48D21369-3D7B-4431-9967-24E81292CF62}.AuditMode|Any CPU.ActiveCfg = AuditMode|Win32
- {48D21369-3D7B-4431-9967-24E81292CF62}.AuditMode|ARM64.ActiveCfg = AuditMode|ARM64
- {48D21369-3D7B-4431-9967-24E81292CF62}.AuditMode|ARM64.Build.0 = AuditMode|ARM64
- {48D21369-3D7B-4431-9967-24E81292CF62}.AuditMode|x64.ActiveCfg = AuditMode|x64
- {48D21369-3D7B-4431-9967-24E81292CF62}.AuditMode|x64.Build.0 = AuditMode|x64
- {48D21369-3D7B-4431-9967-24E81292CF62}.AuditMode|x86.ActiveCfg = AuditMode|Win32
- {48D21369-3D7B-4431-9967-24E81292CF62}.AuditMode|x86.Build.0 = AuditMode|Win32
- {48D21369-3D7B-4431-9967-24E81292CF62}.Debug|Any CPU.ActiveCfg = Debug|Win32
- {48D21369-3D7B-4431-9967-24E81292CF62}.Debug|ARM64.ActiveCfg = Debug|ARM64
- {48D21369-3D7B-4431-9967-24E81292CF62}.Debug|ARM64.Build.0 = Debug|ARM64
- {48D21369-3D7B-4431-9967-24E81292CF62}.Debug|x64.ActiveCfg = Debug|x64
- {48D21369-3D7B-4431-9967-24E81292CF62}.Debug|x64.Build.0 = Debug|x64
- {48D21369-3D7B-4431-9967-24E81292CF62}.Debug|x86.ActiveCfg = Debug|Win32
- {48D21369-3D7B-4431-9967-24E81292CF62}.Debug|x86.Build.0 = Debug|Win32
- {48D21369-3D7B-4431-9967-24E81292CF62}.Fuzzing|Any CPU.ActiveCfg = Fuzzing|Win32
- {48D21369-3D7B-4431-9967-24E81292CF62}.Fuzzing|ARM64.ActiveCfg = Fuzzing|ARM64
- {48D21369-3D7B-4431-9967-24E81292CF62}.Fuzzing|x64.ActiveCfg = Fuzzing|x64
- {48D21369-3D7B-4431-9967-24E81292CF62}.Fuzzing|x64.Build.0 = Fuzzing|x64
- {48D21369-3D7B-4431-9967-24E81292CF62}.Fuzzing|x86.ActiveCfg = Fuzzing|Win32
- {48D21369-3D7B-4431-9967-24E81292CF62}.Release|Any CPU.ActiveCfg = Release|Win32
- {48D21369-3D7B-4431-9967-24E81292CF62}.Release|ARM64.ActiveCfg = Release|ARM64
- {48D21369-3D7B-4431-9967-24E81292CF62}.Release|ARM64.Build.0 = Release|ARM64
- {48D21369-3D7B-4431-9967-24E81292CF62}.Release|x64.ActiveCfg = Release|x64
- {48D21369-3D7B-4431-9967-24E81292CF62}.Release|x64.Build.0 = Release|x64
- {48D21369-3D7B-4431-9967-24E81292CF62}.Release|x86.ActiveCfg = Release|Win32
- {48D21369-3D7B-4431-9967-24E81292CF62}.Release|x86.Build.0 = Release|Win32
  {CA5CAD1A-C46D-4588-B1C0-40F31AE9100B}.AuditMode|Any CPU.ActiveCfg = Debug|Win32
  {CA5CAD1A-C46D-4588-B1C0-40F31AE9100B}.AuditMode|ARM64.ActiveCfg = Release|ARM64
  {CA5CAD1A-C46D-4588-B1C0-40F31AE9100B}.AuditMode|x64.ActiveCfg = AuditMode|x64
@@ -1779,30 +1748,6 @@ Global
  {A602A555-BAAC-46E1-A91D-3DAB0475C5A1}.Release|x64.Build.0 = Release|x64
  {A602A555-BAAC-46E1-A91D-3DAB0475C5A1}.Release|x86.ActiveCfg = Release|Win32
  {A602A555-BAAC-46E1-A91D-3DAB0475C5A1}.Release|x86.Build.0 = Release|Win32
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.AuditMode|Any CPU.ActiveCfg = AuditMode|Win32
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.AuditMode|ARM64.ActiveCfg = AuditMode|ARM64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.AuditMode|ARM64.Build.0 = AuditMode|ARM64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.AuditMode|x64.ActiveCfg = Release|x64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.AuditMode|x86.ActiveCfg = AuditMode|Win32
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.AuditMode|x86.Build.0 = AuditMode|Win32
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Debug|Any CPU.ActiveCfg = Debug|Win32
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Debug|ARM64.ActiveCfg = Debug|ARM64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Debug|ARM64.Build.0 = Debug|ARM64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Debug|x64.ActiveCfg = Debug|x64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Debug|x64.Build.0 = Debug|x64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Debug|x86.ActiveCfg = Debug|Win32
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Debug|x86.Build.0 = Debug|Win32
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Fuzzing|Any CPU.ActiveCfg = Fuzzing|Win32
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Fuzzing|ARM64.ActiveCfg = Fuzzing|ARM64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Fuzzing|x64.ActiveCfg = Fuzzing|x64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Fuzzing|x86.ActiveCfg = Fuzzing|Win32
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Release|Any CPU.ActiveCfg = Release|Win32
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Release|ARM64.ActiveCfg = Release|ARM64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Release|ARM64.Build.0 = Release|ARM64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Release|x64.ActiveCfg = Release|x64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Release|x64.Build.0 = Release|x64
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Release|x86.ActiveCfg = Release|Win32
- {95B136F9-B238-490C-A7C5-5843C1FECAC4}.Release|x86.Build.0 = Release|Win32
  {024052DE-83FB-4653-AEA4-90790D29D5BD}.AuditMode|Any CPU.ActiveCfg = AuditMode|Win32
  {024052DE-83FB-4653-AEA4-90790D29D5BD}.AuditMode|ARM64.ActiveCfg = AuditMode|ARM64
  {024052DE-83FB-4653-AEA4-90790D29D5BD}.AuditMode|ARM64.Build.0 = AuditMode|ARM64
@@ -2485,7 +2430,6 @@ Global
  {18D09A24-8240-42D6-8CB6-236EEE820263} = {89CDCC5C-9F53-4054-97A4-639D99F169CD}
  {990F2657-8580-4828-943F-5DD657D11843} = {05500DEF-2294-41E3-AF9A-24E580B82836}
  {0CF235BD-2DA0-407E-90EE-C467E8BBC714} = {1E4A062E-293B-4817-B20D-BF16B979E350}
- {48D21369-3D7B-4431-9967-24E81292CF62} = {05500DEF-2294-41E3-AF9A-24E580B82836}
  {CA5CAD1A-C46D-4588-B1C0-40F31AE9100B} = {59840756-302F-44DF-AA47-441A9D673202}
  {CA5CAD1A-ABCD-429C-B551-8562EC954746} = {9921CA0A-320C-4460-8623-3A3196E7F4CB}
  {CA5CAD1A-44BD-4AC7-AC72-6CA5B3AB89ED} = {9921CA0A-320C-4460-8623-3A3196E7F4CB}
@@ -2515,7 +2459,6 @@ Global
  {53DD5520-E64C-4C06-B472-7CE62CA539C9} = {04170EEF-983A-4195-BFEF-2321E5E38A1E}
  {6B5A44ED-918D-4747-BFB1-2472A1FCA173} = {04170EEF-983A-4195-BFEF-2321E5E38A1E}
  {D3EF7B96-CD5E-47C9-B9A9-136259563033} = {04170EEF-983A-4195-BFEF-2321E5E38A1E}
- {95B136F9-B238-490C-A7C5-5843C1FECAC4} = {05500DEF-2294-41E3-AF9A-24E580B82836}
  {024052DE-83FB-4653-AEA4-90790D29D5BD} = {E8F24881-5E37-4362-B191-A3BA0ED7F4EB}
  {067F0A06-FCB7-472C-96E9-B03B54E8E18D} = {61901E80-E97D-4D61-A9BB-E8F2FDA8B40C}
  {6BAE5851-50D5-4934-8D5E-30361A8A40F3} = {81C352DB-1818-45B7-A284-18E259F1CC87}

doc/cascadia/profiles.schema.json

@@ -2791,11 +2791,6 @@
  "description": "Use to set a path to a pixel shader to use with the Terminal. Overrides `experimental.retroTerminalEffect`. This is an experimental feature, and its continued existence is not guaranteed.",
  "type": "string"
  },
- "useAtlasEngine": {
- "description": "Windows Terminal 1.16 and later ship with a new, performant text renderer. Set this to false to revert back to the old text renderer.",
- "type": "boolean",
- "default": true
- },
  "fontFace": {
  "default": "Cascadia Mono",
  "description": "[deprecated] Define 'face' within the 'font' object instead.",

src/cascadia/TerminalControl/ControlCore.cpp

@@ -17,7 +17,6 @@
 #include "EventArgs.h"
 #include "../../buffer/out/search.h"
 #include "../../renderer/atlas/AtlasEngine.h"
-#include "../../renderer/dx/DxRenderer.hpp"
 
 #include "ControlCore.g.cpp"
 #include "SelectionColor.g.cpp"
@@ -335,15 +334,7 @@ namespace winrt::Microsoft::Terminal::Control::implementation
  return false;
  }
 
- if (_settings->UseAtlasEngine())
- {
- _renderEngine = std::make_unique<::Microsoft::Console::Render::AtlasEngine>();
- }
- else
- {
- _renderEngine = std::make_unique<::Microsoft::Console::Render::DxEngine>();
- }
-
+ _renderEngine = std::make_unique<::Microsoft::Console::Render::AtlasEngine>();
  _renderer->AddRenderEngine(_renderEngine.get());
 
  // Initialize our font with the renderer
@@ -359,7 +350,7 @@ namespace winrt::Microsoft::Terminal::Control::implementation
  const auto viewInPixels = Viewport::FromDimensions({ 0, 0 }, windowSize);
  LOG_IF_FAILED(_renderEngine->SetWindowSize({ viewInPixels.Width(), viewInPixels.Height() }));
 
- // Update DxEngine's SelectionBackground
+ // Update AtlasEngine's SelectionBackground
  _renderEngine->SetSelectionBackground(til::color{ _settings->SelectionBackground() });
 
  const auto vp = _renderEngine->GetViewportInCharacters(viewInPixels);
@@ -915,10 +906,10 @@ namespace winrt::Microsoft::Terminal::Control::implementation
  // Update the terminal core with its new Core settings
  _terminal->UpdateAppearance(*newAppearance);
 
- // Update DxEngine settings under the lock
+ // Update AtlasEngine settings under the lock
  if (_renderEngine)
  {
- // Update DxEngine settings under the lock
+ // Update AtlasEngine settings under the lock
  _renderEngine->SetSelectionBackground(til::color{ newAppearance->SelectionBackground() });
  _renderEngine->SetRetroTerminalEffect(newAppearance->RetroTerminalEffect());
  _renderEngine->SetPixelShaderPath(newAppearance->PixelShaderPath());
@@ -954,7 +945,7 @@ namespace winrt::Microsoft::Terminal::Control::implementation
  void ControlCore::_updateAntiAliasingMode()
  {
  D2D1_TEXT_ANTIALIAS_MODE mode;
- // Update DxEngine's AntialiasingMode
+ // Update AtlasEngine's AntialiasingMode
  switch (_settings->AntialiasingMode())
  {
  case TextAntialiasingMode::Cleartype:

src/cascadia/TerminalControl/ControlCore.h

@@ -5,7 +5,7 @@
 // - ControlCore.h
 //
 // Abstract:
-// - This encapsulates a `Terminal` instance, a `DxEngine` and `Renderer`, and
+// - This encapsulates a `Terminal` instance, a `AtlasEngine` and `Renderer`, and
 // an `ITerminalConnection`. This is intended to be everything that someone
 // might need to stand up a terminal instance in a control, but without any
 // regard for how the UX works.

src/cascadia/TerminalControl/HwndTerminal.cpp

@@ -3,11 +3,18 @@
 
 #include "pch.h"
 #include "HwndTerminal.hpp"
-#include <windowsx.h>
+
 #include <DefaultSettings.h>
+#include <windowsx.h>
+
+#include "HwndTerminalAutomationPeer.hpp"
+#include "../../cascadia/TerminalCore/Terminal.hpp"
+#include "../../renderer/atlas/AtlasEngine.h"
+#include "../../renderer/base/renderer.hpp"
+#include "../../renderer/uia/UiaRenderer.hpp"
 #include "../../types/viewport.cpp"
-#include "../../types/inc/GlyphWidth.hpp"
 
+using namespace ::Microsoft::Console::VirtualTerminal;
 using namespace ::Microsoft::Terminal::Core;
 
 static LPCWSTR term_window_class = L"HwndTerminalClass";
@@ -102,25 +109,23 @@ try
  }
  break;
  case WM_RBUTTONDOWN:
- if (publicTerminal->_terminal && publicTerminal->_terminal->IsSelectionActive())
+ try
  {
- try
+ if (publicTerminal->_terminal)
  {
- Terminal::TextCopyData bufferData;
+ const auto lock = publicTerminal->_terminal->LockForWriting();
+ if (publicTerminal->_terminal->IsSelectionActive())
  {
- const auto lock = publicTerminal->_terminal->LockForWriting();
- bufferData = publicTerminal->_terminal->RetrieveSelectedTextFromBuffer(false, true, true);
+ const auto bufferData = publicTerminal->_terminal->RetrieveSelectedTextFromBuffer(false, true, true);
+ LOG_IF_FAILED(publicTerminal->_CopyTextToSystemClipboard(bufferData.plainText, bufferData.html, bufferData.rtf));
+ publicTerminal->_ClearSelection();
+ return 0;
  }
- LOG_IF_FAILED(publicTerminal->_CopyTextToSystemClipboard(bufferData.plainText, bufferData.html, bufferData.rtf));
- publicTerminal->_ClearSelection();
  }
- CATCH_LOG();
- }
- else
- {
  publicTerminal->_PasteTextFromClipboard();
+ return 0;
  }
- return 0;
+ CATCH_LOG();
  case WM_DESTROY:
  // Release Terminal's hwnd so Teardown doesn't try to destroy it again
  publicTerminal->_hwnd.release();
@@ -210,10 +215,10 @@ HRESULT HwndTerminal::Initialize()
  RETURN_HR_IF_NULL(E_POINTER, localPointerToThread);
  RETURN_IF_FAILED(localPointerToThread->Initialize(_renderer.get()));
 
- auto dxEngine = std::make_unique<::Microsoft::Console::Render::DxEngine>();
- RETURN_IF_FAILED(dxEngine->SetHwnd(_hwnd.get()));
- RETURN_IF_FAILED(dxEngine->Enable());
- _renderer->AddRenderEngine(dxEngine.get());
+ auto engine = std::make_unique<::Microsoft::Console::Render::AtlasEngine>();
+ RETURN_IF_FAILED(engine->SetHwnd(_hwnd.get()));
+ RETURN_IF_FAILED(engine->Enable());
+ _renderer->AddRenderEngine(engine.get());
 
  _UpdateFont(USER_DEFAULT_SCREEN_DPI);
  RECT windowRect;
@@ -224,9 +229,9 @@ HRESULT HwndTerminal::Initialize()
  // Fist set up the dx engine with the window size in pixels.
  // Then, using the font, get the number of characters that can fit.
  const auto viewInPixels = Viewport::FromDimensions({ 0, 0 }, windowSize);
- RETURN_IF_FAILED(dxEngine->SetWindowSize({ viewInPixels.Width(), viewInPixels.Height() }));
+ RETURN_IF_FAILED(engine->SetWindowSize({ viewInPixels.Width(), viewInPixels.Height() }));
 
- _renderEngine = std::move(dxEngine);
+ _renderEngine = std::move(engine);
 
  _terminal->Create({ 80, 25 }, 9001, *_renderer);
  _terminal->SetWriteInputCallback([=](std::wstring_view input) noexcept { _WriteTextToConnection(input); });
@@ -749,7 +754,7 @@ try
  ScreenToClient(_hwnd.get(), cursorPosition.as_win32_point());
  }
 
- const TerminalInput::MouseButtonState state{
+ const Microsoft::Console::VirtualTerminal::TerminalInput::MouseButtonState state{
  WI_IsFlagSet(GetKeyState(VK_LBUTTON), KeyPressed),
  WI_IsFlagSet(GetKeyState(VK_MBUTTON), KeyPressed),
  WI_IsFlagSet(GetKeyState(VK_RBUTTON), KeyPressed)
@@ -894,7 +899,7 @@ void _stdcall TerminalSetTheme(void* terminal, TerminalTheme theme, LPCWSTR font
  [[gsl::suppress(bounds .3)]] renderSettings.SetColorTableEntry(tableIndex, gsl::at(theme.ColorTable, tableIndex));
  }
 
- publicTerminal->_terminal->SetCursorStyle(static_cast<DispatchTypes::CursorStyle>(theme.CursorStyle));
+ publicTerminal->_terminal->SetCursorStyle(static_cast<Microsoft::Console::VirtualTerminal::DispatchTypes::CursorStyle>(theme.CursorStyle));
 
  publicTerminal->_desiredFont = { fontFamily, 0, DEFAULT_FONT_WEIGHT, static_cast<float>(fontSize), CP_UTF8 };
  publicTerminal->_UpdateFont(newDpi);

src/cascadia/TerminalControl/HwndTerminal.hpp

@@ -3,14 +3,31 @@
 
 #pragma once
 
-#include "../../renderer/base/Renderer.hpp"
-#include "../../renderer/dx/DxRenderer.hpp"
-#include "../../renderer/uia/UiaRenderer.hpp"
-#include "../../cascadia/TerminalCore/Terminal.hpp"
+#include "../../buffer/out/textBuffer.hpp"
+#include "../../renderer/inc/FontInfoDesired.hpp"
 #include "../../types/IControlAccessibilityInfo.h"
-#include "HwndTerminalAutomationPeer.hpp"
 
-using namespace Microsoft::Console::VirtualTerminal;
+namespace Microsoft::Console::Render::Atlas
+{
+ class AtlasEngine;
+}
+
+namespace Microsoft::Console::Render
+{
+ using AtlasEngine = Atlas::AtlasEngine;
+ class IRenderData;
+ class Renderer;
+ class UiaEngine;
+}
+
+namespace Microsoft::Terminal::Core
+{
+ class Terminal;
+}
+
+class FontInfo;
+class FontInfoDesired;
+class HwndTerminalAutomationPeer;
 
 // Keep in sync with TerminalTheme.cs
 typedef struct _TerminalTheme
@@ -79,7 +96,7 @@ struct HwndTerminal : ::Microsoft::Console::Types::IControlAccessibilityInfo
  std::unique_ptr<::Microsoft::Terminal::Core::Terminal> _terminal;
 
  std::unique_ptr<::Microsoft::Console::Render::Renderer> _renderer;
- std::unique_ptr<::Microsoft::Console::Render::DxEngine> _renderEngine;
+ std::unique_ptr<::Microsoft::Console::Render::AtlasEngine> _renderEngine;
  std::unique_ptr<::Microsoft::Console::Render::UiaEngine> _uiaEngine;
 
  bool _focused{ false };

src/cascadia/TerminalControl/IControlSettings.idl

@@ -35,8 +35,6 @@ namespace Microsoft.Terminal.Control
  Boolean EnableUnfocusedAcrylic;
  ScrollbarState ScrollState { get; };
 
- Boolean UseAtlasEngine { get; };
-
  String FontFace { get; };
  Single FontSize { get; };
  Windows.UI.Text.FontWeight FontWeight { get; };