Add investor demo compatibility launchers

AGRARIAN_DEVELOPMENT_ROADMAP.md

@@ -147,6 +147,10 @@ Current tooling decisions:
 - Windows compiler used by Unreal 5.7: VS 2022 Build Tools MSVC `14.44.35207`.
 - Packaged Windows demo wrapper: `Scripts/PackageWindowsDevelopment.bat`.
 - Current investor demo starts on the Ground Zero terrain map: `/Game/Agrarian/Maps/L_GroundZeroTerrain_Test`.
+- Rendering baseline: the project remains DX12-first for future Unreal 5
+  features, while packaged investor builds include a Windows compatibility
+  override and launchers so demo machines can start reliably with DX11 if DX12
+  startup fails.
 - Investor-demo release rule: whenever all tracked roadmap items for a version
   milestone are complete, including minor versions like `.01` or `.6` and major
   versions like `1`, build and smoke-test a fresh Windows packaged executable

Config/Windows/WindowsEngine.ini

@@ -0,0 +1,3 @@
+[/Script/WindowsTargetPlatform.WindowsTargetSettings]
+DefaultGraphicsRHI=DefaultGraphicsRHI_DX11
+

Scripts/InstallWindowsDemoLaunchers.bat

@@ -0,0 +1,89 @@
+@echo off
+setlocal
+
+set "PACKAGE_DIR=%~1"
+
+if "%PACKAGE_DIR%"=="" (
+  echo Usage: InstallWindowsDemoLaunchers.bat PACKAGE_DIR
+  exit /b 1
+)
+
+if not exist "%PACKAGE_DIR%\AgrarianGame.exe" (
+  echo Packaged AgrarianGame.exe was not found in:
+  echo %PACKAGE_DIR%
+  exit /b 1
+)
+
+set "DEFAULT_LAUNCHER=%PACKAGE_DIR%\Start Agrarian Demo.cmd"
+set "DX12_LAUNCHER=%PACKAGE_DIR%\Start Agrarian Demo - DX12.cmd"
+set "DX11_LAUNCHER=%PACKAGE_DIR%\Start Agrarian Demo - Compatibility DX11.cmd"
+set "PREREQ_LAUNCHER=%PACKAGE_DIR%\Install Prerequisites.cmd"
+set "README_FILE=%PACKAGE_DIR%\README-Investor-Demo.txt"
+
+> "%DEFAULT_LAUNCHER%" echo @echo off
+>> "%DEFAULT_LAUNCHER%" echo cd /d "%%~dp0"
+>> "%DEFAULT_LAUNCHER%" echo echo Starting Agrarian investor demo...
+>> "%DEFAULT_LAUNCHER%" echo echo.
+>> "%DEFAULT_LAUNCHER%" echo "AgrarianGame.exe" -windowed -ResX=1280 -ResY=720
+>> "%DEFAULT_LAUNCHER%" echo if errorlevel 1 ^(
+>> "%DEFAULT_LAUNCHER%" echo   echo.
+>> "%DEFAULT_LAUNCHER%" echo   echo Agrarian did not start cleanly.
+>> "%DEFAULT_LAUNCHER%" echo   echo Run "Install Prerequisites.cmd", then try "Start Agrarian Demo - Compatibility DX11.cmd".
+>> "%DEFAULT_LAUNCHER%" echo   pause
+>> "%DEFAULT_LAUNCHER%" echo ^)
+
+> "%DX12_LAUNCHER%" echo @echo off
+>> "%DX12_LAUNCHER%" echo cd /d "%%~dp0"
+>> "%DX12_LAUNCHER%" echo echo Starting Agrarian investor demo with DX12...
+>> "%DX12_LAUNCHER%" echo echo.
+>> "%DX12_LAUNCHER%" echo "AgrarianGame.exe" -d3d12 -windowed -ResX=1280 -ResY=720
+>> "%DX12_LAUNCHER%" echo if errorlevel 1 ^(
+>> "%DX12_LAUNCHER%" echo   echo.
+>> "%DX12_LAUNCHER%" echo   echo DX12 startup failed on this machine/session.
+>> "%DX12_LAUNCHER%" echo   echo Try "Start Agrarian Demo - Compatibility DX11.cmd".
+>> "%DX12_LAUNCHER%" echo   pause
+>> "%DX12_LAUNCHER%" echo ^)
+
+> "%DX11_LAUNCHER%" echo @echo off
+>> "%DX11_LAUNCHER%" echo cd /d "%%~dp0"
+>> "%DX11_LAUNCHER%" echo echo Starting Agrarian investor demo with DX11 compatibility mode...
+>> "%DX11_LAUNCHER%" echo echo.
+>> "%DX11_LAUNCHER%" echo "AgrarianGame.exe" -d3d11 -windowed -ResX=1280 -ResY=720
+>> "%DX11_LAUNCHER%" echo if errorlevel 1 ^(
+>> "%DX11_LAUNCHER%" echo   echo.
+>> "%DX11_LAUNCHER%" echo   echo Agrarian did not start cleanly in compatibility mode.
+>> "%DX11_LAUNCHER%" echo   echo Run "Install Prerequisites.cmd" and make sure the entire WindowsDevelopment folder was copied together.
+>> "%DX11_LAUNCHER%" echo   pause
+>> "%DX11_LAUNCHER%" echo ^)
+
+> "%PREREQ_LAUNCHER%" echo @echo off
+>> "%PREREQ_LAUNCHER%" echo cd /d "%%~dp0"
+>> "%PREREQ_LAUNCHER%" echo set "REDIST=Engine\Extras\Redist\en-us\vc_redist.x64.exe"
+>> "%PREREQ_LAUNCHER%" echo if not exist "%%REDIST%%" ^(
+>> "%PREREQ_LAUNCHER%" echo   echo Required installer was not found:
+>> "%PREREQ_LAUNCHER%" echo   echo %%CD%%\%%REDIST%%
+>> "%PREREQ_LAUNCHER%" echo   pause
+>> "%PREREQ_LAUNCHER%" echo   exit /b 1
+>> "%PREREQ_LAUNCHER%" echo ^)
+>> "%PREREQ_LAUNCHER%" echo echo Installing Microsoft Visual C++ runtime...
+>> "%PREREQ_LAUNCHER%" echo "%%REDIST%%" /install /quiet /norestart
+>> "%PREREQ_LAUNCHER%" echo echo.
+>> "%PREREQ_LAUNCHER%" echo echo Done. If Windows requested administrator approval, approve it and rerun this if needed.
+>> "%PREREQ_LAUNCHER%" echo pause
+
+> "%README_FILE%" echo Agrarian investor demo
+>> "%README_FILE%" echo.
+>> "%README_FILE%" echo Start with: Start Agrarian Demo.cmd
+>> "%README_FILE%" echo.
+>> "%README_FILE%" echo Important: copy or keep this entire WindowsDevelopment folder together. AgrarianGame.exe needs the AgrarianGame and Engine folders beside it.
+>> "%README_FILE%" echo.
+>> "%README_FILE%" echo If the demo does not open, run: Install Prerequisites.cmd
+>> "%README_FILE%" echo Then run: Start Agrarian Demo - Compatibility DX11.cmd
+>> "%README_FILE%" echo.
+>> "%README_FILE%" echo This investor build defaults to the Windows compatibility renderer so it opens reliably across more demo machines and remote sessions.
+>> "%README_FILE%" echo The main project remains DX12-first for future Unreal 5 rendering work.
+>> "%README_FILE%" echo If you specifically want to test DX12, use: Start Agrarian Demo - DX12.cmd
+
+echo Installed investor demo launchers in:
+echo %PACKAGE_DIR%
+exit /b 0

Scripts/PackageWindowsDevelopment.bat

@@ -54,6 +54,15 @@ if not "%PACKAGE_EXIT_CODE%"=="0" (
   exit /b %PACKAGE_EXIT_CODE%
 )
 
+call "%PROJECT_DIR%\Scripts\InstallWindowsDemoLaunchers.bat" "%ARCHIVE_DIR%"
+set "LAUNCHER_EXIT_CODE=%ERRORLEVEL%"
+
+if not "%LAUNCHER_EXIT_CODE%"=="0" (
+  echo.
+  echo Launcher install failed with exit code %LAUNCHER_EXIT_CODE%.
+  exit /b %LAUNCHER_EXIT_CODE%
+)
+
 echo.
 echo Package completed successfully.
 echo Archive: %ARCHIVE_DIR%