History

ocornut 513af1efc9 Examples: Updated all Visual Studio project file to use /utf-8 option, so string literals are UTF-8 encoded by default. (Not to misake with "Character Set" "Use Unicode Character Set" "Use Multi-Byte Character Set" which is a VS/Windows SDK thing but not a compiler-encoding thing.)		2023-05-10 12:34:11 +02:00
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example_allegro5.vcxproj	Examples: Updated all Visual Studio project file to use /utf-8 option, so string literals are UTF-8 encoded by default.	2023-05-10 12:34:11 +02:00
example_allegro5.vcxproj.filters	Examples: Windows: Added 'misc/debuggers/imgui.natstepfilter' file to all Visual Studio projects. (#3038 )	2023-03-15 17:09:09 +01:00
imconfig_allegro5.h	Examples: Renamed example folders. (#1870 )	2018-06-10 15:42:14 +02:00
main.cpp	Using nullptr in locations where warning disable is not convenient. (#6313 , #4537 )	2023-04-11 11:33:50 +02:00
README.md	Examples: Updated all Visual Studio project file to use /utf-8 option, so string literals are UTF-8 encoded by default.	2023-05-10 12:34:11 +02:00

README.md

Configuration

Dear ImGui outputs 16-bit vertex indices by default. Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_allegro5.cpp, or compile dear imgui with 32-bit indices. You can either modify imconfig.h that comes with Dear ImGui (easier), or set a C++ preprocessor option IMGUI_USER_CONFIG to find to a filename. We are providing imconfig_allegro5.h that enables 32-bit indices. Note that the backend supports BOTH 16-bit and 32-bit indices, but 32-bit indices will be slightly faster as they won't require a manual conversion.

How to Build

On Ubuntu 14.04+ and macOS

g++ -DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" -I .. -I ../.. -I ../../backends main.cpp ../../backends/imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_main -lallegro_primitives -o allegro5_example

On macOS, install Allegro with homebrew: brew install allegro.

On Windows with Visual Studio's CLI

You may install Allegro using vcpkg:

git clone https://github.com/Microsoft/vcpkg
cd vcpkg
bootstrap-vcpkg.bat
vcpkg install allegro5 --triplet=x86-windows	; for win32
vcpkg install allegro5 --triplet=x64-windows	; for win64
vcpkg integrate install						    ; register include / libs in Visual Studio

Build:

set ALLEGRODIR=path_to_your_allegro5_folder
cl /Zi /MD /utf-8 /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" /I .. /I ..\.. /I ..\..\backends main.cpp ..\..\backends\imgui_impl_allegro5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib