Yet Another Model Converter for GameMaker

Yet Another Model Converter (YAMC) is a tiny tool that loads a model from one of many supported file formats and exports it into a binary file that can be simply loaded in GameMaker using functions buffer_load and vertex_create_buffer_from_buffer.

See file yamc.gml for simple utility functions. The utils folder also includes a shader that you can use as a base for your custom ones. If you are not familiar with shaders, you can also draw the models using GameMaker's built-in shaders with lighting, fog etc. See examples folder for little example projects.

• Convert static model into a binary file, easily loadable using functions buffer_load and vertex_create_buffer_from_buffer.
• Customizable vertex format. Supports 3D position, normal, texcoord (up to two layers), color and tangent vector with bitangent sign (float4).
• Invert vertex winding order.
• Convert to -Y-up (default) or +Z-up space.
• Generate flat or smooth normals if the model has none.
• Flip UV coordinates on the Y axis.
• Bake materials' diffuse colors into vertex colors.

• The entire model is collapsed into a single vertex buffer, therefore it cannot have sub-meshes with different textures/materials/shaders, different vertex formats and different primitive types (the entire model needs to be either point list, line list or a triangle list).
• Animations are not supported.

Run yamc -h to see help message with all arguments and their description.

Following commands build yamc binary into folder dist. Requires CMake 3.23 at least and a C++17 compiler!

git clone https://github.com/blueburncz/YAMC.git
cd YAMC
cmake -B build -S .
cmake --build ./build/ --config=Release

• Assimp - Used to load models.
• BBMOD - More advanced tool with support for animated models and a huge library for advanced 3D rendering in GameMaker.