This asset has only been tested with GameMaker: Studio 1.
Download demo: https://1drv.ms/u/s!AppH38QcoEBfh-RIhch1_DK_QjFZHw
Forum thread: https://forum.yoyogames.com/index.php?threads/autotiling-tilemap-shaders.3295/
This extension includes two shaders which autotiles and depth sorts your tiles in an instant. There's a collection of 5 scripts which makes it easy to use the extension. Usually you would organize your tiles and create edges and corners etc. on the CPU, but this can be quite slow some times, so this asset focuses on doing these tasks on the GPU which can give you a great performance boost. Shuffling and updating all tiles in the window every step can be done with a steady 60+ frames per second.
Features:
Note: The extension has been developed and tested using the Windows export module. Might work on other platforms as well, but this is not guaranteed.
Remember to read the asset's EULA:
End User Licence Agreement (EULA).