The app would track where the user would walk through, and look towards, inside the augmented reality space. Then generates dirt, grass and moss dynamically in a maximum radius of ~15 meters around the starting point.

Using a custom shader, the app draws a 5% opacity gradient dot of a few pixels in diameter per rendered frame, at the current position of the user mapped onto the ground into a 1024 x 1024 pixel texture buffer. Using slightly different diameters per color channel to draw the gradient dot, we create and overlapping effect where each channel can be used as a mask for a different texture layer.

Using each color channel (RGB) from the low resolution texture buffer for the dirt, grass, and moss layer mask, in combination with the detailed height map texture data for each layer, we can create a smooth and natural looking transition between the different ground textures.