Directional Lights

Directional lights affect the entire view and come from light source far away (for example the sun).

You can enable directional lighting with

glr_enable_directional(true);

And set the quality with

glr_set_directional_quality(1); // value in [0, 1] range

Mesh Height

When you have multiple meshes you may want that lower objects don't cast shadows on higher ones

glr_mesh_set_height(mesh_id, height);

For example in a topdown game, a wall object with height = 800 will cast shadows on every object with height < 800 and don't receive shadows from them.

//create a mesh

mesh_id = glr_mesh_create(x,y, true);

//add a submesh (real vertices)

glr_mesh_submesh_add_box_from_sprite(mesh_id, sprite_index, 0, 0);

//finalize the mesh to make it renderable

glr_mesh_update(mesh_id);

glr_mesh_set_height(mesh_id, 800);

glr_mesh_set_depth(mesh_id, 500);