Tile Map
A tile map shader emulating array uniform functionality that enables “constant” performance scaling regardless of tilemap size.
Shader code
shader_type canvas_item;
uniform float txr_width;
uniform float txr_height;
uniform float tile_width;
uniform float tile_height;
uniform float tile_count;
void fragment() {
vec2 txr_size = vec2(txr_width, txr_height);
COLOR = texture(TEXTURE,
(mod(UV * txr_size, 1) * tile_width // offset
+ vec2(floor(texture(TEXTURE, UV).r * tile_count) * tile_width., txr_height - tile_height) // map
/ txr_size // normalize
);
}
