Merge pull request #103 from OpenVic2Project/terrain

Cosmetic terrain + Hashmaps

22 files changed, 220 insertions, 33 deletions

diff --git a/game/art/terrain/desert_rocky.png b/game/art/terrain/desert_rocky.png
new file mode 100644
index 0000000..f7f9155
--- /dev/null
+++ b/game/art/terrain/desert_rocky.png
diff --git a/game/art/terrain/desert_rocky.png.import b/game/art/terrain/desert_rocky.png.import
new file mode 100644
index 0000000..b8104eb
--- /dev/null
+++ b/game/art/terrain/desert_rocky.png.import
@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://do6rtj6cejxo7"
+path="res://.godot/imported/desert_rocky.png-2c26845e144e1e8b9c55419654df6654.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://art/terrain/desert_rocky.png"
+dest_files=["res://.godot/imported/desert_rocky.png-2c26845e144e1e8b9c55419654df6654.ctex"]
+
+[params]
+
+compress/mode=3
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=2
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=false
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=0
diff --git a/game/art/terrain/desert_smooth.png b/game/art/terrain/desert_smooth.png
new file mode 100644
index 0000000..4e977cd
--- /dev/null
+++ b/game/art/terrain/desert_smooth.png
diff --git a/game/art/terrain/desert_smooth.png.import b/game/art/terrain/desert_smooth.png.import
new file mode 100644
index 0000000..bc0513d
--- /dev/null
+++ b/game/art/terrain/desert_smooth.png.import
@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://beo5i11jfu3al"
+path="res://.godot/imported/desert_smooth.png-58a5349b112e9e97cf3426b380f022ef.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://art/terrain/desert_smooth.png"
+dest_files=["res://.godot/imported/desert_smooth.png-58a5349b112e9e97cf3426b380f022ef.ctex"]
+
+[params]
+
+compress/mode=3
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=2
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=false
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=0
diff --git a/game/art/terrain/mountains.png b/game/art/terrain/mountains.png
new file mode 100644
index 0000000..301ee23
--- /dev/null
+++ b/game/art/terrain/mountains.png
diff --git a/game/art/terrain/mountains.png.import b/game/art/terrain/mountains.png.import
new file mode 100644
index 0000000..47a00fd
--- /dev/null
+++ b/game/art/terrain/mountains.png.import
@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://c20q2sqf38eq8"
+path="res://.godot/imported/mountains.png-f1ab7d9b0a0deb485923c40b1cfb258e.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://art/terrain/mountains.png"
+dest_files=["res://.godot/imported/mountains.png-f1ab7d9b0a0deb485923c40b1cfb258e.ctex"]
+
+[params]
+
+compress/mode=3
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=2
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=false
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=0
diff --git a/game/art/terrain/ocean.png b/game/art/terrain/ocean.png
new file mode 100644
index 0000000..3e52011
--- /dev/null
+++ b/game/art/terrain/ocean.png
diff --git a/game/art/terrain/ocean.png.import b/game/art/terrain/ocean.png.import
new file mode 100644
index 0000000..644f7e7
--- /dev/null
+++ b/game/art/terrain/ocean.png.import
@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://dlvvim3j7dbnn"
+path="res://.godot/imported/ocean.png-3d7e213c3fca805d033e0d3bf567fc01.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://art/terrain/ocean.png"
+dest_files=["res://.godot/imported/ocean.png-3d7e213c3fca805d033e0d3bf567fc01.ctex"]
+
+[params]
+
+compress/mode=3
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=2
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=false
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=0
diff --git a/game/common/map/terrain.json b/game/common/map/terrain.json
new file mode 100644
index 0000000..60596c9
--- /dev/null
+++ b/game/common/map/terrain.json
@@ -0,0 +1,7 @@
+{
+	"ocean.png": "204080",
+	"farmlands.png": [88, 170, 37],
+	"mountains.png": "584B25",
+	"desert_rocky.png": "A06C38",
+	"desert_smooth.png": "BAA644"
+}
diff --git a/game/common/map/terrain.png b/game/common/map/terrain.png
new file mode 100644
index 0000000..6e7ca0a
--- /dev/null
+++ b/game/common/map/terrain.png
diff --git a/game/common/map/terrain.png.import b/game/common/map/terrain.png.import
new file mode 100644
index 0000000..8dd0c09
--- /dev/null
+++ b/game/common/map/terrain.png.import
@@ -0,0 +1,3 @@
+[remap]
+
+importer="keep"
diff --git a/game/src/Autoload/Events.gd b/game/src/Autoload/Events.gd
index f94d338..47c3b88 100644
--- a/game/src/Autoload/Events.gd
+++ b/game/src/Autoload/Events.gd
@@ -8,7 +8,9 @@ var ShaderManager = preload("Events/ShaderManager.gd").new()
 const _province_identifier_file : String = "res://common/map/provinces.json"
 const _water_province_file : String = "res://common/map/water.json"
 const _region_file : String = "res://common/map/regions.json"
-const _province_shape_file : String = "res://common/map/provinces.png"
+const _terrain_file : String = "res://common/map/terrain.json"
+const _province_image_file : String = "res://common/map/provinces.png"
+const _terrain_image_file : String = "res://common/map/terrain.png"
 
 # REQUIREMENTS
 # * FS-333, FS-334, FS-335, FS-341
@@ -19,5 +21,7 @@ func _ready():
 		push_error("Failed to load water provinces")
 	if GameSingleton.load_region_file(_region_file) != OK:
 		push_error("Failed to load regions")
-	if GameSingleton.load_province_shape_file(_province_shape_file) != OK:
-		push_error("Failed to load province shapes")
+	if GameSingleton.load_terrain_file(_terrain_file) != OK:
+		push_error("Failed to load terrain variants")
+	if GameSingleton.load_map_images(_province_image_file, _terrain_image_file) != OK:
+		push_error("Failed to load map images")
diff --git a/game/src/Autoload/Events/ShaderManager.gd b/game/src/Autoload/Events/ShaderManager.gd
index 96ed5b4..a503c52 100644
--- a/game/src/Autoload/Events/ShaderManager.gd
+++ b/game/src/Autoload/Events/ShaderManager.gd
@@ -1,13 +1,14 @@
 extends RefCounted
 
-const param_province_shape : StringName = &"province_shape_tex"
+const param_province_shape_tex : StringName = &"province_shape_tex"
 const param_province_shape_subdivisions : StringName = &"province_shape_subdivisions"
-const param_province_colour : StringName = &"province_colour_tex"
+const param_province_colour_tex : StringName = &"province_colour_tex"
 const param_hover_index : StringName = &"hover_index"
 const param_selected_index : StringName = &"selected_index"
+const param_terrain_tex : StringName = &"terrain_tex"
 const param_terrain_tile_factor : StringName = &"terrain_tile_factor"
 
-func set_up_shader(material : Material, add_colour_texture : bool) -> Error:
+func set_up_shader(material : Material, add_cosmetic_textures : bool) -> Error:
 	# Shader Material
 	if material == null:
 		push_error("material is null!")
@@ -22,19 +23,26 @@ func set_up_shader(material : Material, add_colour_texture : bool) -> Error:
 	if province_shape_texture == null:
 		push_error("Failed to get province shape texture!")
 		return FAILED
-	shader_material.set_shader_parameter(param_province_shape, province_shape_texture)
+	shader_material.set_shader_parameter(param_province_shape_tex, province_shape_texture)
 	var subdivisions := GameSingleton.get_province_shape_image_subdivisions()
 	if subdivisions.x < 1 or subdivisions.y < 1:
 		push_error("Invalid province shape image subdivision: ", subdivisions.x, "x", subdivisions.y)
 		return FAILED
 	shader_material.set_shader_parameter(param_province_shape_subdivisions, Vector2(subdivisions))
 
-	if add_colour_texture:
+	if add_cosmetic_textures:
 		# Province colour texture
 		var map_province_colour_texture := GameSingleton.get_province_colour_texture()
 		if map_province_colour_texture == null:
 			push_error("Failed to get province colour image!")
 			return FAILED
-		shader_material.set_shader_parameter(param_province_colour, map_province_colour_texture)
+		shader_material.set_shader_parameter(param_province_colour_tex, map_province_colour_texture)
+
+		# Terrain texture
+		var terrain_texture := GameSingleton.get_terrain_texture()
+		if terrain_texture == null:
+			push_error("Failed to get terrain texture!")
+			return FAILED
+		shader_material.set_shader_parameter(param_terrain_tex, terrain_texture)
 
 	return OK
diff --git a/game/src/GameSession/GameSession.tscn b/game/src/GameSession/GameSession.tscn
index 98b43dd..70f0583 100644
--- a/game/src/GameSession/GameSession.tscn
+++ b/game/src/GameSession/GameSession.tscn
@@ -66,6 +66,7 @@ offset_right = 0.0
 grow_horizontal = 0
 
 [connection signal="map_view_camera_changed" from="MapView" to="MapControlPanel" method="_on_map_view_camera_changed"]
+[connection signal="province_selected" from="MapView" to="MapControlPanel" method="_on_province_selected"]
 [connection signal="province_selected" from="MapView" to="ProvinceOverviewPanel" method="_on_province_selected"]
 [connection signal="options_button_pressed" from="GameSessionMenu" to="OptionsMenu" method="show"]
 [connection signal="game_session_menu_button_pressed" from="MapControlPanel" to="." method="_on_game_session_menu_button_pressed"]
@@ -74,5 +75,6 @@ grow_horizontal = 0
 [connection signal="mouse_exited" from="MapControlPanel" to="MapView" method="_on_mouse_entered_viewport"]
 [connection signal="zoom_in_button_pressed" from="MapControlPanel" to="MapView" method="zoom_in"]
 [connection signal="zoom_out_button_pressed" from="MapControlPanel" to="MapView" method="zoom_out"]
+[connection signal="province_deselected" from="ProvinceOverviewPanel" to="MapView" method="_deselect_province"]
 [connection signal="back_button_pressed" from="OptionsMenu" to="MapView" method="enable_processing"]
 [connection signal="back_button_pressed" from="OptionsMenu" to="OptionsMenu" method="hide"]
diff --git a/game/src/GameSession/MapControlPanel.gd b/game/src/GameSession/MapControlPanel.gd
index 508f692..e9249b3 100644
--- a/game/src/GameSession/MapControlPanel.gd
+++ b/game/src/GameSession/MapControlPanel.gd
@@ -3,6 +3,7 @@ extends PanelContainer
 signal game_session_menu_button_pressed
 signal map_view_camera_changed(near_left : Vector2, far_left : Vector2, far_right : Vector2, near_right : Vector2)
 signal minimap_clicked(pos_clicked : Vector2)
+signal province_selcted(index : int)
 signal zoom_in_button_pressed
 signal zoom_out_button_pressed
 
@@ -47,6 +48,9 @@ func _on_map_view_camera_changed(near_left : Vector2, far_left : Vector2, far_ri
 func _on_minimap_clicked(pos_clicked : Vector2) -> void:
 	minimap_clicked.emit(pos_clicked)
 
+func _on_province_selected(index : int) -> void:
+	province_selcted.emit(index)
+
 # REQUIREMENTS:
 # * UIFUN-269
 func _on_zoom_in_button_pressed() -> void:
diff --git a/game/src/GameSession/MapControlPanel.tscn b/game/src/GameSession/MapControlPanel.tscn
index ae4c3dc..82b9c86 100644
--- a/game/src/GameSession/MapControlPanel.tscn
+++ b/game/src/GameSession/MapControlPanel.tscn
@@ -7,6 +7,7 @@
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_bhuqb"]
 shader = ExtResource("2_rinsg")
 shader_parameter/province_shape_subdivisions = null
+shader_parameter/selected_index = null
 
 [sub_resource type="InputEventAction" id="InputEventAction_5nck3"]
 action = &"ui_cancel"
@@ -56,7 +57,7 @@ color = Color(0.921569, 0.835294, 0.701961, 1)
 
 [node name="ViewportQuad" type="Control" parent="MapPanelMargin/MapPanelList/MapDisplayList/Minimap" node_paths=PackedStringArray("_minimap_texture")]
 layout_mode = 2
-mouse_filter = 2
+mouse_filter = 1
 script = ExtResource("3_s4dml")
 _minimap_texture = NodePath("../MinimapTexture")
 
@@ -100,6 +101,7 @@ mouse_filter = 1
 text = "-"
 
 [connection signal="map_view_camera_changed" from="." to="MapPanelMargin/MapPanelList/MapDisplayList/Minimap/ViewportQuad" method="_on_map_view_camera_changed"]
+[connection signal="province_selcted" from="." to="MapPanelMargin/MapPanelList/MapDisplayList/Minimap/ViewportQuad" method="_on_province_selected"]
 [connection signal="minimap_clicked" from="MapPanelMargin/MapPanelList/MapDisplayList/Minimap/ViewportQuad" to="." method="_on_minimap_clicked"]
 [connection signal="pressed" from="MapPanelMargin/MapPanelList/AuxiliaryPanel/GameSessionMenuButton" to="." method="_on_game_session_menu_button_pressed"]
 [connection signal="pressed" from="MapPanelMargin/MapPanelList/AuxiliaryPanel/ZoomButtonsContainer/ZoomInButton" to="." method="_on_zoom_in_button_pressed"]
diff --git a/game/src/GameSession/MapView.gd b/game/src/GameSession/MapView.gd
index 340083f..e2c8519 100644
--- a/game/src/GameSession/MapView.gd
+++ b/game/src/GameSession/MapView.gd
@@ -71,7 +71,8 @@ func _ready():
 
 	# Set map mesh size and get bounds
 	_map_mesh.aspect_ratio = GameSingleton.get_aspect_ratio()
-	_map_shader_material.set_shader_parameter(Events.ShaderManager.param_terrain_tile_factor, float(GameSingleton.get_height()) / 64.0)
+	_map_shader_material.set_shader_parameter(Events.ShaderManager.param_terrain_tile_factor,
+		float(GameSingleton.get_height()) / 128.0)
 	var map_mesh_aabb := _map_mesh.get_core_aabb() * _map_mesh_instance.transform
 	_map_mesh_corner = Vector2(
 		min(map_mesh_aabb.position.x, map_mesh_aabb.end.x),
@@ -111,15 +112,20 @@ func zoom_in() -> void:
 func zoom_out() -> void:
 	_zoom_target += _zoom_target_step
 
+func _select_province(index : int) -> void:
+	_map_shader_material.set_shader_parameter(Events.ShaderManager.param_selected_index, index)
+	province_selected.emit(index)
+
+func _deselect_province() -> void:
+	_select_province(0)
+
 # REQUIREMENTS
 # * SS-31
 func _unhandled_input(event : InputEvent):
 	if _mouse_over_viewport and event.is_action_pressed(_action_click):
 		# Check if the mouse is outside of bounds
 		if _map_mesh.is_valid_uv_coord(_mouse_pos_map):
-			var selected_index := GameSingleton.get_province_index_from_uv_coords(_mouse_pos_map)
-			_map_shader_material.set_shader_parameter(Events.ShaderManager.param_selected_index, selected_index)
-			province_selected.emit(selected_index)
+			_select_province(GameSingleton.get_province_index_from_uv_coords(_mouse_pos_map))
 		else:
 			print("Clicked outside the map!")
 	elif event.is_action_pressed(_action_drag):
@@ -222,6 +228,7 @@ func _on_mouse_entered_viewport():
 
 func _on_mouse_exited_viewport():
 	_mouse_over_viewport = false
+	_map_shader_material.set_shader_parameter(Events.ShaderManager.param_hover_index, 0)
 
 func _on_minimap_clicked(pos_clicked : Vector2):
 	pos_clicked *= _map_mesh_dims
diff --git a/game/src/GameSession/MapView.tscn b/game/src/GameSession/MapView.tscn
index efbad4e..fa6ffcd 100644
--- a/game/src/GameSession/MapView.tscn
+++ b/game/src/GameSession/MapView.tscn
@@ -1,17 +1,15 @@
-[gd_scene load_steps=6 format=3 uid="uid://dkehmdnuxih2r"]
+[gd_scene load_steps=5 format=3 uid="uid://dkehmdnuxih2r"]
 
 [ext_resource type="Script" path="res://src/GameSession/MapView.gd" id="1_exccw"]
 [ext_resource type="Shader" path="res://src/GameSession/TerrainMap.gdshader" id="1_upocn"]
-[ext_resource type="Texture2D" uid="uid://ckf222w5usrsu" path="res://art/terrain/farmlands.png" id="3_47mq1"]
 
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_tayeg"]
 render_priority = 0
 shader = ExtResource("1_upocn")
-shader_parameter/province_index_subdivisions = null
+shader_parameter/province_shape_subdivisions = null
 shader_parameter/hover_index = null
 shader_parameter/selected_index = null
 shader_parameter/terrain_tile_factor = null
-shader_parameter/farmlands_tex = ExtResource("3_47mq1")
 
 [sub_resource type="MapMesh" id="MapMesh_3gtsd"]
 
diff --git a/game/src/GameSession/Minimap.gd b/game/src/GameSession/Minimap.gd
index 05c662b..f5d972a 100644
--- a/game/src/GameSession/Minimap.gd
+++ b/game/src/GameSession/Minimap.gd
@@ -5,13 +5,21 @@ signal minimap_clicked(pos_clicked : Vector2)
 const _action_click : StringName = &"map_click"
 
 @export var _minimap_texture : Control
+var _minimap_shader : ShaderMaterial
 
 var _viewport_points : PackedVector2Array
 
 func _ready():
 	_minimap_texture.custom_minimum_size = Vector2(GameSingleton.get_aspect_ratio(), 1.0) * 150
-	if Events.ShaderManager.set_up_shader(_minimap_texture.get_material(), false) != OK:
+	var minimap_material := _minimap_texture.get_material()
+	if Events.ShaderManager.set_up_shader(minimap_material, false) != OK:
 		push_error("Failed to set up minimap shader")
+	else:
+		_minimap_shader = minimap_material
+
+func _on_province_selected(index : int) -> void:
+	if _minimap_shader != null:
+		_minimap_shader.set_shader_parameter(Events.ShaderManager.param_selected_index, index)
 
 # REQUIREMENTS
 # * SS-80
diff --git a/game/src/GameSession/Minimap.gdshader b/game/src/GameSession/Minimap.gdshader
index 9afd470..8b68108 100644
--- a/game/src/GameSession/Minimap.gdshader
+++ b/game/src/GameSession/Minimap.gdshader
@@ -2,6 +2,17 @@ shader_type canvas_item;
 
 #include "ProvinceIndexSampler.gdshaderinc"
 
+// Index of the currently selected province
+uniform uint selected_index;
+
+const vec3 land_colour = vec3(0.5);
+const vec3 selected_colour = vec3(1.0, 1.0, 0.0);
+
 void fragment() {
-	COLOR.rgb = mix(COLOR.rgb, vec3(0.5), float(read_uvec3(UV).b != 0u));
+	uvec3 data = read_uvec3(UV);
+	uint index = uvec2_to_uint(data.rg);
+	float is_land = float(data.b != 0u);
+	float is_selected = float(index == selected_index);
+	COLOR.rgb = mix(COLOR.rgb, land_colour, is_land);
+	COLOR.rgb = mix(COLOR.rgb, selected_colour, is_selected);
 }
diff --git a/game/src/GameSession/ProvinceOverviewPanel.gd b/game/src/GameSession/ProvinceOverviewPanel.gd
index 17da9d0..5a914f7 100644
--- a/game/src/GameSession/ProvinceOverviewPanel.gd
+++ b/game/src/GameSession/ProvinceOverviewPanel.gd
@@ -1,5 +1,7 @@
 extends PanelContainer
 
+signal province_deselected
+
 @export var _province_name_label : Label
 @export var _region_name_label : Label
 @export var _life_rating_bar : ProgressBar
@@ -92,4 +94,4 @@ func _on_province_selected(index : int) -> void:
 	_selected_index = index
 
 func _on_close_button_pressed() -> void:
-	_selected_index = 0
+	province_deselected.emit()
diff --git a/game/src/GameSession/TerrainMap.gdshader b/game/src/GameSession/TerrainMap.gdshader
index 05928f3..cab757b 100644
--- a/game/src/GameSession/TerrainMap.gdshader
+++ b/game/src/GameSession/TerrainMap.gdshader
@@ -10,27 +10,22 @@ uniform sampler2D province_colour_tex: source_color, repeat_enable, filter_neare
 uniform uint hover_index;
 // Index of the currently selected province
 uniform uint selected_index;
-// Cosmetic farmlands terrain texture
-uniform sampler2D farmlands_tex: source_color, repeat_enable, filter_linear;
+// Cosmetic terrain textures
+uniform sampler2DArray terrain_tex: source_color, repeat_enable, filter_linear;
 // The number of times the terrain textures should tile vertically
 uniform float terrain_tile_factor;
 
-const vec3 water_colour = vec3(0, 0, 1);
-
 vec3 get_terrain_colour(vec2 uv, vec2 corner, vec2 half_pixel_size, vec2 terrain_uv) {
 	uvec3 province_data = read_uvec3(fma(corner, half_pixel_size, uv));
+	vec4 province_colour = texelFetch(province_colour_tex, ivec2(province_data.rg), 0);
+	vec3 terrain_colour = texture(terrain_tex, vec3(terrain_uv, float(province_data.b))).rgb;
 	uint index = uvec2_to_uint(province_data.rg);
-	float is_land = float(province_data.b != 0u);
-	vec3 province_colour = texelFetch(province_colour_tex, ivec2(province_data.rg), 0).rgb;
-	vec3 farmlands_colour = texture(farmlands_tex, terrain_uv).rgb;
-	vec3 terrain_colour = mix(water_colour, farmlands_colour, is_land);
-	float mix_val = 0.4 + float(index == hover_index) * 0.2 + float(index == selected_index) * 0.2;
-	vec3 mixed_colour = mix(terrain_colour, province_colour, mix_val);
-	return mixed_colour;
+	float mix_val = province_colour.a + float(index == hover_index) * 0.2 + float(index == selected_index) * 0.2;
+	return mix(terrain_colour, province_colour.rgb, mix_val);
 }
 
 vec3 mix_terrain_colour(vec2 uv) {
-	vec2 map_size = vec2(textureSize(province_shape_tex, 0).xy);
+	vec2 map_size = vec2(textureSize(province_shape_tex, 0).xy) * province_shape_subdivisions;
 	vec2 pixel_offset = fract(fma(uv, map_size, vec2(0.5)));
 	vec2 half_pixel_size = 0.49 / map_size;