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author Hop311 <hop3114@gmail.com>2023-04-26 00:51:44 +0200
committer Hop311 <hop3114@gmail.com>2023-04-26 00:51:44 +0200
commit563834e7e6f9ce565bbfd553a0d9ff80a98c677d (patch)
treefcf86e6fac31430ba537a0d056e97f901ad76dd7 /game
parent50327abf33078c44fef85c62ce3d90e23056fb34 (diff)
Divide map texture to fit in 16384 GPU dim limit
Diffstat (limited to 'game')
-rw-r--r--game/src/GameSession/MapView.gd12
-rw-r--r--game/src/GameSession/TerrainMap.gdshader23
2 files changed, 17 insertions, 18 deletions
diff --git a/game/src/GameSession/MapView.gd b/game/src/GameSession/MapView.gd
index 510d70a..e74ea59 100644
--- a/game/src/GameSession/MapView.gd
+++ b/game/src/GameSession/MapView.gd
@@ -41,7 +41,6 @@ var _mouse_over_viewport : bool = true
var _map_mesh : MapMesh
var _map_shader_material : ShaderMaterial
var _map_image_size : Vector2
-var _map_province_index_image : Image
var _map_province_colour_image : Image
var _map_province_colour_texture : ImageTexture
var _map_mesh_corner : Vector2
@@ -77,12 +76,15 @@ func _ready():
return
_map_shader_material = map_material
- # Province index texture
- _map_province_index_image = GameSingleton.get_province_index_image()
- if _map_province_index_image == null:
+ # Province index textures
+ var map_province_index_images := GameSingleton.get_province_index_images()
+ if map_province_index_images == null or map_province_index_images.is_empty():
push_error("Failed to get province index image!")
return
- var province_index_texture := ImageTexture.create_from_image(_map_province_index_image)
+ var province_index_texture := Texture2DArray.new()
+ if province_index_texture.create_from_images(map_province_index_images) != OK:
+ push_error("Failed to generate province index texture array!")
+ return
_map_shader_material.set_shader_parameter(_shader_param_province_index, province_index_texture)
# Province colour texture
diff --git a/game/src/GameSession/TerrainMap.gdshader b/game/src/GameSession/TerrainMap.gdshader
index 9ce1a24..305a34b 100644
--- a/game/src/GameSession/TerrainMap.gdshader
+++ b/game/src/GameSession/TerrainMap.gdshader
@@ -5,7 +5,7 @@ render_mode unshaded;
// Cosmetic farmlands terrain texture
uniform sampler2D farmlands_tex: source_color, repeat_enable, filter_linear;
// Province index texture
-uniform sampler2D province_index_tex : source_color, repeat_enable, filter_nearest;
+uniform sampler2DArray province_index_tex : source_color, repeat_enable, filter_nearest;
// Province colour texture
uniform sampler2D province_colour_tex: source_color, repeat_enable, filter_nearest;
// Index of the mouse over the map mesh
@@ -18,23 +18,20 @@ uniform float terrain_tile_factor;
uvec2 vec2_to_uvec2(vec2 v) {
return uvec2(v * 255.0);
}
-
+uvec2 read_uvec2(vec2 uv) {
+ float width_divisions = float(textureSize(province_index_tex, 0).z);
+ uv.x *= width_divisions;
+ float idx = mod(floor(uv.x), width_divisions);
+ return vec2_to_uvec2(texture(province_index_tex, vec3(uv, idx)).rg);
+}
uint uvec2_to_uint(uvec2 v) {
return (v.y << 8u) | v.x;
}
-uvec2 read_uvec2(sampler2D tex, vec2 uv) {
- return vec2_to_uvec2(texture(tex, uv).rg);
-}
-
-uint read_uint16(sampler2D tex, vec2 uv) {
- return uvec2_to_uint(read_uvec2(tex, uv));
-}
-
const vec3 water_colour = vec3(0, 0, 1);
vec3 get_terrain_colour(vec2 uv, vec2 corner, vec2 half_pixel_size, vec2 terrain_uv) {
- uvec2 index_split = read_uvec2(province_index_tex, fma(corner, half_pixel_size, uv));
+ uvec2 index_split = read_uvec2(fma(corner, half_pixel_size, uv));
uint index = uvec2_to_uint(index_split);
vec4 province_data = texelFetch(province_colour_tex, ivec2(index_split), 0);
vec3 province_colour = province_data.rgb;
@@ -47,8 +44,8 @@ vec3 get_terrain_colour(vec2 uv, vec2 corner, vec2 half_pixel_size, vec2 terrain
}
vec3 mix_terrain_colour(vec2 uv) {
- vec2 map_size = vec2(textureSize(province_index_tex, 0));
- vec2 pixel_offset = mod(fma(uv, map_size, vec2(0.5)), 1.0);
+ vec2 map_size = vec2(textureSize(province_index_tex, 0).xy);
+ vec2 pixel_offset = fract(fma(uv, map_size, vec2(0.5)));
vec2 half_pixel_size = 0.49 / map_size;
vec2 terrain_uv = uv;