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game: water shader experiments

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Torjus Håkestad
2025-08-19 06:26:50 +02:00
parent 0268789c54
commit c12ca7ba31
9 changed files with 228 additions and 1 deletions
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91
assets/shaders/vis_water.tres Normal file
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[gd_resource type="VisualShader" load_steps=9 format=3 uid="uid://fcm46siaht3c"]
[ext_resource type="Texture2D" uid="uid://cqjhrbw36g1hf" path="res://assets/sprites/3xwater.png" id="1_s0q3e"]
[sub_resource type="VisualShaderNodeTexture" id="VisualShaderNodeTexture_wu54b"]
output_port_for_preview = 0
texture = ExtResource("1_s0q3e")
[sub_resource type="VisualShaderNodeInput" id="VisualShaderNodeInput_s0q3e"]
output_port_for_preview = 0
input_name = "uv2"
[sub_resource type="VisualShaderNodeInput" id="VisualShaderNodeInput_wu54b"]
input_name = "uv"
[sub_resource type="VisualShaderNodeTexture" id="VisualShaderNodeTexture_2m85h"]
texture = ExtResource("1_s0q3e")
[sub_resource type="VisualShaderNodeInput" id="VisualShaderNodeInput_nkbt4"]
expanded_output_ports = [0]
input_name = "vertex"
[sub_resource type="VisualShaderNodeVectorOp" id="VisualShaderNodeVectorOp_88kc6"]
default_input_values = [0, Vector2(0, 0), 1, Vector2(50, 50)]
op_type = 0
[sub_resource type="VisualShaderNodeIf" id="VisualShaderNodeIf_kx7fy"]
default_input_values = [0, 0.0, 1, 0.0, 2, 1e-05, 3, Vector3(0, 0, 0), 4, Vector3(0, 0, 0), 5, Vector3(100, 0, 0)]
[resource]
code = "shader_type spatial;
render_mode blend_mix, depth_draw_opaque, cull_back, diffuse_lambert, specular_schlick_ggx;
void vertex() {
// Input:3
vec3 n_out3p0 = VERTEX;
float n_out3p2 = n_out3p0.g;
vec3 n_out5p0;
// If:5
float n_in5p1 = 0.00000;
float n_in5p2 = 0.00001;
vec3 n_in5p3 = vec3(0.00000, 0.00000, 0.00000);
vec3 n_in5p4 = vec3(0.00000, 0.00000, 0.00000);
vec3 n_in5p5 = vec3(100.00000, 0.00000, 0.00000);
if(abs(n_out3p2 - n_in5p1) < n_in5p2)
{
n_out5p0 = n_in5p3;
}
else if(n_out3p2 < n_in5p1)
{
n_out5p0 = n_in5p5;
}
else
{
n_out5p0 = n_in5p4;
}
// VectorOp:4
vec2 n_out4p0 = vec2(n_out3p0.xy) + vec2(n_out5p0.xy);
// Output:0
VERTEX = vec3(n_out4p0, 0.0);
}
"
graph_offset = Vector2(-22.2715, 18.9148)
nodes/vertex/0/position = Vector2(1160, 240)
nodes/vertex/2/node = SubResource("VisualShaderNodeTexture_2m85h")
nodes/vertex/2/position = Vector2(40, 280)
nodes/vertex/3/node = SubResource("VisualShaderNodeInput_nkbt4")
nodes/vertex/3/position = Vector2(300, 140)
nodes/vertex/4/node = SubResource("VisualShaderNodeVectorOp_88kc6")
nodes/vertex/4/position = Vector2(860, 120)
nodes/vertex/5/node = SubResource("VisualShaderNodeIf_kx7fy")
nodes/vertex/5/position = Vector2(640, 340)
nodes/vertex/connections = PackedInt32Array(3, 0, 4, 0, 3, 2, 5, 0, 5, 0, 4, 1, 4, 0, 0, 0)
nodes/fragment/0/position = Vector2(840, 100)
nodes/fragment/2/node = SubResource("VisualShaderNodeTexture_wu54b")
nodes/fragment/2/position = Vector2(260, 180)
nodes/fragment/3/node = SubResource("VisualShaderNodeInput_s0q3e")
nodes/fragment/3/position = Vector2(-140, 200)
nodes/fragment/4/node = SubResource("VisualShaderNodeInput_wu54b")
nodes/fragment/4/position = Vector2(540, 220)

36
assets/shaders/water.gdshader Normal file
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shader_type canvas_item;
// Parameters
uniform sampler2D water_texture; // Your 3x3 water texture
uniform vec4 water_color : source_color = vec4(0.0, 0.0, 1.0, 1.0);
uniform float speed : hint_range(0.0, 10.0) = 1.0;
uniform float strength : hint_range(0.0, 0.2) = 0.05;
uniform float tile_repeat : hint_range(1.0, 10.0) = 3.0;
uniform vec2 pan_speed = vec2(0.2, 0.1); // how fast the water texture moves
void fragment() {
vec2 uv = UV;
// Sample the base tile texture
vec4 base_tex = texture(TEXTURE, uv);
// Compute mask for water pixels only
float is_water = step(0.8, 1.0 - distance(base_tex.rgb, water_color.rgb));
// Tile the water texture
vec2 water_uv = uv * tile_repeat;
water_uv = fract(water_uv);
// Apply panning / movement
water_uv += pan_speed * TIME;
// Add wave distortion on top of the moving texture
water_uv.y += sin(water_uv.x * 2.0 + TIME * speed) * strength * is_water;
water_uv.x += cos(water_uv.y * 2.0 + TIME * speed * 0.5) * strength * is_water;
// Sample the animated water texture
vec4 water_sample = texture(water_texture, water_uv);
// Combine: water animates, other pixels stay the same
COLOR = mix(base_tex, water_sample, is_water);
}

1
assets/shaders/water.gdshader.uid Normal file
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@@ -0,0 +1 @@
uid://dxlfb81ouff0w

27
assets/shaders/water2.gdshader Normal file
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@@ -0,0 +1,27 @@
shader_type canvas_item;
uniform vec4 water_color : source_color = vec4(0.0, 0.0, 1.0, 1.0);
uniform sampler2D noise_tex; // noise texture
uniform vec2 noise_speed = vec2(0.05, 0.01);
uniform float noise_strength = 0.2; // how much to lighten/darken
void fragment() {
vec2 uv = UV;
vec4 base_tex = texture(TEXTURE, uv);
float is_water = step(0.8, 1.0 - distance(base_tex.rgb, water_color.rgb));
// Scroll UVs for noise animation
vec2 noise_uv = SCREEN_UV + noise_speed * TIME;
vec4 noise_sample = texture(noise_tex, fract(noise_uv));
// Use noise (0..1) to brighten/darken the water color
float brightness = (noise_sample.r - 0.5) * 2.0 * noise_strength;
vec4 animated_water = water_color + vec4(vec3(brightness), 0.0);
COLOR = mix(base_tex, animated_water, is_water);
}
//void light() {
// // Called for every pixel for every light affecting the material.
// // Uncomment to replace the default light processing function with this one.
//}

1
assets/shaders/water2.gdshader.uid Normal file
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@@ -0,0 +1 @@
uid://clpp23h7fpamt

BIN
assets/sprites/3xwater.png (Stored with Git LFS) Normal file
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Binary file not shown.

35
assets/sprites/3xwater.png.import Normal file
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@@ -0,0 +1,35 @@
[remap]
importer="texture"
type="CompressedTexture2D"
uid="uid://cqjhrbw36g1hf"
path.s3tc="res://.godot/imported/3xwater.png-bfe2954a002ead9d6959c0ddfb1ffb13.s3tc.ctex"
metadata={
"imported_formats": ["s3tc_bptc"],
"vram_texture": true
}
[deps]
source_file="res://assets/sprites/3xwater.png"
dest_files=["res://.godot/imported/3xwater.png-bfe2954a002ead9d6959c0ddfb1ffb13.s3tc.ctex"]
[params]
compress/mode=2
compress/high_quality=false
compress/lossy_quality=0.7
compress/hdr_compression=1
compress/normal_map=0
compress/channel_pack=0
mipmaps/generate=true
mipmaps/limit=-1
roughness/mode=0
roughness/src_normal=""
process/fix_alpha_border=true
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

3
assets/sprites/water_texture.tres Normal file
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@@ -0,0 +1,3 @@
[gd_resource type="ImageTexture" format=3 uid="uid://de02afow3ilxd"]
[resource]

32
scenes/tiles/tileset.tres
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@@ -1,10 +1,31 @@
[gd_resource type="TileSet" load_steps=4 format=3 uid="uid://c3clgitssvdlg"]
[gd_resource type="TileSet" load_steps=8 format=3 uid="uid://c3clgitssvdlg"]
[ext_resource type="Texture2D" uid="uid://2xgqhe7u6lfq" path="res://assets/sprites/roguelikeSheet_transparent.png" id="1_kkifh"]
[ext_resource type="Shader" uid="uid://clpp23h7fpamt" path="res://assets/shaders/water2.gdshader" id="1_n3s2j"]
[sub_resource type="TileMapPattern" id="TileMapPattern_beh8d"]
tile_data = PackedInt32Array(0, 655360, 7, 65536, 655360, 8, 131072, 655360, 9, 1, 720896, 7, 65537, 720896, 8, 131073, 720896, 9, 2, 786432, 7, 65538, 786432, 8, 131074, 786432, 9)
[sub_resource type="FastNoiseLite" id="FastNoiseLite_n3s2j"]
seed = 3
frequency = 0.0066
fractal_type = 2
fractal_gain = 0.435
fractal_weighted_strength = 1.0
[sub_resource type="NoiseTexture2D" id="NoiseTexture2D_m3ddo"]
width = 2048
height = 2048
seamless = true
noise = SubResource("FastNoiseLite_n3s2j")
[sub_resource type="ShaderMaterial" id="ShaderMaterial_n3s2j"]
shader = ExtResource("1_n3s2j")
shader_parameter/water_color = Color(0.388235, 0.772549, 0.811765, 1)
shader_parameter/noise_tex = SubResource("NoiseTexture2D_m3ddo")
shader_parameter/noise_speed = Vector2(0.03, 0.01)
shader_parameter/noise_strength = 0.05
[sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_s7nh2"]
texture = ExtResource("1_kkifh")
separation = Vector2i(1, 1)
@@ -13,6 +34,7 @@ separation = Vector2i(1, 1)
1:0/0 = 0
1:0/0/terrain_set = 0
2:0/0 = 0
2:0/0/material = SubResource("ShaderMaterial_n3s2j")
2:0/0/terrain_set = 0
2:0/0/terrain = 1
2:0/0/physics_layer_0/polygon_0/points = PackedVector2Array(8, -6.02527, 8, 8, -5.84541, 8, -3.95689, -2.96767)
@@ -25,6 +47,7 @@ separation = Vector2i(1, 1)
2:0/0/terrains_peering_bit/top_side = 0
2:0/0/terrains_peering_bit/top_right_corner = 0
3:0/0 = 0
3:0/0/material = SubResource("ShaderMaterial_n3s2j")
3:0/0/terrain_set = 0
3:0/0/terrain = 1
3:0/0/physics_layer_0/polygon_0/points = PackedVector2Array(8, 8, -8, 8, -8, -5.84541, 8, -5.75548)
@@ -37,6 +60,7 @@ separation = Vector2i(1, 1)
3:0/0/terrains_peering_bit/top_side = 0
3:0/0/terrains_peering_bit/top_right_corner = 0
4:0/0 = 0
4:0/0/material = SubResource("ShaderMaterial_n3s2j")
4:0/0/terrain_set = 0
4:0/0/terrain = 1
4:0/0/physics_layer_0/polygon_0/points = PackedVector2Array(6.02527, 8, -8, 8, -8, -5.84541, 2.96767, -3.95689)
@@ -124,6 +148,7 @@ separation = Vector2i(1, 1)
1:1/0/terrains_peering_bit/top_side = 1
1:1/0/terrains_peering_bit/top_right_corner = 1
2:1/0 = 0
2:1/0/material = SubResource("ShaderMaterial_n3s2j")
2:1/0/terrain_set = 0
2:1/0/terrain = 1
2:1/0/physics_layer_0/polygon_0/points = PackedVector2Array(8, -8, 8, 8, -5.84541, 8, -5.75548, -8)
@@ -136,6 +161,7 @@ separation = Vector2i(1, 1)
2:1/0/terrains_peering_bit/top_side = 1
2:1/0/terrains_peering_bit/top_right_corner = 1
3:1/0 = 0
3:1/0/material = SubResource("ShaderMaterial_n3s2j")
3:1/0/terrain_set = 0
3:1/0/terrain = 1
3:1/0/physics_layer_0/polygon_0/points = PackedVector2Array(-8, 8, -8, -8, 8, -8, 8, 8)
@@ -148,6 +174,7 @@ separation = Vector2i(1, 1)
3:1/0/terrains_peering_bit/top_side = 1
3:1/0/terrains_peering_bit/top_right_corner = 1
4:1/0 = 0
4:1/0/material = SubResource("ShaderMaterial_n3s2j")
4:1/0/terrain_set = 0
4:1/0/terrain = 1
4:1/0/physics_layer_0/polygon_0/points = PackedVector2Array(-8, 8, -8, -8, 5.84541, -8, 5.75548, 8)
@@ -245,6 +272,7 @@ separation = Vector2i(1, 1)
1:2/0/terrains_peering_bit/top_side = 1
1:2/0/terrains_peering_bit/top_right_corner = 1
2:2/0 = 0
2:2/0/material = SubResource("ShaderMaterial_n3s2j")
2:2/0/terrain_set = 0
2:2/0/terrain = 1
2:2/0/physics_layer_0/polygon_0/points = PackedVector2Array(-6.02527, -8, 8, -8, 8, 5.84541, -2.96767, 3.95689)
@@ -257,6 +285,7 @@ separation = Vector2i(1, 1)
2:2/0/terrains_peering_bit/top_side = 1
2:2/0/terrains_peering_bit/top_right_corner = 1
3:2/0 = 0
3:2/0/material = SubResource("ShaderMaterial_n3s2j")
3:2/0/terrain_set = 0
3:2/0/terrain = 1
3:2/0/physics_layer_0/polygon_0/points = PackedVector2Array(-8, -8, 8, -8, 8, 5.84541, -8, 5.75548)
@@ -269,6 +298,7 @@ separation = Vector2i(1, 1)
3:2/0/terrains_peering_bit/top_side = 1
3:2/0/terrains_peering_bit/top_right_corner = 1
4:2/0 = 0
4:2/0/material = SubResource("ShaderMaterial_n3s2j")
4:2/0/terrain_set = 0
4:2/0/terrain = 1
4:2/0/physics_layer_0/polygon_0/points = PackedVector2Array(-8, 6.02527, -8, -8, 5.84541, -8, 3.95689, 2.96767)