temp: shaders ...

notes/shaders/base.md

@@ -0,0 +1,28 @@
+# Read texture from image
+
+```glsl
+uniform sampler2D TEXTURE;
+
+void freagment() {
+    vec4 my_texture = texture(TEXTURE, UV);
+
+    ALBEDO = my_texture.rgb;
+}
+```
+
+## Retain color in a next pass shader
+
+```glsl
+uniform sampler2D screen_texture : hint_screen_texture, repeat_disable, filter_nearest;
+
+void freagment() {
+    vec4 currentColor = textureLod(screen_texture, SCREEN_UV, 0.0);
+    ALBEDO = currentColor.rgb;
+}
+
+```
+
+## Smoothstep
+
+https://godotshaders.com/snippet/interpolation/
+https://thebookofshaders.com/glossary/?search=Smoothstep

src/components/controls/MenuControls.gd

@@ -48,7 +48,7 @@ func call_menu_action():
             controlledNode,
             {
                 items = LevelPatterns.get_menu_levels(
-                    clampi(G.settings.MAX_LEVEL, 0, LevelPatterns.levels.size - 1)
+                    clampi(G.settings.MAX_LEVEL, 0, LevelPatterns.levels.size() - 1)
                 )
             }
         )

src/models/icosahedron/Icosahedron.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=19 format=3 uid="uid://c28nbcejwepp8"]
+[gd_scene load_steps=20 format=3 uid="uid://c28nbcejwepp8"]
 
 [ext_resource type="ArrayMesh" uid="uid://dh3qpoqqgdct5" path="res://src/models/icosahedron/assets/icosahedron_Solid.res" id="1_kd7xu"]
 [ext_resource type="Script" path="res://src/models/icosahedron/components/Icosahedron.gd" id="1_w7qn7"]
@@ -11,6 +11,7 @@
 [ext_resource type="Shader" path="res://src/models/icosahedron/shaders/outline_v1.gdshader" id="5_ucsrc1"]
 [ext_resource type="Texture2D" uid="uid://bpr01fnnfusau" path="res://src/models/icosahedron/resources/edge_noise.res" id="6_ai0t7"]
 [ext_resource type="Script" path="res://src/models/icosahedron/components/Collider.gd" id="7_6oydw"]
+[ext_resource type="Texture2D" uid="uid://cixi1rd0a28e4" path="res://assets/build/textures/texture-test-v1.png" id="8_h5ail"]
 
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_rdyh1"]
 render_priority = 0
@@ -34,9 +35,9 @@ shader_parameter/noise_pattern = ExtResource("6_ai0t7")
 render_priority = 2
 next_pass = SubResource("ShaderMaterial_4yeiy")
 shader = ExtResource("5_ucsrc1")
-shader_parameter/enable = true
-shader_parameter/outline_thickness = 0.05
-shader_parameter/color = Color(0.358796, 0.73469, 0.907072, 1)
+shader_parameter/enable = false
+shader_parameter/outline_thickness = 0.11
+shader_parameter/color = Color(0, 1, 0, 1)
 
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_c0lt3"]
 render_priority = 1
@@ -46,6 +47,14 @@ shader_parameter/cutplane = Vector4(-0.577, -0.577, 0.577, 0.794)
 shader_parameter/color = Color(0, 1, 0, 1)
 shader_parameter/enable = true
 shader_parameter/outline_thickness = 0.0
+shader_parameter/uv_offset_x = 0.17
+shader_parameter/uv_offset_y = 2.71
+shader_parameter/ratio = 0.075
+shader_parameter/power = 2.775
+shader_parameter/time_speed = 3.61
+shader_parameter/max_speed = 90.0
+shader_parameter/uv_rot = Vector2(0.11, 0.375)
+shader_parameter/cutlane_tex = ExtResource("8_h5ail")
 
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_bjqtf"]
 render_priority = 0

src/models/icosahedron/shaders/cutplane_effect_v2.gdshader

@@ -14,6 +14,35 @@ uniform float outline_thickness = 0.0; // how thick is the outline?
 
 varying vec3 ver;
 
+uniform sampler2D cutlane_tex;
+
+uniform float uv_offset_x = 0.;
+uniform float uv_offset_y = 0.;
+
+uniform float ratio : hint_range(0.0, 1.0) = 0.1;
+
+uniform float power = 3.0;
+
+uniform float time_speed = 10.0;
+
+uniform float max_speed = 90.0;
+
+uniform vec2 uv_rot;
+
+vec2 rotate(vec2 uv, vec2 pivot, float angle) {
+    // clang-format off
+    mat2 rotation = mat2(
+        vec2(sin(angle), -cos(angle)),
+        vec2(cos(angle), sin(angle)),
+    );
+    // clang-format on
+
+    uv -= pivot;
+    uv = uv * rotation;
+    uv += pivot;
+    return uv;
+}
+
 void vertex() {
     if (enable) {
         // VERTEX += NORMAL * outline_thickness; // apply the outlines thickness
@@ -22,6 +51,18 @@ void vertex() {
 }
 
 void fragment() {
+    vec2 uv = UV;
+
+    uv *= 2.0;
+    uv -= vec2(1.0);
+
+    float len = length(uv);
+
+    vec2 modified_uv = rotate(UV, uv_rot, TIME * time_speed);
+    float t = sin(TIME);
+    modified_uv.x += uv_offset_x;
+    modified_uv.y += uv_offset_y;
+    vec4 aaa = texture(cutlane_tex, modified_uv * 5.);
     if (enable) {
         float dist = cutplane_dist(cutplane, ver);
         bool a = dist > 0.;
@@ -33,7 +74,9 @@ void fragment() {
         // ALBEDO = a ? mix(vec3(1. - smoothstep(0.51, 0.9, r_sq) * 1.), color,
         // 0.01) : vec3(0.); ALBEDO = a ? vec3(smoothstep(0.58, 0.9, r_sq)) :
         // vec3(0.);
-        ALBEDO = color;
+        // vec2 rotated_uv = rotate(UV, vec2(0.5), TIME);
+        // ALBEDO = vec3(rotated_uv.g);
+        ALBEDO = color * (1. - vec3(aaa.a));
         ALPHA = a ? 0.7 : 0.;
 
     } else {

src/models/icosahedron/shaders/outline_v1.gdshader

@@ -1,5 +1,5 @@
 shader_type spatial;
-render_mode unshaded, cull_front;
+render_mode cull_front, unshaded;
 
 uniform bool enable = false;
 
@@ -8,15 +8,18 @@ uniform sampler2D screen_texture : hint_screen_texture,
                                    filter_nearest;
 
 // outline costumization
-uniform float outline_thickness = 0.05;
-uniform vec4 color : source_color = vec4(0.0);
+uniform float outline_thickness = 0.11;
+uniform vec4 color : source_color = vec4(0., 1., 0., 1.);
 
 // pulse customization
 uniform float pulse_speed = 12.;
 uniform float pulse_amplitude = 2.;
 
 varying vec3 ver;
 
+uniform sampler2D screen_texture : hint_screen_texture, repeat_disable, filter_nearest;
+uniform sampler2D outline_tex;
+
 void vertex() {
     if (enable) {
         float t = sin(TIME * pulse_speed) / pulse_amplitude + 1.;