155 lines
4.3 KiB
Plaintext
155 lines
4.3 KiB
Plaintext
[gd_scene load_steps=7 format=2]
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[ext_resource path="res://material_maker/windows/sdf_builder/preview_3d.gd" type="Script" id=1]
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[ext_resource path="res://material_maker/windows/sdf_builder/gizmo.tscn" type="PackedScene" id=2]
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[sub_resource type="QuadMesh" id=2]
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size = Vector2( 100, 100 )
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[sub_resource type="Shader" id=3]
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code = "shader_type spatial;
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varying float elapsed_time;
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varying vec3 world_camera;
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varying vec3 world_position;
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const int MAX_STEPS = 100;
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const float MAX_DIST = 100.0;
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const float SURF_DIST = 1e-3;
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float box3d(vec3 uv, vec3 s) {
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vec3 q = abs(uv) - s;
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return length(max(q, 0.0))+min(max(q.x, max(q.y, q.z)), 0.0);
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}
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vec2 GetDist(vec3 p) {
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float _seed_variation_ = 0.0;
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vec2 d = vec2(box3d(p, vec3(0.5)), 0.0);
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return d;
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}
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vec2 RayMarch(vec3 ro, vec3 rd) {
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float dO = 0.0;
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float color = 0.0;
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vec2 dS;
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for (int i = 0; i < MAX_STEPS; i++)
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{
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vec3 p = ro + dO * rd;
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dS = GetDist(p);
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dO += dS.x;
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if (dS.x < SURF_DIST || dO > MAX_DIST) {
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color = dS.y;
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break;
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}
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}
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return vec2(dO, color);
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}
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vec3 GetNormal(vec3 p) {
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vec2 e = vec2(1e-2, 0);
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vec3 n = GetDist(p).x - vec3(
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GetDist(p - e.xyy).x,
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GetDist(p - e.yxy).x,
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GetDist(p - e.yyx).x
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);
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return normalize(n);
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}
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void vertex() {
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elapsed_time = TIME;
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vec4 world_position_xyzw = WORLD_MATRIX*vec4(VERTEX, 1.0);
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world_position = world_position_xyzw.xyz/world_position_xyzw.w;
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vec4 world_camera_xyzw = CAMERA_MATRIX * vec4(0, 0, 0, 1);
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world_camera = world_camera_xyzw.xyz/world_camera_xyzw.w;
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}
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void fragment() {
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float _seed_variation_ = 0.0;
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vec3 ro = world_camera;
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vec3 rd = normalize(world_position - ro);
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vec2 rm = RayMarch(ro, rd);
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float d = rm.x;
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if (d >= MAX_DIST) {
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discard;
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} else {
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vec3 p = ro + rd * d;
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ALBEDO = vec3(1.0);
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ROUGHNESS = 1.0;
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METALLIC = 0.0;
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NORMAL = (INV_CAMERA_MATRIX*WORLD_MATRIX*vec4(GetNormal(p), 0.0)).xyz;
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}
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}
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"
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[sub_resource type="ShaderMaterial" id=4]
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shader = SubResource( 3 )
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[sub_resource type="PlaneShape" id=5]
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margin = 1.0
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plane = Plane( 0, 0, 1, 0 )
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[node name="Preview3D" type="ViewportContainer" groups=["preview"]]
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margin_right = 1280.0
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margin_bottom = 720.0
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mouse_filter = 1
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size_flags_horizontal = 3
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size_flags_vertical = 3
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script = ExtResource( 1 )
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__meta__ = {
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"_edit_use_anchors_": false
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}
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[node name="Viewport" type="Viewport" parent="."]
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handle_input_locally = false
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render_target_update_mode = 3
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physics_object_picking = true
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[node name="Gizmo" parent="Viewport" instance=ExtResource( 2 )]
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[node name="CameraPosition" type="Spatial" parent="Viewport"]
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[node name="CameraRotation1" type="Spatial" parent="Viewport/CameraPosition"]
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[node name="CameraRotation2" type="Spatial" parent="Viewport/CameraPosition/CameraRotation1"]
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[node name="Camera" type="Camera" parent="Viewport/CameraPosition/CameraRotation1/CameraRotation2"]
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transform = Transform( 1, 0, 0, 0, 0.866025, 0.5, 0, -0.5, 0.866025, 0, 2, 4 )
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current = true
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[node name="Plane" type="MeshInstance" parent="Viewport/CameraPosition/CameraRotation1/CameraRotation2/Camera"]
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transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, -50 )
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mesh = SubResource( 2 )
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material/0 = SubResource( 4 )
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[node name="Area" type="Area" parent="Viewport/CameraPosition/CameraRotation1/CameraRotation2/Camera/Plane"]
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input_capture_on_drag = true
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[node name="CollisionShape" type="CollisionShape" parent="Viewport/CameraPosition/CameraRotation1/CameraRotation2/Camera/Plane/Area"]
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shape = SubResource( 5 )
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[node name="OmniLight" type="DirectionalLight" parent="Viewport"]
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transform = Transform( 0.999941, -0.00199387, -0.01067, 0.0106636, -0.00320327, 0.999938, -0.00202793, -0.999993, -0.00318182, 0, 3.40578, 0 )
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[node name="Buttons" type="HBoxContainer" parent="."]
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margin_right = 40.0
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margin_bottom = 40.0
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[node name="GizmoButton" type="Button" parent="Buttons"]
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margin_right = 54.0
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margin_bottom = 40.0
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text = "Gizmo"
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[connection signal="resized" from="." to="." method="_on_Preview3D_resized"]
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[connection signal="rotated" from="Viewport/Gizmo" to="." method="_on_Gizmo_rotated"]
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[connection signal="translated" from="Viewport/Gizmo" to="." method="_on_Gizmo_translated"]
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[connection signal="input_event" from="Viewport/CameraPosition/CameraRotation1/CameraRotation2/Camera/Plane/Area" to="." method="_on_Background_input_event"]
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[connection signal="pressed" from="Buttons/GizmoButton" to="." method="_on_GizmoButton_pressed"]
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