Simple cel shader

src/player/cel_shader.gdshader

@@ -0,0 +1,51 @@
+// NOTE: Shader automatically converted from Godot Engine 4.2.2.stable's StandardMaterial3D.
+
+shader_type spatial;
+render_mode blend_mix,depth_draw_opaque,cull_disabled,diffuse_toon,specular_toon;
+uniform vec4 albedo : source_color;
+uniform sampler2D texture_albedo : source_color,filter_linear_mipmap,repeat_enable;
+uniform float roughness : hint_range(0,1);
+uniform sampler2D texture_metallic : hint_default_white,filter_linear_mipmap,repeat_enable;
+uniform vec4 metallic_texture_channel;
+uniform sampler2D texture_roughness : hint_roughness_r,filter_linear_mipmap,repeat_enable;
+uniform float metallic;
+uniform vec3 uv1_scale;
+uniform vec3 uv1_offset;
+uniform vec3 uv2_scale;
+uniform vec3 uv2_offset;
+
+uniform sampler2D albedo_gradient;
+uniform sampler2D shadow_gradient;
+uniform sampler2D fresnel_ramp;
+
+
+float fresnel(float amount, vec3 normal, vec3 view) {
+	return pow((1.0 - clamp(dot(normalize(normal), normalize(view)), 0.0, 1.0)), amount);
+}
+
+void vertex() {
+	UV=UV*uv1_scale.xy+uv1_offset.xy;
+}
+
+void fragment() {
+	float basic_fresnel = fresnel(4.0, NORMAL, VIEW);
+
+	vec2 base_uv = UV;
+	vec4 albedo_tex = texture(texture_albedo, base_uv);
+	ALBEDO = albedo.rgb * albedo_tex.rgb + (basic_fresnel * texture(fresnel_ramp, vec2(basic_fresnel, 0.0)).rgb * 1.0);
+
+	float metallic_tex = dot(texture(texture_metallic,base_uv),metallic_texture_channel);
+	METALLIC = metallic_tex * metallic;
+	vec4 roughness_texture_channel = vec4(1.0,0.0,0.0,0.0);
+	float roughness_tex = dot(texture(texture_roughness,base_uv),roughness_texture_channel);
+	ROUGHNESS = roughness_tex * roughness;
+	SPECULAR = 0.0;
+}
+
+
+void light() {
+	float dotproduct = clamp(dot(NORMAL, LIGHT), -0.9, 0.9);
+	float sample = clamp((dotproduct + 1.0) * ATTENUATION / 2.1, 0.05, 0.95);
+	vec4 shaded = texture(shadow_gradient, vec2(sample, 0.0));
+	DIFFUSE_LIGHT += (shaded.rgb * LIGHT_COLOR) / 2.0;
+}

src/player/player.tscn

@@ -1,16 +1,40 @@
-[gd_scene load_steps=7 format=3 uid="uid://bqp5mwyat3asv"]
+[gd_scene load_steps=12 format=3 uid="uid://bqp5mwyat3asv"]
 
 [ext_resource type="Script" path="res://src/player/player.gd" id="1_h16ke"]
 [ext_resource type="Texture2D" uid="uid://b0yefajw1cqo" path="res://assets/textures/character_placeholder.png" id="1_iys0p"]
+[ext_resource type="Shader" path="res://src/player/cel_shader.gdshader" id="2_lc05i"]
 [ext_resource type="Script" path="res://src/player/third_person_camera.gd" id="3_gichr"]
 
-[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_ccqgr"]
-albedo_texture = ExtResource("1_iys0p")
-distance_fade_mode = 2
-distance_fade_max_distance = 1.0
+[sub_resource type="Gradient" id="Gradient_n24ft"]
+offsets = PackedFloat32Array(0.443836, 0.852055)
+
+[sub_resource type="GradientTexture1D" id="GradientTexture1D_k01mp"]
+gradient = SubResource("Gradient_n24ft")
+
+[sub_resource type="Gradient" id="Gradient_s23j5"]
+interpolation_mode = 1
+offsets = PackedFloat32Array(0.49, 0.5)
+
+[sub_resource type="GradientTexture1D" id="GradientTexture1D_5ivp0"]
+gradient = SubResource("Gradient_s23j5")
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_4kmto"]
+render_priority = 0
+shader = ExtResource("2_lc05i")
+shader_parameter/albedo = Color(1, 1, 1, 1)
+shader_parameter/roughness = 1.0
+shader_parameter/metallic_texture_channel = null
+shader_parameter/metallic = 0.0
+shader_parameter/uv1_scale = Vector3(1, 1, 1)
+shader_parameter/uv1_offset = Vector3(0, 0, 0)
+shader_parameter/uv2_scale = Vector3(1, 1, 1)
+shader_parameter/uv2_offset = Vector3(0, 0, 0)
+shader_parameter/texture_albedo = ExtResource("1_iys0p")
+shader_parameter/shadow_gradient = SubResource("GradientTexture1D_5ivp0")
+shader_parameter/fresnel_ramp = SubResource("GradientTexture1D_k01mp")
 
 [sub_resource type="CapsuleMesh" id="CapsuleMesh_8sedy"]
-material = SubResource("StandardMaterial3D_ccqgr")
+material = SubResource("ShaderMaterial_4kmto")
 
 [sub_resource type="CapsuleShape3D" id="CapsuleShape3D_otw5j"]