Procedural Symbiote/Fresnel
You WILL need to provide a normal map.
I used this one
A procedural spatial shader designed to create animated, organic surfaces similar to alien symbiotes, liquid metal, or bad glass using the inverted fresnel option on a light color.
Shader code
shader_type spatial;
uniform vec4 baseColor : source_color = vec4(0, 0, 0, 1.0);
uniform vec4 fresnelAlbedo : source_color = vec4(0.3, 0.3, 0.3, 1.0);
uniform bool invertFresnel = false;
uniform float roughness = 0.2;
uniform float metallic = 0.3;
uniform sampler2D normalMap;
uniform float normalMapStrngth = 0.40;
uniform float scaleX = 5;
uniform float scaleY = 5;
uniform float speedX = 20;
uniform float speedY = 20;
vec3 fresnel_glow(float amount, float intensity, vec3 color, vec3 normal, vec3 view)
{
return pow((1.0 - dot(normalize(normal), normalize(view))), amount) * color * intensity;
}
void fragment(){
float f_dot = 1.0 - dot(normalize(NORMAL), normalize(VIEW));
float fresnel_factor = pow(f_dot, 4.0);
vec2 uv_offset = vec2(TIME * speedX / 10000.0, TIME * speedY / 10000.0);
NORMAL_MAP = texture(normalMap, (UV + uv_offset) * vec2(scaleX, scaleY)).rgb;
NORMAL_MAP_DEPTH = normalMapStrngth;
ROUGHNESS = roughness;
METALLIC = metallic;
if (invertFresnel){
ALBEDO = mix(baseColor.rgb, fresnelAlbedo.rgb, clamp(fresnel_factor * 4.5, 0.0, 1.0));
}
else{
vec3 fresnel = fresnel_factor * fresnelAlbedo.rgb * 4.5;
ALBEDO = baseColor.rgb + fresnel;
}
}
