Morrowind Enchanted Item Sheen

A simple recreation of the Morrowind effect that Enchanted Items have. That kind of ‘plastic wrap’ sheen and shimmer.

To use: create a shader material .tres file and set your material_overlay to the material.

Shader code

shader_type spatial;
render_mode blend_add, depth_prepass_alpha, cull_back;

uniform sampler2D noise_tex;
uniform float noise_scale = 2.0;
uniform float noise_speed = 0.5;

uniform vec4 tint_color : source_color = vec4(0.283, 0.423, 1.0, 1.0);
uniform float fresnel_strength = 2.0;
uniform float sheen_intensity = 1.5;

void fragment() {
    vec2 uv = UV * noise_scale;
    uv += TIME * noise_speed;

    float noise = texture(noise_tex, uv).r;
    float fresnel = pow(1.0 - dot(NORMAL, VIEW), fresnel_strength);

    float magic_mask = fresnel * (0.5 + noise * 0.5);
    magic_mask *= 0.9 + sin(TIME * 2.0) * 0.1;

    ALBEDO = tint_color.rgb * magic_mask * sheen_intensity;
    ALPHA = magic_mask;
}

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