Aura (3D)
This is an attempt to translate from Unity this shader: original, it adds an “Aura” to 3D models, the default parameters are fine but the noise texture needs some adjustments:
Texture properties
Check mark as Seamless
Check as Normalmap
Set Bump Strenght to 32
Noise properties
Set Octaves to 8
Set Period to 32
Set Persistance to 0.75
Set Lacunarity to 2.75
Shader code
shader_type spatial;
render_mode depth_draw_never, cull_front, blend_add;
uniform sampler2D _NoiseTex;
uniform float _Scale : hint_range(0.0, 0.05) = 0.05;
uniform float _Opacity: hint_range(0.01, 10.0) = 10.0;
uniform float _Edge : hint_range(0.0, 1.0) = 0.1;
uniform vec4 _ColorAura : hint_color = vec4(1.0,0.0,0.0,1.0);
uniform vec4 _ColorRim : hint_color = vec4(0.0,0.0,1.0,1.0);
uniform float _Brightness: hint_range(0.5, 20.0) = 2.0;
uniform float _SpeedX: hint_range(-10.0, 10.0) = 0.0;
uniform float _SpeedY: hint_range(-10.0, 10.0) = 3.0;
uniform float _OffsetFade: hint_range(-10.0, 10.0) = 1.0;
uniform float _GlowBrightness: hint_range(0.01, 30.0) = 3.0;
uniform float _OutlineFixed: hint_range(0.0, 5.0) = 2.0;
uniform float _RimPower2: hint_range(0.01, 10.0) = 6.0;
void vertex()
{
VERTEX = (NORMAL * _Edge) + VERTEX;
}
float saturate(float value)
{
return clamp(value,0.0,1.0);
}
void fragment() {
// noise
float speedx = TIME * _SpeedX * 0.005;
float speedy = TIME * _SpeedY * -0.005;
vec4 n = texture(_NoiseTex, vec2(SCREEN_UV.x * _Scale + speedx, SCREEN_UV.y * _Scale + speedy));
// same noise, but bigger
vec4 n2 = texture(_NoiseTex, vec2(SCREEN_UV.x* (_Scale * 0.5) + speedx, SCREEN_UV.y * (_Scale * 0.5) + speedy));
// same but smaller
vec4 n3 = texture(_NoiseTex, vec2(SCREEN_UV.x* (_Scale * 2.0) + speedx, SCREEN_UV.y * (_Scale * 2.0) + speedy));
// combined
float combinedNoise = (n.r * n2.r * 2.0) * n3.r * 2.0;
float rims = pow(saturate(dot(VIEW, NORMAL)), _RimPower2); // calculate inverted rim based on view and normal
vec4 rim = vec4(rims);
rim -= combinedNoise; // subtract noise texture
rim += (rims * _OutlineFixed);
vec4 texturedRim = vec4(saturate(rim.a * _Opacity)); // make a harder edge
vec4 extraRim = (saturate((_Edge + rim.a) * _Opacity) - texturedRim) * _Brightness;// extra edge, subtracting the textured rim
vec4 result = (_ColorAura * texturedRim) + (_ColorRim * extraRim);// combine both with colors
float fade = saturate((VERTEX.y + _OffsetFade) * 2.0);
result *= fade;
EMISSION = vec3(result.r, result.g, result.b);
ALPHA = result.a;
}
Ayt, time to make JoJo in Godot.
It does not work with my low poly model. It becomes emerged with this aura. Or is it this kind of shader that is applied to a duplicated mesh ?
It is a duplicated mesh (scaled and front culling) I didn’t test it with a low poly model.
Hi mate I’ve been fiddling with this this afternoon because it’s exactly the effect I was trying to achieve, and I have been running in to one problem I can’t quite figure out: when the camera is viewing the mesh with this shader attached from certain angles, the mesh starts to be culled from the bottom, to the point where if I am viewing the model from below looking up, it will be invisible. What do you think the issue here might be from? Cheers
nice my friend
This doesn’t work for Godot 4.3 (ofc source_color replacing hint_color), tried a primitive cube and a primitive quad mesh
I haven’t found a single outline shader that works, all of the below don’t work either lol
https://godotshaders.com/shader/outline-and-glow-shader-sprite-3d/
https://godotshaders.com/shader/pixel-perfect-outline-shader/
Updated to godot 4.3, add the noise and if the object is small scale the noise Frequency until you see the effect.
shader_type spatial; render_mode depth_draw_never, cull_front, blend_add; uniform sampler2D _NoiseTex; uniform float _Scale : hint_range(0.0, 0.05) = 0.05; uniform float _Opacity: hint_range(0.01, 10.0) = 10.0; uniform float _Edge : hint_range(0.0, 1.0) = 0.1; uniform vec4 _ColorAura : source_color = vec4(1.0,0.0,0.0,1.0); uniform vec4 _ColorRim : source_color = vec4(0.0,0.0,1.0,1.0); uniform float _Brightness: hint_range(0.5, 20.0) = 2.0; uniform float _SpeedX: hint_range(-10.0, 10.0) = 0.0; uniform float _SpeedY: hint_range(-10.0, 10.0) = 3.0; uniform float _OffsetFade: hint_range(-10.0, 10.0) = 1.0; uniform float _GlowBrightness: hint_range(0.01, 30.0) = 3.0; uniform float _OutlineFixed: hint_range(0.0, 5.0) = 2.0; uniform float _RimPower2: hint_range(0.01, 10.0) = 6.0; void vertex() { VERTEX = (NORMAL * _Edge) + VERTEX; } float saturate(float value) { return clamp(value,0.0,1.0); } void fragment() { // noise float speedx = TIME * _SpeedX * 0.005; float speedy = TIME * _SpeedY * -0.005; vec4 n = texture(_NoiseTex, vec2(SCREEN_UV.x * _Scale + speedx, SCREEN_UV.y * _Scale + speedy)); // same noise, but bigger vec4 n2 = texture(_NoiseTex, vec2(SCREEN_UV.x* (_Scale * 0.5) + speedx, SCREEN_UV.y * (_Scale * 0.5) + speedy)); // same but smaller vec4 n3 = texture(_NoiseTex, vec2(SCREEN_UV.x* (_Scale * 2.0) + speedx, SCREEN_UV.y * (_Scale * 2.0) + speedy)); // combined float combinedNoise = (n.r * n2.r * 2.0) * n3.r * 2.0; float rims = pow(saturate(dot(VIEW, NORMAL)), _RimPower2); // calculate inverted rim based on view and normal vec4 rim = vec4(rims); rim -= combinedNoise; // subtract noise texture rim += (rims * _OutlineFixed); vec4 texturedRim = vec4(saturate(rim.a * _Opacity)); // make a harder edge vec4 extraRim = (saturate((_Edge + rim.a) * _Opacity) - texturedRim) * _Brightness;// extra edge, subtracting the textured rim vec4 result = (_ColorAura * texturedRim) + (_ColorRim * extraRim);// combine both with colors float fade = saturate((VERTEX.y + _OffsetFade) * 2.0); result *= fade; EMISSION = vec3(result.r, result.g, result.b); ALPHA = result.a; }