Electric Noise
My attempt at converting https://www.shadertoy.com/view/ldlXRS
See the link for animation.
To use, place the shader on a shaderMaterial on a colorRect.
Import the sample noise texture or use your own. Ensure that the import settings for the noise texture are set to repeat. (Import menu -> Flags section -> Repeat = Enabled).
Please enjoy
I learned to convert glsl shaders to godot shaders using these resources. You can learn it too!
https://docs.godotengine.org/en/3.4/tutorials/shaders/converting_glsl_to_godot_shaders.html
https://www.youtube.com/watch?v=Kn49zhCwg-0
Shader code
shader_type canvas_item;
uniform sampler2D noiseTexture;
uniform vec3 baseColorRGB = vec3(0.2, 0.1, 0.4);
uniform float speed = 0.15;
mat2 makem2(in float theta)
{
float c = cos(theta);
float s = sin(theta);
vec2 part1 = vec2(c, -s);
vec2 part2 = vec2(s, c);
return mat2(part1, part2);
}
float noise(in vec2 x)
{
return texture(noiseTexture, x * 0.01).x;
}
float fbm(in vec2 p)
{
float z = 2.0;
float rz = 0.0;
vec2 bp = p;
for (float i = 1.0; i < 6.0; i++)
{
rz += abs((noise(p) - 0.5) * 2.0) / z;
z = z * 2.0;
p = p * 2.0;
}
return rz;
}
float dualfbm(in vec2 p)
{
//get two rotated fbm calls and displace the domain
vec2 p2 = p * 0.7;
vec2 basis = vec2(fbm(p2 - (TIME * speed) * 1.6), fbm(p2 + (TIME * speed) * 1.7));
basis = (basis - 0.5) * 0.2;
p += basis;
//coloring
return fbm(p * makem2((TIME * speed) * 0.2));
}
float circ(vec2 p)
{
float tau = 6.2831853;
float r = length(p);
r = 0.5 * log(r);
return abs(mod(r * 4.0, tau) - 3.14) * 3.0 + 0.2;
}
void fragment()
{
//setup system
vec2 p = UV.xy / (1.0 / TEXTURE_PIXEL_SIZE).xy - 0.5;
p.x *= (1.0 / TEXTURE_PIXEL_SIZE).x / (1.0 / TEXTURE_PIXEL_SIZE).y;
p *= 4.0;
float rz = dualfbm(p);
//rings
p /= exp(mod((TIME * speed) * 10.0, 3.14159));
rz *= pow(abs((0.1 - circ(p))), 0.9);
//final color
vec3 col = baseColorRGB / rz;
col = pow(abs(col), vec3(0.99));
COLOR = vec4(col, 1.0);
}
Hello! I posted the same comment here https://godotshaders.com/shader/flaring-star/ because both have the same problem. I think you need to check the license on the ShaderToy site. The author published using a license incompatible with CC0 that you put here. The original license is License Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.