Playstation Waves
shader port of “Playstation Waves” by sangwhan on ShaderToy
source: https://www.shadertoy.com/view/XdtfRB#
Shader code
shader_type canvas_item;
// sweetbabyalaska shader port of "Playstation Waves" by sangwhan on ShaderToy
// source: https://www.shadertoy.com/view/XdtfRB#
uniform vec3 background_color : source_color = vec3(0.25, 0.0, 0.2);
uniform float GWM = 2.05;
uniform float TM = 0.25;
uniform sampler2D tex;
float getAmp(float frequency) {
return texture(tex, vec2(frequency / 512.0, 0)).x;
}
float getWeight(float f) {
return (getAmp(f - 2.0) + getAmp(f - 1.0) +
getAmp(f + 2.0) + getAmp(f + 1.0) +
getAmp(f)) / 5.0;
}
void fragment() {
vec3 backdrop = mix(background_color, background_color, background_color);
vec2 uvTrue = FRAGCOORD.xy / (1.0 / SCREEN_PIXEL_SIZE);
vec2 uv = 2.0 * uvTrue - 1.0;
float li;
float gw;
float ts;
vec3 color = vec3(0.0);
for(float i = 0.0; i < 5.0; i++) {
uv.y += (0.2 * sin(uv.x + i / 7.0 - TIME * 0.6));
float Y = uv.y + getWeight(pow(i, 2.0) * 20.0) * (texture(tex, vec2(uvTrue.x, 1)).x - 0.5);
li = 0.4 + pow(1.6 * abs(mod(uvTrue.x + i / 1.1 + TIME, 2.0) - 1.0), 2.0);
gw = abs(li / (150.0 * Y));
ts = gw * (GWM + sin(TIME * TM));
color += vec3(ts, ts, ts);
}
COLOR = vec4(color + backdrop, 0.5);
}