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Shader cleanup - applies DRY to various shaders in the game (#23294)

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shader cleanup - applies DRY to various shaders in the game
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deathride58
2024-01-03 03:35:25 -05:00
committed by GitHub
parent 0e18d54cf7
commit ef1cba70b3
6 changed files with 15 additions and 82 deletions
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36
Resources/Textures/Shaders/radiation.swsl
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@@ -6,46 +6,14 @@ uniform highp vec2 renderScale;
uniform highp float life;
uniform highp float range;
highp vec2 random(highp vec2 uv){
uv = vec2( dot(uv, vec2(127.1,311.7) ),
dot(uv, vec2(269.5,183.3) ) );
return -1.0 + 2.0 * fract(sin(uv) * 43758.5453123);
}
highp float noise(highp vec2 uv) {
highp vec2 uv_index = floor(uv);
highp vec2 uv_fract = fract(uv);
highp vec2 blur = smoothstep(0.0, 1.0, uv_fract);
return mix( mix( dot( random(uv_index + vec2(0.0,0.0) ), uv_fract - vec2(0.0,0.0) ),
dot( random(uv_index + vec2(1.0,0.0) ), uv_fract - vec2(1.0,0.0) ), blur.x),
mix( dot( random(uv_index + vec2(0.0,1.0) ), uv_fract - vec2(0.0,1.0) ),
dot( random(uv_index + vec2(1.0,1.0) ), uv_fract - vec2(1.0,1.0) ), blur.x), blur.y) * 0.5 + 0.5;
}
highp float fbm(highp vec2 uv) {
const int octaves = 6;
highp float amplitude = 0.5;
highp float frequency = 3.0;
highp float value = 0.0;
for(int i = 0; i < octaves; i++) {
value += amplitude * noise(frequency * uv);
amplitude *= 0.5;
frequency *= 2.0;
}
return value;
}
void fragment() {
highp vec2 finalCoords = (FRAGCOORD.xy - positionInput) / (renderScale * 32.0);
highp float distanceToCenter = length(finalCoords);
highp float nlife = pow(sin(clamp(life, 0.0, 1.0) * 3.141592), 0.5);
highp float on = ((range - distanceToCenter) / range);
highp float n = on;
highp vec2 fcOffset = vec2(fbm(finalCoords.xy + life / 2.0),fbm(finalCoords.yx + life / 2.0));
n *= fbm((finalCoords + fcOffset) / (nlife / (n * 1.5))) * 1.1;
highp vec2 fcOffset = vec2(zFBM(finalCoords.xy + life / 2.0),zFBM(finalCoords.yx + life / 2.0));
n *= zFBM((finalCoords + fcOffset) / (nlife / (n * 1.5))) * 1.1;
n *= clamp(nlife, 0.0, 1.0);
highp float a = 0.0; // Alpha
highp float p = 0.0; // Position between L and R stops