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gevonden :)

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Beppe Vanrolleghem
2024-04-27 18:49:37 +02:00
parent c8b4375ba5
commit d40beb27fb
1 changed files with 10 additions and 4 deletions
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14
learning/shapes/circle.frag
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@@ -11,8 +11,14 @@ uniform float u_time;
void main() {
vec2 st = gl_FragCoord.xy/u_resolution;
// vec3 color = vec3(0.0,0.0,0.0);
float pct = distance(gl_FragCoord.xy, (vec2(0.5)*u_resolution)) // find a way to make this a circle even when non 1:1 aspect ratio
vec3 color = vec3(pct);
gl_FragColor = vec4(color, 1.0);
// find a way to make this a circle even when non 1:1 aspect ratio
// i found something, although i cannot say with full competence it works 100%
//float variable = sqrt((u_resolution.x * u_resolution.x) + (u_resolution.y * u_resolution.y));
//float variable = (u_resolution.x + u_resolution.y)/((sin(u_time) + 1.0) / 2.0);
float variable = ((u_resolution.x + u_resolution.y)*5.0)/7.0;
float pct = distance(gl_FragCoord.xy, (vec2(0.5)*u_resolution)) / variable;
vec3 color = vec3(1.0-step(0.1,pct));
//vec3 color = vec3(pct);
float test = 1.0;
gl_FragColor = vec4(color, test);
}