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GunnarKarlsson/circle_mouse_frag_shader.txt

Last active September 12, 2018 01:32
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Frag shader: circle follows mouse
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circle_mouse_frag_shader.txt
void mainImage( out vec4 fragColor, in vec2 fragCoord )
{
vec3 col = vec3(0.5, 0.5, 0.5);
float radius = 50.0;
float dist_squared = dot(iMouse.xy - fragCoord.xy, iMouse.xy - fragCoord.xy);
if (dist_squared < (radius * radius)) {
col += vec3(0.0, 1.0, 1.0);
}
fragColor = vec4(col,1.0);
}
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