24 lines
784 B
Plaintext
24 lines
784 B
Plaintext
const highp float percentagedistanceshow = 0.05;
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const highp float gradientfalloffwidth = 3.0;
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highp vec4 circle(in highp vec2 uv, in highp vec2 pos, highp float rad, in highp vec3 color) {
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highp float d = length(pos - uv) - rad;
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highp float t = clamp(d, 0.0, 1.0);
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return vec4(color, t);
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}
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void fragment() {
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highp vec2 uv = FRAGCOORD.xy;
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highp vec2 res_xy = vec2(1.0/SCREEN_PIXEL_SIZE.x, 1.0/SCREEN_PIXEL_SIZE.y);
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highp vec2 center = res_xy*0.5;
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highp float radius = percentagedistanceshow * res_xy.y;
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highp vec4 grad = vec4(0.8 - length( uv - center )/res_xy.y * gradientfalloffwidth);
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highp vec4 layer1 = vec4(vec3(255.0),0.0);
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highp vec4 layer2 = circle(uv, center, radius, grad.rgb);
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COLOR = mix(layer1, layer2, layer2.a);
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}
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