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#version 100
precision mediump float;
// Input uniform values
uniform vec4 color;
// NOTE: Add here your custom variables
void main()
{
// Each point is drawn as a screen space square of gl_PointSize size. gl_PointCoord contains where we are inside of
// it. (0, 0) is the top left, (1, 1) the bottom right corner.
// Draw each point as a colored circle with alpha 1.0 in the center and 0.0 at the outer edges.
gl_FragColor = vec4(color.rgb, color.a * (1.0 - length(gl_PointCoord.xy - vec2(0.5))*2.0));
}
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