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#if __VERSION__ >= 130
#define varying in
out vec4 mgl_FragColor;
#else
#define mgl_FragColor gl_FragColor
#endif
#include es_precision.glsl
#include mgl_lightdef.glsl
#include mgl_const.glsl
#include mgl_uniform.glsl
#include mgl_varying.glsl
// #define TEST 1
void main (void)
{
mgl_FragColor = frontColor;
if( pointSmooth > 0.5 ) {
// smooth (AA)
const float border = 0.90; // take/give 10% for AA
// origin to 0/0, [-1/-1 .. 1/1]
vec2 pointPos = 2.0 * gl_PointCoord - 1.0 ;
float r = length( pointPos ); // one-circle sqrt(x * x + y * y), range: in-circle [0..1], out >1
float r1 = 1.0 - ( step(border, r) * 10.0 * ( r - border ) ) ; // [0..1]
#ifndef TEST
if( r1 < 0.0 ) {
discard;
}
#endif
#ifndef TEST
mgl_FragColor.a *= r1;
#else
mgl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);
mgl_FragColor.r = r1 < 0.0 ? 1.0 : 0.0;
mgl_FragColor.g = r > 1.0 ? 1.0 : 0.0;
mgl_FragColor.b = r > border ? 1.0 : 0.0;
#endif
}
}
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