19 lines
751 B
Plaintext
19 lines
751 B
Plaintext
|
varying vec3 vColor;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
float distance = length(gl_PointCoord - vec2(0.5, 0.5));
|
||
|
|
float radius = 0.5; // The radius of the circle, where 0.5 is the edge of the point sprite
|
||
|
|
float intensity = 0.5; // Gaussian for smooth intensity increase
|
||
|
|
// float intensity = exp(-pow(distance * 3.0, 2.0)); // Gaussian for smooth intensity increase
|
||
|
|
|
||
|
|
// If the distance is greater than the radius, discard the fragment (make it transparent)
|
||
|
|
if (distance > radius) {
|
||
|
|
discard;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Use the intensity to modulate the color within the circle
|
||
|
|
vec3 brightColor = vColor * intensity;
|
||
|
|
brightColor = clamp(brightColor, 0.0, 2.5);
|
||
|
|
|
||
|
|
gl_FragColor = vec4(brightColor, 1.0); // Full alpha within the circle
|
||
|
|
}
|