fragment_point_light.frag

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#version 450
 
layout(location = 0) in vec2 fragOffset;
layout(location = 0) out vec4 outColor;
 
struct PointLight {
    vec4 position; // ignore w
    vec4 color; // w is intensity
    float shininess;
};
 
layout(set = 0, binding = 0) uniform GlobalUbo {
    mat4 projection;
    mat4 view;
    mat4 invView;
    vec4 ambientLightColor; // w is intensity
    PointLight pointLights[10];
    int numLights;
} ubo;
 
layout(push_constant) uniform Push {
    vec4 position;
    vec4 color;
    float radius;
} push;
 
const float M_PI = 3.1415926538;
 
void main() {
    float dis = length(fragOffset);
    if (dis >= 1.0) {
        discard;
    }
 
    float cosDis = 0.5 * (cos(dis * M_PI) + 1.0);
    outColor = vec4(push.color.rgb + 0.5 * cosDis, cosDis);
}