space-crush/space-crush-app/resources/shader/planet/shared.glsl

struct FragmentData {
    vec2 texCoords;
    vec3 color;
};

struct VertexData {
    vec2  pos;
    float size;
    vec3  color;
};

const float GLOW_SIZE  = 2.0; // relative to planet size
const float GLOW_ALPHA = 0.2;