| Brian Osman | 7c979f5 | 2019-02-12 13:27:51 -0500 | [diff] [blame] | 1 | { |
| 2 | "MaxCount": 4096, |
| Brian Osman | 8b6283f | 2019-02-14 16:55:21 -0500 | [diff] [blame] | 3 | "Duration": 1, |
| Brian Osman | 7c979f5 | 2019-02-12 13:27:51 -0500 | [diff] [blame] | 4 | "Rate": 90, |
| Brian Osman | 543d2e2 | 2019-02-15 14:29:38 -0500 | [diff] [blame] | 5 | "Drawable": { |
| 6 | "Type": "SkCircleDrawable", |
| 7 | "Radius": 2 |
| Brian Osman | 7c979f5 | 2019-02-12 13:27:51 -0500 | [diff] [blame] | 8 | }, |
| Brian Osman | d6108ad | 2019-07-25 16:27:35 -0400 | [diff] [blame^] | 9 | "Spawn": [ |
| 10 | "", |
| 11 | "// float rand; Every read returns a random float [0 .. 1)", |
| 12 | "layout(ctype=float) in uniform float dt;", |
| 13 | "layout(ctype=float) in uniform float effectAge;", |
| 14 | "", |
| 15 | "struct Particle {", |
| 16 | " float age;", |
| 17 | " float lifetime;", |
| 18 | " float2 pos;", |
| 19 | " float2 dir;", |
| 20 | " float scale;", |
| 21 | " float2 vel;", |
| 22 | " float spin;", |
| 23 | " float4 color;", |
| 24 | " float frame;", |
| 25 | "};", |
| 26 | "", |
| 27 | "float2 circle() {", |
| 28 | " float x;", |
| 29 | " float y;", |
| 30 | " do {", |
| 31 | " x = rand * 2 - 1;", |
| 32 | " y = rand * 2 - 1;", |
| 33 | " } while (x*x + y*y > 1);", |
| 34 | " return float2(x, y);", |
| 35 | "}", |
| 36 | "", |
| 37 | "void main(inout Particle p) {", |
| 38 | " p.lifetime = 30;", |
| 39 | " p.pos = circle() * 40;", |
| 40 | "}", |
| 41 | "" |
| 42 | ], |
| 43 | "Update": [ |
| 44 | "", |
| 45 | "// float rand; Every read returns a random float [0 .. 1)", |
| 46 | "layout(ctype=float) in uniform float dt;", |
| 47 | "layout(ctype=float) in uniform float effectAge;", |
| 48 | "", |
| 49 | "struct Particle {", |
| 50 | " float age;", |
| 51 | " float lifetime;", |
| 52 | " float2 pos;", |
| 53 | " float2 dir;", |
| 54 | " float scale;", |
| 55 | " float2 vel;", |
| 56 | " float spin;", |
| 57 | " float4 color;", |
| 58 | " float frame;", |
| 59 | "};", |
| 60 | "", |
| 61 | "void main(inout Particle p) {", |
| 62 | " p.vel += normalize(p.pos) * dt * 10;", |
| 63 | " p.scale = mix(0.25, 3, p.age);", |
| 64 | "}", |
| 65 | "" |
| 66 | ], |
| Brian Osman | fe49163 | 2019-07-25 15:14:50 -0400 | [diff] [blame] | 67 | "Bindings": [] |
| Brian Osman | 7c979f5 | 2019-02-12 13:27:51 -0500 | [diff] [blame] | 68 | } |