e59acb79b8
Change-Id: If57fb79db8f8c5fd185fefaa202167c8082dd846 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/229921 Reviewed-by: Mike Klein <mtklein@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
45 lines
1.2 KiB
JSON
45 lines
1.2 KiB
JSON
{
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"MaxCount": 800,
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"Duration": 4,
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"Rate": 120,
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"Drawable": {
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"Type": "SkCircleDrawable",
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"Radius": 2
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},
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"Code": [
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"// float rand; Every read returns a random float [0 .. 1)",
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"layout(ctype=float) in uniform float dt;",
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"layout(ctype=float) in uniform float effectAge;",
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"",
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"struct Particle {",
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" float age;",
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" float lifetime;",
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" float2 pos;",
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" float2 dir;",
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" float scale;",
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" float2 vel;",
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" float spin;",
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" float4 color;",
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" float frame;",
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"};",
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"",
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"void spawn(inout Particle p) {",
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" p.lifetime = 2 + rand;",
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" float a = radians(effectAge * 1080);",
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" float s = 50 + rand * 10;",
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" p.vel.x = cos(a) * s;",
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" p.vel.y = sin(a) * s;",
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"}",
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"",
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"void update(inout Particle p) {",
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" p.scale = 0.5 + 1.5 * p.age;",
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" float3 a0 = float3(0.098, 0.141, 0.784);",
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" float3 a1 = float3(0.525, 0.886, 0.980);",
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" float3 b0 = float3(0.376, 0.121, 0.705);",
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" float3 b1 = float3(0.933, 0.227, 0.953);",
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" p.color.rgb = mix(mix(a0, a1, p.age), mix(b0, b1, p.age), rand);",
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"}",
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""
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],
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"Bindings": []
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} |