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42 lines
692 B
Plaintext
42 lines
692 B
Plaintext
#version 440
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layout (local_size_x = 256) in;
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struct Data
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{
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vec2 pos;
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float dir;
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};
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layout(std140, binding = 0) buffer StorageBuffer
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{
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Data d[];
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} buf;
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layout(std140, binding = 1) uniform UniformBuffer
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{
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float step;
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uint count;
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} ubuf;
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void main()
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{
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uint index = gl_GlobalInvocationID.x;
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if (index < ubuf.count) {
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vec2 p = buf.d[index].pos;
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float dir = buf.d[index].dir;
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p.x += dir * ubuf.step * 0.01;
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if (p.x > 1.0) {
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p.x = 1.0;
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buf.d[index].dir *= -1.0;
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}
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if (p.x < -1.0) {
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p.x = -1.0;
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buf.d[index].dir *= -1.0;
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}
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buf.d[index].pos = p;
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}
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}
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