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