wehub-resource-sync
42 lines
1.2 KiB
HLSL
42 lines
1.2 KiB
HLSL
#include "shared/hash-functions.hlsl"
|
|
#include "shared/noise-functions.hlsl"
|
|
#include "shared/point.hlsl"
|
|
#include "shared/quat-functions.hlsl"
|
|
|
|
cbuffer Params : register(b0)
|
|
{
|
|
float3 Center;
|
|
float MaxAcceleration;
|
|
float Acceleration;
|
|
float DecayExponent;
|
|
}
|
|
|
|
RWStructuredBuffer<Point> Points : u0;
|
|
|
|
[numthreads(64, 1, 1)] void main(uint3 i : SV_DispatchThreadID)
|
|
{
|
|
float3 pos = Points[i.x].Position;
|
|
// float4 rot = Points[i.x].Rotation;
|
|
|
|
float3 d = pos - Center;
|
|
|
|
float distance = length(d);
|
|
if (distance < 0.001)
|
|
return;
|
|
|
|
float3 dNormalized = d / distance;
|
|
|
|
float force = clamp(Acceleration / pow(distance, DecayExponent), -MaxAcceleration, MaxAcceleration);
|
|
float3 offset = normalize(dNormalized) * force;
|
|
|
|
Points[i.x].Position += offset;
|
|
|
|
// Points[i.x].Velocity += force;
|
|
// float4 normalizedRot;
|
|
// float v = q_separate_v(rot, normalizedRot);
|
|
// float3 forward = qRotateVec3(float3(0,0, v), normalizedRot);
|
|
// forward -= normalize(direction) * force;
|
|
// float newV = length(forward);
|
|
// float4 newRotation = qLookAt(normalize(Points[i.x].Velocity), float3(0,0,1));
|
|
// Points[i.x].Rotation = q_encode_v(newRotation, newV);
|
|
} |