wehub-resource-sync
47 lines
1.2 KiB
HLSL
47 lines
1.2 KiB
HLSL
#include "shared/hash-functions.hlsl"
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#include "shared/noise-functions.hlsl"
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#include "shared/point.hlsl"
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#include "shared/quat-functions.hlsl"
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cbuffer Params : register(b0)
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{
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float3 Center;
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float Radius;
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float RadiusFallOff;
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float RadialForce;
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float UseWForMass;
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float Variation;
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float3 Gravity;
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float ForceDecayRate;
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}
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// struct LegacyPoint {
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// float3 Position;
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// float W;
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// };
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RWStructuredBuffer<LegacyPoint> ResultPoints : u0;
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[numthreads(64,1,1)]
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void main(uint3 i : SV_DispatchThreadID)
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{
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float3 variationOffset = hash31((float)(i.x%1234)/0.123 ) * Variation;
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float3 pos = ResultPoints[i.x].Position;
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//float3 noise = snoiseVec3((pos + variationOffset + Phase ) * Frequency)* (Amount/100) * AmountDistribution;
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float3 localPos = pos - Center;
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float distance = max(length(localPos), 0.02);
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float3 direction = localPos / distance;
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float effect = saturate(1-(distance - Radius) / RadiusFallOff)/100;
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float3 radialForce = direction / clamp( pow(distance, ForceDecayRate) , 0.02,1000) * RadialForce;
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ResultPoints[i.x].Position += (Gravity + radialForce) * effect;
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ResultPoints[i.x].W += 0;
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}
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