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64 lines
1.8 KiB
64 lines
1.8 KiB
#pragma kernel CSMain
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#define NUM_THREADS 8
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RWStructuredBuffer<float4> KinectGridBuffer;
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RWStructuredBuffer<float3> VelocityBuffer;
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RWStructuredBuffer<float> TemperatureBuffer;
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RWStructuredBuffer<float> ObstacleBuffer;
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RWStructuredBuffer<float> DensityBuffer;
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float4 FluidDim;
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float timeStep;
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float temperatureAmount;
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float densityAmount;
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//float kinectAmount;
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[numthreads(NUM_THREADS, NUM_THREADS, NUM_THREADS)]
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void CSMain(uint3 id : SV_DispatchThreadID)
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{
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int idx = id.x + id.y*FluidDim.x + id.z*FluidDim.x*FluidDim.y;
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float4 value = KinectGridBuffer[idx];
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float3 vel = lerp(value.xyz, float3(0, 0, 0), 0.05f);
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float obs = lerp(value.w, 0, 0.2f);
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KinectGridBuffer[idx] = float4(vel, obs);
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//KinectGridBuffer[idx] = float4(1, 0, 0, 1);
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float kinectAmount = 30.0;
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float obstacle = 0;
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// boundary
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{
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if ((int)id.x - 1 < 0) obstacle = 1;
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if ((int)id.x + 1 > (int)FluidDim.x - 1) obstacle = 1;
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if ((int)id.y - 1 < 0) obstacle = 1;
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if ((int)id.y + 1 > (int)FluidDim.y - 1) obstacle = 1;
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if ((int)id.z - 1 < 0) obstacle = 1;
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if ((int)id.z + 1 > (int)FluidDim.z - 1) obstacle = 1;
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}
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//
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obstacle = max(obstacle, KinectGridBuffer[idx].w);
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obstacle = saturate(obstacle);
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//ObstacleBuffer[idx] = obstacle;
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float3 velocity = VelocityBuffer[idx];
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float density = DensityBuffer[idx];
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//if (id.y == 1) density += 10.0f * timeStep;
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density += KinectGridBuffer[idx].w * kinectAmount * densityAmount * timeStep * length(velocity);
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density = max(density, 0);
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//DensityBuffer[idx] = density;
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float temperature = TemperatureBuffer[idx];
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temperature += KinectGridBuffer[idx].w * kinectAmount * temperatureAmount * timeStep * length(velocity);
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temperature = max(temperature, 0);
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TemperatureBuffer[idx] = temperature;
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velocity += KinectGridBuffer[idx].xyz * kinectAmount;
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VelocityBuffer[idx] = velocity;
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} |