65 lines
1.7 KiB
C#
65 lines
1.7 KiB
C#
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#if GRIFFIN
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using UnityEngine;
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using System.Collections;
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using System.Collections.Generic;
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using Unity.Jobs;
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using Unity.Burst;
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using Unity.Collections;
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namespace Pinwheel.Griffin.Rendering
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{
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#if GRIFFIN_BURST
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[BurstCompile(CompileSynchronously = true)]
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#endif
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public struct GCullCellJob : IJobParallelFor
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{
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[ReadOnly]
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public NativeArray<GCellCullingParams> cullParams;
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[ReadOnly]
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public NativeArray<Plane> frustum;
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public Matrix4x4 normalizeToWorldMatrix;
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public int visibleValue;
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public int culledValue;
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[WriteOnly]
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public NativeArray<int> cullResults;
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public void Execute(int index)
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{
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GCellCullingParams param = cullParams[index];
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if (param.instanceCount == 0)
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{
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cullResults[index] = culledValue;
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return;
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}
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BoundingSphere b = new BoundingSphere();
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b.position = normalizeToWorldMatrix.MultiplyPoint(param.boundCenter);
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b.radius = normalizeToWorldMatrix.MultiplyVector(param.boundSize).x;
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if (!DoFrustumTest(frustum, b))
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{
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cullResults[index] = culledValue;
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}
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else
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{
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cullResults[index] = visibleValue;
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}
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}
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private bool DoFrustumTest(NativeArray<Plane> frustum, BoundingSphere bounds)
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{
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float d = 0;
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for (int i = 0; i < 6; ++i)
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{
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d = frustum[i].GetDistanceToPoint(bounds.position);
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if (d < -bounds.radius)
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{
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return false;
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}
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}
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return true;
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}
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}
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}
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#endif
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