45 lines
1.2 KiB
Plaintext
45 lines
1.2 KiB
Plaintext
import Bounding;
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import Common;
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import Scene;
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import WaterCommon;
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[numthreads(1, 1, 1)]
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[shader("amplification")]
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void taskMain(
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uint threadID: SV_GroupThreadID,
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uint3 groupID: SV_GroupID
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) {
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WaterTile tile = pWaterMaterial.tiles[groupID.x];
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GroupMemoryBarrierWithGroupSync();
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AABB bounding;
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bounding.minCorner = float3(tile.location.x, tile.height, tile.location.y) * tile.extent;
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bounding.maxCorner = float3(tile.location.x + 1, tile.height, tile.location.y + 1) * tile.extent;
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float3 median = (bounding.minCorner + bounding.maxCorner) / 2;
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float distance = distance(median, pViewParams.cameraPos_WS.xyz);
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float tileDistance = distance / tile.extent;
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uint numMeshes = groupID.y + 1;
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if(numMeshes == 4 && (tileDistance > 8))
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{
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return;
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}
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if(numMeshes == 3)
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{
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return;
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}
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if(numMeshes == 2)
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{
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return;
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}
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if(numMeshes == 1)
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{
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return;
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}
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WaterPayload payload;
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payload.offset = bounding.minCorner;
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payload.extent = tile.extent / numMeshes;
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// todo: hardcoded max lod
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payload.numMeshes = numMeshes;
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DispatchMesh(numMeshes, numMeshes, 1, payload);
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}
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