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Update terrain mesh generation to use shader layer count and refactor layer weight attribute setting

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This commit is contained in:
Victor Giers
2026-05-13 00:45:07 +02:00
parent 831f867ba0
commit 354a0f499b
1 changed files with 7 additions and 15 deletions
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22
src/geometry/terrain-mesh.ts
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@@ -227,7 +227,7 @@ export function buildTerrainDerivedMeshData(
const vertexCount = terrain.sampleCountX * terrain.sampleCountZ;
const positions = new Float32Array(vertexCount * 3);
const uvs = new Float32Array(vertexCount * 2);
const layerWeights = new Float32Array(vertexCount * TERRAIN_LAYER_COUNT);
const layerWeights = new Float32Array(vertexCount * TERRAIN_SHADER_LAYER_COUNT);
const foliageMaskWeights = new Float32Array(vertexCount);
const foliageMask =
options.foliageMaskLayerId === undefined ||
@@ -268,13 +268,13 @@ export function buildTerrainDerivedMeshData(
for (
let layerIndex = 0;
layerIndex < TERRAIN_LAYER_COUNT;
layerIndex < TERRAIN_SHADER_LAYER_COUNT;
layerIndex += 1
) {
layerWeights[layerWeightOffset + layerIndex] =
sampleLayerWeights[layerIndex];
sampleLayerWeights[layerIndex] ?? 0;
}
layerWeightOffset += TERRAIN_LAYER_COUNT;
layerWeightOffset += TERRAIN_SHADER_LAYER_COUNT;
foliageMaskWeights[foliageMaskWeightOffset] =
options.foliageBlockerMask === true
? getTerrainFoliageBlockerMaskValueAtSample(
@@ -327,10 +327,7 @@ export function buildTerrainDerivedMeshData(
const geometry = new BufferGeometry();
geometry.setAttribute("position", new BufferAttribute(positions, 3));
geometry.setAttribute("uv", new BufferAttribute(uvs, 2));
geometry.setAttribute(
"terrainLayerWeights",
new BufferAttribute(layerWeights, TERRAIN_LAYER_COUNT)
);
setTerrainLayerWeightAttributes(geometry, layerWeights);
geometry.setAttribute(
"terrainFoliageMask",
new BufferAttribute(foliageMaskWeights, 1)
@@ -446,9 +443,7 @@ function pushTerrainLodVertex(
positions.push(localX, localY, localZ);
uvs.push(terrain.position.x + localX, terrain.position.z + localZ);
for (const weight of sampleLayerWeights) {
layerWeights.push(weight);
}
pushPaddedTerrainLayerWeights(layerWeights, sampleLayerWeights);
const foliageMask =
options.foliageMaskLayerId === undefined ||
@@ -680,10 +675,7 @@ function buildTerrainLodLevelMeshData(
geometry.setAttribute("position", new BufferAttribute(typedPositions, 3));
geometry.setAttribute("uv", new BufferAttribute(typedUvs, 2));
geometry.setAttribute(
"terrainLayerWeights",
new BufferAttribute(typedLayerWeights, TERRAIN_LAYER_COUNT)
);
setTerrainLayerWeightAttributes(geometry, typedLayerWeights);
geometry.setAttribute(
"terrainFoliageMask",
new BufferAttribute(typedFoliageMaskWeights, 1)