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[ts][threejs] Prefill normals at construction; they are always constant and perpendicular. See #2952.

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This commit is contained in:
Davide Tantillo 2025-10-20 17:31:05 +02:00
parent 2a87e965c2
commit 4bd297fb4e
1 changed files with 25 additions and 15 deletions
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40
spine-ts/spine-threejs/src/MeshBatcher.ts
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@ -57,19 +57,35 @@ export class MeshBatcher extends THREE.Mesh {
this.vertexSize += 3;
}
let vertices = this.vertices = new Float32Array(maxVertices * this.vertexSize);
let indices = this.indices = new Uint16Array(maxVertices * 3);
let geo = new THREE.BufferGeometry();
let vertexBuffer = this.vertexBuffer = new THREE.InterleavedBuffer(vertices, this.vertexSize);
vertexBuffer.usage = WebGLRenderingContext.DYNAMIC_DRAW;
this.vertices = new Float32Array(maxVertices * this.vertexSize);
this.indices = new Uint16Array(maxVertices * 3);
const normals = new Float32Array(maxVertices * 3);
for (let i = 0; i < maxVertices * 3; i += 3) {
normals[i] = 0;
normals[i + 1] = 0;
normals[i + 2] = -1;
}
const vertexBuffer = new THREE.InterleavedBuffer(this.vertices, this.vertexSize)
this.vertexBuffer = vertexBuffer;
this.vertexBuffer.usage = WebGLRenderingContext.DYNAMIC_DRAW;
const geo = new THREE.BufferGeometry();
geo.setAttribute("position", new THREE.InterleavedBufferAttribute(vertexBuffer, 3, 0, false));
geo.setAttribute("color", new THREE.InterleavedBufferAttribute(vertexBuffer, 4, 3, false));
geo.setAttribute("uv", new THREE.InterleavedBufferAttribute(vertexBuffer, 2, 7, false));
if (twoColorTint) {
if (twoColorTint)
geo.setAttribute("darkcolor", new THREE.InterleavedBufferAttribute(vertexBuffer, 3, 9, false));
}
geo.setIndex(new THREE.BufferAttribute(indices, 1));
geo.getIndex()!.usage = WebGLRenderingContext.DYNAMIC_DRAW;
const normalBuffer = new THREE.BufferAttribute(normals, 3);
normalBuffer.usage = WebGLRenderingContext.STATIC_DRAW;
geo.setAttribute("normal", normalBuffer);
const indexBuffer = new THREE.BufferAttribute(this.indices, 1);
indexBuffer.usage = WebGLRenderingContext.DYNAMIC_DRAW;
geo.setIndex(indexBuffer);
geo.drawRange.start = 0;
geo.drawRange.count = 0;
this.geometry = geo;
@ -167,7 +183,6 @@ export class MeshBatcher extends THREE.Mesh {
this.indicesLength += indicesLength;
}
private verticesMaxLength = -1;
end () {
this.vertexBuffer.needsUpdate = this.verticesLength > 0;
this.vertexBuffer.addUpdateRange(0, this.verticesLength);
@ -179,11 +194,6 @@ export class MeshBatcher extends THREE.Mesh {
index.addUpdateRange(0, this.indicesLength);
geo.drawRange.start = 0;
geo.drawRange.count = this.indicesLength;
if (this.verticesMaxLength < this.verticesLength) {
this.verticesMaxLength = this.verticesLength;
geo.computeVertexNormals();
}
}
addMaterialGroup (indicesLength: number, materialGroup: number) {