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use instancing to improve performance

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Brian Beck 2026-03-14 23:04:25 -07:00
parent 78e791f763
commit cd2819d28a
33 changed files with 482 additions and 319 deletions
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26
src/components/GenericShape.tsx
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@ -17,7 +17,7 @@ import {
BufferGeometry,
Group,
} from "three";
import type { AnimationAction } from "three";
import type { AnimationAction, Material } from "three";
import * as SkeletonUtils from "three/examples/jsm/utils/SkeletonUtils.js";
import { setupTexture } from "../textureUtils";
import { useAnisotropy } from "./useAnisotropy";
@ -84,19 +84,27 @@ type MaterialResult =
| SingleMaterial
| [MeshLambertMaterial, MeshLambertMaterial];
// Stable onBeforeCompile callbacks — using shared function references lets
// Three.js's program cache match by identity rather than toString().
const lambertBeforeCompile: Material["onBeforeCompile"] = (shader) => {
injectCustomFog(shader, globalFogUniforms);
injectShapeLighting(shader);
};
const basicBeforeCompile: Material["onBeforeCompile"] = (shader) => {
injectCustomFog(shader, globalFogUniforms);
};
/**
* Helper to apply volumetric fog and lighting multipliers to a material
* Helper to apply volumetric fog and lighting multipliers to a material.
*/
export function applyShapeShaderModifications(
mat: MeshBasicMaterial | MeshLambertMaterial,
): void {
mat.onBeforeCompile = (shader) => {
injectCustomFog(shader, globalFogUniforms);
// Only inject lighting for Lambert materials (Basic materials are unlit)
if (mat instanceof MeshLambertMaterial) {
injectShapeLighting(shader);
}
};
mat.onBeforeCompile =
mat instanceof MeshLambertMaterial
? lambertBeforeCompile
: basicBeforeCompile;
}
export function createMaterialFromFlags(