THREE.JS / TEXTURES / PARTIAL UPDATE

Patch the surface.

A small source DataTexture is repainted and copied into a larger destination texture at explicit texel offsets. The destination remains one material map throughout.

Loading partial texturePreparing source and destination textures.
backend
WebGL2
source
—
destination
—
last offset
NOT COPIED
copies
0
source updates
0
frames
—
sample avg / p95
NOT RUN

Official checkerboard asset, random colors/offsets, exact page/pixel fidelity, copy-region driver inspection, device/compiler matrix, device-wide performance, native WebGPU parity, context-loss stress, and whole-example fidelity remain separate.