Three.js render to texture

问题

I'm fighting some unexpected behavior.

It seems that i can't get anything to render to target.

renderer.render( scene , cam , renderTarget , false ); // does not work, empty target

either one of these though, will fill the target, this one though renders to frame buffer once

renderer.render( scene , cam , renderTarget , false );
renderer.render( scene , cam ); //this somehow causes the renderTarget to be filled

or this:

renderer.setRenderTarget( renderTarget );
renderer.render( scene , cam , renderTarget , false );
renderer.setRenderTarget( null );

What am i doing wrong?

回答1:

This is how I render to a THREE.WebGLRenderTarget:

var pickingScene = new THREE.Scene();
var pickingTexture = new THREE.WebGLRenderTarget(renderer.domElement.clientWidth, renderer.domElement.clientHeight);
pickingTexture.texture.minFilter = THREE.LinearFilter;

renderer.render(pickingScene, camera, pickingTexture);

来源：https://stackoverflow.com/questions/38583219/three-js-render-to-texture