Why postprocessing is removed from camera?

Questions
,
1

Hello,
My setup: 1 scene, 2 cameras, firstcam has postprocessing effect, and renderTarget to a texture to be seen by the other main camera.
But firstcam postprocessing is not visible in the resulting renderTarget texture.

Roughly, what is working (without postprocessing, I followed Three.js Render Targets):

renderTarget = new THREE.WebGLRenderTarget(512,512)
renderer.setRenderTarget(renderTarget);
renderer.render(scene, firstcam)
renderer.setRenderTarget(null);

And what is NOT working (added among code above):

var custom = new ShaderPass(effect);
custom.renderToScreen = true;
firstcam.composer.addPass(custom);
firstcam.composer.render(renderer, scene, firstcam, 0.01);

When custom is applied to the main camera, it works fine though.
When applied to the camera used to render to target, it is ignored.

I read [Solved] How can I render a shader to a render target? - #7 by Nipson but I’d need more code to wrap my head around.

Would you please share a fiddle or codepen to understand how to use camera (or renderTarget texture) postprocessing as a texture?
Thank you very much

2

This is not the signature of EffectComposer.render(). It only has a single parameter deltaTime.

Besides, setting renderToScreen to true is not necessary anymore. The last pass in the pass chain is automatically rendered to screen.

3

Thank you very much for your reply @Mugen87 .

May I ask you for a link of an example of post-processed camera-to-texture seen by another camera?

4

TBH, I don’t not really understand what you are looking for but I hope the following example meets your requirements: three.js webgl - render-to-texture

1 Like
5

Thanks again @Mugen87
Eventually, my problem is similar to Postprocessing on a WebGLRenderTargets