three.js: If enabling shadow maps for the renderer, setting alpha for the clear color no longer works

Question

I am initializing the renderer with alpha: true and setting clearcolor this way:

renderer.setClearColor(0xFFFFFF, 0.6);

When I turn on shadowmaps ( renderer.shadowMapEnabled = true; ), the alpha setting has no effect (it's as if I set it to 1 ).

I can get back the alpha background if I comment out the shadowMapEnabled line.

Has anyone else experienced this? I'm wondering if there is a workaround.

Answer 1

Fixed in the three.js r.72 dev branch.