Create Empty Cubemap

Create Empty Cubemap builds a blank six-face cubemap at a resolution you choose, with every face initialized to black. It's the "start from scratch" node of the pack - the entry point when you don't have an equirectangular panorama to convert, because every other cubemap in this pack comes from somewhere, and this one comes from a flat black square.

You'd reach for it in a few genuinely different situations. The manual workflow the README spells out: create empty, extract/insert faces as you process them individually, and assemble a cubemap from parts - useful when your six "faces" come from different sources (six separate renders, or an outpainting pass that only touches some directions). It's also the debugging workhorse: build an empty cubemap, insert one test face, and confirm your face pipeline works before committing to a full panorama. And it's the natural target for Insert Cubemap Face if you're building a 360° scene procedurally rather than from a single image.

One thing to know: an "empty" cubemap from this node is not truly empty. All six faces are initialized to black images, so Cubemap Info will report all faces set - which means it validates as complete while being visually blank. The distinction between "structurally complete" and "has content" is a recurring source of confusion with this pack, and this node is where it starts.

Inputs and outputs

• resolution - the size of each square face, default 1024, range 256–4096. Pick the same resolution you'll process faces at, because every face you insert must match it.

Output is a CUBEMAP of black faces at that resolution.

How to install it

ComfyUI Manager, search "DreamCube", install, restart. Or:

cd ComfyUI/custom_nodes
git clone https://github.com/cedarconnor/ComfyUI-DreamCube.git
cd ComfyUI-DreamCube
pip install -r requirements.txt

No models, no keys - it allocates a few NumPy arrays and returns them.

Gotchas

Resolution mismatch is the recurring trap: insert a face at the wrong size and you get a doesn't match cubemap resolution error, so settle on a resolution up front and keep every face you feed in at that size. And remember the black-faces thing - if you preview an "empty" cubemap you'll see six black squares and might think you did something wrong. You didn't; black is the pack's way of saying "nothing here yet." Fill real content via Insert Cubemap Face, then add depth with Apply Depth to Cubemap Face or Batch Cubemap Depth.