CubeTexture orientation

In my app, I would like to rotate the CubeTexture that defines the scene background and the environment map reflections by 180° along the vertical y-axis. My rotation is defined by the VRML and X3D specifications about the background fields.

I tried to modify several parameters like the mapping, flipY and rotation Texture fields. However I didn’t found any good way to do so.

• Is there some obvious way to do so that I missed?
• Any chance to see this coming in three.js?
• If I would like to implement it, what parameters would you like to see (for example Texture.flipX and CubeTexture.flipZ)? Would you be interested in this feature?

[mrdoob]

You mean being able to rotate scene.background? If so… yes, definitely interested.

We probably need a new API though…

scene.background = new THREE.Background( cubeTexture );`
scene.background.rotation.y = Math.PI / 2;

[Mugen87]

@mrdoob I think we should implement this feature. There is another request in the forum:

https://discourse.threejs.org/t/rotate-a-scenes-background-skybox-texture/12199

I doubt that a single additional matrix/vector multiplication per fragment will noticeably affect the performance.