Daylight + spherical background image - impossible?

[dinf]

Hi,

I try to convert a complete project into Octane project. Everything works fine so far, except the thing in the subject line: there is a spherical picture, projected on a sphere for the camera to see. It is not as a light in the scene. Like in original scene I use the daylight sun wich works well as long as there is no big sphere or sky object in the scene. But using the sphere with picture will turn off the daylight.
How can I get both to work?

[glimpse]

no way to use both now as..You can not have sun + environment =) or sun with environmen on the sphere without casting shadows.. so.. what is the best solution? =) I would actually render two images,. one with environment & one with sun.. one in DL(AO) and one in PT/PMC mode, then combine those in PS. AO does render fast as it is 'fake & don't need much computations, but done properlly it could enhance render quite a bit, so You are not only making a workaround in limitation, but actually pushing quality up =)

[dinf]

no way to use both now as..

*sigh* OK, thank you glimpse. I knew it. It is not only a picture but 9.000 frames. Not a problem for AE but double rendertimes.
Do you know if this will be changed some day?

[César]

Maybe you can try to bake the daylight to a panoramic 32 bits HDR render and assemble it with your environnement HDRI image in photoshop to make a new environnement texture ?

To bake the daylight : use a Panoramic Camera with fovx at 360 and fovy at 180, in Imager : set the camera response to Linear, vignetting to 0, all the rest by default, and make a render without mesh and save it to OpenEXR untonemapped.


Edit : Sorry, forget it, the result is no good because of the sampling of the sun who made a lot of hotpixels.

[dinf]

Thanks to your help cesar.
I now use the background pic on the sphere combined with an alphamap. That deletes the foto sky on the bitmap but adds the earth part on the ground and horizon so there's a bit environment for now.