Sky question

Wed Oct 10, 2012 3:20 am

Hey folks, what would be a suggestion for sky.....and where could I find some high quality files? This is an old 727 I built in Lightwave (real bad geometry) that I am using for testing....once I rebuild it I will repost.

Wed Oct 10, 2012 3:56 am

If you're talking about the physical sky, then I would just suggest you to change some random values on it, play with it till you have a good result, as you need the sun to light your model; HDRI maps don't support Sun at the same time yet.

Wed Oct 10, 2012 5:00 am

I was afraid of that....needed some clouds.....will have to wait until Octane supports HDRI and sun.

Wed Oct 10, 2012 6:59 am

render with alpha and put your sky.

Wed Oct 10, 2012 8:47 am

did yesterday

Wed Oct 10, 2012 11:47 am

gabrielefx wrote:render with alpha and put your sky.

Ok, I think this is what I need....under the Mesh Preveiw Kernel....I enabled the alpha channel and the sky disappears...so far so good. But when I attatch a png image the error I get says no alpha channel in image. What kind of image would need to be connected to the alpha channel pin in the mesh preview kernel?

Wed Oct 10, 2012 11:48 am

Elvissuperstar007 wrote:did yesterday

Very nice work, how did you get the sky in the back? I think I am almost there just not sure what type of image is required yet.

Wed Oct 10, 2012 5:18 pm

Nice image ! I think that the best way for now is to use the Daylight system to create specular effects and get a shadow on the ground in the wanted direction, and render with alpha (transparent background).

Render again (still with transparent background) with an HDR or LDR image as environment if you want to get some sky/cloud reflections on the airplane.

Composite the two layers and adjust the mix amount to get the desired effect.

Add a background photo with the sun in the same direction as the sun direction in the Daylight system.

Wed Oct 10, 2012 7:33 pm

ROUBAL wrote:Nice image ! I think that the best way for now is to use the Daylight system to create specular effects and get a shadow on the ground in the wanted direction, and render with alpha (transparent background).

Render again (still with transparent background) with an HDR or LDR image as environment if you want to get some sky/cloud reflections on the airplane.

Composite the two layers and adjust the mix amount to get the desired effect.

Add a background photo with the sun in the same direction as the sun direction in the Daylight system.

Great info! How do you add the backround photo, is that done in Octane or outside of Octane in Gimp or Photoshop?

Wed Oct 10, 2012 7:45 pm

boeing727223 wrote:
ROUBAL wrote:Nice image ! I think that the best way for now is to use the Daylight system to create specular effects and get a shadow on the ground in the wanted direction, and render with alpha (transparent background).

Render again (still with transparent background) with an HDR or LDR image as environment if you want to get some sky/cloud reflections on the airplane.

Composite the two layers and adjust the mix amount to get the desired effect.

Add a background photo with the sun in the same direction as the sun direction in the Daylight system.

Great info! How do you add the backround photo, is that done in Octane or outside of Octane in Gimp or Photoshop?

That needs to be done outside of Octane.