New Beta Test Version

Replies to This Discussion

Permalink Reply by Render Plus on December 9, 2010 at 3:48pm

That would take more work - reflections, transparency etc. don't work well with this idea.

 

For us the big value was fabric panels and chair colors in office renderings.

 

It should work well for changing the fabric panel colors, or the cabinet and desk colros in this rendering.

 

Boothy said:

One of the things I thought it might be good for was to tweak backgrounds - unfortunately because it only affects visible rendered pixel colour of rendered image (unlike the tonal basis of light channels) it does not allow change of colour behind other materials in the same way a self glow channel does - in the image below I was using my test model originally to change self glow of background but keep relections on glass windows - with material channels this cannot work.

 

Boothy

• ▶ Reply

Permalink Reply by Richcat on December 9, 2010 at 3:52pm

AL

Planner HDRI backgrounds works great.

Coverted well known image in my pictures jpg microsoft run sun set to hdri, and set as background. Tool under background tab.

Render out and it gives extra channel "8" to control hdri backgroung illumination
To scale background had to turn off "manual process background images"

 

• ▶ Reply

Permalink Reply by Render Plus on December 9, 2010 at 4:09pm

Rich,

Are your first two images both made with Planar HDRi?

 

I'll fix the scale problem.

 

The extra channel is only supposed to work in Path tracer mode. (until Roy has a chance to fix it for the standard renderer.)

• ▶ Reply

Permalink Reply by Richcat on December 9, 2010 at 4:12pm

Al Luv the updates, big step forward.

 

Just noticed there brightness slider is not really related to tone operator only goes up to 100 - whilst tone whilst goes a lot higher - contrast addition is really great, also Roy has released new image editor, which you need to update as the new nxtimages that you can now save from this beta version of IRender can only be changed with this.

• ▶ Reply

Permalink Reply by Richcat on December 9, 2010 at 4:15pm

Al

Yes first two images are made with Planar Hdri, made with IRender option on Background tab, and rendered with path trace, very rarley use standard method- Hadn't tried that.

 

Just noticed you can't really make out on jpg's the additional hdri background slider channel, at the bottom

• ▶ Reply

Permalink Reply by Boothy on December 10, 2010 at 7:55am

Al Hart said:

to open multiple render windows, you can run Irenderbatch.exe manually, and select the default file.

or you can start the second rendering from a new instance of SketchUp.

If you want to rerender a window, the windows will hace to have different batch file locations.

Thanks for that - its just a shane we cannot `preserve` already rendered image in render dialog for future use rather than having to rerender - I know this must be difficult to achieve or you would have probably implemented by now !

Thanks

Boothy

• ▶ Reply

Permalink Reply by Render Plus on December 10, 2010 at 7:59am

"its just a shane we cannot `preserve` already rendered image in render dialog for future use rather than having to rerender - I know this must be difficult to achieve or you would have probably implemented by now !"

 

We will take a shot at this - we just need to save the current image with material numbers -much like the nXtImageEditor format - and then have a way to reload it.

• ▶ Reply

Permalink Reply by Boothy on December 10, 2010 at 9:10am

That would be great !

If we could save and reload into the render window you could effectively do away with image editor - it would be much more versatile as it would inlude all post render options including your recent advances

 

Thanks for listening again !

 

Boothy

Al Hart said:

"its just a shane we cannot `preserve` already rendered image in render dialog for future use rather than having to rerender - I know this must be difficult to achieve or you would have probably implemented by now !"

 

We will take a shot at this - we just need to save the current image with material numbers -much like the nXtImageEditor format - and then have a way to reload it.

• ▶ Reply

Permalink Reply by Boothy on December 10, 2010 at 9:15am

I have not yet tried HDRI backgrounds yet - but will try later - I will probably not implement them commercially in my work until they are included in standard renderer.

 

Richcat are there any useful resource sites for the HDRI background images ? is it just a matter of producing a HDR image in photoshop ?

Thanks

Boothy

• ▶ Reply

Permalink Reply by Render Plus on December 10, 2010 at 9:23am

You can convert jpg's to her with the button on the backgrounds tab. However to make a good one you should take two or three photos with over and under exposure and combine them. When someone finds some, let us know.

• ▶ Reply

Permalink Reply by Boothy on December 11, 2010 at 10:48am

Hi Al\Richcat

 

Cannot get a HDR image to work in background - I can get jpeg to work but channel 8 is still greyed out (with pathtracer in latest beta image editor) I probably need some idiot guide to where I am going wrong. Anyway please find attached sample HDR image which I created from 3  auto bracketed images I had taken and merged in photoshop

 

Boothy

Attachments:

• samplehdr1.zip, 2.1 MB

• ▶ Reply

Permalink Reply by Richcat on December 11, 2010 at 6:18pm

Hi Boothy

Must gave got It working more by luck than judgement, after playing a little more tonight.

Sorry not replied earlier - just got back from Works do from yesterday down on south coast- bit tired.

Anyway.

On background tab, create your hdri background from a jpg, or choose one you have already.

I see you have already done a bracket one. (I like)

Browse for a chosen hdri on the same background tab, and select it. I choose yours.

On Lights tab make sure you have all "8" light channels working.

Check that the hdri channel " channel 8" ( which I remember at first had a blank label, but appeared when I went back form render and imported changes) has appeared and it has a value of say 1- by default it seems to be set as 0.

It seemed like something triggers the label and channel 8 to appear which I believe is setting up the background setting correctly.

Note to scale background etc you have to have "Manually process background images" de-selected you can only get to this in render window clicking blue render icon. Then make sure you open up render settings to import changes and save or it tends to revert back. Al's note this already and will provide a fix.

This may also have something to do with the the background channel not appearing or working, as I have made so many changes playing around its sometimes hard to rememeber the sequence and when the channel first appeared.

Then it a case of balancing the channels. My first tries the background appear very very dark, may because of default setting?

 

• ▶ Reply

▶ Reply to Discussion

• ‹ Previous
• 1
• 2
• 3
• Next ›
• Page