Loading...
> >

Show Us Your Iray Renders. Part III

1…6791112…50

Comments

  • mjc1016mjc1016 Posts: 15,001
    edited December 1969

    Stefan47525 said:

    Glossy Layered Weight & Top Coat Weight: working in a linear PBR environment, the sum of all layers should be 1.0, not exceeding or be lower than this value.

    Glossy Color: should always be 1.0 - 1.0 - 1.0.
    The color of reflections is based on the wavelength of the light and materials used. Reflection of a special wavelength of our sun is always pure white, adjusted be the refractive abilities of a given material, and the coloring of the reflection changes with a different wavelength.
    If you change your lighting to a wavelength which will normally give you f.e. a blueish tinted reflection, your reflection coloring will be different from that. Say "good bye" to Einstein-Universe. ;-)

    Glossy Specular: is connected to the Refraction Index/IOR value of the material. The formula to calculate the linear sRGB value for a correct specular color is:
    Specular Color = (“Refractive Index” - 1)² / (“Refractive Index” + 1)²
    In case of a Refractive Index of 1.56 it's 0.047852 - 0.047852 - 0.047852

    And that right there sums up one of the biggest differences between a renderer based on 'real world' physics and one that isn't....

    Physically based/plausible ,materials will, unless they are actual emission surfaces, always have 'energy conservation'...in fact the calculations/algorithms the renderer uses assume this is true. If the layers add up to more than one, you are now talking about an energy source (emitter) and not a 'normal' surface.

  • KhoryKhory Posts: 3,854
    edited December 1969

    dubby30, first you apply the character you want to work with. The go to the iray uber and apply it (I don't think it even over writes the textures any more). I'll post the settings I used later if you need me to, but I used pretty much what was suggested pretty early on. I have promo renders running and I can't look for a bit.

  • Oso3DOso3D Posts: 15,100
    edited December 1969

    Dubby: at this point I'd recommend applying Iray female optimized skin, changing the skin surfaces to specular/glossy, and tweak from there.

    It will give you a very solid starting point.

  • SickleYieldSickleYield Posts: 7,649
    edited May 2015

    dubby30 said:
    SickleYield said:
    dubby30 said:
    Maybe i am doing a step wrong this is what happens when i load the SSS skin onto the figure with Iray view turned on i also added the SSS tattoo to show them too. Obviously i am doing something wrong or it would look like this.


    Daniel

    For her to be translucent the SSS is probably just too high. Turn the slider down. If you select templates 1, 2 and 3 in the Surfaces tab it will get all the relevant surfaces.

    Yes thats what i had to do in the shot i took above. The SSS materials were at 100% i had to drop them to like 1.5% But i guess my real question should be more basic to make sure i understand.

    Should i load the Danika preset. use the the surface editor to convert it all to Iray Uber base. Then apply the SSS materials...or should i load preset load SSS materials than convert to Iray Uber...or not even fiddle with iray opt and or iray uber shader?

    Here's what I did:

    Apply Danika and her SSS mat. (I turned off the nips/gens to go under the bikini here.)

    Select all materials. Apply Iray Uber Base.

    Select templates 1,2,3.

    Turn translucency down to .21 (I think that's actually the cause of the issue) and set its color to orange.

    Turn glossy layered weight up to 1.0. Set top coat weight to .30. The guys in previous posts are saying you can't do that with top coat weight and gloss but it's worked fine for me so far. I'm guessing conservation of energy does not apply with uniformity here.

    This is the result with the Tryst lingerie (which I did not bother converting). I lit it with the environment map at 2.0 and a spotlight at 1 million lumen (because I used Sunny 16 tone mapping settings). This did not fix the eyes but that's a lengthy subject that has been explored more than a little in this thread already. ;)

    DanikaTest.jpg
    800 x 1040 - 270K
    Post edited by SickleYield on
  • D.RobinsonD.Robinson Posts: 283
    edited December 1969

    timmins.william said:
    Dubby: at this point I'd recommend applying Iray female optimized skin, changing the skin surfaces to specular/glossy, and tweak from there.

    It will give you a very solid starting point.

    Thanks Timmons and Khory.

    My problem with this model skin Timmons is that if i apply the Iray Optimized skin as you suggest it loses some fine details on Danikas skin, namely the veiny portions of her skin as well as bump details on the face and arms. Also you can see by my render above ..not the example in DAZ but the test render using the Optimized skin makes the top of her legs look dirty and not pale and creamy like her torso.


    Daniel

  • D.RobinsonD.Robinson Posts: 283
    edited December 1969

    SickleYield said:
    dubby30 said:
    SickleYield said:
    dubby30 said:
    Maybe i am doing a step wrong this is what happens when i load the SSS skin onto the figure with Iray view turned on i also added the SSS tattoo to show them too. Obviously i am doing something wrong or it would look like this.


    Daniel

    For her to be translucent the SSS is probably just too high. Turn the slider down. If you select templates 1, 2 and 3 in the Surfaces tab it will get all the relevant surfaces.

    Yes thats what i had to do in the shot i took above. The SSS materials were at 100% i had to drop them to like 1.5% But i guess my real question should be more basic to make sure i understand.

    Should i load the Danika preset. use the the surface editor to convert it all to Iray Uber base. Then apply the SSS materials...or should i load preset load SSS materials than convert to Iray Uber...or not even fiddle with iray opt and or iray uber shader?

    Here's what I did:

    Apply Danika and her SSS mat. (I turned off the nips/gens to go under the bikini here.)

    Select all materials. Apply Iray Uber Base.

    Select templates 1,2,3.

    Turn translucency down to .21 (I think that's actually the cause of the issue) and set its color to orange.

    Turn glossy layered weight up to 1.0. Set top coat weight to .30. The guys in previous posts are saying you can't do that with top coat weight and gloss but it's worked fine for me so far. I'm guessing conservation of energy does not apply with uniformity here.

    This is the result with the Tryst lingerie (which I did not bother converting). I lit it with the environment map at 2.0 and a spotlight at 1 million lumen (because I used Sunny 16 tone mapping settings). This did not fix the eyes but that's a lengthy subject that has been explored more than a little in this thread already. ;)

    MVP for that Sickle thanks so much that gives me a good starting point to tinker with settings to get them to where i want I am greatful!

    Daniel

  • Oso3DOso3D Posts: 15,100
    edited December 1969

    I wonder if bump is being set to 0. Hmm.

    As for gloss/top weight, I think the effect of total is >1 is that the skin is extra light, which is not obvious unless other skins are in the scene.

  • SickleYieldSickleYield Posts: 7,649
    edited December 1969

    timmins.william said:
    I wonder if bump is being set to 0. Hmm.

    As for gloss/top weight, I think the effect of total is >1 is that the skin is extra light, which is not obvious unless other skins are in the scene.

    Iray likes bump settings higher than 3Delight in DS. I set mine at 1 or higher often (for mid-range rendering, lower for closeup) where 3Delight defaults can be as low as .03 or so.

  • IceCrMnIceCrMn Posts: 2,332
    edited December 1969

    I made an elf pirate using the MEC4D HDRI :)

    This is V4 wearing "Lassie of the Sea" by Pretty3D with the "Officers of the Sea2" textures by varnayrah (sharecg).The pistol is from "Piratess for Genesis 2 Female(s) "

    Elf_Pirate_MEC4D_HDRI_ambient.png
    1920 x 1080 - 433K
  • SickleYieldSickleYield Posts: 7,649
    edited December 1969

    timmins.william said:
    I wonder if bump is being set to 0. Hmm.

    As for gloss/top weight, I think the effect of total is >1 is that the skin is extra light, which is not obvious unless other skins are in the scene.

    Also: Given that the normally Iray makes 3Delight maps look overly saturated (because they're not meant to be albedo maps in the sense future maps made specifically for Iray will be), making it paler might not be a bad idea for upconversions.

  • KhoryKhory Posts: 3,854
    edited December 1969

    Here are the settings I used in the render I posted.

    Danika_Settings.jpg
    960 x 611 - 178K
  • DAZ_VinceDAZ_Vince Posts: 114
    edited May 2015

    I have been rendering images for documentation on caustics, here are a few gems that show off the effect well. I've also played with the new carbon composite MDL and car paint on the Ghost...

    The last image shows Bloom and carbon_composite.mdl quite well.

    ghost_bloom.jpg
    1920 x 1080 - 948K
    Ghost002.jpg
    1920 x 1080 - 897K
    Ghost001.jpg
    1920 x 1080 - 898K
    blue_crystals_002.jpg
    1800 x 1013 - 918K
    red_crystal_002.jpg
    1410 x 1031 - 720K
    Post edited by DAZ_Vince on
  • Oso3DOso3D Posts: 15,100
    edited December 1969

    SickleYield said:
    timmins.william said:
    I wonder if bump is being set to 0. Hmm.

    As for gloss/top weight, I think the effect of total is >1 is that the skin is extra light, which is not obvious unless other skins are in the scene.

    Also: Given that the normally Iray makes 3Delight maps look overly saturated (because they're not meant to be albedo maps in the sense future maps made specifically for Iray will be), making it paler might not be a bad idea for upconversions.

    Very good point.

  • SickleYieldSickleYield Posts: 7,649
    edited December 1969

    DAZ_Vince said:
    I have been rendering images for documentation on caustics, here are a few gems that show off the effect well. I've also played with the new carbon composite MDL and car paint on the Ghost...

    Gorgeous images. I can't wait to see the docs!

  • 8eos88eos8 Posts: 170
    edited May 2015

    Stefan47525 said:
    Glossy Layered Weight & Top Coat Weight: working in a linear PBR environment, the sum of all layers should be 1.0, not exceeding or be lower than this value.

    I could be wrong about this, but I think the shader automatically normalizes the weights you put in so that they sum to 1 in its internal calculations. That rule is for doing PBR in biased renderers that don't normalize their inputs.

    Also, the advantage of using the Metallicity/Roughness mode over Specular/Glossiness is that you don't have to figure out the specular values yourself, the physically correct ones will be calculated for you depending on the value of the Metallicity parameter (if it's 1, then it will use the base color to find the right value, while if it's 0, then it will use IOR).

    Post edited by 8eos8 on
  • abe01abe01 Posts: 29
    edited December 1969

    DAZ_Vince said:
    I have been rendering images for documentation on caustics, here are a few gems that show off the effect well. I've also played with the new carbon composite MDL and car paint on the Ghost...

    nice shaders....

    http://www.daz3d.com/gallery/users/104656

  • DAZ_VinceDAZ_Vince Posts: 114
    edited May 2015

    A couple more of the ghost in a less realistic environment, a bit more "showroom style" to setup materials...
    These renders all take under 2 minutes on a dual Quadro K6000 setup.

    I only updated a couple shaders:

    - Car Paint Sunburst ( turned off the metal flakes)
    - Carbon composite MDL (turned off the orange peel effect) Wing, bumper trim, exhaust and diffuser
    - Metal Magnesium alloy (wheels and rear light housing)
    - Glass Thin (all glass elements)
    - Metal Brushed (brake disks)
    - Metal Chrome (mirrors)
    - everything else is untouched...

    keonig_white_005.jpg
    1920 x 1080 - 818K
    keonig_white_004.png
    1920 x 1080 - 1M
    keonig_white_003.jpg
    1920 x 1080 - 748K
    keonig_white_002.jpg
    1920 x 1080 - 606K
    keonig_white_001.jpg
    1920 x 1080 - 590K
    Post edited by DAZ_Vince on
  • SickleYieldSickleYield Posts: 7,649
    edited December 1969

    I really like that iridescent effect! So that's all shader based and not from a map?

  • D.RobinsonD.Robinson Posts: 283
    edited May 2015

    Thanks everyone for advice. Here is a test of what i got so far. I used Sickles advice as a base. What i didnt do though is change the trans. color. I actually just use the base it was but made it a little lighter color i also made the trans weight even lower i want to retain her paleness...its a personal preference on this model.

    Also i lowered a bit the top coat weight to .22 cause in this light it was way too shiny...actually i think it should go a hair lower.


    Thanks everyone

    Daniel

    Testing_Danika1.jpg
    2000 x 1600 - 2M
    Post edited by D.Robinson on
  • D.RobinsonD.Robinson Posts: 283
    edited December 1969

    Khory said:
    Here are the settings I used in the render I posted.


    Thanks Khory i saved that image as a reference. Appreciate it.

  • DAZ_VinceDAZ_Vince Posts: 114
    edited December 1969

    SickleYield said:
    I really like that iridescent effect! So that's all shader based and not from a map?

    correct, all shader based on the carpaint. The carbon_composite.mdl does use a couple maps to create the weave effect.

  • Arnold CArnold C Posts: 740
    edited December 1969

    8eos8 said:

    I could be wrong about this, but I think the shader automatically normalizes the weights you put in so that they sum to 1 in its internal calculations. That rule is for doing PBR in biased renderers that don't normalize their inputs.

    Also, the advantage of using the Metallicity/Roughness mode over Specular/Glossiness is that you don't have to figure out the specular values yourself, the physically correct ones will be calculated for you depending on the value of the Metallicity parameter (if it's 1, then it will use the base color to find the right value, while if it's 0, then it will use IOR).

    Maybe. But if in doubt, following the rules will give you results you'd have to expect if it doesn't. I guess you mean the renderer, the shader defines how light will interact with this material. Question is, if DAZ's Iray 1.5 version normalizes. But even if it does, I could save it some work to do by not getting above or below 1.0. I'd bet it would save you some rendertime doing so.

    Nice, good to know. Thanks for this, didn't know that it will calculate it for itself using Metallicity/Roughness mode. But even then, using Specular/Glossines and the correct specular color would save the renderer from doing the calculations itself. Less calculations, less rendertime (depending on the amount of various materials in your scene). Getting the correct value will take less than 5 seconds if you put it in a prepared Excel- or Open Office-Calcsheet.

    See it like, if you clean up the dishes/floor/whatever for your wife/girlfriend/whatever will save her/him/whatever from doing that.
    Which results in that she/he/whatever have to work less and so has more time to be good to you. :-P

  • LyonessLyoness Posts: 1,640
    edited December 1969

    Stefan47525 said:
    Lyoness said:

    now here's my settings for shiny finger nails!!:
    (lots of defaults listed, but it's better to be thorough!!)
    [edited due to brevity}

    I'm not a real pro concerning PBR/PBS rendering, but this is what I've learned from literature about:

    Glossy Layered Weight & Top Coat Weight: working in a linear PBR environment, the sum of all layers should be 1.0, not exceeding or be lower than this value.

    Glossy Color: should always be 1.0 - 1.0 - 1.0.
    The color of reflections is based on the wavelength of the light and materials used. Reflection of a special wavelength of our sun is always pure white, adjusted be the refractive abilities of a given material, and the coloring of the reflection changes with a different wavelength.
    If you change your lighting to a wavelength which will normally give you f.e. a blueish tinted reflection, your reflection coloring will be different from that. Say "good bye" to Einstein-Universe. ;-)

    Glossy Specular: is connected to the Refraction Index/IOR value of the material. The formula to calculate the linear sRGB value for a correct specular color is:
    Specular Color = (“Refractive Index” - 1)² / (“Refractive Index” + 1)²
    In case of a Refractive Index of 1.56 it's 0.047852 - 0.047852 - 0.047852

    Top Coat Thin Film IOR: as long as you don't change your value of your "Top Coat Thin Film" to anything else than 0.00, changing the IOR is a waste of time since there isn't any thin film at all.

    Glossy Color Effect: Scatter & Transmit: as I understand SSS, since you shut yours down, "Scatter Only" would be more correct, since there's nothing the renderer could "transmit to". May not be a great thing, but I guess it will save it some uneccessary calculations.
    Be good to your renderer and your renderer will be good to you. :)

    This is SOOO helpful!!
    now I can go back and update all my mouth/teeth shaders too!
    thank you!!!!!
    I'll repost updates later!!

  • MEC4DMEC4D Posts: 5,249
    edited December 1969

    There is a lot confusion lately with all the info
    Maybe from now we indicate what Base mixer we used and for that the values
    what is good for Specular/Glossiness base mixer would be wrong for the other, that include the albedo color and specular values

    That why under Specular/Glossiness the Glossy Specular is always whiten 1.1.1 on 1 value, including the weighted value 1, but what change is the Specular color only (chromatic for non metals)

    so things in real world can be so or so.. but the calibration of the both shader mixers can be slightly different
    I am preparing charts for both shader base mixers so that will be much easy for people to understand and easy to test stuff out .


    mjc1016 said:
    Stefan47525 said:

    Glossy Layered Weight & Top Coat Weight: working in a linear PBR environment, the sum of all layers should be 1.0, not exceeding or be lower than this value.

    Glossy Color: should always be 1.0 - 1.0 - 1.0.
    The color of reflections is based on the wavelength of the light and materials used. Reflection of a special wavelength of our sun is always pure white, adjusted be the refractive abilities of a given material, and the coloring of the reflection changes with a different wavelength.
    If you change your lighting to a wavelength which will normally give you f.e. a blueish tinted reflection, your reflection coloring will be different from that. Say "good bye" to Einstein-Universe. ;-)

    Glossy Specular: is connected to the Refraction Index/IOR value of the material. The formula to calculate the linear sRGB value for a correct specular color is:
    Specular Color = (“Refractive Index” - 1)² / (“Refractive Index” + 1)²
    In case of a Refractive Index of 1.56 it's 0.047852 - 0.047852 - 0.047852

    And that right there sums up one of the biggest differences between a renderer based on 'real world' physics and one that isn't....

    Physically based/plausible ,materials will, unless they are actual emission surfaces, always have 'energy conservation'...in fact the calculations/algorithms the renderer uses assume this is true. If the layers add up to more than one, you are now talking about an energy source (emitter) and not a 'normal' surface.

  • MEC4DMEC4D Posts: 5,249
    edited December 1969

    Beautiful done Vince, the best car surfaces so far I saw .. I love how it react to the different light conditions ..just perfect in my eye


    DAZ_Vince said:
    I have been rendering images for documentation on caustics, here are a few gems that show off the effect well. I've also played with the new carbon composite MDL and car paint on the Ghost...

    The last image shows Bloom and carbon_composite.mdl quite well.

  • kyoto kidkyoto kid Posts: 42,159
    edited May 2015

    ...moved to the correct thread.

    Post edited by kyoto kid on
  • MEC4DMEC4D Posts: 5,249
    edited December 1969

    It may be as a lot is loaded and the HD is too slow to write down the info and you get No responding , mean the program need more time to write it down .
    After the last build I load everything so much faster also real time rendering when rotating the scene , the frame speed in view port real time rendering with Iray before was 9 now is 22 as I overclocking my graphic card for rendering time lol

    The problem is that most software put temporary files on the SSD main boot drive , I had to switch to my other HD with Zbrush as it keeping crashing due to low space as it take all from my boot drive while working, now everything is fine.
    I wish I know how to change the temporary files location it in DAZ studio


    Kyoto Kid said:
    ...did a bit of system maintenance last night as I noticed the free space on the C drive was pretty low and figured that may have been the cause of the sluggishness I was seeing yesterday. After Win 7 ran optimisation and cleanup this morning gained over 50GB of free space on the main boot drive.(250GB). Have over 660 GB free on the 1TB D: runtime drive.

    So started up 4.8, and loaded the scene I was working on yesterday. Still got the white to black window with the "Not Responding" message. Launched a test render and notice that the HD light was constantly on as if the programme was performing a swap operation . Received two more "not responding" messages with the render window turning white. The render timer froze at 9 min 35 sec for nearly five minutes before resuming. When I moved the mouse to put the cursor on part of the desktop outside the Application window, I would get the "wait" cursor which meant the Daz programme pretty much froze the entire system.

    After nearly seventeen and a half minutes, finally the image appeared in the render window. Cancelled the render as character's skin, hair and eyes looked all wrong. After doing so, a second render history pane appeared over the first, a second minimised render settings pane appeard below the application window (I leave the render settings "undocked as I cannot seem to get it to dock properly to either sidebar and am tired of getting that "postage stamp" sized pane every time I open it).

    After I was able to finally close the render window, I couldn't do anything else without incurring yet another "whiteout" and "Not Responding" message. Finally was able to delete the character from the scene (have a backup of her). All throughout this time, the Hard Drive light was on steady as if again, the programme was swapping to it rather than using the CPU and system memory for the operations.

    In all, the entire sequence took nearly 50 minutes from loading the scene to closing it. much of the time with the programme indicating it was "Not Responding".

  • MusicplayerMusicplayer Posts: 515
    edited December 1969

    dubby30 said:
    Thanks everyone for advice. Here is a test of what i got so far. I used Sickles advice as a base. What i didnt do though is change the trans. color. I actually just use the base it was but made it a little lighter color i also made the trans weight even lower i want to retain her paleness...its a personal preference on this model.

    Also i lowered a bit the top coat weight to .22 cause in this light it was way too shiny...actually i think it should go a hair lower.


    Thanks everyone

    Daniel

    A good start Daniel, still a lot of us experimenting with skin textures etc, and lots of advice to try out from these threads. All part of the Iray rendering fun ;-)

    Cheers :-)

  • kyoto kidkyoto kid Posts: 42,159
    edited December 1969

    MEC4D said:
    It may be as a lot is loaded and the HD is too slow to write down the info and you get No responding , mean the program need more time to write it down .
    After the last build I load everything so much faster also real time rendering when rotating the scene , the frame speed in view port real time rendering with Iray before was 9 now is 22 as I overclocking my graphic card for rendering time lol

    The problem is that most software put temporary files on the SSD main boot drive , I had to switch to my other HD with Zbrush as it keeping crashing due to low space as it take all from my boot drive while working, now everything is fine.
    I wish I know how to change the temporary files location it in DAZ studio


    Kyoto Kid said:
    ...did a bit of system maintenance last night as I noticed the free space on the C drive was pretty low and figured that may have been the cause of the sluggishness I was seeing yesterday. After Win 7 ran optimisation and cleanup this morning gained over 50GB of free space on the main boot drive.(250GB). Have over 660 GB free on the 1TB D: runtime drive.

    So started up 4.8, and loaded the scene I was working on yesterday. Still got the white to black window with the "Not Responding" message. Launched a test render and notice that the HD light was constantly on as if the programme was performing a swap operation . Received two more "not responding" messages with the render window turning white. The render timer froze at 9 min 35 sec for nearly five minutes before resuming. When I moved the mouse to put the cursor on part of the desktop outside the Application window, I would get the "wait" cursor which meant the Daz programme pretty much froze the entire system.

    After nearly seventeen and a half minutes, finally the image appeared in the render window. Cancelled the render as character's skin, hair and eyes looked all wrong. After doing so, a second render history pane appeared over the first, a second minimised render settings pane appeard below the application window (I leave the render settings "undocked as I cannot seem to get it to dock properly to either sidebar and am tired of getting that "postage stamp" sized pane every time I open it).

    After I was able to finally close the render window, I couldn't do anything else without incurring yet another "whiteout" and "Not Responding" message. Finally was able to delete the character from the scene (have a backup of her). All throughout this time, the Hard Drive light was on steady as if again, the programme was swapping to it rather than using the CPU and system memory for the operations.

    In all, the entire sequence took nearly 50 minutes from loading the scene to closing it. much of the time with the programme indicating it was "Not Responding".


    ...ahh messed up, this was supposed to go on the Beta thread not here. Didn't have my morning dose of caffeine yet.
  • MEC4DMEC4D Posts: 5,249
    edited December 1969

    Lol no problem at last Iray related ..

    Kyoto Kid said:

    ...ahh messed up, this was supposed to go on the Beta thread not here. Didn't have my morning dose of caffeine yet.
This discussion has been closed.