I just don't get Iray

2

Comments

  • vrba79vrba79 Posts: 1,548

    To me, Iray's most attractive feature, is the realtime preview window. You can see EXACTLY how lighting and materials will look, without having to sit through an entire render. 

  • Oso3DOso3D Posts: 15,097
    I like the ability to stop a render when it’s good enough rather than waiting for passes to complete.
  • vrba79vrba79 Posts: 1,548
    Oso3D said:
    I like the ability to stop a render when it’s good enough rather than waiting for passes to complete.

    That too. Because sometimes 200 passes is adequate.

  • kyoto kidkyoto kid Posts: 42,119

    ...and will that only be for GPU rendering?

  • DAZ_RawbDAZ_Rawb Posts: 817

     

    dracorn said:
    jag11 said:
    Taoz said:

    Noise or fireflies always will be part of the physics based renderers due to fact that are based on Monte Carlo integration algorithmn to solve the rendering equation which is the Fredholm integral equation. The Monte Carlo integration tries to solve the Fredholmn equation by randomly chosing samples, so, more samples means less noise, but also means more time. As a matter of fact NVIDIA is working in an optix denoiser that promises to speed rendering time by 12x. 

     

    12X?!  Who hoo!  How long will it take for Daz to upgrade their engine, I wonder.

    If only there was some way to figure out if the Daz Studio team have integrated the newest version of Iray. smiley

  • jag11jag11 Posts: 885
    DAZ_Rawb said:

     

    dracorn said:
    jag11 said:
    Taoz said:

    Noise or fireflies always will be part of the physics based renderers due to fact that are based on Monte Carlo integration algorithmn to solve the rendering equation which is the Fredholm integral equation. The Monte Carlo integration tries to solve the Fredholmn equation by randomly chosing samples, so, more samples means less noise, but also means more time. As a matter of fact NVIDIA is working in an optix denoiser that promises to speed rendering time by 12x. 

     

    12X?!  Who hoo!  How long will it take for Daz to upgrade their engine, I wonder.

    If only there was some way to figure out if the Daz Studio team have integrated the newest version of Iray. smiley

    Amazing! That was extremely fast.

    We are seeing the last days or weeks of the "Noise Filter Enable" property.

    Now I can't wait for the 4.11 public beta build. 

  • dracorndracorn Posts: 2,363

    Great!  Looking forward to it!

  • dracorndracorn Posts: 2,363
    vrba79 said:

    To me, Iray's most attractive feature, is the realtime preview window. You can see EXACTLY how lighting and materials will look, without having to sit through an entire render. 

    Yes!  Love that feature!

  • kyoto kidkyoto kid Posts: 42,119

    ...does't work well when you don't have a decent GPU card though as then it works off CPU and memory

  • vrba79vrba79 Posts: 1,548

    My only real laments on Iray are:

    1.) That its murder on my aging computer's hardware. The PC actually shuts down now, if I try to do much Iray stuff. The PC I'm getting with Tax refund money will be much beefier. So that's gonna be an non-issue.

    2.) The only cartoon shader for Iray, thus far, seems to be very lacking in terms of what it can do. 

     

  • hphoenixhphoenix Posts: 1,335
    vrba79 said:

    My only real laments on Iray are:

    2.) The only cartoon shader for Iray, thus far, seems to be very lacking in terms of what it can do. 

    Remember, IRAY is a Physcially-Based Renderer......cartoon shading is the complete opposite of this.  So it is only natural that the IRAY engine fights against doing things that way, and any shaders made in it are going to have trouble doing it well.  3DeLight is a Renderman-based renderer, which is NOT PBR.  It can DO very realistic PBR stuff with very complex shaders, but it isn't efficient at it.  But it can do non-realistic stuff easily.

    What we would really love to see is an update to 3DeLight that uses OpenCL/CUDA to accelerate rendering on GPUs.  That would make 3DL much more competitive against IRAY, and would allow non-realistic and realistic renders with it to be much faster. 

     

    What I really want to see DAZ do is implement IRAY's motion blur.  Several other packages that have IRAY renderers implement it, and it's one of the touted features ( https://www.nvidia.com/en-us/design-visualization/iray/features/ , toward the bottom of the page)........when will we see it in DAZ Studio?

  • dracorndracorn Posts: 2,363
    hphoenix said:
    vrba79 said:

    My only real laments on Iray are:

    2.) The only cartoon shader for Iray, thus far, seems to be very lacking in terms of what it can do. 

    Remember, IRAY is a Physcially-Based Renderer......cartoon shading is the complete opposite of this.  So it is only natural that the IRAY engine fights against doing things that way, and any shaders made in it are going to have trouble doing it well.  3DeLight is a Renderman-based renderer, which is NOT PBR.  It can DO very realistic PBR stuff with very complex shaders, but it isn't efficient at it.  But it can do non-realistic stuff easily.

    What we would really love to see is an update to 3DeLight that uses OpenCL/CUDA to accelerate rendering on GPUs.  That would make 3DL much more competitive against IRAY, and would allow non-realistic and realistic renders with it to be much faster. 

     

    What I really want to see DAZ do is implement IRAY's motion blur.  Several other packages that have IRAY renderers implement it, and it's one of the touted features ( https://www.nvidia.com/en-us/design-visualization/iray/features/ , toward the bottom of the page)........when will we see it in DAZ Studio?

    What do think of Toonycam Pro for 3DL? Is it worth a purchase for doing anime characters?
  • Oso3DOso3D Posts: 15,097

    I have a product coming out to help do artistic renders in Iray.

    The 3dl toon products will quickly and easily produce toon like images... but in my experience there are some annoying problems which at first seem small but are really hard to get rid of.

    Notably, most toon stuff uses Normals to figure out where to draw a line. The problem is that flat surfaces then tend to ‘flood’ with the outline when the edge is to the camera.

    LineRender9000 does a great job at fixing that with colorid outlining, but it’s a bit slower and less one step.

     

  • Serene NightSerene Night Posts: 17,704
    edited February 2018

    The thing I find difficult about Iray is the light strength. For me it isn’t intuitive. I end up just adding zeros until I get something I like but I think not being a photographer is a setback for me in  gauging this and some of the camera controls as I don’t feel it’s intuitive. I almost would prefer an interface that makes this easier to understand.

    I also like some of the cheats and the smooth quality of 3delight renders. In many cases I think Iray looks like a recolored photo. Dark edges with color filled inside. It looks odd to me sometimes and I think Iray puts too much black in images where it should be darker but not physically black as I think black is overly represented in a lot of images because that is how the shadows are interpreted.

    i totally acknowledge there are preferences and settings and tweaks but these are things I don’t like about Iray. Yes I know I can reduce blackness but at default settings I think black is overdone.

     

    Post edited by Serene Night on
  • kyoto kidkyoto kid Posts: 42,119
    edited February 2018
    hphoenix said:
    vrba79 said:

    My only real laments on Iray are:

    2.) The only cartoon shader for Iray, thus far, seems to be very lacking in terms of what it can do. 

    Remember, IRAY is a Physcially-Based Renderer......cartoon shading is the complete opposite of this.  So it is only natural that the IRAY engine fights against doing things that way, and any shaders made in it are going to have trouble doing it well.  3DeLight is a Renderman-based renderer, which is NOT PBR.  It can DO very realistic PBR stuff with very complex shaders, but it isn't efficient at it.  But it can do non-realistic stuff easily.

    What we would really love to see is an update to 3DeLight that uses OpenCL/CUDA to accelerate rendering on GPUs.  That would make 3DL much more competitive against IRAY, and would allow non-realistic and realistic renders with it to be much faster. 

     

    What I really want to see DAZ do is implement IRAY's motion blur.  Several other packages that have IRAY renderers implement it, and it's one of the touted features ( https://www.nvidia.com/en-us/design-visualization/iray/features/ , toward the bottom of the page)........when will we see it in DAZ Studio?

    ...I'd be happy with OpenCL acceleration, I can dust off those two HD 7950s I have in a box somewhere.  Although, with IBL Master, I'm already getting 3DL render times in the 9 - 12 min range for fairly involved scenes.

    Post edited by kyoto kid on
  • L'AdairL'Adair Posts: 9,479

    The thing I find difficult about Iray is the light strength. For me it isn’t intuitive. I end up just adding zeros until I get something I like but I think not being a photographer is a setback for me in  gauging this and some of the camera controls as I don’t feel it’s intuitive. I almost would prefer an interface that makes this easier to understand.

    I also like some of the cheats and the smooth quality of 3delight renders. In many cases I think Iray looks like a recolored photo. Dark edges with color filled inside. It looks odd to me sometimes and I think Iray puts too much black in images where it should be darker but not physically black as I think black is overly represented in a lot of images because that is how the shadows are interpreted.

    i totally acknowledge there are preferences and settings and tweaks but these are things I don’t like about Iray. Yes I know I can reduce blackness but at default settings I think black is overdone.

    I don't think being a photographer makes it any easier for me. I also just keep increasing the value until I like the results.

    One thing to keep in mind is our eyes compensate for lighting conditions: The pupils get smaller to let in less light for overly bright conditions and get larger to let in more light in dark conditions. When we light a scene using real world lighting, for example, two 60 watt bulbs, the Iray camera sees it without that compensation. To compensate with a camera, we increase the time the shutter is open, increase the ISO, or both. With Iray, you can get the same effect in Tone Mapping, by adjusting the Exposure setting, after unlocking the parameter! (it isn't necessary to use the camera-like settings, or know what they do with a real camera.)

    Or you can add light to the scene. (This is one of the things the ghost lights do really well, increasing the light in a room evenly, like your eyes would do by dilating the pupils.)

  • dracorndracorn Posts: 2,363
    I've been making use of Ghost Lights, Light Probes and Tenebroso to fix graininess.
  • dracorndracorn Posts: 2,363
    Oso3D said:

    I have a product coming out to help do artistic renders in Iray.

    The 3dl toon products will quickly and easily produce toon like images... but in my experience there are some annoying problems which at first seem small but are really hard to get rid of.

    Notably, most toon stuff uses Normals to figure out where to draw a line. The problem is that flat surfaces then tend to ‘flood’ with the outline when the edge is to the camera.

    LineRender9000 does a great job at fixing that with colorid outlining, but it’s a bit slower and less one step.

     

    That sounds interesting.
  • 3Diva3Diva Posts: 12,017
    Oso3D said:

    I have a product coming out to help do artistic renders in Iray.

    Yay! I look forward to seeing what you're working on, Will! :)

    If you need a beta tester, let me know. That's the kind of product I can get really excited over. lol :)

     

  • kyoto kidkyoto kid Posts: 42,119
    L'Adair said:

    The thing I find difficult about Iray is the light strength. For me it isn’t intuitive. I end up just adding zeros until I get something I like but I think not being a photographer is a setback for me in  gauging this and some of the camera controls as I don’t feel it’s intuitive. I almost would prefer an interface that makes this easier to understand.

    I also like some of the cheats and the smooth quality of 3delight renders. In many cases I think Iray looks like a recolored photo. Dark edges with color filled inside. It looks odd to me sometimes and I think Iray puts too much black in images where it should be darker but not physically black as I think black is overly represented in a lot of images because that is how the shadows are interpreted.

    i totally acknowledge there are preferences and settings and tweaks but these are things I don’t like about Iray. Yes I know I can reduce blackness but at default settings I think black is overdone.

    I don't think being a photographer makes it any easier for me. I also just keep increasing the value until I like the results.

    One thing to keep in mind is our eyes compensate for lighting conditions: The pupils get smaller to let in less light for overly bright conditions and get larger to let in more light in dark conditions. When we light a scene using real world lighting, for example, two 60 watt bulbs, the Iray camera sees it without that compensation. To compensate with a camera, we increase the time the shutter is open, increase the ISO, or both. With Iray, you can get the same effect in Tone Mapping, by adjusting the Exposure setting, after unlocking the parameter! (it isn't necessary to use the camera-like settings, or know what they do with a real camera.)

    Or you can add light to the scene. (This is one of the things the ghost lights do really well, increasing the light in a room evenly, like your eyes would do by dilating the pupils.)

    ...this is why I like and have little issue with 3DL lighting.  It works on a percentage scale just like theatrical lighting does.

  • Oso3DOso3D Posts: 15,097

    I’ve sometimes cranked 3dl lights to 1600%.

    In the end just have to set it high enough for whatever you are doing.

  • I love Iray, my only real complaint with the Daz implimentation is that they still haven't enabled motion blur which has been available for quite some time now.

  • CypherFOXCypherFOX Posts: 3,401

    Greetings,

    I love Iray, my only real complaint with the Daz implimentation is that they still haven't enabled motion blur which has been available for quite some time now.

    ^^^ THIS ^^^   QFT!

    I'm not bad at faking it using photoshop, but I'd love it to be built in, and I know it can be...

    --  Morgan

     

  • CypherFOX said:

    Greetings,

    I love Iray, my only real complaint with the Daz implimentation is that they still haven't enabled motion blur which has been available for quite some time now.

    ^^^ THIS ^^^   QFT!

    I'm not bad at faking it using photoshop, but I'd love it to be built in, and I know it can be...

    --  Morgan

    This would indeed be pretty freaking amazing.

  • kyoto kidkyoto kid Posts: 42,119
    Oso3D said:

    I’ve sometimes cranked 3dl lights to 1600%.

    In the end just have to set it high enough for whatever you are doing.

    ..but is that with Uber area lights?  I am referring to the standard/AoA Daz lights.

  • Oso3DOso3D Posts: 15,097

    Standard lights, not usually high, but often over 100%.

    They are just numbers and there’s nothing particularly hard about typing 150 rather than 50000.

  • DaWaterRatDaWaterRat Posts: 2,885
    edited February 2018
    CypherFOX said:

    Greetings,

    I love Iray, my only real complaint with the Daz implimentation is that they still haven't enabled motion blur which has been available for quite some time now.

    ^^^ THIS ^^^   QFT!

    I'm not bad at faking it using photoshop, but I'd love it to be built in, and I know it can be...

    --  Morgan

     

    Maybe this will help with motion blur?  or is there something about it that doesn't do what people want?  (I dont' have it)
    https://www.daz3d.com/motion-blur-for-iray

    Post edited by DaWaterRat on
  • CypherFOX said:

    Greetings,

    I love Iray, my only real complaint with the Daz implimentation is that they still haven't enabled motion blur which has been available for quite some time now.

    ^^^ THIS ^^^   QFT!

    I'm not bad at faking it using photoshop, but I'd love it to be built in, and I know it can be...

    --  Morgan

     

    Maybe this will help with motion blur?  or is there something about it that doesn't do what people want?  (I dont' have it)
    https://www.daz3d.com/motion-blur-for-iray

    It stacks exposures, doesn't really do "real" motion blur with nice interpolation. You'd have to use a crazy number of frames to make it look right.

  • kyoto kidkyoto kid Posts: 42,119
    Oso3D said:

    Standard lights, not usually high, but often over 100%.

    They are just numbers and there’s nothing particularly hard about typing 150 rather than 50000.

    ...with the Standard lights 100% is usually bright enough, going above will begin to wash details out.  I know that a Distant Light at 100% will make a proper "sun" with an ever slight yellow/white tint, or that a spotlight at 70% will create a certain mood or effect (again I used to work in theatrical lighting and the parameter range between Daz and stage lights are the same 0% is off 100% is full brightness). I don't have to keep fiddling around with it until it looks right for my needs.

    Now with Uber Area Lights yeah, I've had to often use ludicrous percentages like 1,600% or higher often spending a lot of time messing around with setting adjustments and test rendering over and over until they looked right (sort of like Photometric lights in Iray).

  • When I'm talking about motion blur, I'm talking about what's needed for animation.. frame to frame. Not the special effect. 3Delight has it, but Iray in DAZ Studio doesn't. The paid version of Iray in 3ds Max has it. That may be the difference. We're free and theirs is paid.

Sign In or Register to comment.