Blur in IRAY

Comments

• linvanchene Posts: 1,386

  January 2017 edited January 2017

  I do not know what kind of Motion Blur other Iray versions support.

  What I do know is that the current DAZ Studio SDK offers only limited motion blur options for other render engines:

  - - -

  Camera motion blur - the scene gets blurred if the camera moves - possible in DAZ Studio

  Object motion blur - Object movement is tracked relative to the hip bone-  in theory possible in DAZ Studio but useless for figures with morphs

  -> It seems what users may actually want is:

  Vertex motion blur - the motion blur from each vertex in the mesh is calculated.

  -> Not just the speed of the hip bone but the speed of each point on an object is tracked

  - - -

  Matrix example:

  The bullets flying would only require object motion blur.

  A figure doging the bullets would require Vertex motion blur to also track the movment of arms and legs etc.

  - - -

  In June 2016 a feature request for Vertex motion blur was added to the tracker. But that does not mean the request will be fullfilled.

  Request #219826

  - - -

  -> If you currently want to create images with advanced motion blur effects you may need to use a 3rd party render engine like Octane and then export to the OR standalone version which is capable of rendering vertex motion blur.

  -> Even if Iray would support Vertex motion blur DAZ Studio would probably first need to be updated with at least a basic physics engine to properly calculate the speed of moving vertices.

  - - -

  Post edited by linvanchene on January 2017
• Tobor Posts: 2,300

  January 2017 edited January 2017

  Iray internally supports camera motion blur, and has for some time using a programming interface. However, D|S does not yet expose that interface.

  http://www.migenius.com/doc/realityserver/latest/resources/general/iray/manual/concept/motion_blur.html

  Other products that use Iray demonstrate how the concept can be used:

  http://docs.autodesk.com/3DSMAX/16/ENU/3ds-Max-Help/index.html?url=files/GUID-25648CF2-A60F-450F-8880-8ADCD2EB13FF.htm,topicNumber=d30e531810

  For now, any motion blur effect will have to come from specially made props and textures (e.g. blurred propellers on an airplane), or some animated simulation, such as the product you mention.

  Post edited by Tobor on January 2017
• Toonces Posts: 919

  January 2017 edited January 2017

  Thanks! My goal is to create a brief fight animation that uses the blur technique in my FAVORITE fight scene (at 3:19), where Mr. Smith pounds Neo into the wall:

  

  It just looks so cool. I guess that's 'vertex motion blur'? It's almost more of an after image to me instead of a blur.

  DraagonStorm achieves it quite well. I did a quick test on a simple pose (attached [edit: see the black background attachment, ignore the one with the white background]). I love how the product shows the after images and fades them appropriately. I just need to find a way to get it to do it for a full animation about 90 frames long.

  I also have photoshop, and found that I can create a gif from an image sequence and show after images at each frame by making the previous layer(s) visible (perhaps I can also make them fade too).

  I'm probably pushing daz animation too hard, lol, but it just gets so close to what I want! :)

  

  

  blur1.png

  1132 x 741 - 363K

  

  

  MotionBlur.PNG

  645 x 608 - 195K

  Post edited by Toonces on January 2017