Forums Technical subjects Patchwork 3D R&D and Roadmap Patchwork 3D 2022 : Real time sun soft shadows for Iray

Author Posts

Romaric BOUNY
Keymaster

Hi,

From next version, it will be possible to get Soft Shadows with Real Time Sun in Iray.
This has been done by reimplementing Real Time Sun by an Area light.
Changing Sun Distance and Sun Diameter will result to smoother or sharper shadows.


Iray Real Time Sun parameters available in Iray Settings Editor > Sun and Sky

Two modes are available :
– “Use opengl parameters” adjust parameters to be as close as possible to opengl rendering
– “Use custom parameters” let customize shadows for Iray


OpenGL parameters are available in Real Time Sun Editor

Now let’s compare rendering :

With OpenGL parameters

On the left : OpenGl ; on the right : Iray

Sharp shadows (“None” value for “Shadow Smoothness” parameter)

Smooth shadows (“Large” value for “Shadow Smoothness” parameter)


With custom parameters

Distance = 100 ; Radius = 1                        Distance = 100 ; Radius = 10                    Distance = 20 ; Radius = 5
  

 

What do you think about it ?

  • This topic was modified 4 months, 3 weeks ago by webmaster. Reason: try correct heading
  • This topic was modified 4 months, 3 weeks ago by webmaster. Reason: Fix on line with h5

  • You must be logged in to reply to this topic.