Odd Iray Behaviour: not rendering at SubD 4
Hi,
I'm experiencing weird Iray behaviour since today. I've rendered a scene with a figure at SubD 3. Just to check if there was a noticable difference, I wanted to render the same scene with the figure at SubD 4. So I just upped the SubD level on the figure and hit render again. Ever since, Iray won't let me render scens with characters at SubD 4. The render dialog freezes at the "rendering image" stage and never displays the Verbose information. Cancelling doesn't work. I have to close Daz Studio because it no longer responds...
How do I fix this?
Thanks a lot,
Me
Below you can find what the logfile has to say about this thing (I think it doesn't mention it at all):
2018-07-25 00:03:30.309 Iray INFO - module:category(SCENE:IO): 1.0 SCENE io info : Loading module "::nvidia::lights_photometric" from "D:\Program Files\3D\DAZ 3D\STUDIO 49\DAZ 3D\DAZStudio4\shaders\iray\nvidia\lights_photometric.mdl".
2018-07-25 00:03:30.309 Iray INFO - module:category(SCENE:IO): 1.0 SCENE io info : Loading module "::daz_3d::property_annotations" from "D:\Program Files\3D\DAZ 3D\STUDIO 49\DAZ 3D\DAZStudio4\shaders\iray\daz_3d\property_annotations.mdl".
2018-07-25 00:03:30.309 Iray INFO - module:category(SCENE:IO): 1.0 SCENE io info : Loading module "::daz_3d::basic" from "D:\Program Files\3D\DAZ 3D\STUDIO 49\DAZ 3D\DAZStudio4\shaders\iray\daz_3d\basic.mdl".
2018-07-25 00:03:30.333 WARNING: dzneuraymgr.cpp(307): Iray WARNING - module:category(MDLC:COMPILER): 1.0 MDLC comp warn : D:\Program Files\3D\DAZ 3D\STUDIO 49\DAZ 3D\DAZStudio4\shaders\iray\daz_3d\irayubermaterial.mdl(422,20): conversion from 'float' to 'color' must be explicit
2018-07-25 00:03:30.333 WARNING: dzneuraymgr.cpp(307): Iray WARNING - module:category(MDLC:COMPILER): 1.0 MDLC comp warn : D:\Program Files\3D\DAZ 3D\STUDIO 49\DAZ 3D\DAZStudio4\shaders\iray\daz_3d\irayubermaterial.mdl(422,25): conversion from 'float' to 'color' must be explicit
2018-07-25 00:03:30.333 WARNING: dzneuraymgr.cpp(307): Iray WARNING - module:category(MDLC:COMPILER): 1.0 MDLC comp warn : D:\Program Files\3D\DAZ 3D\STUDIO 49\DAZ 3D\DAZStudio4\shaders\iray\daz_3d\irayubermaterial.mdl(498,12): conversion from 'float' to 'color' must be explicit
2018-07-25 00:03:30.333 WARNING: dzneuraymgr.cpp(307): Iray WARNING - module:category(MDLC:COMPILER): 1.0 MDLC comp warn : D:\Program Files\3D\DAZ 3D\STUDIO 49\DAZ 3D\DAZStudio4\shaders\iray\daz_3d\irayubermaterial.mdl(533,12): conversion from 'float' to 'color' must be explicit
2018-07-25 00:03:30.344 Iray INFO - module:category(SCENE:IO): 1.0 SCENE io info : Loading module "::daz_3d::irayubermaterial" from "D:\Program Files\3D\DAZ 3D\STUDIO 49\DAZ 3D\DAZStudio4\shaders\iray\daz_3d\irayubermaterial.mdl".
2018-07-25 00:03:30.358 Iray INFO - module:category(SCENE:IO): 1.0 SCENE io info : Loading module "::nvidia::axf_importer::axf_importer" from "D:\Program Files\3D\DAZ 3D\STUDIO 49\DAZ 3D\DAZStudio4\shaders\iray\nvidia\axf_importer\axf_importer.mdl".
2018-07-25 00:03:30.384 Iray INFO - module:category(SCENE:IO): 1.0 SCENE io info : Loading module "::nvidia::core_definitions" from "D:\Program Files\3D\DAZ 3D\STUDIO 49\DAZ 3D\DAZStudio4\shaders\iray\nvidia\core_definitions.mdl".
2018-07-25 00:03:30.400 Total class factories: 2032
2018-07-25 00:03:30.400 Iray VERBOSE - module:category(IRAY:RENDER): 1.1 IRAY rend stat : Environment cache size capacity: 5.
2018-07-25 00:03:30.402 Creating Script Engine...
2018-07-25 00:03:30.416 WARNING: 3DConnexion Plug-in Error: Could not create Device, CoCreateInstance failed
2018-07-25 00:03:30.416 3D mouse support library could not be loaded.
2018-07-25 00:03:30.418 Creating Main Window...
2018-07-25 00:03:30.418 Creating Viewport Manager...
2018-07-25 00:03:30.490 Successfully created OpenGL viewport for Viewport1.
2018-07-25 00:03:30.589 Successfully created OpenGL viewport for Viewport2.
2018-07-25 00:03:30.656 Successfully created OpenGL viewport for Viewport3.
2018-07-25 00:03:30.723 Successfully created OpenGL viewport for Viewport4.
2018-07-25 00:03:30.784 Creating Action Manager...
2018-07-25 00:03:30.793 Creating Pane Manager...
2018-07-25 00:03:30.955 Successfully created OpenGL viewport for AuxViewportView.
2018-07-25 00:03:31.011 WARNING: QLayout: Attempting to add QLayout "" to BatchPane "Batch Render", which already has a layout
2018-07-25 00:03:31.012 WARNING: QLayout: Attempting to add QLayout "" to BatchPane "Batch Render", which already has a layout
2018-07-25 00:03:31.012 WARNING: QLayout: Attempting to add QLayout "" to BatchPane "Batch Render", which already has a layout
2018-07-25 00:03:32.022 WARNING: QFile::flush: No file engine. Is IODevice open?
2018-07-25 00:03:32.062 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.062 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.062 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.063 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.063 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.063 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.063 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.063 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.064 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.064 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.064 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.064 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.065 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.065 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.065 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.068 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.124 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.125 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.135 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.142 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.142 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.144 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.145 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.146 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.147 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.154 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.165 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.165 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.165 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.165 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.166 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.166 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.167 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.172 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.172 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.174 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.175 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.219 WARNING: QLayout: Cannot add null widget to QGridLayout/
2018-07-25 00:03:32.232 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.425 Executing startup script...
2018-07-25 00:03:32.455 Started in: D:/Program Files/3D/DAZ 3D/STUDIO 49/DAZ 3D/DAZStudio4
2018-07-25 00:03:32.455 DAZ Studio Started
2018-07-25 00:03:32.455 Creating Pixel Buffer
2018-07-25 00:03:32.487 Pixel buffer - Width: 2048 Height: 2048
2018-07-25 00:03:32.488 Compiling OpenGL Shader...
2018-07-25 00:03:32.492 Fragment Shader:
Fragment Shader compiled successfully.
Linking Shader:
Shader Program successfully linked.
2018-07-25 00:03:32.675 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.683 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.684 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:32.687 WARNING: libpng warning: iCCP: known incorrect sRGB profile
2018-07-25 00:03:33.251 Compiling OpenGL Shader...
2018-07-25 00:03:33.253 Vertex Shader:
Vertex Shader compiled successfully.
Fragment Shader:
Fragment Shader compiled successfully.
Linking Shader:
Shader Program successfully linked.

Comments
That doesn't look like the render section of the log.
How long are you waiting?
Hi!
Thanks for the reply! It would appear some faulty shader was to blame. I took apart my scene and reassembled it part by part. Upon introducing a certain shader it went south again... Weird part: it was a shader I made myself, so I recreated that very same shader from scratch, saved it under a diferent name, applied that to the scene and now it renders again... The exact same shader, only a different name...
When it didn't render I waited up until 34 minutes. Nothing happened.
kind regards,
Me