Exterior rendering gets straight to curved stripes on surfaces

[dhunter1411]

Tried turning up and down quality and time but still get these stripes on the surface. Brick is an image map with a bump map., white is a bump only and high parts are a corrugated metal panel bump and color only. The light curves seem to wash out the bump maybe. Only light is the sun. Image maps are from the standard collection.

[lucdoucet_msdl]

@dhunter1411 

Those are antialiasing artefacts relating to the resolution of the rendering when view on your computer monitor. 

If you are using the Autodesk rendering engine, you can modify the render settings as described in the help article : Best Practices: Render Performance and Materials

"To improve the appearance of patterned surfaces and silhouettes without significantly increasing render time, adjust the Image Precision (Antialiasing) value. To produce images with little lighting depth but crisp geometry, use the draft quality setting with a high value for Image Precision (Antialiasing), such as 6."

Hope this helps,

-luc

[barthbradley]

You say the "Image maps are from the standard collection".  Are they using the new PBR Assets or the old Assets - the ones with an orange triangular marker on the thumbnails? Might give the PBRs a try and see. 

[barthbradley]

PBR Materials for Revit: What These Materials Mean and How You Can Use Them | Autodesk University

[dhunter1411]

Thank you! I Can’t find this setting. Can you point me in a direction? I do have antialiaising checked in the Options/Graphics tab and it shows in the Graphic Display settings. I have seen these stripes in various forms through the render settings options working up to the last one hoping they would go away. The image was set at Best and 600 printer DPI. Lowering these settings just changes the appearance some but all still there.

[dhunter1411]

Thank you! I Can’t find this setting. Can you point me in a direction? I do have antialiaising checked in the Options/Graphics tab and it shows in the Graphic Display settings. I have seen these stripes in various forms through the render settings options working up to the last one hoping they would go away. The image was set at Best and 600 printer DPI. Lowering these settings just changes the appearance some but all still there.

[lucdoucet_msdl]

@dhunter1411 

Sorry, didn't think to ask this first: What render engine is your Revit set to?

See Workflow: Render Settings below to check.

If you have an NVDIA card, your can enable hardware acceleration and have access to better rendering settings such as "Image Precision" . To change these settings, see help sections here and here:
Workflow: Render Settings
Advanced Render Quality Settings Reference

Of course, if you are using Online Rendering or an external Rendering engine (ex Vray), please confirm which.

-luc

[RDAOU]

@dhunter1411

actually, if you disable the option "Use Hardware Acceleration" you most probably will get a better rendering than what you have in that image

[ToanDN]

Is this a screenshot or the saved image?

[dhunter1411]

@lucdoucet_msdl

My render dialog doesn't have an option to choose an engine. Can't find a place to choose. Maybe that is in he update we haven't installed yet? Running 2019 still.

@RDAOU 

Tried turning acceleration on and off with no change to render.

Thanks for trying to help me!

[dhunter1411]

Saved image.

[lucdoucet_msdl]

@dhunter1411 

In Revit 2019, the NVDIA/mental ray option is not available.

As you have seemed to have chosen the "Best" rendering setting in the Render Quality Settings, which has the "Advanced - precise materials and shadows" enabled, your only choice is to increase the output resolution to eliminate the moiré anti-aliasing effect on your rendering.

Alternately, you can add a gaussian blur to these regions in post processing in Photoshop or a free online version like Photopea.com or Pixlr.com

-luc