If you have to put the shading rate at 0.1 to get good results, again try modeling it. Recall that PRMans shading rate attribute indicates the desired micropolygon size in screen space the renderer will try to achieve this rate when dicing. Putting it back to one fixed that, but then the pixelation came back. Since you wanted a teachable moment, I guess Ill share what I have learned about renderman settings over the years. That wall has grainy shadows in the proof and they are more smoothed out in the High quality. Yeah they were blurred because of the filter size. Its because of the combination of shading rate and shadow samples. The RenderMan Shading Language Guide Cortes, Don Rudy, Raghavachary, Saty on. If you have to go 8K or higher, try modeling it. Your right in that you might want to try a 4K map and see if that helps. On your first question, yeah I would think it needs to be thicker to get nice AA on the edges. Is there other way to keep the displacement sharp while zooming out without lowering the shading rate to that low? (I can’t go lower than 0.1) It can be fixed by creating a custome shading rate for that geo and lowering it to 0.1. #RENDERMAN SHADING RATE FREE#Excellent Condition Quick & Free Delivery in 2-14 days. I found when I zoomed out on the geo, the indentations got blurred(not well defined on the edge). THE RENDERMAN SHADING LANGUAGE GUIDE By Rudy Cortes & Saty Raghavachary VG+ Opens in a new window or tab. So, the problem is actually from the texture? Theoretically, if I want to get thiner indentation, I have to double or triple the resolution of the displacement texture map and in that, use a thicker, softer pen/line tool to get rid of the aliasing edge along the lines, correct? Note that while the detail of the envelope has now been captured, the coarse shading rate in. Thank you, Angel for the quick and detailed reply. The result is a large reduction in shading points: now 1,254,826. The execution rate of a shader in RenderMan is governed by the ShadingRate parameter (Apodaca and Gritz 2000).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |