TobyGaines Posted December 22, 2017 Share Posted December 22, 2017 Hi guys - In the Texture node ( with a mipmapped exr in it ) if I increase the Filter Width, any object reflecting the texture renders much slower. I guess changing the Filter width is actually running a blur filter on the entire texture map, instead of using a smaller tile - ? Is there any way to force it to trace just a lower-res tile? Thanks! Toby Quote Link to comment Share on other sites More sharing options...
TobyGaines Posted December 22, 2017 Author Share Posted December 22, 2017 Somer renders to illustrate - the ground is a chrome shader, the background is a dome ( geo ) with the texture on it. Filtering @ 1.0, render time is 14 sec. Filtering @ 40.0, render time is 5 times longer ( when it should be faster ) 66 sec. Quote Link to comment Share on other sites More sharing options...
symek Posted December 22, 2017 Share Posted December 22, 2017 5 hours ago, TobyGaines said: Is there any way to force it to trace just a lower-res tile? Yes. Use RAT texture. Mantra doesn't use tilling nor mipmapping in EXR format (even if file itself is tiled and mipmapped). Quote Link to comment Share on other sites More sharing options...
TobyGaines Posted December 24, 2017 Author Share Posted December 24, 2017 Ok great, thanks - but I thought it was converting it anyway? Is there a tool to do the conversion beforehand? Googling - booyah! icp fixed everything, renders in 12sec now, thanks! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.