World-Space Normals in PBR Renderer Node

Question

Hey there,I’m working with the wonderful PBR Renderer node (pbr_render2.sbs), customized to prerender PBR textures into a single "unlit" color texture with neutral lighting and AO. Surprisingly, it works quite well, but I’ve run into some core issues. Feeding prebaked World-Space Normals to replace the standard projection causes:HDRI projection behaving incorrectly (inconsistent and partial)Visual glitches, like noise or lighting appearing from belowThese are the most visible problems. There may be deeper issues especially since, from what I understand (now), this is fundamentally a 2D-based node which makes full 3D simulation likely impossible. Do you think there is a way to modify the PBR Renderer to respect World-Space Normals and fix HDRI projection without rewriting underlying functions? Any advice would be greatly appreciated.Thanks!Filip37028751ebx4_0-1768229772580.pngFilip37028751ebx4_1-1768229949991.pngfgjfghfhg.png

Nicolas Wirrmann · Answer

Hi!Yes, putting the world space normal here will probably work. However you have to make sure the normal vectors are actually "unpacked" 3d vectors in the [-1, 1] range. You can do that with a pixel processor with a simple sample(normal)*2.0 - vec3(1.0). And don't forget to set the pixel processor output format to either 16f or 32f. Also the displacement and shadows will obviously not work so make sure it's set to 0. Btw there is a filter in Painter that does pretty much the same named Baked lighting filter (environment), iirc. There is room for improvement on both this one and the PBR Render node, it's on the long list of things to do &#128578;

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded