The Furnace Test, does Blender 4.0 pass?
In this video, I show some subtle but quite significant improvements to the foundation of Cycles for Blender 4.0, dealing with materials and shading, by running what's called The Furnace Test. This is a test to determine if a renderer is properly handling energy conservation and preservation. Passing the Furnace Test is a really good thing. As part of this I discuss the difference between the shading algorithm GGX and Multiscatter GGX, and improvement to it in 4.0.
00:00 Introduction
01:10 Furnace Test, setup in 3.6
03:45 Furnace Test in Blender 3.6, specular+diffuse
05:25 Adding Clearcoat
05:52 Adding Sheen
06:58 Energy preservation, GGX/Multiscatter GGX
10:00 Energy preservation and transparency
12:13 Furnace Test in Blender 4.0
16:25 Comparison Example #1
17:05 Comparison Example #2
17:43 Comparison Example #3
19:00 Comparison Example #4
You can see all of my videos about changes to Cycles and Blender 4.0 here:
• Blender 4.0 Feature Videos
#ggx #multiscatterggx #blender4 #blendertutorial #energyconservation