Viewport in Material Editor do not work correctly
Branch: Binary Build: 4.7.2-2467323
Viewport in Material Editor shows default gray grid instead of previewing the material, no matter how much time need to wait.
The few ways to see the preview is to minimize the UE4 window or open any external window over UE4 for a few seconds. Saving material make also preview visible and also until any parameter will be changed.
Happening without exception.
CPU: Core 2 Duo E8600 @ 3.33GHz
GPU: NVIDIA GeForce 9600 GT
SPD: 2 GB DDR2-800 (x2)
OS: Windows 8.1 Core
Hey IneCmb and normalST-
We are looking into this issue, but looking at your system specs, your PC is extremely under powered when compared to our minimum recommenced specifications, which can be found here and here. While we do not have a minimum required spec, we find that using below the recommended specifications can result in issues like you are experiencing.
I have entered a bug to continue to investigate the issue, for reference UE-11528. As soon as I know more, I will post back here. In the meantime, I would recommend turning down the Scalability settings and see if this clears up the problem for you, https://docs.unrealengine.com/latest/INT/Engine/Performance/Scalability/ScalabilityReference/index.html
answered Mar 09 '15 at 09:19 PM
Lovecraft_K ♦♦ STAFF
I have an assumption, that maybe this is happening because of 2 cored cpu, when I look in the task manager, the CPU loaded on 80% by the ue4 editor, and when I open material, it's on 100%, 80-90% is used by editor itself, and shader compiler is using about 0-10%, but when editor window is inactive, the CPU consumption by editor is getting low(about 5-10%), and shader compiler is on 50%, and after that material is loaded quick and correct.
So yeah, better cpu(and probably a quad core) is equal to fast(and possible) material loading. But I still hope that you will fix that, because it is really annoying to switch between the windows just to relax CPU use for editor, so that shader compiler can actually work.
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