Translucent material very long updating and saving times.

Development Rendering
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1

Hi,
(Just to be clear I don’t mean compile times)

When setting your material on Translucent (blend mode) and Lighting mode on Surface translucency volume. The material time taken to update or save when dealing with texture samples are prohibitively (buggy) long. I notice it after I got the latest 4.14.3 hotfix today (14/01/2017) . On 4.14.3 it takes a very long time to update the change (material viewport showing the latest change etc) and save the material will hang on 50% for a very long time each time you make the smallest of changes. On engine version 4.13.2 the updating and saving time are short and behaves like expected doing the same tests.

I also tested this with instance materials which generate the same consistent results.

It also shows this slow behaviour with the other lighting modes. But it was most pronounced with surface translucency volume.

Kind Regards

2

Yeah I noticed too! I don’t know if its expected, but I was very surprised at the huge difference in shader compilation and saving times compared to a “normal” material. I don’t have any functions in the material. Just static params for opacity, roughness, spec and metallic.

You mention its not the compile time for you. But for me its both compile time and saving that takes super long.

3

Did anyone ever find a resolution to this? It’s really hard to iterate on translucent materials as the compile time keeps getting longer and longer each time I hit ‘apply’…