Rhino 8 BETA no base color blending

Serengeti (Rhino WIP) Rendering WIP
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1

Hi everyone

In Rhino 8 it doesn’t seem possible to blend a tiled diffuse texture and the material base color.
That is perfectly OK in Rhino 7 and 6

Rhino 7

image
image1064×424 29.6 KB

Rhino 8 BETA

image
image1087×450 46.5 KB

It also appears that Cycles completely ignores texture tiling (or lack there of) in Rhino 8:
image

probably related to this issue: Rhino 8 BETA no map tiling
The image above is produced by manually setting some properties of the materials, so we get the tiling works, but blending still doesn’t work neither in decal or modulate texture mode

2

@Nikolay AFAIK there are three ways to achieve this, see attached example file, and here they all seem to work ( though the blend material shows a bug in the render preview):

image
image1584×858 225 KB

blend.3dm (577.5 KB)

3

My texture is not tiled and repeated twice along the U. So I expect to see the material color where the UV space is out of the image. The problem seem to be with the TIFF image that I have. Or rather how Rhino 8 interprets the alpha channel

Rhino 8

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image956×764 117 KB

Rhino 7

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image951×650 86.2 KB

for jpgs it works out of the box, but there is no alpha there,
PNGs with alpha look “broken” as well:

Rhino 8

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image1138×723 148 KB

Rhino 7

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image1085×584 99.7 KB

This is all rendered view, the mapping in raytraced view in 8 is completely broken

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image1095×602 141 KB

my build is 8.0.23297.13303 from Oct-24th

the png texture:
image_67802

4

base color blending works with Physically Based material

kuva
kuva1566×918 101 KB

Custom material blending is apparently broken, and extension settings aren’t applied.

I’ve logged:

  • RH-77920 Custom material base color blending doesn’t work
  • RH-77921 Texture extension settings aren’t set
5

If may I add:

Repeat/Tile is not working for Cycles either

image
image1127×866 208 KB

6

That is the texture extension bug I logged.