Alphas

[Laurent]

I have a case where a texture with an alphas preview fine in the material editor, renders fine but the ogl preview in my scene shows no alpha clipping, the material is showing white where it should be transparent.
any idea?
thanks.

[Fluffy]

The OGL preview of Vray materials has some limitations at the moment, this is one of them.

[Laurent]

all right, thanks

[rsquires]

Any reason why the Material weight (Alpha) sees black as solid and white as transparent. Surely this should be the other way round. In all other applications where an alpha is used white is solid and black is transparent.

regards

rich

[Walli]

not all ;-)

Vue for example uses the opposite of Cinema and for sure there are other tools too ;-)
But you can invert withing Cinema, for example with Filter and Clipping, or Colorizer with a White Black gradient.

best,
Walli

[cogombo]

You can invert B/W in bitmaps setting black point at 1 and withe point at 0 in the bitmap's properties (shader tab).

[stefan]

actually most apps see it like vray. also 3d max has it like this p.e.
we will try to make an invert button to make this as easy as possible.

for now there are many possibilties to invert a texture inc4d. no need to invert the texture itself

cheers
stefan

[rsquires]

An invert would be good. I was really talking about mattes in general, for instance the alpha channel of a movie file. Since I don't use other 3d apps I have never come across it. As I said though an invert alpha would be very useful indeed

regards

rich

[cogombo]

As I said though an invert alpha would be very useful indeed

And better if it will be enabled by default for converting c4d materials to vray materials more easily.

[Fluffy]

And better if it will be enabled by default for converting c4d materials to vray materials more easily.
Indeed.
Although Vray settings are set up that way, I think the plugin should come as close as possible to C4D's workflow. Plus, this is one less option to fiddle with, especially tedious when converting materials :)