(Fixed) [HOU-2812] Can't find a way for converting floats to color on GPU

[sebastian_orosz]

Hi,

there's the TexRgbaCombine node, which does not work on GPU. Also this node seems to be deprecated:



I can't find that mentioned Float3ToAColor node. Is there another way? I'm currently stuck at this point.

[hsz]

Same here, how do you from Float to Vector and vector to floats? Thanks. Talking about GPU

[bdancer]

Could you pls post the .hip files with setups that do not work? I guess it'll be easier to fix such issues this way...

[hsz]

if you change to GPU rendering there are gray out you can not use them. you can check this for yourself.

[bdancer]

I've added TexFloat3ToAColor yesterday, could you pls try that one?
But now I also think I could probably auto-convert rgba combine node to float3toacolor internally export time...

[hsz]

Thanks, I saw in the latest daily and I believe is working, however, how do you split color into float or vector to float in Vray, I tried to look for a node but I didn't find it. You have a color to float but is a single. I added what RS has and also you can just compare it to Houdini's own vector to float. Maybe a missing something here?

[david.anastacio]

Hey,

Use a "color channel" texture.

https://docs.chaos.com/m/mobile.action#page/44733717

Actually, use 3 of them so you can output each channel component. For ease, you can also make this setup into an hda.

Best,
David.

[hsz]

forgot about this one - thanks for the reminder! I still wish was something more like a vector to float straight from Vray.

[sebastian_orosz]

Yeah, a single node that handles vec2float would be greatly appreciated. What about performance? Is there any performance impact by using 3 color channel nodes to convert a vector to floats in comparison to a single node solution (that is currently not available)? If so, that would push the need for such a node even more.