LuxRender v0.6 Release Candidate 1 - Windows/Linux/MacOSX

[timmyG]

As such, you can either install a 64bit OS, which i'd recommend.

On that note, he means Linux, unless you want to use Vista (or can actually find a 64-bit XP, good luck with that)...

I'm going to have to agree with Radiance, with 3-GB of RAM, you can probably get away with a 64-bit OS. Not only is the 64-bit Lux generally faster, you can also upgrade the RAM on your system (yes, theoretically a 32-bit OS can handle 4-GB, but it won't be able to get the most out of it). The only drawback is that you're going to be using a bit more RAM for certain things (theoretically a 64-bit OS uses twice the RAM as an equivalent 32-bit OS, but this is rarely the case).

As for me, I refuse to go back to a 32-bit OS, unless I got one of those Eee PCs.

[jeanphi]

Hi,

The only drawback is that you're going to be using a bit more RAM for certain things (theoretically a 64-bit OS uses twice the RAM as an equivalent 32-bit OS, but this is rarely the case).

While you'll actually use a little more RAM, where does this twice comes from? Only memory pointers and natural integers are twice as long, but those are far from being the most common types used in a renderer (or in most applications). And code size will not be twice as large either.

Jeanphi

[loramel]

You should use lightgroups to tweak lighting in your scene, then replicate the configuration to luxblend,
which will allow you to render the final in spectral space instead of lightgroups which work in RGB space, giving more realism/better quality.

I tried this, but the result is quite different. What I did was to transfer the gain values of the light groups in the lightgroup panel to the gain values in luxblend for the individual lights. Is this the correct procedure to accomplish this ?

[Radiance]

You should use lightgroups to tweak lighting in your scene, then replicate the configuration to luxblend,
which will allow you to render the final in spectral space instead of lightgroups which work in RGB space, giving more realism/better quality.

I tried this, but the result is quite different. What I did was to transfer the gain values of the light groups in the lightgroup panel to the gain values in luxblend for the individual lights. Is this the correct procedure to accomplish this ?

yes that's why i changed the 'scale' to 'gain' before releasing RC1 in the lightgroups UI.
gain maps to gain in luxblend, RGB colour to a 'constant' texture, and the blackbody slider to the blackbody texture in luxblend
the values all behave identical.

Radiance

[akhenathon]

Hi,

As such, you can either install a 64bit OS, which i'd recommend, but in this case you could lighten your scene a bit, make sure you're not using lots of heavy subdivision.

Radiance

I'll try.
Thank you, Radiance.

[rober5]

Thanks developers, the most beautiful gift for the spring

[akhenathon]

I'm going to have to agree with Radiance, with 3-GB of RAM, you can probably get away with a 64-bit OS. Not only is the 64-bit Lux generally faster, you can also upgrade the RAM on your system (yes, theoretically a 32-bit OS can handle 4-GB, but it won't be able to get the most out of it).

Thanks, timmyG. I already have 4 GB of RAM, but XP 32-bit only recognizes 3 GB...
I'll try a 64-bit OS.

[suvakas]

I don't know if it's a known issue or not, but gamma values other than defaults are not always saved to tga file.
If I move the slider from 2.20 to 1, then the image gets saved correctly instantly (as it is in Lux view), but tga is back at 2.20 again on the next save cycle. I then have to move the gamma slider again to force it to update tga.

[Radiance]

I don't know if it's a known issue or not, but gamma values other than defaults are not always saved to tga file.
If I move the slider from 2.20 to 1, then the image gets saved correctly instantly (as it is in Lux view), but tga is back at 2.20 again on the next save cycle. I then have to move the gamma slider again to force it to update tga.

Hi,
thanks for reporting i'll investigate this.

Radiance

[tony]

Hi:

I compiled the CVS version for Ubuntu 8.10, 64 bits.

He premultiplyalpha 'off' and here is the screenshot.

But the tga image is without background .


Why?

Greetings.