|
|
Op 22/11/2020 om 15:48 schreef Kenneth:
>
> [I'm running the latest v3.8 Windows 'development' build of POV-ray.]
>
> Does anyone know the updated proper syntax for LOADING a saved radiosity data
> file? I tried doing a search of the newsgroups, but I have not found anything
> useful. I haven't used radiosity very much in the past, but I'm trying to catch
> up ;-)
>
> For SAVING radiosity data, POV-ray's built-in documentation and the online wiki
> have the following instructions, for use in an .INI file:
>
> Radiosity_File_Name="RAD data" (or whatever file name you choose)
> Radiosity_To_File=on
>
> *Both* of these need to be used to create a saved rad-data file, and they
> successfully work.
>
> But for re-LOADING the saved file for use in the scene, the instructions have
> apparently never been finalized-- the syntax as given does not work...
> Radiosity_From_File=<on/off>
> although the docs do say that the syntax is "subject to change."
>
> By experimenting, I found some syntax that *appears* to work -- at least, it
> does not cause a fatal error:
> Radiosity_From_File="RAD data"
> I don't know if there is a 2nd command that also needs to be used; the docs
> don't mention one.
>
> However, in running tests with this syntax, it seems that the saved data file is
> not being used at all. The only way that I know to test this is to creat a scene
> with initial radiosity settings that take a long time to render (while SAVING
> the *large* rad-data file), and then to try to re-load the file for a subsequent
> render. The result is that the 2nd render takes just as long to complete as the
> first-- so I have to assume that the saved rad file is not being used.
>
> I also tried +RFI on the command line, per the documentation, but the re-render
> completely fails: "Runtime library Invalid Parameter Handler Invoked"
>
> Has anyone found alternate command-line settings for loading the file that will
> actually work? Does this command successfully work in LINUX builds of the source
> code?
>
> The other important question is: What should the scene's rad settings be when
> RE-rendering the scene with the saved file? Are they supposed to be left as-is?
> Or modified? This has always been a mystery to me, and I have not yet found
> anything in the documentation that would be a clue. (I tried using a 'blank'
> radiosity block-- radiosity{} -- but that ignores the saved data as well.)
>
>
I have used the features a couple of times with the following ini code:
// +w285 +h424 -a +am2 +bm2 Radiosity_File_Name="Samples.rad" +RFO
// +w855 +h1272 +a0.1 +am2 +bm2 +wt6 Radiosity_File_Name="Samples.rad" +RFI
*Note the difference of image size for saving and reading!!!* That will
gain you much render time for the same final result. As far as I am
aware, the rad settings remain the same for both renders, and povray
takes care of doing things right (or so I have understood it). I have no
idea about linux.
--
Thomas
Post a reply to this message
|
|