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To render radiance, first surface distance, and normals in a layered image: |
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|
.IP "" .2i |
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|
rtpict -n 8 -vf fish.vf @render.opt -ovLn fisholay scene.oct |
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+ |
.SH NOTES |
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Users should seriously consider using |
| 114 |
+ |
.I rpiece(1) |
| 115 |
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when irradiance caching is employed with a shared ambient file. |
| 116 |
+ |
If |
| 117 |
+ |
.I rtpict |
| 118 |
+ |
is used in multiprocessing mode with a shared irradiance cache, |
| 119 |
+ |
it is trying to compute almost |
| 120 |
+ |
the same part of the same scanline in different processes, which |
| 121 |
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results in many redundant calculations. |
| 122 |
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The |
| 123 |
+ |
.I rpiece |
| 124 |
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program avoids this by working on separate tiles in each |
| 125 |
+ |
process, with less overlap in the indirect irradiance calculation. |
| 126 |
+ |
Either program will benefit from an "overture" run of a |
| 127 |
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single-process rpict to create the ambient file using a low-resolution |
| 128 |
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rendering that is discarded, but this will not completely solve the |
| 129 |
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problem for |
| 130 |
+ |
.I rtpict. |
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|
.SH AUTHOR |
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|
Greg Ward |
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|
.SH "SEE ALSO" |
