<span style="color: rgb(102, 51, 102);"><font color="#000000">Thank you for your reply!</font><br><br>It has been a while since I looked at the rad code but I'm pretty sure</span><br style="color: rgb(102, 51, 102);"><span style="color: rgb(102, 51, 102);">
that INDIRECT only affects the "-ab" value of the rpict comand.</span><br style="color: rgb(102, 51, 102);"><span style="color: rgb(102, 51, 102);">
Depending on your QUALITY setting is either INDIRECT = -ab</span><br style="color: rgb(102, 51, 102);"><span style="color: rgb(102, 51, 102);">
or INDIRECT=-ab-1. To keep the -ab value constant you have to</span><br style="color: rgb(102, 51, 102);"><span style="color: rgb(102, 51, 102);">
override it in with the "render=" option.<br><br><font color="#000000">I am confused by the " </font></span><span style="color: rgb(102, 51, 102);"> INDIRECT = -ab</span><span style="color: rgb(102, 51, 102);">or INDIRECT=-ab-1. To keep the -ab value constant you have to</span><span style="color: rgb(102, 51, 102);"> override it in with the "render=" option.</span><span style="color: rgb(102, 51, 102);">" <font color="#000000">In my setting, "INDIRECT would be a number, like INDIRECT = 5.<br>
<br>For my setting in rtrace, </font></span>other ambient options are high enough to avoid the mistake. And the INDIRECT is est in .rif file and rtrace is set in another file. My setting is as following:<br><br>rtrace -I -h -dp 2046 -ar 32 -ms 0.063 -ds .2 -dt .05 -dc .75 -dr 3 -sj 1 -st .01 -ab 8 -aa .1 -ad 2048 -as 1024 -av 0.01 0.01 0.01 -lr 12 -lw .0005 -af 5.amb 5.oct < 5.pts > 5.dat<br>
<br>RESOLUTION= 640 480<br>DETAIL= MEDIUM<br>VARIABILITY= MEDIUM<br>QUALITY= MEDIUM<br>INDIRECT= 5<br>REPORT= 2<br><br>render= -i<br><br> <br><span style="color: rgb(102, 51, 102);"><br><br><br><br></span>