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/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
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/* SCCSid "$SunId$ SGI" */ |
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/* RCSid: $Id$ */ |
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/* |
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* Header for holodeck display drivers. |
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* Include after "rholo.h". |
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*/ |
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/* display requests */ |
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#define DR_BUNDLE 1 /* bundle request */ |
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#define DR_NOOP 0 /* to release from vain DR_ATTEN */ |
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#define DR_BUNDLE 1 /* lone bundle request */ |
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#define DR_ATTEN 2 /* request for attention */ |
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#define DR_SHUTDOWN 3 /* shutdown request */ |
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#define DR_NEWSET 4 /* new bundle set */ |
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#define DR_ADDSET 5 /* add to current set */ |
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#define DR_DELSET 6 /* delete from current set */ |
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#define DR_ADJSET 6 /* adjust set quantities */ |
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#define DR_DELSET 7 /* delete from current set */ |
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#define DR_KILL 8 /* kill rtrace process(es) */ |
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#define DR_RESTART 9 /* restart rtrace */ |
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#define DR_CLOBBER 10 /* clobber holodeck */ |
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#define DR_VIEWPOINT 11 /* set desired eye position */ |
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/* server responses */ |
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#define DS_BUNDLE 1 /* computed bundle */ |
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#define DS_ACKNOW 2 /* acknowledge request for attention */ |
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#define DS_SHUTDOWN 3 /* end process and close connection */ |
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#define DS_ADDHOLO 4 /* register new holodeck */ |
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#define DS_STARTIMM 5 /* begin immediate bundle set */ |
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#define DS_ENDIMM 6 /* end immediate bundle set */ |
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#define DS_BUNDLE 32 /* computed bundle */ |
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#define DS_ACKNOW 33 /* acknowledge request for attention */ |
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#define DS_SHUTDOWN 34 /* end process and close connection */ |
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#define DS_ADDHOLO 35 /* register new holodeck */ |
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#define DS_STARTIMM 36 /* begin immediate bundle set */ |
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#define DS_ENDIMM 37 /* end immediate bundle set */ |
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#define DS_OUTSECT 38 /* render from outside sections */ |
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#define DS_EYESEP 39 /* eye separation distance */ |
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/* |
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* Normally, the server channel has priority, with the display process |
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* Priority returns to normal after the following request. |
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*/ |
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#ifndef BIGREQSIZ |
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#define BIGREQSIZ 512 /* big request size (bytes) */ |
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#endif |
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typedef struct { |
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int2 type; /* message type */ |
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int4 nbytes; /* number of additional bytes */ |
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} MSGHEAD; /* message head */ |
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/* display request message bodies */ |
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/* DR_BUNDLE */ |
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#define BUNDLE_REQ PACKHEAD |
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/* DR_ATTEN */ |
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/* no body */ |
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/* DR_SHUTDOWN */ |
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/* no body */ |
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/* DR_NEWSET */ |
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/* body is nbytes/sizeof(BUNDLE_REQ) BUNDLE_REQ bodies */ |
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/* DR_ADDSET */ |
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/* body is nbytes/sizeof(PACKHEAD) BUNDLE_REQ bodies */ |
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/* DR_DELSET */ |
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/* body is nbytes/sizeof(PACKHEAD) BUNDLE_REQ bodies */ |
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/* server response message bodies */ |
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/* DS_BUNDLE */ |
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#define BUNDLE_RES PACKHEAD /* followed by nr RAYVAL structs */ |
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/* DS_ACKNOW */ |
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/* no body */ |
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/* DS_SHUTDOWN */ |
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/* no body */ |
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/* DS_ADDHOLO */ |
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#define HOLO_RES HDGRID |
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/* DS_STARTIMM */ |
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/* no body */ |
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/* DS_ENDIMM */ |
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/* no body */ |
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/* |
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* The display process is started with three arguments. The first argument |
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* is the short name of the holodeck file, appropriate for window naming, etc. |
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* The second and third arguments are the file descriptor numbers assigned to |
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* the server's standard output and input, respectively. The stdin and stdout |
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* of the display process are used for normal communication with the server, |
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* and are connected to pipes going each way. It is entirely appropriate |
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* for the display process to borrow the server's stdin and stdout for reading |
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* and writing user commands from the list in rhdriver.h. If standard input |
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* is not available for reading, then a descriptor of -1 will be passed. |
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* The standard output will always be available for writing, though it |
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* may go to /dev/null. |
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*/ |
