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root/radiance/ray/src/hd/rhdriver.h
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Comparing ray/src/hd/rhdriver.h (file contents):
Revision 3.6 by gregl, Mon Dec 8 18:51:15 1997 UTC vs.
Revision 3.22 by greg, Fri Jun 20 00:25:49 2003 UTC

# Line 1 | Line 1
1 < /* Copyright (c) 1997 Silicon Graphics, Inc. */
2 <
3 < /* SCCSid "$SunId$ SGI" */
4 <
1 > /* RCSid: $Id$ */
2   /*
3   * Header file for holodeck device driver routines.
4   */
# Line 10 | Line 7
7  
8   extern struct driver {
9          char    *name;          /* holodeck name or title */
10 <        VIEW    v;              /* preferred view parameters */
11 <        int     hres, vres;     /* device resolution */
10 >        VIEW    v;              /* base view parameters */
11 >        int     hres, vres;     /* base view resolution */
12          int     ifd;            /* input file descriptor (for select) */
13 +        int     firstuse;       /* non-zero if driver can't recycle samples */
14 +        int     inpready;       /* number of unprocessed input events */
15   } odev;                 /* our open device */
16  
17 <                        /* dev_input() return flags */
19 < #define DEV_SHUTDOWN    01      /* user shutdown request */
20 < #define DEV_NEWVIEW     02      /* view change (new view in odev.v) */
21 < #define DEV_NEWSIZE     04      /* device resolution change */
22 < #define DEV_WAIT        010     /* pause computation and wait for input */
23 < #define DEV_RESUME      020     /* resume after pause */
24 < #define DEV_REDRAW      040     /* redraw from server */
25 < #define DEV_PUTVIEW     0100    /* print out current view */
17 > extern char     odev_args[];    /* command arguments, if any */
18  
19 + extern int      imm_mode;       /* bundles are being delivered immediately */
20  
21 + extern double   eyesepdist;     /* world eye separation distance */
22 +
23 +                                /* user commands */
24 + #define DC_SETVIEW      0               /* set the base view */
25 + #define DC_GETVIEW      1               /* print the current base view */
26 + #define DC_LASTVIEW     2               /* restore previous view */
27 + #define DC_FOCUS        3               /* view focus */
28 + #define DC_PAUSE        4               /* pause the current calculation */
29 + #define DC_RESUME       5               /* resume the calculation */
30 + #define DC_REDRAW       6               /* redraw from server */
31 + #define DC_KILL         7               /* kill rtrace process(es) */
32 + #define DC_RESTART      8               /* restart rtrace process(es) */
33 + #define DC_CLOBBER      9               /* clobber holodeck file */
34 + #define DC_QUIT         10              /* quit the program */
35 +
36 + #define DC_NCMDS        11              /* number of commands */
37 +
38 +                                /* dev_input() returns flags from above */
39 + #define DFL(dc)         (1<<(dc))
40 +
41 + #define CTRL(c)         ((c)-'@')
42 +                                /* commands entered in display window */
43 + #define DV_INIT         {'\0','v','l','f','p','\r',CTRL('L'),'K','R','C','q'}
44 +                                /* commands entered on stdin */
45 + #define DC_INIT         {"VIEW=","where","last","frame","pause","resume",\
46 +                                "redraw","kill","restart","clobber","quit"}
47 +
48 +
49   /************************************************************************
50   * Driver routines (all are required):
51  
# Line 34 | Line 55 | dev_open(nm)           : prepare the device
55   char    *nm;            : appropriate title bar annotation
56  
57   Sets fields of odev structure and prepares the display for i/o.
58 < The view type, horizontal and vertical view angles and other default
59 < parameters in odev.v should also be assigned.
58 > The base view type, horizontal and vertical view angles and other
59 > default parameters in odev.v should also be assigned.
60  
61  
62 < void
63 < dev_view(nv)            : set display view parameters
62 > int
63 > dev_view(nv)            : set base view parameters
64   VIEW    *nv;            : the new view
65  
66 < Updates the display for the given view change.
66 > Updates the display for the given base view change.
67   Look for nv==&odev.v when making view current after dev_input()
68 < returns DEV_NEWVIEW flag.
68 > returns DEV_NEWVIEW flag.  Return 1 on success, or 0 if the
69 > new view would conflict with device requirements.  In the latter
70 > case, reset parameters in nv to make it more agreeable, calling
71 > error(COMMAND, "appropriate user warning").
72  
73  
74   void
75 < dev_value(c, p, v)      : register new point of light
75 > dev_clear()             : clear device memory
76 >
77 > Clear the device memory in preparation for fresh data.  Clearing
78 > the screen is optional.
79 >
80 >
81 > void
82 > dev_value(c, d, p)      : register new point of light
83   COLR    c;              : pixel color (RGBE)
84 + FVECT   d;              : ray direction vector
85   FVECT   p;              : world intersection point
54 – FVECT   v;              : ray direction vector
86  
87 < Add the given color point to the display output queue.
87 > Add the given color point to the display output queue.  If imm_mode is
88 > non-zero, then values are being sent in rapid succession.  If p is NULL,
89 > then the point is at infinity.
90  
91  
92   int
93   dev_flush()             : flush the output and prepare for select call
94  
95   Updates display, taking any pending action required before select(2) call.
96 < Returns non-zero if there is device input available.
96 > Returns non-zero if there is device input available, setting odev.inpready.
97  
98  
99   int
# Line 68 | Line 101 | dev_input()            : process pending display input
101  
102   Called when odev struct file descriptor shows input is ready.
103   Returns flags indicating actions to take in the control process.
104 < If the DEV_NEWVIEW or DEV_NEWSIZE flag is returned, the odev
105 < structure must be updated beforehand.
104 > If the DC_VIEW or DC_RESIZE flag is returned, the odev
105 > structure must be updated beforehand.  If the DC_FOCUS
106 > flag is set, then odev_args contains the frame dimensions.
107 > No events shall remain when this function returns,
108 > and odev.inpready will therefore be 0.
109  
110 + void
111 + dev_auxcom(cmd, args)   : process auxiliary command
112 + char    *cmd, *args;    : command name and argument string
113  
114 + Execute an auxiliary command (not one of those listed at the head of
115 + this file).  The cmd argument points to the command name itself, and
116 + the args argument points to a string with the rest of the input line.
117 + If the command isn't known or there ARE no auxiliary commands, print
118 + an appropriate COMMAND error message and return.
119 +
120 +
121 + VIEW *
122 + dev_auxview(n, hv)      : return nth auxiliary view
123 + int     n;              : auxiliary view number
124 + int     hv[2];          : returned horiz. and vert. image resolution
125 +
126 + Return the nth auxiliary view associated with the current base view.
127 + The hv entries are assigned the horizontal and vertical view resolution,
128 + respectively.  Function returns NULL if there are no more auxiliary
129 + views.  The zeroeth auxiliary view is the base view itself.
130 +
131 +
132   void
133 + dev_section(gf, pf)     : add geometry and ports for rendering
134 + char    *gf;            : geometry file name
135 + char    *pf;            : portal file name(s)
136 +
137 + Add the given geometry file to the list of geometry to render for
138 + intermediate views if direct geometry rendering is available.  The
139 + second argument gives the name(s) of any portal geometry files
140 + associated with this section.  Multiple portal file names are separated
141 + by spaces.  A single octree file will be given for the geometry, ending
142 + in the ".oct" suffix.  Portal files will be given as zero or more
143 + Radiance scene description file names.  If no portals are given for
144 + this section, the string may be NULL.  The character strings are
145 + guaranteed to be static (or permanently allocated) such that they may
146 + be safely stored as a pointer.  The same pointers or file lists may be
147 + (and often are) given repeatedly.  If a given geometry file does not
148 + exist, the call should be silently ignored.  If gf is NULL, then the
149 + last section has been given, and the display can be updated with the
150 + new information.
151 +
152 +
153 + void
154   dev_close()             : close the display
155  
156   Close the display device and free up resources in preparation for exit.
# Line 80 | Line 158 | Set odev.v.type=0 and odev.hres=odev.vres=0 when done.
158  
159  
160   ************************************************************************/
161 +
162 +
163 + extern VIEW     *dev_auxview();
164 +
165 + extern int16    *beam_view();

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