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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 3.18 by gwlarson, Fri Dec 18 11:56:10 1998 UTC

# Line 1 | Line 1
1 < /* Copyright (c) 1997 Silicon Graphics, Inc. */
1 > /* Copyright (c) 1998 Silicon Graphics, Inc. */
2  
3   /* SCCSid "$SunId$ SGI" */
4  
# Line 10 | Line 10
10  
11   extern struct driver {
12          char    *name;          /* holodeck name or title */
13 <        VIEW    v;              /* preferred view parameters */
14 <        int     hres, vres;     /* device resolution */
13 >        VIEW    v;              /* base view parameters */
14 >        int     hres, vres;     /* base view resolution */
15          int     ifd;            /* input file descriptor (for select) */
16 +        int     firstuse;       /* non-zero if driver can't recycle samples */
17 +        int     inpready;       /* number of unprocessed input events */
18   } odev;                 /* our open device */
19  
20 <                        /* 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 */
20 > extern char     odev_args[];    /* command arguments, if any */
21  
22 + extern int      imm_mode;       /* bundles are being delivered immediately */
23  
24 + extern double   eyesepdist;     /* world eye separation distance */
25 +
26 +                                /* user commands */
27 + #define DC_SETVIEW      0               /* set the base view */
28 + #define DC_GETVIEW      1               /* print the current base view */
29 + #define DC_LASTVIEW     2               /* restore previous view */
30 + #define DC_FOCUS        3               /* view focus */
31 + #define DC_PAUSE        4               /* pause the current calculation */
32 + #define DC_RESUME       5               /* resume the calculation */
33 + #define DC_REDRAW       6               /* redraw from server */
34 + #define DC_KILL         7               /* kill rtrace process(es) */
35 + #define DC_RESTART      8               /* restart rtrace process(es) */
36 + #define DC_CLOBBER      9               /* clobber holodeck file */
37 + #define DC_QUIT         10              /* quit the program */
38 +
39 + #define DC_NCMDS        11              /* number of commands */
40 +
41 +                                /* dev_input() returns flags from above */
42 + #define DFL(dc)         (1<<(dc))
43 +
44 + #define CTRL(c)         ((c)-'@')
45 +                                /* commands entered in display window */
46 + #define DV_INIT         {'\0','v','l','f','p','\r',CTRL('L'),'K','R','C','q'}
47 +                                /* commands entered on stdin */
48 + #define DC_INIT         {"VIEW=","where","last","frame","pause","resume",\
49 +                                "redraw","kill","restart","clobber","quit"}
50 +
51 +
52   /************************************************************************
53   * Driver routines (all are required):
54  
# Line 34 | Line 58 | dev_open(nm)           : prepare the device
58   char    *nm;            : appropriate title bar annotation
59  
60   Sets fields of odev structure and prepares the display for i/o.
61 < The view type, horizontal and vertical view angles and other default
62 < parameters in odev.v should also be assigned.
61 > The base view type, horizontal and vertical view angles and other
62 > default parameters in odev.v should also be assigned.
63  
64  
65 < void
66 < dev_view(nv)            : set display view parameters
65 > int
66 > dev_view(nv)            : set base view parameters
67   VIEW    *nv;            : the new view
68  
69 < Updates the display for the given view change.
69 > Updates the display for the given base view change.
70   Look for nv==&odev.v when making view current after dev_input()
71 < returns DEV_NEWVIEW flag.
71 > returns DEV_NEWVIEW flag.  Return 1 on success, or 0 if the
72 > new view would conflict with device requirements.  In the latter
73 > case, reset parameters in nv to make it more agreeable, calling
74 > error(COMMAND, "appropriate user warning").
75  
76  
77   void
78 < dev_value(c, p, v)      : register new point of light
78 > dev_clear()             : clear device memory
79 >
80 > Clear the device memory in preparation for fresh data.  Clearing
81 > the screen is optional.
82 >
83 >
84 > void
85 > dev_value(c, d, p)      : register new point of light
86   COLR    c;              : pixel color (RGBE)
87 + FVECT   d;              : ray direction vector
88   FVECT   p;              : world intersection point
54 – FVECT   v;              : ray direction vector
89  
90 < Add the given color point to the display output queue.
90 > Add the given color point to the display output queue.  If imm_mode is
91 > non-zero, then values are being sent in rapid succession.  If p is NULL,
92 > then the point is at infinity.
93  
94  
95   int
96   dev_flush()             : flush the output and prepare for select call
97  
98   Updates display, taking any pending action required before select(2) call.
99 < Returns non-zero if there is device input available.
99 > Returns non-zero if there is device input available, setting odev.inpready.
100  
101  
102   int
# Line 68 | Line 104 | dev_input()            : process pending display input
104  
105   Called when odev struct file descriptor shows input is ready.
106   Returns flags indicating actions to take in the control process.
107 < If the DEV_NEWVIEW or DEV_NEWSIZE flag is returned, the odev
108 < structure must be updated beforehand.
107 > If the DC_VIEW or DC_RESIZE flag is returned, the odev
108 > structure must be updated beforehand.  If the DC_FOCUS
109 > flag is set, then odev_args contains the frame dimensions.
110 > No events shall remain when this function returns,
111 > and odev.inpready will therefore be 0.
112  
113 + void
114 + dev_auxcom(cmd, args)   : process auxiliary command
115 + char    *cmd, *args;    : command name and argument string
116  
117 + Execute an auxiliary command (not one of those listed at the head of
118 + this file).  The cmd argument points to the command name itself, and
119 + the args argument points to a string with the rest of the input line.
120 + If the command isn't known or there ARE no auxiliary commands, print
121 + an appropriate COMMAND error message and return.
122 +
123 +
124 + VIEW *
125 + dev_auxview(n, hv)      : return nth auxiliary view
126 + int     n;              : auxiliary view number
127 + int     hv[2];          : returned horiz. and vert. image resolution
128 +
129 + Return the nth auxiliary view associated with the current base view.
130 + The hv entries are assigned the horizontal and vertical view resolution,
131 + respectively.  Function returns NULL if there are no more auxiliary
132 + views.  The zeroeth auxiliary view is the base view itself.
133 +
134 +
135   void
136 + dev_section(otf)        : add octree geometry for rendering
137 + char    *otf;           : octree and portal file names
138 +
139 + Add the given octree file to the list of geometry to be used to render
140 + intermediate views if direct geometry rendering is available.  Additional
141 + file names (separated by spaces) are Radiance scene files containing
142 + the geometry for "portals" to separate sections.  The given
143 + character string is guaranteed to be static (or permanently allocated)
144 + such that it may be safely stored as a pointer.  The same pointer or
145 + file list may be (and often is) given repeatedly.  If a given octree
146 + does not exist, the call should be silently ignored.  If otn is NULL,
147 + then the last octree has been given, and the display can be updated
148 + with the new information.
149 +
150 +
151 + void
152   dev_close()             : close the display
153  
154   Close the display device and free up resources in preparation for exit.
# Line 80 | Line 156 | Set odev.v.type=0 and odev.hres=odev.vres=0 when done.
156  
157  
158   ************************************************************************/
159 +
160 +
161 + extern VIEW     *dev_auxview();
162 +
163 + extern int      *beam_view();

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