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root/radiance/ray/src/hd/rhd_sample.h
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Comparing ray/src/hd/rhd_sample.h (file contents):
Revision 3.6 by gwlarson, Mon Jun 7 13:23:48 1999 UTC vs.
Revision 3.9 by greg, Fri Jun 20 00:25:49 2003 UTC

# Line 1 | Line 1
1 < /* Copyright (c) 1998 Silicon Graphics, Inc. */
2 <
3 < /* SCCSid "$SunId$ SGI" */
4 <
1 > /* RCSid: $Id$ */
2   /*
3   * Sample data structures for holodeck display drivers.
4 + *
5 + * Include after "standard.h"
6   */
7   #include "color.h"
8   #include "tonemap.h"
9   #include "rhdriver.h"
10 + #include "object.h"
11  
12 #ifndef int2
13 #define int2    short
14 #endif
15 #ifndef int4
16 #define int4    int
17 #endif
18
12   #ifndef INVALID
13   #define INVALID  -1
14   #endif
15  
16 + #define SFLOAT float
17  
18 + typedef OBJECT S_ID;
19 +
20 + #define S_ID_MAX  ((1 << ((sizeof(S_ID)<<3)-1))-1)
21 +
22   typedef struct samp {
23 <        float           (*wp)[3];       /* world intersection point array */
24 <        int4            *wd;            /* world direction array */
27 < #ifndef HP_VERSION
23 >        SFLOAT          (*wp)[3];       /* world intersection point array */
24 >        int32           *wd;            /* world direction array */
25          TMbright        *brt;           /* encoded brightness array */
29 #endif
26          BYTE            (*chr)[3];      /* encoded chrominance array */
27          BYTE            (*rgb)[3];      /* tone-mapped color array */
28          int             *info;          /* Extra sample info */
29 <        int             *info1;          /* Extra sample info */
29 >        int             *info1;         /* Extra sample info */
30          int             max_samp;       /* maximum number of samples */
31 <        int             max_base_pt;     /* maximum number of aux points */
32 <        int             next_base_pt;    /* next auxilliary point to add */
33 <        int             replace_samp;   /* next sample to free  */
31 >        int             max_base_pt;    /* maximum number of aux points */
32 >        S_ID            next_base_pt;   /* next auxilliary point to add */
33 >        S_ID            replace_samp;   /* next sample to free  */
34          int             num_samp;       /* current number of samples */
35 <        int             tone_map;       /* pointer to next value(s)t tonemap*/
36 <        int             free_samp;      /* free sample-not available yet */
35 >        S_ID             tone_map;      /* pointer to next value(s)t tonemap*/
36 >        S_ID             free_samp;     /* next free sample */
37          char            *base;          /* base of allocated memory */
38   } SAMP;
39  
# Line 48 | Line 44 | typedef struct samp {
44   #define S_CHR(s)                ((s)->chr)
45   #define S_RGB(s)                ((s)->rgb)
46   #define S_INFO(s)               ((s)->info)
47 < #define S_INFO1(s)               ((s)->info1)
47 > #define S_INFO1(s)              ((s)->info1)
48   #define S_MAX_SAMP(s)           ((s)->max_samp)
49   #define S_MAX_BASE_PT(s)        ((s)->max_base_pt)
50   #define S_NEXT_BASE_PT(s)       ((s)->next_base_pt)
# Line 64 | Line 60 | typedef struct samp {
60   #define S_NTH_RGB(s,n)          (S_RGB(s)[(n)])
61   #define S_NTH_CHR(s,n)          (S_CHR(s)[(n)])
62   #define S_NTH_INFO(s,n)         (S_INFO(s)[(n)])
63 < #define S_NTH_INFO1(s,n)         (S_INFO1(s)[(n)])
63 > #define S_NTH_INFO1(s,n)        (S_INFO1(s)[(n)])
64   #define S_NTH_BRT(s,n)          (S_BRT(s)[(n)])
65  
66   /* Sample Flag macros */
# Line 89 | Line 85 | typedef struct samp {
85  
86   extern  SAMP rsL;                      
87   extern double   sDepthEps;      /* epsilon to compare depths (z fraction) */
88 < extern int4     encodedir();    /* Encodes FVECT direction */
88 > extern int32    encodedir();    /* Encodes FVECT direction */
89   extern void     decodedir();    /* Decodes dir-> FVECT */
90   extern double   fdir2diff(), dir2diff(); /* Compare dir and FVECT */
91 < extern int4    *samp_flag;     /* Per/sample flags s */
91 > extern int32    *samp_flag;     /* Per/sample flags s */
92  
93   /* These values are set by the driver, and used in the OGL call for glFrustum*/
94   extern double dev_zmin,dev_zmax;
95 <
95 > extern S_ID sAdd_base_point();
96   extern SAMP *sAlloc();
97 <
97 > extern S_ID sAlloc_samp();
98 > /*
99 > * int
100 > * smInit(n)            : Initialize/clear data structures for n entries
101 > * int  n;
102 > *
103 > * Initialize sampL and other data structures for at least n samples.
104 > * If n is 0, then free data structures.  Return number actually allocated.
105 > *
106 > *
107 > * int
108 > * smNewSamp(c, p, v)   : register new sample point and return index
109 > * COLR c;              : pixel color (RGBE)
110 > * FVECT        p;      : world intersection point
111 > * FVECT        v;      : ray direction vector
112 > *
113 > * Add new sample point to data structures, removing old values as necessary.
114 > * New sample representation will be output in next call to smUpdate().
115 > *
116 > *
117 > * int
118 > * smFindSamp(orig, dir): intersect ray with 3D rep. and find closest sample
119 > * FVECT        orig, dir;
120 > *
121 > * Find the closest sample to the given ray.  Return -1 on failure.
122 > *
123 > *
124 > * smClean()            : display has been wiped clean
125 > *
126 > * Called after display has been effectively cleared, meaning that all
127 > * geometry must be resent down the pipeline in the next call to smUpdate().
128 > *
129 > *
130 > * smUpdate(vp, qua)    : update OpenGL output geometry for view vp
131 > * VIEW *vp;            : desired view
132 > * int  qua;            : quality level (percentage on linear time scale)
133 > *
134 > * Draw new geometric representation using OpenGL calls.  Assume that the
135 > * view has already been set up and the correct frame buffer has been
136 > * selected for drawing.  The quality level is on a linear scale, where 100%
137 > * is full (final) quality.  It is not necessary to redraw geometry that has
138 > * been output since the last call to smClean().  (The last view drawn will
139 > * be vp==&odev.v each time.)
140 > */
141  
142  
143  

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