ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/hd/rhd_odraw.h
Revision: 3.10
Committed: Mon Jun 30 14:59:11 2003 UTC (20 years, 9 months ago) by schorsch
Content type: text/plain
Branch: MAIN
Changes since 3.9: +2 -2 lines
Log Message:
Replaced most outdated BSD function calls with their posix equivalents, and cleaned up a few other platform dependencies.

File Contents

# Content
1 /* RCSid $Id: rhd_odraw.h,v 3.9 2003/06/20 00:25:49 greg Exp $ */
2 /*
3 * Header for OpenGL cone drawing routines with depth buffer checks.
4 *
5 * Include after "standard.h"
6 */
7
8 #include "color.h"
9 #include "tonemap.h"
10 #include "rhdriver.h"
11
12 extern struct ODview {
13 int sfirst, snext; /* first sample and first in next view */
14 short hhi, vhi; /* screen image resolution */
15 short hlow, vlow; /* block resolution */
16 int n2redraw; /* approx. number of samples needing redraw */
17 struct ODblock {
18 short nsamp; /* number of samples in block */
19 short nused; /* number actually allocated */
20 int first; /* first sample in this block */
21 int free; /* index for block free list */
22 float pthresh; /* proximity threshold */
23 } *bmap; /* low resolution image map */
24 int32 *emap; /* low resolution edge presence map */
25 int32 *pmap; /* high resolution presence map */
26 GLfloat *dmap; /* high resolution depth map */
27 } *odView; /* our view list */
28
29 extern int odNViews; /* number of views in our list */
30
31 extern struct ODsamp {
32 union ODfunion {
33 float prox; /* viewpoint proximity */
34 int32 next; /* next in free list */
35
36 } *f; /* free list next or proximity */
37 short (*ip)[2]; /* image position array */
38 TMbright *brt; /* encoded brightness array */
39 BYTE (*chr)[3]; /* encoded chrominance array */
40 BYTE (*rgb)[3]; /* tone-mapped color array */
41 int32 *redraw; /* redraw flags */
42 int nsamp; /* total number of samples */
43 char *base; /* base of allocated memory */
44 } odS; /* sample values */
45
46 #ifndef FL4OP
47 #define FL4OP(f,i,op) ((f)[(i)>>5] op (1L<<((i)&0x1f)))
48 #define CHK4(f,i) FL4OP(f,i,&)
49 #define SET4(f,i) FL4OP(f,i,|=)
50 #define CLR4(f,i) FL4OP(f,i,&=~)
51 #define TGL4(f,i) FL4OP(f,i,^=)
52 #define FL4NELS(n) (((n)+0x1f)>>5)
53 #define CLR4ALL(f,n) memset((char *)(f),'\0',FL4NELS(n)*sizeof(int32))
54 #endif
55
56 #define OMAXDEPTH 32000 /* maximum depth value */
57
58 #define nextfree(i) f[i].next /* free pointers */
59 #define closeness(i) f[i].prox /* viewpoint proximity */
60 #define ENDFREE (-1) /* free list terminator */
61
62 #define odClean() odInit(odS.nsamp) /* clear samples */
63 #define odDone() odInit(0) /* free samples */
64
65
66 /*****************************************************************************
67 * Interface routines:
68
69
70 int
71 odInit(nsamps) : allocate and initialize memory
72 int nsamps; : number of samples to make available
73
74 If nsamps is zero, then this becomes a deallocation routine. If nsamps
75 is the same as last time, then this merely clears all data. The dev_auxview()
76 function may be called to determine the current view(s). The odAlloc()
77 function returns the number of samples actually allocated.
78
79
80 void
81 odSample(c, d, p) : register new sample value
82 COLR c; : pixel color (RGBE)
83 FVECT d; : ray direction vector
84 FVECT p; : world intersection point
85
86 If p is NULL, then the point is at infinity.
87
88
89 void
90 odDepthMap(vn, dm) : set depth map for the given view
91 int vn; : view number
92 GLfloat *dm; : depth map
93
94 Assign the depth map associated with view number vn. The map has
95 been preallocated, and won't be freed until it is no longer needed
96 (after an odAlloc() call). All depth values are the projected
97 distance along the view direction from the view origin. If dm
98 is NULL, then there is no depth map associated with this view.
99
100
101 void
102 odRedraw(vn, x0, y0, x1, y1) : region needs to be redrawn
103 int vn; : view number
104 int x0, y0, x1, y1; : rectangle to redraw
105
106 This call indicates that the given rectangular region in view vn
107 needs to be redrawn in the next call to odUpdate().
108
109
110 void
111 odRedrawAll() : everything needs to be redrawn
112
113 Redraw everything in all views on the next call to odUpdate().
114 Unless odRemap() is called, no new tone mapping will be done.
115
116
117 void
118 odUpdate(vn) : update the current view
119 int vn; : view number
120
121 Draw all new and undrawn sample values since last call for this view.
122
123
124 void
125 odRemap(newhist) : recompute tone mapping
126 int newhist; : flag whether to clear history
127
128 Recompute the tone mapping for all the samples in all the views
129 and redraw them on the next call(s) to odUpdate(). If newhist
130 is non-zero, then clear the previous sample history.
131
132 **********************************************************************/