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root/radiance/ray/src/hd/rhd_odraw.h
Revision: 3.11
Committed: Mon Jul 14 22:24:00 2003 UTC (20 years, 8 months ago) by schorsch
Content type: text/plain
Branch: MAIN
Changes since 3.10: +13 -1 lines
Log Message:
Instrumented headers against multiple inclusion and for use from C++.
Moved includes in headers out of "C" scope.

File Contents

# User Rev Content
1 schorsch 3.11 /* RCSid $Id: rhd_odraw.h,v 3.10 2003/06/30 14:59:11 schorsch Exp $ */
2 gwlarson 3.1 /*
3     * Header for OpenGL cone drawing routines with depth buffer checks.
4 greg 3.9 *
5     * Include after "standard.h"
6 gwlarson 3.1 */
7 schorsch 3.11 #ifndef _RAD_RHD_ODRAW_H_
8     #define _RAD_RHD_ODRAW_H_
9 gwlarson 3.1
10     #include "color.h"
11     #include "tonemap.h"
12     #include "rhdriver.h"
13    
14 schorsch 3.11 #ifdef __cplusplus
15     extern "C" {
16     #endif
17    
18 gwlarson 3.1 extern struct ODview {
19 gwlarson 3.4 int sfirst, snext; /* first sample and first in next view */
20 gwlarson 3.1 short hhi, vhi; /* screen image resolution */
21     short hlow, vlow; /* block resolution */
22 gwlarson 3.6 int n2redraw; /* approx. number of samples needing redraw */
23 gwlarson 3.1 struct ODblock {
24     short nsamp; /* number of samples in block */
25     short nused; /* number actually allocated */
26     int first; /* first sample in this block */
27     int free; /* index for block free list */
28 gwlarson 3.2 float pthresh; /* proximity threshold */
29 gwlarson 3.1 } *bmap; /* low resolution image map */
30 greg 3.9 int32 *emap; /* low resolution edge presence map */
31     int32 *pmap; /* high resolution presence map */
32 gwlarson 3.1 GLfloat *dmap; /* high resolution depth map */
33     } *odView; /* our view list */
34    
35     extern int odNViews; /* number of views in our list */
36    
37     extern struct ODsamp {
38     union ODfunion {
39     float prox; /* viewpoint proximity */
40 greg 3.9 int32 next; /* next in free list */
41 gwlarson 3.1
42     } *f; /* free list next or proximity */
43     short (*ip)[2]; /* image position array */
44     TMbright *brt; /* encoded brightness array */
45     BYTE (*chr)[3]; /* encoded chrominance array */
46     BYTE (*rgb)[3]; /* tone-mapped color array */
47 greg 3.9 int32 *redraw; /* redraw flags */
48 gwlarson 3.1 int nsamp; /* total number of samples */
49     char *base; /* base of allocated memory */
50     } odS; /* sample values */
51    
52     #ifndef FL4OP
53     #define FL4OP(f,i,op) ((f)[(i)>>5] op (1L<<((i)&0x1f)))
54     #define CHK4(f,i) FL4OP(f,i,&)
55     #define SET4(f,i) FL4OP(f,i,|=)
56     #define CLR4(f,i) FL4OP(f,i,&=~)
57     #define TGL4(f,i) FL4OP(f,i,^=)
58     #define FL4NELS(n) (((n)+0x1f)>>5)
59 schorsch 3.10 #define CLR4ALL(f,n) memset((char *)(f),'\0',FL4NELS(n)*sizeof(int32))
60 gwlarson 3.1 #endif
61    
62     #define OMAXDEPTH 32000 /* maximum depth value */
63    
64     #define nextfree(i) f[i].next /* free pointers */
65     #define closeness(i) f[i].prox /* viewpoint proximity */
66     #define ENDFREE (-1) /* free list terminator */
67    
68     #define odClean() odInit(odS.nsamp) /* clear samples */
69     #define odDone() odInit(0) /* free samples */
70    
71    
72     /*****************************************************************************
73     * Interface routines:
74    
75    
76     int
77     odInit(nsamps) : allocate and initialize memory
78     int nsamps; : number of samples to make available
79    
80     If nsamps is zero, then this becomes a deallocation routine. If nsamps
81     is the same as last time, then this merely clears all data. The dev_auxview()
82     function may be called to determine the current view(s). The odAlloc()
83     function returns the number of samples actually allocated.
84    
85    
86     void
87     odSample(c, d, p) : register new sample value
88     COLR c; : pixel color (RGBE)
89     FVECT d; : ray direction vector
90     FVECT p; : world intersection point
91    
92     If p is NULL, then the point is at infinity.
93    
94    
95     void
96     odDepthMap(vn, dm) : set depth map for the given view
97     int vn; : view number
98     GLfloat *dm; : depth map
99    
100     Assign the depth map associated with view number vn. The map has
101     been preallocated, and won't be freed until it is no longer needed
102     (after an odAlloc() call). All depth values are the projected
103     distance along the view direction from the view origin. If dm
104     is NULL, then there is no depth map associated with this view.
105    
106    
107     void
108     odRedraw(vn, x0, y0, x1, y1) : region needs to be redrawn
109     int vn; : view number
110     int x0, y0, x1, y1; : rectangle to redraw
111    
112     This call indicates that the given rectangular region in view vn
113     needs to be redrawn in the next call to odUpdate().
114    
115    
116     void
117 gwlarson 3.5 odRedrawAll() : everything needs to be redrawn
118    
119     Redraw everything in all views on the next call to odUpdate().
120     Unless odRemap() is called, no new tone mapping will be done.
121    
122    
123     void
124 gwlarson 3.1 odUpdate(vn) : update the current view
125     int vn; : view number
126    
127     Draw all new and undrawn sample values since last call for this view.
128    
129    
130     void
131 gwlarson 3.2 odRemap(newhist) : recompute tone mapping
132     int newhist; : flag whether to clear history
133 gwlarson 3.1
134     Recompute the tone mapping for all the samples in all the views
135 gwlarson 3.2 and redraw them on the next call(s) to odUpdate(). If newhist
136     is non-zero, then clear the previous sample history.
137 gwlarson 3.1
138     **********************************************************************/
139 schorsch 3.11
140     #ifdef __cplusplus
141     }
142     #endif
143     #endif /* _RAD_RHD_ODRAW_H_ */
144