ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/hd/rhd_odraw.h
Revision: 3.13
Committed: Fri Jan 7 20:33:02 2005 UTC (19 years, 2 months ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: rad3R7P2, rad3R7P1, rad4R0, rad3R8, rad3R9
Changes since 3.12: +3 -1 lines
Log Message:
Modernized tone-mapping routines with structure pointer r.t. stack

File Contents

# Content
1 /* RCSid $Id: rhd_odraw.h,v 3.12 2004/01/01 11:21:55 schorsch Exp $ */
2 /*
3 * Header for OpenGL cone drawing routines with depth buffer checks.
4 *
5 * Include after "standard.h"
6 */
7 #ifndef _RAD_RHD_ODRAW_H_
8 #define _RAD_RHD_ODRAW_H_
9
10 #include "color.h"
11 #include "tonemap.h"
12 #include "rhdriver.h"
13
14 #ifdef __cplusplus
15 extern "C" {
16 #endif
17
18 extern struct ODview {
19 int sfirst, snext; /* first sample and first in next view */
20 short hhi, vhi; /* screen image resolution */
21 short hlow, vlow; /* block resolution */
22 int n2redraw; /* approx. number of samples needing redraw */
23 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 float pthresh; /* proximity threshold */
29 } *bmap; /* low resolution image map */
30 int32 *emap; /* low resolution edge presence map */
31 int32 *pmap; /* high resolution presence map */
32 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 TMstruct *tmGlobal; /* global tone-mapping structure */
38
39 extern struct ODsamp {
40 union ODfunion {
41 float prox; /* viewpoint proximity */
42 int32 next; /* next in free list */
43
44 } *f; /* free list next or proximity */
45 short (*ip)[2]; /* image position array */
46 TMbright *brt; /* encoded brightness array */
47 BYTE (*chr)[3]; /* encoded chrominance array */
48 BYTE (*rgb)[3]; /* tone-mapped color array */
49 int32 *redraw; /* redraw flags */
50 int nsamp; /* total number of samples */
51 char *base; /* base of allocated memory */
52 } odS; /* sample values */
53
54 #ifndef FL4OP
55 #define FL4OP(f,i,op) ((f)[(i)>>5] op (1L<<((i)&0x1f)))
56 #define CHK4(f,i) FL4OP(f,i,&)
57 #define SET4(f,i) FL4OP(f,i,|=)
58 #define CLR4(f,i) FL4OP(f,i,&=~)
59 #define TGL4(f,i) FL4OP(f,i,^=)
60 #define FL4NELS(n) (((n)+0x1f)>>5)
61 #define CLR4ALL(f,n) memset((char *)(f),'\0',FL4NELS(n)*sizeof(int32))
62 #endif
63
64 #define OMAXDEPTH 32000 /* maximum depth value */
65
66 #define nextfree(i) f[i].next /* free pointers */
67 #define closeness(i) f[i].prox /* viewpoint proximity */
68 #define ENDFREE (-1) /* free list terminator */
69
70 #define odClean() odInit(odS.nsamp) /* clear samples */
71 #define odDone() odInit(0) /* free samples */
72
73
74 /*****************************************************************************
75 * Interface routines:
76
77
78 int
79 odInit(nsamps) : allocate and initialize memory
80 int nsamps; : number of samples to make available
81
82 If nsamps is zero, then this becomes a deallocation routine. If nsamps
83 is the same as last time, then this merely clears all data. The dev_auxview()
84 function may be called to determine the current view(s). The odAlloc()
85 function returns the number of samples actually allocated.
86
87
88 void
89 odSample(c, d, p) : register new sample value
90 COLR c; : pixel color (RGBE)
91 FVECT d; : ray direction vector
92 FVECT p; : world intersection point
93
94 If p is NULL, then the point is at infinity.
95
96
97 void
98 odDepthMap(vn, dm) : set depth map for the given view
99 int vn; : view number
100 GLfloat *dm; : depth map
101
102 Assign the depth map associated with view number vn. The map has
103 been preallocated, and won't be freed until it is no longer needed
104 (after an odAlloc() call). All depth values are the projected
105 distance along the view direction from the view origin. If dm
106 is NULL, then there is no depth map associated with this view.
107
108
109 void
110 odRedraw(vn, x0, y0, x1, y1) : region needs to be redrawn
111 int vn; : view number
112 int x0, y0, x1, y1; : rectangle to redraw
113
114 This call indicates that the given rectangular region in view vn
115 needs to be redrawn in the next call to odUpdate().
116
117
118 void
119 odRedrawAll() : everything needs to be redrawn
120
121 Redraw everything in all views on the next call to odUpdate().
122 Unless odRemap() is called, no new tone mapping will be done.
123
124
125 void
126 odUpdate(vn) : update the current view
127 int vn; : view number
128
129 Draw all new and undrawn sample values since last call for this view.
130
131
132 void
133 odRemap(newhist) : recompute tone mapping
134 int newhist; : flag whether to clear history
135
136 Recompute the tone mapping for all the samples in all the views
137 and redraw them on the next call(s) to odUpdate(). If newhist
138 is non-zero, then clear the previous sample history.
139
140 **********************************************************************/
141
142 /* rhd_geom.c */
143 void gmNewGeom( char *file);
144 extern void gmEndGeom(void);
145 extern int gmDrawGeom(void);
146 extern void gmDrawPortals(int r, int g, int b, int a);
147 extern void gmDepthLimit( double dl[2], FVECT vorg, FVECT vdir);
148 extern void gmNewPortal(char *pflist);
149 extern int gmEndPortal(void);
150 /* rhd_odraw.c */
151 extern int odInit(int n);
152 extern void odSample(COLR c, FVECT d, FVECT p);
153 extern void odRemap(int newhist);
154 extern void odRedrawAll(void);
155 extern void odRedraw(int vn, int hmin, int vmin, int hmax, int vmax);
156 extern void odDepthMap(int vn, GLfloat *dm);
157 extern void odUpdate(int vn);
158
159
160 #ifdef __cplusplus
161 }
162 #endif
163 #endif /* _RAD_RHD_ODRAW_H_ */
164