src/rt/preload.c

#ifndef lint
static const char       RCSid[] = "$Id: preload.c,v 2.19 2025/06/20 23:47:43 greg Exp $";
#endif
/*
 * Preload associated object structures to maximize memory sharing.
 *
 *  External symbols declared in ray.h
 */

#include "copyright.h"

#include "ray.h"
#include "otypes.h"
#include "face.h"
#include "cone.h"
#include "instance.h"
#include "mesh.h"
#include "data.h"
#include "func.h"
#include "bsdf.h"

char    *shm_boundary = NULL;           /* boundary of shared memory */


/* KEEP THIS ROUTINE CONSISTENT WITH THE DIFFERENT OBJECT FUNCTIONS! */


int
load_os(                        /* load associated data for object */
        OBJREC  *op
)
{
        DATARRAY        *dp;
        SDData          *sd;

        SDretainSet = SDretainAll;

        switch (op->otype) {
        case OBJ_FACE:          /* polygon */
                getface(op);
                return(1);
        case OBJ_CONE:          /* cone */
        case OBJ_RING:          /* disk */
        case OBJ_CYLINDER:      /* cylinder */
        case OBJ_CUP:           /* inverted cone */
        case OBJ_TUBE:          /* inverted cylinder */
                getcone(op, 1);
                return(1);
        case OBJ_INSTANCE:      /* octree instance */
                getinstance(op, IO_ALL);
                return(1);
        case OBJ_MESH:          /* mesh instance */
                getmeshinst(op, IO_ALL);
                return(1);
        case PAT_CPICT:         /* color picture */
                if (op->oargs.nsargs < 4)
                        goto sargerr;
                getpict(op->oargs.sarg[3]);
                getfunc(op, 4, 0x3<<5, 0);
                return(1);
        case PAT_CDATA:         /* color data */
                if (op->oargs.nsargs < 4)
                        goto sargerr;
                dp = getdata(op->oargs.sarg[3]);
                getdata(op->oargs.sarg[4]);
                getdata(op->oargs.sarg[5]);
                getfunc(op, 6, ((1<<dp->nd)-1)<<7, 0);
                return(1);
        case PAT_BDATA:         /* brightness data */
                if (op->oargs.nsargs < 2)
                        goto sargerr;
                dp = getdata(op->oargs.sarg[1]);
                getfunc(op, 2, ((1<<dp->nd)-1)<<3, 0);
                return(1);
        case PAT_BFUNC:         /* brightness function */
                getfunc(op, 1, 0x1, 0);
                return(1);
        case PAT_CFUNC:         /* color function */
                getfunc(op, 3, 0x7, 0);
                return(1);
        case PAT_SPECFUNC:      /* spectral function */
                getfunc(op, 1, 0, 0);
                return(1);
        case PAT_SPECFILE:      /* spectrum file */
                if (op->oargs.nsargs < 1)
                        goto sargerr;
                getdata(op->oargs.sarg[0]);
                return(1);
        case PAT_SPECDATA:      /* spectral data file */
                if (op->oargs.nsargs < 2)
                        goto sargerr;
                dp = getdata(op->oargs.sarg[1]);
                getfunc(op, 2, ((1<<(dp->nd-1)) - 1)<<3, 0);
                return(1);
        case PAT_SPECPICT:      /* spectral picture */
                if (op->oargs.nsargs < 2)
                        goto sargerr;
                getspec(op->oargs.sarg[1]);
                getfunc(op, 2, 0x3<<3, 0);
                return(1);
        case TEX_DATA:          /* texture data */
                if (op->oargs.nsargs < 6)
                        goto sargerr;
                dp = getdata(op->oargs.sarg[3]);
                getdata(op->oargs.sarg[4]);
                getdata(op->oargs.sarg[5]);
                getfunc(op, 6, ((1<<dp->nd)-1)<<7, 1);
                return(1);
        case TEX_FUNC:          /* texture function */
                getfunc(op, 3, 0x7, 1);
                return(1);
        case MIX_DATA:          /* mixture data */
                dp = getdata(op->oargs.sarg[3]);
                getfunc(op, 4, ((1<<dp->nd)-1)<<5, 0);
                return(1);
        case MIX_PICT:          /* mixture picture */
                getpict(op->oargs.sarg[3]);
                getfunc(op, 4, 0x3<<5, 0);
                return(1);
        case MIX_FUNC:          /* mixture function */
                getfunc(op, 3, 0x4, 0);
                return(1);
        case MAT_PLASTIC2:      /* anisotropic plastic */
        case MAT_METAL2:        /* anisotropic metal */
                getfunc(op, 3, 0x7, 1);
                return(1);
        case MAT_WGMDF:         /* WGMDfunc material */
                getfunc(op, 12, 0xEEE, 1);
                return(1);
        case MAT_BRTDF:         /* BRDTfunc material */
                getfunc(op, 9, 0x3f, 0);
                return(1);
        case MAT_BSDF:          /* BSDF material */
                if (op->oargs.nsargs < 6)
                        goto sargerr;
                getfunc(op, 5, 0x1d, 1);
                sd = loadBSDF(op->oargs.sarg[1]);
                if (sd != NULL) SDfreeCache(sd);
                return(1);
        case MAT_ABSDF:         /* aBSDF material */
                if (op->oargs.nsargs < 5)
                        goto sargerr;
                getfunc(op, 4, 0xe, 1);
                sd = loadBSDF(op->oargs.sarg[0]);
                if (sd != NULL) SDfreeCache(sd);
                return(1);
        case MAT_PDATA:         /* plastic BRDF data */
        case MAT_MDATA:         /* metal BRDF data */
        case MAT_TDATA:         /* trans BRDF data */
                if (op->oargs.nsargs < 2)
                        goto sargerr;
                getdata(op->oargs.sarg[1]);
                getfunc(op, 2, 0, 0);
                return(1);
        case MAT_PFUNC:         /* plastic BRDF func */
        case MAT_MFUNC:         /* metal BRDF func */
        case MAT_TFUNC:         /* trans BRDF func */
                getfunc(op, 1, 0, 0);
                return(1);
        case MAT_DIRECT1:       /* prism1 material */
                getfunc(op, 4, 0xf, 1);
                return(1);
        case MAT_DIRECT2:       /* prism2 material */
                getfunc(op, 8, 0xff, 1);
                return(1);
        }
                        /* nothing to load for the remaining types */
        return(0);
sargerr:
        objerror(op, USER, "too few string arguments");
        return 0; /* pro forma return */
}


void
preload_objs(void)              /* preload object data structures */
{
        OBJECT on;
                                /* note that nobjects may change during loop */
        for (on = 0; on < nobjects; on++)
                load_os(objptr(on));
}


void
cow_memshare(void)              /* set up copy-on-write memory sharing */
{
        if (shm_boundary != NULL)
                return;                 /* assume we're good */

        preload_objs();                 /* preload auxiliary data */
                                        /* set shared memory boundary */
        shm_boundary = (char *)malloc(16);
        strcpy(shm_boundary, "SHM_BOUNDARY");
}


void
cow_doneshare(void)             /* clear memory sharing boundary */
{
        if (shm_boundary == NULL)
                return;
                                        /* clear shared memory boundary */
        free((void *)shm_boundary);
        shm_boundary = NULL;
}
Revision:	2.20
Committed:	Fri Jun 20 23:48:28 2025 UTC (7 hours, 56 minutes ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 2.19:	+2 -2 lines
Log Message:	fix: syntax error in previous commit(!)
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	greg	2.20	static const char RCSid[] = "$Id: preload.c,v 2.19 2025/06/20 23:47:43 greg Exp $";
3	greg	2.1	#endif
4			/*
5			* Preload associated object structures to maximize memory sharing.
6	greg	2.6	*
7			* External symbols declared in ray.h
8			*/
9
10	greg	2.7	#include "copyright.h"
11	greg	2.1
12	greg	2.10	#include "ray.h"
13	greg	2.1	#include "otypes.h"
14			#include "face.h"
15			#include "cone.h"
16	greg	2.2	#include "instance.h"
17	greg	2.9	#include "mesh.h"
18	greg	2.5	#include "data.h"
19	schorsch	2.8	#include "func.h"
20	greg	2.10	#include "bsdf.h"
21	greg	2.1
22	greg	2.18	char shm_boundary = NULL; / boundary of shared memory */
23
24	greg	2.1
25	greg	2.6	/* KEEP THIS ROUTINE CONSISTENT WITH THE DIFFERENT OBJECT FUNCTIONS! */
26
27
28	greg	2.13	int
29	schorsch	2.8	load_os( /* load associated data for object */
30	greg	2.13	OBJREC *op
31	schorsch	2.8	)
32	greg	2.1	{
33	greg	2.14	DATARRAY *dp;
34			SDData *sd;
35
36			SDretainSet = SDretainAll;
37	greg	2.6
38	greg	2.1	switch (op->otype) {
39			case OBJ_FACE: /* polygon */
40			getface(op);
41			return(1);
42			case OBJ_CONE: /* cone */
43			case OBJ_RING: /* disk */
44			case OBJ_CYLINDER: /* cylinder */
45			case OBJ_CUP: /* inverted cone */
46			case OBJ_TUBE: /* inverted cylinder */
47			getcone(op, 1);
48			return(1);
49			case OBJ_INSTANCE: /* octree instance */
50			getinstance(op, IO_ALL);
51			return(1);
52	greg	2.9	case OBJ_MESH: /* mesh instance */
53			getmeshinst(op, IO_ALL);
54			return(1);
55	greg	2.5	case PAT_CPICT: /* color picture */
56			if (op->oargs.nsargs < 4)
57			goto sargerr;
58			getpict(op->oargs.sarg[3]);
59	greg	2.6	getfunc(op, 4, 0x3<<5, 0);
60	greg	2.5	return(1);
61			case PAT_CDATA: /* color data */
62	greg	2.17	if (op->oargs.nsargs < 4)
63			goto sargerr;
64	greg	2.6	dp = getdata(op->oargs.sarg[3]);
65			getdata(op->oargs.sarg[4]);
66			getdata(op->oargs.sarg[5]);
67			getfunc(op, 6, ((1<<dp->nd)-1)<<7, 0);
68			return(1);
69			case PAT_BDATA: /* brightness data */
70			if (op->oargs.nsargs < 2)
71			goto sargerr;
72			dp = getdata(op->oargs.sarg[1]);
73			getfunc(op, 2, ((1<<dp->nd)-1)<<3, 0);
74			return(1);
75			case PAT_BFUNC: /* brightness function */
76			getfunc(op, 1, 0x1, 0);
77			return(1);
78			case PAT_CFUNC: /* color function */
79			getfunc(op, 3, 0x7, 0);
80			return(1);
81	greg	2.17	case PAT_SPECFUNC: /* spectral function */
82			getfunc(op, 1, 0, 0);
83			return(1);
84			case PAT_SPECFILE: /* spectrum file */
85			if (op->oargs.nsargs < 1)
86			goto sargerr;
87			getdata(op->oargs.sarg[0]);
88			return(1);
89			case PAT_SPECDATA: /* spectral data file */
90			if (op->oargs.nsargs < 2)
91			goto sargerr;
92			dp = getdata(op->oargs.sarg[1]);
93			getfunc(op, 2, ((1<<(dp->nd-1)) - 1)<<3, 0);
94			return(1);
95			case PAT_SPECPICT: /* spectral picture */
96			if (op->oargs.nsargs < 2)
97			goto sargerr;
98			getspec(op->oargs.sarg[1]);
99			getfunc(op, 2, 0x3<<3, 0);
100			return(1);
101	greg	2.5	case TEX_DATA: /* texture data */
102			if (op->oargs.nsargs < 6)
103			goto sargerr;
104	greg	2.6	dp = getdata(op->oargs.sarg[3]);
105	greg	2.5	getdata(op->oargs.sarg[4]);
106			getdata(op->oargs.sarg[5]);
107	greg	2.6	getfunc(op, 6, ((1<<dp->nd)-1)<<7, 1);
108			return(1);
109			case TEX_FUNC: /* texture function */
110			getfunc(op, 3, 0x7, 1);
111			return(1);
112			case MIX_DATA: /* mixture data */
113			dp = getdata(op->oargs.sarg[3]);
114			getfunc(op, 4, ((1<<dp->nd)-1)<<5, 0);
115			return(1);
116			case MIX_PICT: /* mixture picture */
117			getpict(op->oargs.sarg[3]);
118			getfunc(op, 4, 0x3<<5, 0);
119			return(1);
120			case MIX_FUNC: /* mixture function */
121			getfunc(op, 3, 0x4, 0);
122			return(1);
123			case MAT_PLASTIC2: /* anisotropic plastic */
124			case MAT_METAL2: /* anisotropic metal */
125			getfunc(op, 3, 0x7, 1);
126			return(1);
127	greg	2.19	case MAT_WGMDF: /* WGMDfunc material */
128	greg	2.20	getfunc(op, 12, 0xEEE, 1);
129	greg	2.19	return(1);
130	greg	2.6	case MAT_BRTDF: /* BRDTfunc material */
131			getfunc(op, 9, 0x3f, 0);
132	greg	2.5	return(1);
133	greg	2.10	case MAT_BSDF: /* BSDF material */
134			if (op->oargs.nsargs < 6)
135			goto sargerr;
136			getfunc(op, 5, 0x1d, 1);
137	greg	2.14	sd = loadBSDF(op->oargs.sarg[1]);
138			if (sd != NULL) SDfreeCache(sd);
139	greg	2.10	return(1);
140	greg	2.16	case MAT_ABSDF: /* aBSDF material */
141	greg	2.15	if (op->oargs.nsargs < 5)
142			goto sargerr;
143			getfunc(op, 4, 0xe, 1);
144			sd = loadBSDF(op->oargs.sarg[0]);
145			if (sd != NULL) SDfreeCache(sd);
146			return(1);
147	greg	2.5	case MAT_PDATA: /* plastic BRDF data */
148			case MAT_MDATA: /* metal BRDF data */
149			case MAT_TDATA: /* trans BRDF data */
150			if (op->oargs.nsargs < 2)
151			goto sargerr;
152			getdata(op->oargs.sarg[1]);
153	greg	2.6	getfunc(op, 2, 0, 0);
154			return(1);
155			case MAT_PFUNC: /* plastic BRDF func */
156			case MAT_MFUNC: /* metal BRDF func */
157			case MAT_TFUNC: /* trans BRDF func */
158			getfunc(op, 1, 0, 0);
159			return(1);
160			case MAT_DIRECT1: /* prism1 material */
161			getfunc(op, 4, 0xf, 1);
162			return(1);
163			case MAT_DIRECT2: /* prism2 material */
164			getfunc(op, 8, 0xff, 1);
165	greg	2.5	return(1);
166	greg	2.1	}
167	greg	2.6	/* nothing to load for the remaining types */
168	greg	2.2	return(0);
169	greg	2.5	sargerr:
170			objerror(op, USER, "too few string arguments");
171	schorsch	2.8	return 0; /* pro forma return */
172	greg	2.1	}
173
174
175	greg	2.13	void
176	schorsch	2.8	preload_objs(void) /* preload object data structures */
177	greg	2.1	{
178	greg	2.13	OBJECT on;
179	greg	2.3	/* note that nobjects may change during loop */
180	greg	2.1	for (on = 0; on < nobjects; on++)
181			load_os(objptr(on));
182	greg	2.3	}
183	greg	2.18
184
185			void
186			cow_memshare(void) /* set up copy-on-write memory sharing */
187			{
188			if (shm_boundary != NULL)
189			return; /* assume we're good */
190
191			preload_objs(); /* preload auxiliary data */
192			/* set shared memory boundary */
193			shm_boundary = (char *)malloc(16);
194			strcpy(shm_boundary, "SHM_BOUNDARY");
195			}
196
197
198			void
199			cow_doneshare(void) /* clear memory sharing boundary */
200			{
201			if (shm_boundary == NULL)
202			return;
203			/* clear shared memory boundary */
204			free((void *)shm_boundary);
205			shm_boundary = NULL;
206			}