src/rt/RtraceSimulManager.h

/* RCSid $Id: RtraceSimulManager.h,v 2.8 2024/05/02 22:10:43 greg Exp $ */
/*
 *  RtraceSimulManager.h
 *
 *      Rtrace simulation manager class declaration (along with base class)
 *      Enqueuing rays will block caller iff #rays >= ThreadsAvail()
 *      Reporting call-backs made from EnqueBundle() and FlushQueue()
 *
 *  Created by Greg Ward on 11/10/22.
 */

#ifndef RtraceSimulManager_h
#define RtraceSimulManager_h

#include "ray.h"

extern char *   octname;        // global octree name

extern int      castonly;       // doing ray-casting only?

/// Ray reporting callback method -- returns # successfully reported, -1 to abort
typedef int     RayReportCall(RAY *r, void *cd);

/// Multi-threaded simulation manager base class
class RadSimulManager {
        char *                  header;                 // header (less intro and format)
protected:
                                // Assign ray to subthread (fails if NThreads()<2)
        bool                    SplitRay(RAY *r);
public:
                                RadSimulManager(const char *octn = NULL) {
                                        header = NULL;
                                        LoadOctree(octn);
                                }
                                ~RadSimulManager() {
                                        Cleanup();
                                }
                                /// Load octree and prepare renderer
        bool                    LoadOctree(const char *octn);
                                /// Prepare header from previous input (or clear)
                                /// Normally called during octree load
        bool                    NewHeader(const char *fname=NULL);
                                /// Add a string to header (adds newline if none)
        bool                    AddHeader(const char *str);
                                /// Append program line to header
        bool                    AddHeader(int ac, const char *av[]);
                                /// Get header lines if any
        const char *            GetHeader() const {
                                        return header;
                                }
                                /// How many cores are available?
        static int              GetNCores();
                                /// Set number of computation threads (0 => #cores)
        int                     SetThreadCount(int nt = 0);
                                /// Check thread count (1 means no multi-threading)
        int                     NThreads() const {
                                        return ray_pnprocs + !ray_pnprocs;
                                }
                                /// How many threads are currently unoccupied?
        int                     ThreadsAvailable() const;
                                /// Are we ready?
        bool                    Ready() const {
                                        return (octname && nobjects > 0);
                                }
                                /// Process a ray (in subthread), optional result
        bool                    ProcessRay(RAY *r);
                                /// Wait for next result (or fail)
        bool                    WaitResult(RAY *r);
                                /// Close octree, free data, return status
        int                     Cleanup(bool everything = false);
};

/// Flags to control rendering operations
enum {RTdoFIFO=1, RTtraceSources=2, RTlimDist=4, RTimmIrrad=8, RTmask=15};

/// rtrace-like simulation manager (at most one such object)
class RtraceSimulManager : public RadSimulManager {
        RayReportCall *         cookedCall;     // callback for cooked primary rays
        void *                  ccData;         // client data for cooked primary rays
        RayReportCall *         traceCall;      // call for every ray in tree
        void *                  tcData;         // client data for traced rays
        int                     curFlags;       // current operating flags
                                // Call-back for global ray-tracing context
        static void             RTracer(RAY *r);
                                // Call-back for FIFO
        static int              Rfifout(RAY *r);
                                // Check for changes to render flags, etc.
        bool                    UpdateMode();
protected:
        RNUMBER                 lastRayID;      // last ray ID assigned
public:
        int                     rtFlags;        // operation (RT*) flags
                                RtraceSimulManager(RayReportCall *cb = NULL, void *cd = NULL,
                                                const char *octn = NULL) : RadSimulManager(octn) {
                                        lastRayID = 0;
                                        rtFlags = curFlags = 0;
                                        SetCookedCall(cb, cd);
                                        traceCall = NULL; tcData = NULL;
                                }
                                ~RtraceSimulManager() {
                                        FlushQueue();
                                }
                                /// Set number of computation threads (0 => #cores)
        int                     SetThreadCount(int nt = 0) {
                                        if (nt <= 0) nt = castonly ? 1 : GetNCores();
                                        if (nt == NThreads()) return nt;
                                        if (FlushQueue() < 0) return 0;
                                        return RadSimulManager::SetThreadCount(nt);
                                }
                                /// Add ray bundle to queue w/ optional 1st ray ID
        int                     EnqueueBundle(const FVECT orig_direc[], int n,
                                                RNUMBER rID0 = 0);
                                /// Enqueue a single ray w/ optional ray ID
        bool                    EnqueueRay(const FVECT org, const FVECT dir,
                                                RNUMBER rID = 0) {
                                        if (dir == org+1)
                                                return(EnqueueBundle((const FVECT *)org, 1, rID) > 0);
                                        FVECT   orgdir[2];
                                        VCOPY(orgdir[0], org); VCOPY(orgdir[1], dir);
                                        return(EnqueueBundle(orgdir, 1, rID) > 0);
                                }
                                /// Set/change cooked ray callback
        void                    SetCookedCall(RayReportCall *cb, void *cd = NULL) {
                                        if (cookedCall && (cookedCall != cb) | (ccData != cd))
                                                FlushQueue();
                                        cookedCall = cb;
                                        ccData = cb ? cd : NULL;
                                }
                                /// Set/change trace callback
        void                    SetTraceCall(RayReportCall *cb, void *cd = NULL) {
                                        traceCall = cb;
                                        tcData = cb ? cd : NULL;
                                }
                                /// Are we ready?
        bool                    Ready() const {
                                        return (cookedCall != NULL) | (traceCall != NULL) &&
                                                RadSimulManager::Ready();
                                }
                                /// Finish pending rays and complete callbacks (return #sent)
        int                     FlushQueue();
                                /// Close octree, free data, return status
        int                     Cleanup(bool everything = false) {
                                        SetCookedCall(NULL);
                                        SetTraceCall(NULL);
                                        rtFlags = 0;
                                        UpdateMode();
                                        lastRayID = 0;
                                        return RadSimulManager::Cleanup(everything);
                                }
};

/// Determine if vector is all zeroes
inline bool
IsZeroVec(const FVECT vec)
{
        return (vec[0] == 0.0) & (vec[1] == 0.0) & (vec[2] == 0.0);
}

#endif /* RtraceSimulManager_h */
Revision:	2.9
Committed:	Sat Aug 3 01:54:46 2024 UTC (8 months, 4 weeks ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.8:	+14 -1 lines
Log Message:	feat(rxtrace): Added header manipulation to base class
#	User	Rev	Content
1	greg	2.9	/* RCSid $Id: RtraceSimulManager.h,v 2.8 2024/05/02 22:10:43 greg Exp $ */
2	greg	2.1	/*
3			* RtraceSimulManager.h
4			*
5			* Rtrace simulation manager class declaration (along with base class)
6			* Enqueuing rays will block caller iff #rays >= ThreadsAvail()
7			* Reporting call-backs made from EnqueBundle() and FlushQueue()
8			*
9			* Created by Greg Ward on 11/10/22.
10			*/
11
12			#ifndef RtraceSimulManager_h
13			#define RtraceSimulManager_h
14
15			#include "ray.h"
16
17			extern char * octname; // global octree name
18
19	greg	2.6	extern int castonly; // doing ray-casting only?
20
21			/// Ray reporting callback method -- returns # successfully reported, -1 to abort
22			typedef int RayReportCall(RAY r, void cd);
23	greg	2.1
24			/// Multi-threaded simulation manager base class
25			class RadSimulManager {
26	greg	2.9	char * header; // header (less intro and format)
27	greg	2.4	protected:
28			// Assign ray to subthread (fails if NThreads()<2)
29			bool SplitRay(RAY *r);
30	greg	2.1	public:
31			RadSimulManager(const char *octn = NULL) {
32	greg	2.9	header = NULL;
33	greg	2.1	LoadOctree(octn);
34			}
35			~RadSimulManager() {
36			Cleanup();
37			}
38			/// Load octree and prepare renderer
39			bool LoadOctree(const char *octn);
40	greg	2.9	/// Prepare header from previous input (or clear)
41			/// Normally called during octree load
42			bool NewHeader(const char *fname=NULL);
43			/// Add a string to header (adds newline if none)
44			bool AddHeader(const char *str);
45			/// Append program line to header
46			bool AddHeader(int ac, const char *av[]);
47			/// Get header lines if any
48			const char * GetHeader() const {
49			return header;
50			}
51	greg	2.5	/// How many cores are available?
52	greg	2.3	static int GetNCores();
53	greg	2.1	/// Set number of computation threads (0 => #cores)
54			int SetThreadCount(int nt = 0);
55			/// Check thread count (1 means no multi-threading)
56			int NThreads() const {
57	greg	2.6	return ray_pnprocs + !ray_pnprocs;
58	greg	2.1	}
59			/// How many threads are currently unoccupied?
60			int ThreadsAvailable() const;
61			/// Are we ready?
62			bool Ready() const {
63	greg	2.6	return (octname && nobjects > 0);
64	greg	2.1	}
65	greg	2.4	/// Process a ray (in subthread), optional result
66			bool ProcessRay(RAY *r);
67			/// Wait for next result (or fail)
68			bool WaitResult(RAY *r);
69	greg	2.1	/// Close octree, free data, return status
70	greg	2.3	int Cleanup(bool everything = false);
71	greg	2.1	};
72
73			/// Flags to control rendering operations
74			enum {RTdoFIFO=1, RTtraceSources=2, RTlimDist=4, RTimmIrrad=8, RTmask=15};
75
76			/// rtrace-like simulation manager (at most one such object)
77			class RtraceSimulManager : public RadSimulManager {
78			RayReportCall * cookedCall; // callback for cooked primary rays
79			void * ccData; // client data for cooked primary rays
80			RayReportCall * traceCall; // call for every ray in tree
81			void * tcData; // client data for traced rays
82			int curFlags; // current operating flags
83			// Call-back for global ray-tracing context
84			static void RTracer(RAY *r);
85	greg	2.6	// Call-back for FIFO
86			static int Rfifout(RAY *r);
87	greg	2.1	// Check for changes to render flags, etc.
88			bool UpdateMode();
89			protected:
90			RNUMBER lastRayID; // last ray ID assigned
91			public:
92			int rtFlags; // operation (RT*) flags
93			RtraceSimulManager(RayReportCall cb = NULL, void cd = NULL,
94			const char *octn = NULL) : RadSimulManager(octn) {
95			lastRayID = 0;
96			rtFlags = curFlags = 0;
97			SetCookedCall(cb, cd);
98			traceCall = NULL; tcData = NULL;
99			}
100	greg	2.3	~RtraceSimulManager() {
101			FlushQueue();
102			}
103	greg	2.2	/// Set number of computation threads (0 => #cores)
104			int SetThreadCount(int nt = 0) {
105	greg	2.6	if (nt <= 0) nt = castonly ? 1 : GetNCores();
106	greg	2.2	if (nt == NThreads()) return nt;
107	greg	2.6	if (FlushQueue() < 0) return 0;
108	greg	2.2	return RadSimulManager::SetThreadCount(nt);
109			}
110	greg	2.1	/// Add ray bundle to queue w/ optional 1st ray ID
111			int EnqueueBundle(const FVECT orig_direc[], int n,
112			RNUMBER rID0 = 0);
113			/// Enqueue a single ray w/ optional ray ID
114			bool EnqueueRay(const FVECT org, const FVECT dir,
115			RNUMBER rID = 0) {
116			if (dir == org+1)
117	greg	2.3	return(EnqueueBundle((const FVECT *)org, 1, rID) > 0);
118	greg	2.1	FVECT orgdir[2];
119			VCOPY(orgdir[0], org); VCOPY(orgdir[1], dir);
120	greg	2.3	return(EnqueueBundle(orgdir, 1, rID) > 0);
121	greg	2.1	}
122	greg	2.6	/// Set/change cooked ray callback
123	greg	2.1	void SetCookedCall(RayReportCall cb, void cd = NULL) {
124			if (cookedCall && (cookedCall != cb) \| (ccData != cd))
125			FlushQueue();
126			cookedCall = cb;
127	greg	2.6	ccData = cb ? cd : NULL;
128	greg	2.1	}
129			/// Set/change trace callback
130			void SetTraceCall(RayReportCall cb, void cd = NULL) {
131			traceCall = cb;
132	greg	2.6	tcData = cb ? cd : NULL;
133	greg	2.1	}
134			/// Are we ready?
135			bool Ready() const {
136			return (cookedCall != NULL) \| (traceCall != NULL) &&
137			RadSimulManager::Ready();
138			}
139	greg	2.4	/// Finish pending rays and complete callbacks (return #sent)
140			int FlushQueue();
141	greg	2.1	/// Close octree, free data, return status
142	greg	2.3	int Cleanup(bool everything = false) {
143	greg	2.1	SetCookedCall(NULL);
144			SetTraceCall(NULL);
145			rtFlags = 0;
146			UpdateMode();
147			lastRayID = 0;
148	greg	2.3	return RadSimulManager::Cleanup(everything);
149	greg	2.1	}
150			};
151
152			/// Determine if vector is all zeroes
153			inline bool
154			IsZeroVec(const FVECT vec)
155			{
156			return (vec[0] == 0.0) & (vec[1] == 0.0) & (vec[2] == 0.0);
157			}
158
159			#endif /* RtraceSimulManager_h */