| 1 |
/* RCSid $Id: RtraceSimulManager.h,v 2.10 2024/08/03 15:38:06 greg Exp $ */ |
| 2 |
/* |
| 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 |
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 |
|
| 24 |
/// Multi-threaded simulation manager base class |
| 25 |
class RadSimulManager { |
| 26 |
char * header; // header (less intro and format) |
| 27 |
int hlen; // header string length |
| 28 |
protected: |
| 29 |
// Assign ray to subthread (fails if NThreads()<2) |
| 30 |
bool SplitRay(RAY *r); |
| 31 |
public: |
| 32 |
RadSimulManager(const char *octn = NULL) { |
| 33 |
header = NULL; hlen = 0; |
| 34 |
LoadOctree(octn); |
| 35 |
} |
| 36 |
~RadSimulManager() { |
| 37 |
Cleanup(); |
| 38 |
} |
| 39 |
/// Load octree and prepare renderer |
| 40 |
bool LoadOctree(const char *octn); |
| 41 |
/// Prepare header from previous input (or clear) |
| 42 |
/// Normally called during octree load |
| 43 |
bool NewHeader(const char *inspec=NULL); |
| 44 |
/// Add a line to header (adds newline if none) |
| 45 |
bool AddHeader(const char *str); |
| 46 |
/// Append program line to header |
| 47 |
bool AddHeader(int ac, const char *av[]); |
| 48 |
/// Get header lines or empty string |
| 49 |
const char * GetHeader() const { |
| 50 |
return hlen ? header : ""; |
| 51 |
} |
| 52 |
/// How many cores are available? |
| 53 |
static int GetNCores(); |
| 54 |
/// Set number of computation threads (0 => #cores) |
| 55 |
int SetThreadCount(int nt = 0); |
| 56 |
/// Check thread count (1 means no multi-threading) |
| 57 |
int NThreads() const { |
| 58 |
return ray_pnprocs + !ray_pnprocs; |
| 59 |
} |
| 60 |
/// How many threads are currently unoccupied? |
| 61 |
int ThreadsAvailable() const; |
| 62 |
/// Are we ready? |
| 63 |
bool Ready() const { |
| 64 |
return (octname && nobjects > 0); |
| 65 |
} |
| 66 |
/// Process a ray (in subthread), optional result |
| 67 |
bool ProcessRay(RAY *r); |
| 68 |
/// Wait for next result (or fail) |
| 69 |
bool WaitResult(RAY *r); |
| 70 |
/// Close octree, free data, return status |
| 71 |
int Cleanup(bool everything = false); |
| 72 |
}; |
| 73 |
|
| 74 |
/// Flags to control rendering operations |
| 75 |
enum {RTdoFIFO=1, RTtraceSources=2, RTlimDist=4, RTimmIrrad=8, RTmask=15}; |
| 76 |
|
| 77 |
/// rtrace-like simulation manager (at most one such object) |
| 78 |
class RtraceSimulManager : public RadSimulManager { |
| 79 |
RayReportCall * cookedCall; // callback for cooked primary rays |
| 80 |
void * ccData; // client data for cooked primary rays |
| 81 |
RayReportCall * traceCall; // call for every ray in tree |
| 82 |
void * tcData; // client data for traced rays |
| 83 |
int curFlags; // current operating flags |
| 84 |
// Call-back for global ray-tracing context |
| 85 |
static void RTracer(RAY *r); |
| 86 |
// Call-back for FIFO |
| 87 |
static int Rfifout(RAY *r); |
| 88 |
// Check for changes to render flags, etc. |
| 89 |
bool UpdateMode(); |
| 90 |
protected: |
| 91 |
RNUMBER lastRayID; // last ray ID assigned |
| 92 |
public: |
| 93 |
int rtFlags; // operation (RT*) flags |
| 94 |
RtraceSimulManager(RayReportCall *cb = NULL, void *cd = NULL, |
| 95 |
const char *octn = NULL) : RadSimulManager(octn) { |
| 96 |
lastRayID = 0; |
| 97 |
rtFlags = curFlags = 0; |
| 98 |
SetCookedCall(cb, cd); |
| 99 |
traceCall = NULL; tcData = NULL; |
| 100 |
} |
| 101 |
~RtraceSimulManager() { |
| 102 |
FlushQueue(); |
| 103 |
} |
| 104 |
/// Set number of computation threads (0 => #cores) |
| 105 |
int SetThreadCount(int nt = 0) { |
| 106 |
if (nt <= 0) nt = castonly ? 1 : GetNCores(); |
| 107 |
if (nt == NThreads()) return nt; |
| 108 |
if (FlushQueue() < 0) return 0; |
| 109 |
return RadSimulManager::SetThreadCount(nt); |
| 110 |
} |
| 111 |
/// Add ray bundle to queue w/ optional 1st ray ID |
| 112 |
int EnqueueBundle(const FVECT orig_direc[], int n, |
| 113 |
RNUMBER rID0 = 0); |
| 114 |
/// Enqueue a single ray w/ optional ray ID |
| 115 |
bool EnqueueRay(const FVECT org, const FVECT dir, |
| 116 |
RNUMBER rID = 0) { |
| 117 |
if (dir == org+1) |
| 118 |
return(EnqueueBundle((const FVECT *)org, 1, rID) > 0); |
| 119 |
FVECT orgdir[2]; |
| 120 |
VCOPY(orgdir[0], org); VCOPY(orgdir[1], dir); |
| 121 |
return(EnqueueBundle(orgdir, 1, rID) > 0); |
| 122 |
} |
| 123 |
/// Set/change cooked ray callback |
| 124 |
void SetCookedCall(RayReportCall *cb, void *cd = NULL) { |
| 125 |
if (cookedCall && (cookedCall != cb) | (ccData != cd)) |
| 126 |
FlushQueue(); |
| 127 |
cookedCall = cb; |
| 128 |
ccData = cb ? cd : NULL; |
| 129 |
} |
| 130 |
/// Set/change trace callback |
| 131 |
void SetTraceCall(RayReportCall *cb, void *cd = NULL) { |
| 132 |
traceCall = cb; |
| 133 |
tcData = cb ? cd : NULL; |
| 134 |
} |
| 135 |
/// Are we ready? |
| 136 |
bool Ready() const { |
| 137 |
return (cookedCall != NULL) | (traceCall != NULL) && |
| 138 |
RadSimulManager::Ready(); |
| 139 |
} |
| 140 |
/// Finish pending rays and complete callbacks (return #sent) |
| 141 |
int FlushQueue(); |
| 142 |
/// Close octree, free data, return status |
| 143 |
int Cleanup(bool everything = false) { |
| 144 |
SetCookedCall(NULL); |
| 145 |
SetTraceCall(NULL); |
| 146 |
rtFlags = 0; |
| 147 |
UpdateMode(); |
| 148 |
lastRayID = 0; |
| 149 |
return RadSimulManager::Cleanup(everything); |
| 150 |
} |
| 151 |
}; |
| 152 |
|
| 153 |
/// Determine if vector is all zeroes |
| 154 |
inline bool |
| 155 |
IsZeroVec(const FVECT vec) |
| 156 |
{ |
| 157 |
return (vec[0] == 0.0) & (vec[1] == 0.0) & (vec[2] == 0.0); |
| 158 |
} |
| 159 |
|
| 160 |
#endif /* RtraceSimulManager_h */ |
