}
}
-typedef struct collision_cachedtrace_s
+typedef struct collision_cachedtrace_parameters_s
{
- int next;
- int sequence;
dp_model_t *model;
+ vec3_t end;
+ vec3_t start;
+ vec3_t mins;
+ vec3_t maxs;
// const frameblend_t *frameblend;
// const skeleton_t *skeleton;
+// matrix4x4_t inversematrix;
+ int hitsupercontentsmask;
+ int type; // which type of query produced this cache entry
+ matrix4x4_t matrix;
vec3_t bodymins;
vec3_t bodymaxs;
int bodysupercontents;
- matrix4x4_t matrix;
- matrix4x4_t inversematrix;
- vec3_t start;
- vec3_t mins;
- vec3_t maxs;
- vec3_t end;
- int hitsupercontentsmask;
+}
+collision_cachedtrace_parameters_t;
+
+typedef struct collision_cachedtrace_s
+{
+ qboolean valid;
+ collision_cachedtrace_parameters_t p;
trace_t result;
}
collision_cachedtrace_t;
static int collision_cachedtrace_sequence;
static int collision_cachedtrace_hashsize;
static int *collision_cachedtrace_hash;
+static unsigned int *collision_cachedtrace_arrayfullhashindex;
+static unsigned int *collision_cachedtrace_arrayhashindex;
+static unsigned int *collision_cachedtrace_arraynext;
+static unsigned char *collision_cachedtrace_arrayused;
+static qboolean collision_cachedtrace_rebuildhash;
void Collision_Cache_Reset(qboolean resetlimits)
{
Mem_Free(collision_cachedtrace_hash);
if (collision_cachedtrace_array)
Mem_Free(collision_cachedtrace_array);
+ if (collision_cachedtrace_arrayfullhashindex)
+ Mem_Free(collision_cachedtrace_arrayfullhashindex);
+ if (collision_cachedtrace_arrayhashindex)
+ Mem_Free(collision_cachedtrace_arrayhashindex);
+ if (collision_cachedtrace_arraynext)
+ Mem_Free(collision_cachedtrace_arraynext);
+ if (collision_cachedtrace_arrayused)
+ Mem_Free(collision_cachedtrace_arrayused);
if (resetlimits || !collision_cachedtrace_max)
- collision_cachedtrace_max = 1024;
+ collision_cachedtrace_max = collision_cache.integer ? 128 : 1;
collision_cachedtrace_firstfree = 1;
collision_cachedtrace_lastused = 0;
- collision_cachedtrace_hashsize = collision_cachedtrace_max * 2;
+ collision_cachedtrace_hashsize = collision_cachedtrace_max;
collision_cachedtrace_array = (collision_cachedtrace_t *)Mem_Alloc(collision_cachedtrace_mempool, collision_cachedtrace_max * sizeof(collision_cachedtrace_t));
collision_cachedtrace_hash = (int *)Mem_Alloc(collision_cachedtrace_mempool, collision_cachedtrace_hashsize * sizeof(int));
+ collision_cachedtrace_arrayfullhashindex = (unsigned int *)Mem_Alloc(collision_cachedtrace_mempool, collision_cachedtrace_max * sizeof(unsigned int));
+ collision_cachedtrace_arrayhashindex = (unsigned int *)Mem_Alloc(collision_cachedtrace_mempool, collision_cachedtrace_max * sizeof(unsigned int));
+ collision_cachedtrace_arraynext = (unsigned int *)Mem_Alloc(collision_cachedtrace_mempool, collision_cachedtrace_max * sizeof(unsigned int));
+ collision_cachedtrace_arrayused = (unsigned char *)Mem_Alloc(collision_cachedtrace_mempool, collision_cachedtrace_max * sizeof(unsigned char));
collision_cachedtrace_sequence = 1;
+ collision_cachedtrace_rebuildhash = false;
}
void Collision_Cache_Init(mempool_t *mempool)
Collision_Cache_Reset(true);
}
-void Collision_Cache_NewFrame(void)
+void Collision_Cache_RebuildHash(void)
{
- int hashindex;
int index;
- int *p;
- // unlink all stale traces
- for (hashindex = 0;hashindex < collision_cachedtrace_hashsize;hashindex++)
+ int range = collision_cachedtrace_lastused + 1;
+ int sequence = collision_cachedtrace_sequence;
+ int firstfree = collision_cachedtrace_max;
+ int lastused = 0;
+ int *hash = collision_cachedtrace_hash;
+ unsigned int hashindex;
+ unsigned int *arrayhashindex = collision_cachedtrace_arrayhashindex;
+ unsigned int *arraynext = collision_cachedtrace_arraynext;
+ collision_cachedtrace_rebuildhash = false;
+ memset(collision_cachedtrace_hash, 0, collision_cachedtrace_hashsize * sizeof(int));
+ for (index = 1;index < range;index++)
{
- if (!collision_cachedtrace_hash[hashindex])
- continue;
- p = &collision_cachedtrace_hash[hashindex];
- while ((index = *p))
+ if (collision_cachedtrace_arrayused[index] == sequence)
{
- if (collision_cachedtrace_array[index].sequence != collision_cachedtrace_sequence)
- {
- if (collision_cachedtrace_firstfree > index)
- collision_cachedtrace_firstfree = index;
- *p = collision_cachedtrace_array[index].next;
- collision_cachedtrace_array[index].sequence = 0;
- //memset(&collision_cachedtrace_array[index], 0, sizeof(collision_cachedtrace_array[index]));
- }
- else
- p = &collision_cachedtrace_array[index].next;
+ hashindex = arrayhashindex[index];
+ arraynext[index] = hash[hashindex];
+ hash[hashindex] = index;
+ lastused = index;
+ }
+ else
+ {
+ if (firstfree > index)
+ firstfree = index;
+ collision_cachedtrace_arrayused[index] = 0;
}
}
- // shrink used range if possible
- index = collision_cachedtrace_lastused;
- while (index && collision_cachedtrace_array[index].sequence == 0)
- index--;
- collision_cachedtrace_lastused = index;
- // increment sequence
- collision_cachedtrace_sequence++;
- // do not allow sequence to wrap to 0
- if (collision_cachedtrace_sequence >= 1<<30)
+ collision_cachedtrace_firstfree = firstfree;
+ collision_cachedtrace_lastused = lastused;
+}
+
+void Collision_Cache_NewFrame(void)
+{
+ if (collision_cache.integer)
+ {
+ if (collision_cachedtrace_max < 128)
+ Collision_Cache_Reset(true);
+ }
+ else
+ {
+ if (collision_cachedtrace_max > 1)
+ Collision_Cache_Reset(true);
+ }
+ // rebuild hash if sequence would overflow byte, otherwise increment
+ if (collision_cachedtrace_sequence == 255)
+ {
+ Collision_Cache_RebuildHash();
collision_cachedtrace_sequence = 1;
+ }
+ else
+ {
+ collision_cachedtrace_rebuildhash = true;
+ collision_cachedtrace_sequence++;
+ }
}
-static collision_cachedtrace_t *Collision_Cache_Lookup(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, const vec3_t bodymins, const vec3_t bodymaxs, int bodysupercontents, const matrix4x4_t *matrix, const matrix4x4_t *inversematrix, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask)
+static unsigned int Collision_Cache_HashIndexForArray(unsigned int *array, unsigned int size)
+{
+ unsigned int i;
+ unsigned int hashindex = 0;
+ // this is a super-cheesy checksum, designed only for speed
+ for (i = 0;i < size;i++)
+ hashindex += array[i] * (1 + i);
+ return hashindex;
+}
+
+static collision_cachedtrace_t *Collision_Cache_Lookup(int type, dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, const vec3_t bodymins, const vec3_t bodymaxs, int bodysupercontents, const matrix4x4_t *matrix, const matrix4x4_t *inversematrix, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask)
{
int hashindex = 0;
+ unsigned int fullhashindex;
int index = 0;
+ int range;
+ int sequence = collision_cachedtrace_sequence;
+ int *hash = collision_cachedtrace_hash;
+ unsigned int *arrayfullhashindex = collision_cachedtrace_arrayfullhashindex;
+ unsigned int *arraynext = collision_cachedtrace_arraynext;
collision_cachedtrace_t *cached = collision_cachedtrace_array + index;
+ collision_cachedtrace_parameters_t params;
// all non-cached traces use the same index
if ((frameblend && frameblend[0].lerp != 1) || (skeleton && skeleton->relativetransforms))
r_refdef.stats.collisioncache_animated++;
else
{
// cached trace lookup
- hashindex = (int)(((size_t)model + (size_t) + (size_t)(start[0] * 53 + start[1] * 207 + start[2] * 97 + end[0] * 37 + end[1] * 743 + end[2] * 13) + bodysupercontents + hitsupercontentsmask) % collision_cachedtrace_hashsize);
- for (index = collision_cachedtrace_hash[hashindex];index;index = cached->next)
+ params.type = type;
+ params.model = model;
+ VectorCopy(bodymins, params.bodymins);
+ VectorCopy(bodymaxs, params.bodymaxs);
+ params.bodysupercontents = bodysupercontents;
+ VectorCopy(start, params.start);
+ VectorCopy(mins, params.mins);
+ VectorCopy(maxs, params.maxs);
+ VectorCopy(end, params.end);
+ params.hitsupercontentsmask = hitsupercontentsmask;
+ params.matrix = *matrix;
+ //params.inversematrix = *inversematrix;
+ fullhashindex = Collision_Cache_HashIndexForArray((unsigned int *)¶ms, sizeof(params) / sizeof(unsigned int));
+ //fullhashindex = Collision_Cache_HashIndexForArray((unsigned int *)¶ms, 10);
+ hashindex = (int)(fullhashindex % (unsigned int)collision_cachedtrace_hashsize);
+ for (index = hash[hashindex];index;index = arraynext[index])
{
+ if (arrayfullhashindex[index] != fullhashindex)
+ continue;
cached = collision_cachedtrace_array + index;
- if (VectorCompare(cached->start, start)
- && VectorCompare(cached->end, end)
- && cached->model == model
- && VectorCompare(cached->bodymins, bodymins)
- && VectorCompare(cached->bodymaxs, bodymaxs)
- && cached->bodysupercontents == bodysupercontents
- && VectorCompare(cached->mins, mins)
- && VectorCompare(cached->maxs, maxs)
- && cached->hitsupercontentsmask == hitsupercontentsmask
- && !memcmp(&cached->matrix, matrix, sizeof(*matrix)))
- {
- r_refdef.stats.collisioncache_cached++;
- return cached; // found a match
- }
+ if (memcmp(&cached->p, ¶ms, sizeof(params)))
+ continue;
+ // found a matching trace in the cache
+ r_refdef.stats.collisioncache_cached++;
+ cached->valid = true;
+ collision_cachedtrace_arrayused[index] = collision_cachedtrace_sequence;
+ return cached;
}
r_refdef.stats.collisioncache_traced++;
// find an unused cache entry
- for (index = collision_cachedtrace_firstfree;index <= collision_cachedtrace_lastused;index++)
- if (!collision_cachedtrace_array[index].sequence)
+ for (index = collision_cachedtrace_firstfree, range = collision_cachedtrace_max;index < range;index++)
+ if (collision_cachedtrace_arrayused[index] == 0)
break;
- collision_cachedtrace_firstfree = index;
- if (index > collision_cachedtrace_lastused)
+ if (index == range)
{
- // see if we need to reset the cache for growth
- if (collision_cachedtrace_max <= index)
+ // all claimed, but probably some are stale...
+ for (index = 1, range = collision_cachedtrace_max;index < range;index++)
+ if (collision_cachedtrace_arrayused[index] != sequence)
+ break;
+ if (index < range)
+ {
+ // found a stale one, rebuild the hash
+ Collision_Cache_RebuildHash();
+ }
+ else
{
+ // we need to grow the cache
collision_cachedtrace_max *= 2;
Collision_Cache_Reset(false);
- collision_cachedtrace_firstfree = index = 1;
+ index = 1;
}
- collision_cachedtrace_lastused = index;
}
// link the new cache entry into the hash bucket
+ collision_cachedtrace_firstfree = index + 1;
+ if (collision_cachedtrace_lastused < index)
+ collision_cachedtrace_lastused = index;
cached = collision_cachedtrace_array + index;
- cached->next = collision_cachedtrace_hash[hashindex];
+ collision_cachedtrace_arraynext[index] = collision_cachedtrace_hash[hashindex];
collision_cachedtrace_hash[hashindex] = index;
- cached->model = model;
- VectorCopy(bodymins, cached->bodymins);
- VectorCopy(bodymaxs, cached->bodymaxs);
- cached->bodysupercontents = bodysupercontents;
- VectorCopy(start, cached->start);
- VectorCopy(mins, cached->mins);
- VectorCopy(maxs, cached->maxs);
- VectorCopy(end, cached->end);
- cached->hitsupercontentsmask = hitsupercontentsmask;
- cached->matrix = *matrix;
- cached->inversematrix = *inversematrix;
+ collision_cachedtrace_arrayhashindex[index] = hashindex;
+ cached->valid = false;
+ cached->p = params;
+ collision_cachedtrace_arrayfullhashindex[index] = fullhashindex;
+ collision_cachedtrace_arrayused[index] = collision_cachedtrace_sequence;
}
- cached->sequence = 0;
return cached;
}
void Collision_ClipToGenericEntity(trace_t *trace, dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, const vec3_t bodymins, const vec3_t bodymaxs, int bodysupercontents, matrix4x4_t *matrix, matrix4x4_t *inversematrix, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask)
{
float starttransformed[3], endtransformed[3];
- collision_cachedtrace_t *cached = Collision_Cache_Lookup(model, frameblend, skeleton, bodymins, bodymaxs, bodysupercontents, matrix, inversematrix, start, mins, maxs, end, hitsupercontentsmask);
- if (cached->sequence)
+ collision_cachedtrace_t *cached = Collision_Cache_Lookup(3, model, frameblend, skeleton, bodymins, bodymaxs, bodysupercontents, matrix, inversematrix, start, mins, maxs, end, hitsupercontentsmask);
+ if (cached->valid)
{
- cached->sequence = collision_cachedtrace_sequence;
*trace = cached->result;
return;
}
// NOTE: this relies on plane.dist being directly after plane.normal
Matrix4x4_TransformPositivePlane(matrix, trace->plane.normal[0], trace->plane.normal[1], trace->plane.normal[2], trace->plane.dist, trace->plane.normal);
- cached->sequence = collision_cachedtrace_sequence;
cached->result = *trace;
}
void Collision_ClipToWorld(trace_t *trace, dp_model_t *model, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontents)
{
- collision_cachedtrace_t *cached = Collision_Cache_Lookup(model, NULL, NULL, vec3_origin, vec3_origin, 0, &identitymatrix, &identitymatrix, start, mins, maxs, end, hitsupercontents);
- if (cached->sequence)
+ collision_cachedtrace_t *cached = Collision_Cache_Lookup(3, model, NULL, NULL, vec3_origin, vec3_origin, 0, &identitymatrix, &identitymatrix, start, mins, maxs, end, hitsupercontents);
+ if (cached->valid)
{
- cached->sequence = collision_cachedtrace_sequence;
*trace = cached->result;
return;
}
trace->realfraction = bound(0, trace->realfraction, 1);
VectorLerp(start, trace->fraction, end, trace->endpos);
- cached->sequence = collision_cachedtrace_sequence;
cached->result = *trace;
}
void Collision_ClipLineToGenericEntity(trace_t *trace, dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, const vec3_t bodymins, const vec3_t bodymaxs, int bodysupercontents, matrix4x4_t *matrix, matrix4x4_t *inversematrix, const vec3_t start, const vec3_t end, int hitsupercontentsmask, qboolean hitsurfaces)
{
float starttransformed[3], endtransformed[3];
- collision_cachedtrace_t *cached = Collision_Cache_Lookup(model, frameblend, skeleton, bodymins, bodymaxs, bodysupercontents, matrix, inversematrix, start, vec3_origin, vec3_origin, end, hitsupercontentsmask);
- if (cached->sequence)
+ collision_cachedtrace_t *cached = Collision_Cache_Lookup(2, model, frameblend, skeleton, bodymins, bodymaxs, bodysupercontents, matrix, inversematrix, start, vec3_origin, vec3_origin, end, hitsupercontentsmask);
+ if (cached->valid)
{
- cached->sequence = collision_cachedtrace_sequence;
*trace = cached->result;
return;
}
// NOTE: this relies on plane.dist being directly after plane.normal
Matrix4x4_TransformPositivePlane(matrix, trace->plane.normal[0], trace->plane.normal[1], trace->plane.normal[2], trace->plane.dist, trace->plane.normal);
- cached->sequence = collision_cachedtrace_sequence;
cached->result = *trace;
}
void Collision_ClipLineToWorld(trace_t *trace, dp_model_t *model, const vec3_t start, const vec3_t end, int hitsupercontents, qboolean hitsurfaces)
{
- collision_cachedtrace_t *cached = Collision_Cache_Lookup(model, NULL, NULL, vec3_origin, vec3_origin, 0, &identitymatrix, &identitymatrix, start, vec3_origin, vec3_origin, end, hitsupercontents);
- if (cached->sequence)
+ collision_cachedtrace_t *cached = Collision_Cache_Lookup(2, model, NULL, NULL, vec3_origin, vec3_origin, 0, &identitymatrix, &identitymatrix, start, vec3_origin, vec3_origin, end, hitsupercontents);
+ if (cached->valid)
{
- cached->sequence = collision_cachedtrace_sequence;
*trace = cached->result;
return;
}
trace->realfraction = bound(0, trace->realfraction, 1);
VectorLerp(start, trace->fraction, end, trace->endpos);
- cached->sequence = collision_cachedtrace_sequence;
cached->result = *trace;
}
void Collision_ClipPointToGenericEntity(trace_t *trace, dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, const vec3_t bodymins, const vec3_t bodymaxs, int bodysupercontents, matrix4x4_t *matrix, matrix4x4_t *inversematrix, const vec3_t start, int hitsupercontentsmask)
{
float starttransformed[3];
- collision_cachedtrace_t *cached = Collision_Cache_Lookup(model, frameblend, skeleton, bodymins, bodymaxs, bodysupercontents, matrix, inversematrix, start, vec3_origin, vec3_origin, start, hitsupercontentsmask);
- if (cached->sequence)
+ collision_cachedtrace_t *cached = Collision_Cache_Lookup(1, model, frameblend, skeleton, bodymins, bodymaxs, bodysupercontents, matrix, inversematrix, start, vec3_origin, vec3_origin, start, hitsupercontentsmask);
+ if (cached->valid)
{
- cached->sequence = collision_cachedtrace_sequence;
*trace = cached->result;
return;
}
// NOTE: this relies on plane.dist being directly after plane.normal
Matrix4x4_TransformPositivePlane(matrix, trace->plane.normal[0], trace->plane.normal[1], trace->plane.normal[2], trace->plane.dist, trace->plane.normal);
- cached->sequence = collision_cachedtrace_sequence;
cached->result = *trace;
}
void Collision_ClipPointToWorld(trace_t *trace, dp_model_t *model, const vec3_t start, int hitsupercontents)
{
- collision_cachedtrace_t *cached = Collision_Cache_Lookup(model, NULL, NULL, vec3_origin, vec3_origin, 0, &identitymatrix, &identitymatrix, start, vec3_origin, vec3_origin, start, hitsupercontents);
- if (cached->sequence)
+ collision_cachedtrace_t *cached = Collision_Cache_Lookup(1, model, NULL, NULL, vec3_origin, vec3_origin, 0, &identitymatrix, &identitymatrix, start, vec3_origin, vec3_origin, start, hitsupercontents);
+ if (cached->valid)
{
- cached->sequence = collision_cachedtrace_sequence;
*trace = cached->result;
return;
}
model->TracePoint(model, NULL, NULL, trace, start, hitsupercontents);
VectorCopy(start, trace->endpos);
- cached->sequence = collision_cachedtrace_sequence;
cached->result = *trace;
}
projects / xonotic / darkplaces.git / commitdiff