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renderva.cpp
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// renderva.cpp: handles the occlusion and rendering of vertex arrays
#include "engine.h"
static inline void drawtris(GLsizei numindices, const GLvoid *indices, ushort minvert, ushort maxvert)
{
glDrawRangeElements_(GL_TRIANGLES, minvert, maxvert, numindices, GL_UNSIGNED_SHORT, indices);
glde++;
}
static inline void drawvatris(vtxarray *va, GLsizei numindices, int offset)
{
drawtris(numindices, (ushort *)0 + va->eoffset + offset, va->minvert, va->maxvert);
}
static inline void drawvaskytris(vtxarray *va)
{
drawtris(va->sky, (ushort *)0 + va->skyoffset, va->minvert, va->maxvert);
}
///////// view frustrum culling ///////////////////////
plane vfcP[5]; // perpindictular vectors to view frustrum bounding planes
float vfcDfog; // far plane culling distance (fog limit).
float vfcDnear[5], vfcDfar[5];
vtxarray *visibleva = NULL;
bool isfoggedsphere(float rad, const vec &cv)
{
loopi(4) if(vfcP[i].dist(cv) < -rad) return true;
float dist = vfcP[4].dist(cv);
return dist < -rad || dist > vfcDfog + rad;
}
int isvisiblesphere(float rad, const vec &cv)
{
int v = VFC_FULL_VISIBLE;
float dist;
loopi(5)
{
dist = vfcP[i].dist(cv);
if(dist < -rad) return VFC_NOT_VISIBLE;
if(dist < rad) v = VFC_PART_VISIBLE;
}
dist -= vfcDfog;
if(dist > rad) return VFC_FOGGED; //VFC_NOT_VISIBLE; // culling when fog is closer than size of world results in HOM
if(dist > -rad) v = VFC_PART_VISIBLE;
return v;
}
static inline int ishiddencube(const ivec &o, int size)
{
loopi(5) if(o.dist(vfcP[i]) < -vfcDfar[i]*size) return true;
return false;
}
static inline int isfoggedcube(const ivec &o, int size)
{
loopi(4) if(o.dist(vfcP[i]) < -vfcDfar[i]*size) return true;
float dist = o.dist(vfcP[4]);
return dist < -vfcDfar[4]*size || dist > vfcDfog - vfcDnear[4]*size;
}
int isvisiblecube(const ivec &o, int size)
{
int v = VFC_FULL_VISIBLE;
float dist;
loopi(5)
{
dist = o.dist(vfcP[i]);
if(dist < -vfcDfar[i]*size) return VFC_NOT_VISIBLE;
if(dist < -vfcDnear[i]*size) v = VFC_PART_VISIBLE;
}
dist -= vfcDfog;
if(dist > -vfcDnear[4]*size) return VFC_FOGGED;
if(dist > -vfcDfar[4]*size) v = VFC_PART_VISIBLE;
return v;
}
int isvisiblebb(const ivec &bo, const ivec &br)
{
int v = VFC_FULL_VISIBLE;
float dnear, dfar;
loopi(5)
{
const plane &p = vfcP[i];
dnear = dfar = bo.dist(p);
if(p.x > 0) dfar += p.x*br.x; else dnear += p.x*br.x;
if(p.y > 0) dfar += p.y*br.y; else dnear += p.y*br.y;
if(p.z > 0) dfar += p.z*br.z; else dnear += p.z*br.z;
if(dfar < 0) return VFC_NOT_VISIBLE;
if(dnear < 0) v = VFC_PART_VISIBLE;
}
if(dnear > vfcDfog) return VFC_FOGGED;
if(dfar > vfcDfog) v = VFC_PART_VISIBLE;
return v;
}
static inline float vadist(vtxarray *va, const vec &p)
{
return p.dist_to_bb(va->bbmin, va->bbmax);
}
#define VASORTSIZE 64
static vtxarray *vasort[VASORTSIZE];
static inline void addvisibleva(vtxarray *va)
{
float dist = vadist(va, camera1->o);
va->distance = int(dist); /*cv.dist(camera1->o) - va->size*SQRT3/2*/
int hash = clamp(int(dist*VASORTSIZE/worldsize), 0, VASORTSIZE-1);
vtxarray **prev = &vasort[hash], *cur = vasort[hash];
while(cur && va->distance >= cur->distance)
{
prev = &cur->next;
cur = cur->next;
}
va->next = cur;
*prev = va;
}
void sortvisiblevas()
{
visibleva = NULL;
vtxarray **last = &visibleva;
loopi(VASORTSIZE) if(vasort[i])
{
vtxarray *va = vasort[i];
*last = va;
while(va->next) va = va->next;
last = &va->next;
}
}
template<bool fullvis, bool resetocclude>
static inline void findvisiblevas(vector<vtxarray *> &vas)
{
loopv(vas)
{
vtxarray &v = *vas[i];
int prevvfc = v.curvfc;
v.curvfc = fullvis ? VFC_FULL_VISIBLE : isvisiblecube(v.o, v.size);
if(v.curvfc != VFC_NOT_VISIBLE)
{
if(pvsoccluded(v.o, v.size))
{
v.curvfc += PVS_FULL_VISIBLE - VFC_FULL_VISIBLE;
continue;
}
bool resetchildren = prevvfc >= VFC_NOT_VISIBLE || resetocclude;
if(resetchildren)
{
v.occluded = !v.texs ? OCCLUDE_GEOM : OCCLUDE_NOTHING;
v.query = NULL;
}
addvisibleva(&v);
if(v.children.length())
{
if(fullvis || v.curvfc == VFC_FULL_VISIBLE)
{
if(resetchildren) findvisiblevas<true, true>(v.children);
else findvisiblevas<true, false>(v.children);
}
else if(resetchildren) findvisiblevas<false, true>(v.children);
else findvisiblevas<false, false>(v.children);
}
}
}
}
void findvisiblevas()
{
memset(vasort, 0, sizeof(vasort));
findvisiblevas<false, false>(varoot);
sortvisiblevas();
}
void calcvfcD()
{
loopi(5)
{
plane &p = vfcP[i];
vfcDnear[i] = vfcDfar[i] = 0;
loopk(3) if(p[k] > 0) vfcDfar[i] += p[k];
else vfcDnear[i] += p[k];
}
}
void setvfcP(const vec &bbmin, const vec &bbmax)
{
vec4 px = camprojmatrix.rowx(), py = camprojmatrix.rowy(), pz = camprojmatrix.rowz(), pw = camprojmatrix.roww();
vfcP[0] = plane(vec4(pw).mul(-bbmin.x).add(px)).normalize(); // left plane
vfcP[1] = plane(vec4(pw).mul(bbmax.x).sub(px)).normalize(); // right plane
vfcP[2] = plane(vec4(pw).mul(-bbmin.y).add(py)).normalize(); // bottom plane
vfcP[3] = plane(vec4(pw).mul(bbmax.y).sub(py)).normalize(); // top plane
vfcP[4] = plane(vec4(pw).add(pz)).normalize(); // near/far planes
vfcDfog = min(calcfogcull(), float(farplane));
calcvfcD();
}
plane oldvfcP[5];
void savevfcP()
{
memcpy(oldvfcP, vfcP, sizeof(vfcP));
}
void restorevfcP()
{
memcpy(vfcP, oldvfcP, sizeof(vfcP));
calcvfcD();
}
void visiblecubes(bool cull)
{
if(cull)
{
setvfcP();
findvisiblevas();
}
else
{
memset(vfcP, 0, sizeof(vfcP));
vfcDfog = farplane;
memset(vfcDnear, 0, sizeof(vfcDnear));
memset(vfcDfar, 0, sizeof(vfcDfar));
visibleva = NULL;
loopv(valist)
{
vtxarray *va = valist[i];
va->distance = 0;
va->curvfc = VFC_FULL_VISIBLE;
va->occluded = !va->texs ? OCCLUDE_GEOM : OCCLUDE_NOTHING;
va->query = NULL;
va->next = visibleva;
visibleva = va;
}
}
}
///////// occlusion queries /////////////
#define MAXQUERY 2048
#define MAXQUERYFRAMES 2
int deferquery = 0;
struct queryframe
{
int cur, max, defer;
occludequery queries[MAXQUERY];
queryframe() : cur(0), max(0), defer(0) {}
void flip()
{
loopi(cur) queries[i].owner = NULL;
for(; defer > 0 && max < MAXQUERY; defer--)
{
queries[max].owner = NULL;
queries[max].fragments = -1;
glGenQueries_(1, &queries[max++].id);
}
cur = defer = 0;
}
occludequery *newquery(void *owner)
{
if(cur >= max)
{
if(max >= MAXQUERY) return NULL;
if(deferquery)
{
if(max + defer < MAXQUERY) defer++;
return NULL;
}
glGenQueries_(1, &queries[max++].id);
}
occludequery *query = &queries[cur++];
query->owner = owner;
query->fragments = -1;
return query;
}
void reset() { loopi(max) queries[i].owner = NULL; }
void cleanup()
{
loopi(max)
{
glDeleteQueries_(1, &queries[i].id);
queries[i].owner = NULL;
}
cur = max = defer = 0;
}
};
static queryframe queryframes[MAXQUERYFRAMES];
static uint flipquery = 0;
int getnumqueries()
{
return queryframes[flipquery].cur;
}
void flipqueries()
{
flipquery = (flipquery + 1) % MAXQUERYFRAMES;
queryframes[flipquery].flip();
}
occludequery *newquery(void *owner)
{
return queryframes[flipquery].newquery(owner);
}
void resetqueries()
{
loopi(MAXQUERYFRAMES) queryframes[i].reset();
}
void clearqueries()
{
loopi(MAXQUERYFRAMES) queryframes[i].cleanup();
}
VARF(0, oqany, 0, 0, 2, clearqueries());
VAR(0, oqfrags, 0, 8, 64);
VAR(0, oqwait, 0, 1, 1);
static inline GLenum querytarget()
{
return oqany && hasOQ2 ? (oqany > 1 && hasES3 ? GL_ANY_SAMPLES_PASSED_CONSERVATIVE : GL_ANY_SAMPLES_PASSED) : GL_SAMPLES_PASSED;
}
void startquery(occludequery *query)
{
glBeginQuery_(querytarget(), query->id);
}
void endquery(occludequery *query)
{
glEndQuery_(querytarget());
}
bool checkquery(occludequery *query, bool nowait)
{
if(query->fragments < 0)
{
if(nowait || !oqwait)
{
GLint avail;
glGetQueryObjectiv_(query->id, GL_QUERY_RESULT_AVAILABLE, &avail);
if(!avail) return false;
}
GLuint fragments;
glGetQueryObjectuiv_(query->id, GL_QUERY_RESULT, &fragments);
query->fragments = querytarget() == GL_SAMPLES_PASSED || !fragments ? int(fragments) : oqfrags;
}
return query->fragments < oqfrags;
}
static GLuint bbvbo = 0, bbebo = 0;
static void setupbb()
{
if(!bbvbo)
{
glGenBuffers_(1, &bbvbo);
gle::bindvbo(bbvbo);
vec verts[8];
loopi(8) verts[i] = vec(i&1, (i>>1)&1, (i>>2)&1);
glBufferData_(GL_ARRAY_BUFFER, sizeof(verts), verts, GL_STATIC_DRAW);
gle::clearvbo();
}
if(!bbebo)
{
glGenBuffers_(1, &bbebo);
gle::bindebo(bbebo);
GLushort tris[3*2*6];
#define GENFACEORIENT(orient, v0, v1, v2, v3) do { \
int offset = orient*3*2; \
tris[offset + 0] = v0; \
tris[offset + 1] = v1; \
tris[offset + 2] = v2; \
tris[offset + 3] = v0; \
tris[offset + 4] = v2; \
tris[offset + 5] = v3; \
} while(0);
#define GENFACEVERT(orient, vert, ox,oy,oz, rx,ry,rz) (ox | oy | oz)
GENFACEVERTS(0, 1, 0, 2, 0, 4, , , , , , )
#undef GENFACEORIENT
#undef GENFACEVERT
glBufferData_(GL_ELEMENT_ARRAY_BUFFER, sizeof(tris), tris, GL_STATIC_DRAW);
gle::clearebo();
}
}
static void cleanupbb()
{
if(bbvbo) { glDeleteBuffers_(1, &bbvbo); bbvbo = 0; }
if(bbebo) { glDeleteBuffers_(1, &bbebo); bbebo = 0; }
}
void startbb(bool mask)
{
setupbb();
gle::bindvbo(bbvbo);
gle::bindebo(bbebo);
gle::vertexpointer(sizeof(vec), (const vec *)0);
gle::enablevertex();
SETSHADER(bbquery);
if(mask)
{
glDepthMask(GL_FALSE);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
}
}
void endbb(bool mask)
{
gle::disablevertex();
gle::clearvbo();
gle::clearebo();
if(mask)
{
glDepthMask(GL_TRUE);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
}
}
void drawbb(const ivec &bo, const ivec &br)
{
LOCALPARAMF(bborigin, bo.x, bo.y, bo.z);
LOCALPARAMF(bbsize, br.x, br.y, br.z);
glDrawRangeElements_(GL_TRIANGLES, 0, 8-1, 3*2*6, GL_UNSIGNED_SHORT, (ushort *)0);
xtraverts += 8;
}
extern int octaentsize;
static octaentities *visiblemms, **lastvisiblemms;
bool mapmodeltransparent(extentity &e)
{
if(e.attrs[4] > 0 && e.attrs[4] < 100) return true;
if(mapmodels.inrange(e.attrs[0]))
{
mapmodelinfo &mmi = mapmodels[e.attrs[0]];
model *m = loadlodmodel(mmi.m ? mmi.m : loadmodel(mmi.name), e.o, e.attrs[15]);
if(m && m->alphablended()) return true;
#if 0
if(m && m->alphatested(true)) return true;
#endif
}
return false;
}
bool mapmodelvisible(extentity &e, int n, int colvis)
{
if(editmode && colvis&1) return true;
bool ingroup = editmode && (enthover == n || entgroup.find(n) >= 0);
if(!ingroup && (e.flags&EF_NOVIS || e.flags&EF_DYNAMIC || !checkmapvariant(e.attrs[13]) || !checkmapeffects(e.attrs[14]) || !mapmodels.inrange(e.attrs[0]))) return false;
if(colvis&2 && (e.flags&EF_NOCOLLIDE || e.flags&EF_DYNAMIC)) return false;
if(e.lastemit)
{
if(e.flags&EF_HIDE)
{
if(e.spawned()) return false;
}
else if(colvis && e.lastemit > 0)
{
int millis = lastmillis-e.lastemit, delay = entities::triggertime(e, true);
if(e.spawned() ? millis > delay : millis < delay) return false;
}
else if((colvis&2 || e.lastemit < 0) && e.spawned()) return false;
}
mapmodelinfo &mmi = mapmodels[e.attrs[0]];
model *m = loadlodmodel(mmi.m ? mmi.m : loadmodel(mmi.name), e.o, e.attrs[15]);
if(!m) return false;
return true;
}
void findvisiblemms(const vector<extentity *> &ents, bool doquery)
{
visiblemms = NULL;
lastvisiblemms = &visiblemms;
for(vtxarray *va = visibleva; va; va = va->next) if(va->occluded < OCCLUDE_BB && va->curvfc < VFC_FOGGED) loopv(va->mapmodels)
{
octaentities *oe = va->mapmodels[i];
if(isfoggedcube(oe->o, oe->size) || pvsoccluded(oe->bbmin, oe->bbmax)) continue;
bool occluded = doquery && oe->query && oe->query->owner == oe && checkquery(oe->query);
if(occluded)
{
oe->distance = -1;
oe->next = NULL;
*lastvisiblemms = oe;
lastvisiblemms = &oe->next;
}
else
{
int visible = 0;
loopv(oe->mapmodels)
{
extentity &e = *ents[oe->mapmodels[i]];
if(!mapmodelvisible(e, oe->mapmodels[i]) || mapmodeltransparent(e)) continue;
e.flags |= EF_RENDER;
++visible;
}
if(!visible) continue;
oe->distance = int(camera1->o.dist_to_bb(oe->o, oe->size));
octaentities **prev = &visiblemms, *cur = visiblemms;
while(cur && cur->distance >= 0 && oe->distance > cur->distance)
{
prev = &cur->next;
cur = cur->next;
}
if(*prev == NULL) lastvisiblemms = &oe->next;
oe->next = *prev;
*prev = oe;
}
}
}
VAR(0, oqmm, 0, 4, 8);
VAR(0, mmanimoverride, -1, 0, ANIM_ALL);
void getmapmodelstate(extentity &e, entmodelstate &mdl)
{
int anim = (e.attrs[16] > 0 ? e.attrs[16] : ANIM_MAPMODEL);
mdl.anim = anim|ANIM_LOOP;
mdl.basetime = e.attrs[17];
if(e.lastemit)
{
mdl.anim = e.spawned() ? ANIM_TRIGGER_ON : ANIM_TRIGGER_OFF;
if(e.lastemit > 0 && lastmillis-e.lastemit < entities::triggertime(e)) mdl.basetime = e.lastemit;
else mdl.anim |= ANIM_END;
}
if(mmanimoverride)
{
mdl.anim = (mmanimoverride<0 ? ANIM_ALL : mmanimoverride)|ANIM_LOOP;
mdl.basetime = 0;
}
mdl.yaw = e.attrs[1];
mdl.pitch = e.attrs[2];
mdl.roll = e.attrs[3];
mdl.color = vec4(1, 1, 1, e.attrs[4] > 0 && e.attrs[4] < 100 ? e.attrs[4]/100.f : 1);
mdl.size = e.attrs[5] ? max(e.attrs[5]/100.f, 1e-3f) : 1.f;
if(e.attrs[8] || e.attrs[9])
{
vec color = game::getpalette(e.attrs[8], e.attrs[9]);
if(e.attrs[7]) color.mul(vec::fromcolor(e.attrs[7]));
mdl.material[0] = bvec::fromcolor(color);
}
else if(e.attrs[7]) mdl.material[0] = bvec::fromcolor(e.attrs[7]);
if(e.attrs[10]) mdl.yaw += e.attrs[10]*lastmillis/1000.0f;
if(e.attrs[11]) mdl.pitch += e.attrs[11]*lastmillis/1000.0f;
if(e.attrs[12]) mdl.roll += e.attrs[12]*lastmillis/1000.0f;
if(e.attrs[10] || e.attrs[11] || e.attrs[12]) mdl.flags |= MDL_FORCEDYNAMIC;
mdl.lodoffset = e.attrs[15];
if(e.attrs[17] > 0) mdl.speed = 1/float(e.attrs[17]/100.f);
}
static inline void rendermapmodelent(extentity &e, int n, bool tpass)
{
if(!mapmodelvisible(e, n)) return;
bool blended = mapmodeltransparent(e);
if(blended != tpass) return;
entmodelstate mdl;
mdl.o = e.o;
mdl.flags = MDL_CULL_VFC|MDL_CULL_DIST;
getmapmodelstate(e, mdl);
if(!tpass) mdl.color.a = 1;
rendermapmodel(e.attrs[0], mdl, tpass);
}
void rendermapmodels()
{
static int skipoq = 0;
bool doquery = !drawtex && oqfrags && oqmm;
const vector<extentity *> &ents = entities::getents();
findvisiblemms(ents, doquery);
for(octaentities *oe = visiblemms; oe; oe = oe->next) if(oe->distance>=0)
{
bool rendered = false;
loopv(oe->mapmodels)
{
extentity &e = *ents[oe->mapmodels[i]];
if(!(e.flags&EF_RENDER)) continue;
if(!rendered)
{
rendered = true;
oe->query = doquery && oe->distance>0 && !(++skipoq%oqmm) ? newquery(oe) : NULL;
if(oe->query) startmodelquery(oe->query);
}
rendermapmodelent(e, oe->mapmodels[i], false);
e.flags &= ~EF_RENDER;
}
if(rendered && oe->query) endmodelquery();
}
rendermapmodelbatches();
clearbatchedmapmodels();
bool queried = false;
for(octaentities *oe = visiblemms; oe; oe = oe->next) if(oe->distance<0)
{
oe->query = doquery && !camera1->o.insidebb(oe->bbmin, oe->bbmax, 1) ? newquery(oe) : NULL;
if(!oe->query) continue;
if(!queried)
{
startbb();
queried = true;
}
startquery(oe->query);
drawbb(oe->bbmin, ivec(oe->bbmax).sub(oe->bbmin));
endquery(oe->query);
}
if(queried)
{
endbb();
}
}
void rendertransparentmapmodels()
{
const vector<extentity *> &ents = entities::getents();
for(vtxarray *va = visibleva; va; va = va->next) if(va->occluded < OCCLUDE_BB && va->curvfc < VFC_FOGGED) loopv(va->mapmodels)
{
octaentities *oe = va->mapmodels[i];
if(isfoggedcube(oe->o, oe->size) || pvsoccluded(oe->bbmin, oe->bbmax)) continue;
loopv(oe->mapmodels)
{
extentity &e = *ents[oe->mapmodels[i]];
if(!mapmodelvisible(e, oe->mapmodels[i]) || !mapmodeltransparent(e)) continue;
rendermapmodelent(e, oe->mapmodels[i], true);
}
}
}
static inline bool bbinsideva(const ivec &bo, const ivec &br, vtxarray *va)
{
return bo.x >= va->bbmin.x && bo.y >= va->bbmin.y && bo.z >= va->bbmin.z &&
br.x <= va->bbmax.x && br.y <= va->bbmax.y && br.z <= va->bbmax.z;
}
static inline bool bboccluded(const ivec &bo, const ivec &br, cube *c, const ivec &o, int size)
{
loopoctabox(o, size, bo, br)
{
ivec co(i, o, size);
if(c[i].ext && c[i].ext->va)
{
vtxarray *va = c[i].ext->va;
if(va->curvfc >= VFC_FOGGED || (va->occluded >= OCCLUDE_BB && bbinsideva(bo, br, va))) continue;
}
if(c[i].children && bboccluded(bo, br, c[i].children, co, size>>1)) continue;
return false;
}
return true;
}
bool bboccluded(const ivec &bo, const ivec &br)
{
int diff = (bo.x^br.x) | (bo.y^br.y) | (bo.z^br.z);
if(diff&~((1<<worldscale)-1)) return false;
int scale = worldscale-1;
if(diff&(1<<scale)) return bboccluded(bo, br, worldroot, ivec(0, 0, 0), 1<<scale);
cube *c = &worldroot[octastep(bo.x, bo.y, bo.z, scale)];
if(c->ext && c->ext->va)
{
vtxarray *va = c->ext->va;
if(va->curvfc >= VFC_FOGGED || (va->occluded >= OCCLUDE_BB && bbinsideva(bo, br, va))) return true;
}
scale--;
while(c->children && !(diff&(1<<scale)))
{
c = &c->children[octastep(bo.x, bo.y, bo.z, scale)];
if(c->ext && c->ext->va)
{
vtxarray *va = c->ext->va;
if(va->curvfc >= VFC_FOGGED || (va->occluded >= OCCLUDE_BB && bbinsideva(bo, br, va))) return true;
}
scale--;
}
if(c->children) return bboccluded(bo, br, c->children, ivec(bo).mask(~((2<<scale)-1)), 1<<scale);
return false;
}
VAR(IDF_PERSIST, outline, 0, 1, 1);
CVAR0(IDF_PERSIST, outlinecolour, 0);
VAR(0, dtoutline, 0, 1, 1);
void renderoutline()
{
ldrnotextureshader->set();
gle::enablevertex();
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
gle::color(outlinecolour);
enablepolygonoffset(GL_POLYGON_OFFSET_LINE);
if(!dtoutline) glDisable(GL_DEPTH_TEST);
vtxarray *prev = NULL;
for(vtxarray *va = visibleva; va; va = va->next) if(va->occluded < OCCLUDE_BB)
{
if((!va->texs || va->occluded >= OCCLUDE_GEOM) && !va->alphaback && !va->alphafront && !va->refracttris) continue;
if(!prev || va->vbuf != prev->vbuf)
{
gle::bindvbo(va->vbuf);
gle::bindebo(va->ebuf);
const vertex *ptr = 0;
gle::vertexpointer(sizeof(vertex), ptr->pos.v);
}
if(va->texs && va->occluded < OCCLUDE_GEOM)
{
drawvatris(va, 3*va->tris, 0);
xtravertsva += va->verts;
}
if(va->alphatris)
{
drawvatris(va, 3*va->alphatris, 3*(va->tris + va->blendtris));
xtravertsva += 3*va->alphatris;
}
prev = va;
}
if(!dtoutline) glEnable(GL_DEPTH_TEST);
disablepolygonoffset(GL_POLYGON_OFFSET_LINE);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
gle::clearvbo();
gle::clearebo();
gle::disablevertex();
}
CVAR0(IDF_PERSIST, blendbrushcolour, 0x0000C0);
void renderblendbrush(GLuint tex, float x, float y, float w, float h)
{
SETSHADER(blendbrush);
gle::enablevertex();
glDepthFunc(GL_LEQUAL);
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glBindTexture(GL_TEXTURE_2D, tex);
gle::color(blendbrushcolour, 0x40);
LOCALPARAMF(texgenS, 1.0f/w, 0, 0, -x/w);
LOCALPARAMF(texgenT, 0, 1.0f/h, 0, -y/h);
vtxarray *prev = NULL;
for(vtxarray *va = visibleva; va; va = va->next) if(va->texs && va->occluded < OCCLUDE_GEOM)
{
if(va->o.x + va->size <= x || va->o.y + va->size <= y || va->o.x >= x + w || va->o.y >= y + h) continue;
if(!prev || va->vbuf != prev->vbuf)
{
gle::bindvbo(va->vbuf);
gle::bindebo(va->ebuf);
const vertex *ptr = 0;
gle::vertexpointer(sizeof(vertex), ptr->pos.v);
}
drawvatris(va, 3*va->tris, 0);
xtravertsva += va->verts;
prev = va;
}
glDisable(GL_BLEND);
glDepthFunc(GL_LESS);
gle::clearvbo();
gle::clearebo();
gle::disablevertex();
}
int calcbbsidemask(const ivec &bbmin, const ivec &bbmax, const vec &lightpos, float lightradius, float bias)
{
vec pmin = vec(bbmin).sub(lightpos).div(lightradius), pmax = vec(bbmax).sub(lightpos).div(lightradius);
int mask = 0x3F;
float dp1 = pmax.x + pmax.y, dn1 = pmax.x - pmin.y, ap1 = fabs(dp1), an1 = fabs(dn1),
dp2 = pmin.x + pmin.y, dn2 = pmin.x - pmax.y, ap2 = fabs(dp2), an2 = fabs(dn2);
if(ap1 > bias*an1 && ap2 > bias*an2)
mask &= (3<<4)
| (dp1 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2))
| (dp2 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
if(an1 > bias*ap1 && an2 > bias*ap2)
mask &= (3<<4)
| (dn1 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2))
| (dn2 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
dp1 = pmax.y + pmax.z, dn1 = pmax.y - pmin.z, ap1 = fabs(dp1), an1 = fabs(dn1),
dp2 = pmin.y + pmin.z, dn2 = pmin.y - pmax.z, ap2 = fabs(dp2), an2 = fabs(dn2);
if(ap1 > bias*an1 && ap2 > bias*an2)
mask &= (3<<0)
| (dp1 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4))
| (dp2 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
if(an1 > bias*ap1 && an2 > bias*ap2)
mask &= (3<<0)
| (dn1 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4))
| (dn2 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
dp1 = pmax.z + pmax.x, dn1 = pmax.z - pmin.x, ap1 = fabs(dp1), an1 = fabs(dn1),
dp2 = pmin.z + pmin.x, dn2 = pmin.z - pmax.x, ap2 = fabs(dp2), an2 = fabs(dn2);
if(ap1 > bias*an1 && ap2 > bias*an2)
mask &= (3<<2)
| (dp1 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0))
| (dp2 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
if(an1 > bias*ap1 && an2 > bias*ap2)
mask &= (3<<2)
| (dn1 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0))
| (dn2 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
return mask;
}
int calcspheresidemask(const vec &p, float radius, float bias)
{
// p is in the cubemap's local coordinate system
// bias = border/(size - border)
float dxyp = p.x + p.y, dxyn = p.x - p.y, axyp = fabs(dxyp), axyn = fabs(dxyn),
dyzp = p.y + p.z, dyzn = p.y - p.z, ayzp = fabs(dyzp), ayzn = fabs(dyzn),
dzxp = p.z + p.x, dzxn = p.z - p.x, azxp = fabs(dzxp), azxn = fabs(dzxn);
int mask = 0x3F;
radius *= SQRT2;
if(axyp > bias*axyn + radius) mask &= dxyp < 0 ? ~((1<<0)|(1<<2)) : ~((2<<0)|(2<<2));
if(axyn > bias*axyp + radius) mask &= dxyn < 0 ? ~((1<<0)|(2<<2)) : ~((2<<0)|(1<<2));
if(ayzp > bias*ayzn + radius) mask &= dyzp < 0 ? ~((1<<2)|(1<<4)) : ~((2<<2)|(2<<4));
if(ayzn > bias*ayzp + radius) mask &= dyzn < 0 ? ~((1<<2)|(2<<4)) : ~((2<<2)|(1<<4));
if(azxp > bias*azxn + radius) mask &= dzxp < 0 ? ~((1<<4)|(1<<0)) : ~((2<<4)|(2<<0));
if(azxn > bias*azxp + radius) mask &= dzxn < 0 ? ~((1<<4)|(2<<0)) : ~((2<<4)|(1<<0));
return mask;
}
int calctrisidemask(const vec &p1, const vec &p2, const vec &p3, float bias)
{
// p1, p2, p3 are in the cubemap's local coordinate system
// bias = border/(size - border)
int mask = 0x3F;
float dp1 = p1.x + p1.y, dn1 = p1.x - p1.y, ap1 = fabs(dp1), an1 = fabs(dn1),
dp2 = p2.x + p2.y, dn2 = p2.x - p2.y, ap2 = fabs(dp2), an2 = fabs(dn2),
dp3 = p3.x + p3.y, dn3 = p3.x - p3.y, ap3 = fabs(dp3), an3 = fabs(dn3);
if(ap1 > bias*an1 && ap2 > bias*an2 && ap3 > bias*an3)
mask &= (3<<4)
| (dp1 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2))
| (dp2 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2))
| (dp3 >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
if(an1 > bias*ap1 && an2 > bias*ap2 && an3 > bias*ap3)
mask &= (3<<4)
| (dn1 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2))
| (dn2 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2))
| (dn3 >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
dp1 = p1.y + p1.z, dn1 = p1.y - p1.z, ap1 = fabs(dp1), an1 = fabs(dn1),
dp2 = p2.y + p2.z, dn2 = p2.y - p2.z, ap2 = fabs(dp2), an2 = fabs(dn2),
dp3 = p3.y + p3.z, dn3 = p3.y - p3.z, ap3 = fabs(dp3), an3 = fabs(dn3);
if(ap1 > bias*an1 && ap2 > bias*an2 && ap3 > bias*an3)
mask &= (3<<0)
| (dp1 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4))
| (dp2 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4))
| (dp3 >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
if(an1 > bias*ap1 && an2 > bias*ap2 && an3 > bias*ap3)
mask &= (3<<0)
| (dn1 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4))
| (dn2 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4))
| (dn3 >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
dp1 = p1.z + p1.x, dn1 = p1.z - p1.x, ap1 = fabs(dp1), an1 = fabs(dn1),
dp2 = p2.z + p2.x, dn2 = p2.z - p2.x, ap2 = fabs(dp2), an2 = fabs(dn2),
dp3 = p3.z + p3.x, dn3 = p3.z - p3.x, ap3 = fabs(dp3), an3 = fabs(dn3);
if(ap1 > bias*an1 && ap2 > bias*an2 && ap3 > bias*an3)
mask &= (3<<2)
| (dp1 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0))
| (dp2 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0))
| (dp3 >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
if(an1 > bias*ap1 && an2 > bias*ap2 && an3 > bias*ap3)
mask &= (3<<2)
| (dn1 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0))
| (dn2 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0))
| (dn3 >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
return mask;
}
int cullfrustumsides(const vec &lightpos, float lightradius, float size, float border)
{
int sides = 0x3F, masks[6] = { 3<<4, 3<<4, 3<<0, 3<<0, 3<<2, 3<<2 };
float scale = (size - 2*border)/size, bias = border / (float)(size - border);
// check if cone enclosing side would cross frustum plane
scale = 2 / (scale*scale + 2);
loopi(5) if(vfcP[i].dist(lightpos) <= -0.03125f)
{
vec n = vec(vfcP[i]).div(lightradius);
float len = scale*n.squaredlen();
if(n.x*n.x > len) sides &= n.x < 0 ? ~(1<<0) : ~(2 << 0);
if(n.y*n.y > len) sides &= n.y < 0 ? ~(1<<2) : ~(2 << 2);
if(n.z*n.z > len) sides &= n.z < 0 ? ~(1<<4) : ~(2 << 4);
}
if (vfcP[4].dist(lightpos) >= vfcDfog + 0.03125f)
{
vec n = vec(vfcP[4]).div(lightradius);
float len = scale*n.squaredlen();
if(n.x*n.x > len) sides &= n.x >= 0 ? ~(1<<0) : ~(2 << 0);
if(n.y*n.y > len) sides &= n.y >= 0 ? ~(1<<2) : ~(2 << 2);
if(n.z*n.z > len) sides &= n.z >= 0 ? ~(1<<4) : ~(2 << 4);
}
// this next test usually clips off more sides than the former, but occasionally clips fewer/different ones, so do both and combine results
// check if frustum corners/origin cross plane sides
// infinite version, assumes frustum corners merely give direction and extend to infinite distance
vec p = vec(camera1->o).sub(lightpos).div(lightradius);
float dp = p.x + p.y, dn = p.x - p.y, ap = fabs(dp), an = fabs(dn);
masks[0] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2));
masks[1] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2));
dp = p.y + p.z, dn = p.y - p.z, ap = fabs(dp), an = fabs(dn);
masks[2] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4));
masks[3] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4));
dp = p.z + p.x, dn = p.z - p.x, ap = fabs(dp), an = fabs(dn);
masks[4] |= ap <= bias*an ? 0x3F : (dp >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0));
masks[5] |= an <= bias*ap ? 0x3F : (dn >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0));
loopi(4)
{
vec n;
switch(i)
{
case 0: n.cross(vfcP[0], vfcP[2]); break;
case 1: n.cross(vfcP[3], vfcP[0]); break;
case 2: n.cross(vfcP[2], vfcP[1]); break;
case 3: n.cross(vfcP[1], vfcP[3]); break;
}
dp = n.x + n.y, dn = n.x - n.y, ap = fabs(dp), an = fabs(dn);
if(ap > 0) masks[0] |= dp >= 0 ? (1<<0)|(1<<2) : (2<<0)|(2<<2);
if(an > 0) masks[1] |= dn >= 0 ? (1<<0)|(2<<2) : (2<<0)|(1<<2);
dp = n.y + n.z, dn = n.y - n.z, ap = fabs(dp), an = fabs(dn);
if(ap > 0) masks[2] |= dp >= 0 ? (1<<2)|(1<<4) : (2<<2)|(2<<4);
if(an > 0) masks[3] |= dn >= 0 ? (1<<2)|(2<<4) : (2<<2)|(1<<4);
dp = n.z + n.x, dn = n.z - n.x, ap = fabs(dp), an = fabs(dn);
if(ap > 0) masks[4] |= dp >= 0 ? (1<<4)|(1<<0) : (2<<4)|(2<<0);
if(an > 0) masks[5] |= dn >= 0 ? (1<<4)|(2<<0) : (2<<4)|(1<<0);
}
return sides & masks[0] & masks[1] & masks[2] & masks[3] & masks[4] & masks[5];
}
VAR(0, smbbcull, 0, 1, 1);
VAR(0, smdistcull, 0, 1, 1);
VAR(0, smnodraw, 0, 0, 1);
vec shadoworigin(0, 0, 0), shadowdir(0, 0, 0);
float shadowradius = 0, shadowbias = 0;
int shadowside = 0, shadowspot = 0, shadowtransparent = 0;
vtxarray *shadowva = NULL;
static inline void addshadowva(vtxarray *va, float dist)
{
va->rdistance = int(dist);
int hash = clamp(int(dist*VASORTSIZE/shadowradius), 0, VASORTSIZE-1);
vtxarray **prev = &vasort[hash], *cur = vasort[hash];
while(cur && va->rdistance > cur->rdistance)
{
prev = &cur->rnext;
cur = cur->rnext;