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OctaCore/src/engine/stain.cc
q66 8833348ce2 .h -> .hh
2020-04-16 20:28:40 +02:00

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#include "engine.hh"
struct stainvert
{
vec pos;
bvec4 color;
vec2 tc;
};
struct staininfo
{
int millis;
bvec color;
uchar owner;
ushort startvert, endvert;
};
enum
{
SF_RND4 = 1<<0,
SF_ROTATE = 1<<1,
SF_INVMOD = 1<<2,
SF_OVERBRIGHT = 1<<3,
SF_GLOW = 1<<4,
SF_SATURATE = 1<<5
};
VARFP(maxstaintris, 1, 2048, 16384, initstains());
VARMP(stainfade, 1, 15, 60, 1000);
VAR(dbgstain, 0, 0, 1);
struct stainbuffer
{
stainvert *verts;
int maxverts, startvert, endvert, lastvert, availverts;
GLuint vbo;
bool dirty;
stainbuffer() : verts(NULL), maxverts(0), startvert(0), endvert(0), lastvert(0), availverts(0), vbo(0), dirty(false)
{}
~stainbuffer()
{
DELETEA(verts);
}
void init(int tris)
{
if(verts)
{
DELETEA(verts);
maxverts = startvert = endvert = lastvert = availverts = 0;
}
if(tris)
{
maxverts = tris*3 + 3;
availverts = maxverts - 3;
verts = new stainvert[maxverts];
}
}
void cleanup()
{
if(vbo) { glDeleteBuffers_(1, &vbo); vbo = 0; }
}
void clear()
{
startvert = endvert = lastvert = 0;
availverts = max(maxverts - 3, 0);
dirty = true;
}
int freestain(const staininfo &d)
{
int removed = d.endvert < d.startvert ? maxverts - (d.startvert - d.endvert) : d.endvert - d.startvert;
startvert = d.endvert;
if(startvert==endvert) startvert = endvert = lastvert = 0;
availverts += removed;
return removed;
}
void clearstains(const staininfo &d)
{
startvert = d.endvert;
availverts = endvert < startvert ? startvert - endvert - 3 : maxverts - 3 - (endvert - startvert);
dirty = true;
}
bool faded(const staininfo &d) const { return verts[d.startvert].color.a < 255; }
void fadestain(const staininfo &d, const bvec4 &color)
{
stainvert *vert = &verts[d.startvert],
*end = &verts[d.endvert < d.startvert ? maxverts : d.endvert];
while(vert < end)
{
vert->color = color;
vert++;
}
if(d.endvert < d.startvert)
{
vert = verts;
end = &verts[d.endvert];
while(vert < end)
{
vert->color = color;
vert++;
}
}
dirty = true;
}
void render()
{
if(startvert == endvert) return;
if(!vbo) { glGenBuffers_(1, &vbo); dirty = true; }
gle::bindvbo(vbo);
int count = endvert < startvert ? maxverts - startvert : endvert - startvert;
if(dirty)
{
glBufferData_(GL_ARRAY_BUFFER, maxverts*sizeof(stainvert), NULL, GL_STREAM_DRAW);
glBufferSubData_(GL_ARRAY_BUFFER, 0, count*sizeof(stainvert), &verts[startvert]);
if(endvert < startvert)
{
glBufferSubData_(GL_ARRAY_BUFFER, count*sizeof(stainvert), endvert*sizeof(stainvert), verts);
count += endvert;
}
dirty = false;
}
else if(endvert < startvert) count += endvert;
const stainvert *ptr = 0;
gle::vertexpointer(sizeof(stainvert), ptr->pos.v);
gle::texcoord0pointer(sizeof(stainvert), ptr->tc.v);
gle::colorpointer(sizeof(stainvert), ptr->color.v);
glDrawArrays(GL_TRIANGLES, 0, count);
xtravertsva += count;
}
stainvert *addtri()
{
stainvert *tri = &verts[endvert];
availverts -= 3;
endvert += 3;
if(endvert >= maxverts) endvert = 0;
return tri;
}
void addstain(staininfo &d)
{
dirty = true;
}
bool hasverts() const { return startvert != endvert; }
int nextverts() const
{
return endvert < lastvert ? endvert + maxverts - lastvert : endvert - lastvert;
}
int totalverts() const
{
return endvert < startvert ? maxverts - (startvert - endvert) : endvert - startvert;
}
int totaltris() const
{
return (maxverts - 3 - availverts)/3;
}
};
struct stainrenderer
{
const char *texname;
int flags, fadeintime, fadeouttime, timetolive;
Texture *tex;
staininfo *stains;
int maxstains, startstain, endstain;
stainbuffer verts[NUMSTAINBUFS];
stainrenderer(const char *texname, int flags = 0, int fadeintime = 0, int fadeouttime = 1000, int timetolive = -1)
: texname(texname), flags(flags),
fadeintime(fadeintime), fadeouttime(fadeouttime), timetolive(timetolive),
tex(NULL),
stains(NULL), maxstains(0), startstain(0), endstain(0),
stainu(0), stainv(0)
{
}
~stainrenderer()
{
DELETEA(stains);
}
bool usegbuffer() const { return !(flags&(SF_INVMOD|SF_GLOW)); }
void init(int tris)
{
if(stains)
{
DELETEA(stains);
maxstains = startstain = endstain = 0;
}
stains = new staininfo[tris];
maxstains = tris;
loopi(NUMSTAINBUFS) verts[i].init(i == STAINBUF_TRANSPARENT ? tris/2 : tris);
}
void preload()
{
tex = textureload(texname, 3);
}
int totalstains()
{
return endstain < startstain ? maxstains - (startstain - endstain) : endstain - startstain;
}
bool hasstains(int sbuf)
{
return verts[sbuf].hasverts();
}
void clearstains()
{
startstain = endstain = 0;
loopi(NUMSTAINBUFS) verts[i].clear();
}
int freestain()
{
if(startstain==endstain) return 0;
staininfo &d = stains[startstain];
startstain++;
if(startstain >= maxstains) startstain = 0;
return verts[d.owner].freestain(d);
}
bool faded(const staininfo &d) const { return verts[d.owner].faded(d); }
void fadestain(const staininfo &d, uchar alpha)
{
bvec color = d.color;
if(flags&(SF_OVERBRIGHT|SF_GLOW|SF_INVMOD)) color.scale(alpha, 255);
verts[d.owner].fadestain(d, bvec4(color, alpha));
}
void clearfadedstains()
{
int threshold = lastmillis - (timetolive>=0 ? timetolive : stainfade) - fadeouttime;
staininfo *d = &stains[startstain],
*end = &stains[endstain < startstain ? maxstains : endstain],
*cleared[NUMSTAINBUFS] = { NULL };
for(; d < end && d->millis <= threshold; d++)
cleared[d->owner] = d;
if(d >= end && endstain < startstain)
for(d = stains, end = &stains[endstain]; d < end && d->millis <= threshold; d++)
cleared[d->owner] = d;
startstain = d - stains;
if(startstain == endstain) loopi(NUMSTAINBUFS) verts[i].clear();
else loopi(NUMSTAINBUFS) if(cleared[i]) verts[i].clearstains(*cleared[i]);
}
void fadeinstains()
{
if(!fadeintime) return;
staininfo *d = &stains[endstain],
*end = &stains[endstain < startstain ? 0 : startstain];
while(d > end)
{
d--;
int fade = lastmillis - d->millis;
if(fade < fadeintime) fadestain(*d, (fade<<8)/fadeintime);
else if(faded(*d)) fadestain(*d, 255);
else return;
}
if(endstain < startstain)
{
d = &stains[maxstains];
end = &stains[startstain];
while(d > end)
{
d--;
int fade = lastmillis - d->millis;
if(fade < fadeintime) fadestain(*d, (fade<<8)/fadeintime);
else if(faded(*d)) fadestain(*d, 255);
else return;
}
}
}
void fadeoutstains()
{
staininfo *d = &stains[startstain],
*end = &stains[endstain < startstain ? maxstains : endstain];
int offset = (timetolive>=0 ? timetolive : stainfade) + fadeouttime - lastmillis;
while(d < end)
{
int fade = d->millis + offset;
if(fade >= fadeouttime) return;
fadestain(*d, (fade<<8)/fadeouttime);
d++;
}
if(endstain < startstain)
{
d = stains;
end = &stains[endstain];
while(d < end)
{
int fade = d->millis + offset;
if(fade >= fadeouttime) return;
fadestain(*d, (fade<<8)/fadeouttime);
d++;
}
}
}
static void setuprenderstate(int sbuf, bool gbuf, int layer)
{
if(gbuf) maskgbuffer(sbuf == STAINBUF_TRANSPARENT ? "cg" : "c");
else zerofogcolor();
if(layer && ghasstencil)
{
glStencilFunc(GL_EQUAL, layer, 0x07);
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
}
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE);
enablepolygonoffset(GL_POLYGON_OFFSET_FILL);
glDepthMask(GL_FALSE);
glEnable(GL_BLEND);
gle::enablevertex();
gle::enabletexcoord0();
gle::enablecolor();
}
static void cleanuprenderstate(int sbuf, bool gbuf, int layer)
{
gle::clearvbo();
gle::disablevertex();
gle::disabletexcoord0();
gle::disablecolor();
glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
disablepolygonoffset(GL_POLYGON_OFFSET_FILL);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
if(gbuf) maskgbuffer(sbuf == STAINBUF_TRANSPARENT ? "cndg" : "cnd");
else resetfogcolor();
}
void cleanup()
{
loopi(NUMSTAINBUFS) verts[i].cleanup();
}
void render(int sbuf)
{
float colorscale = 1, alphascale = 1;
if(flags&SF_OVERBRIGHT)
{
glBlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
SETVARIANT(overbrightstain, sbuf == STAINBUF_TRANSPARENT ? 0 : -1, 0);
}
else if(flags&SF_GLOW)
{
glBlendFunc(GL_ONE, GL_ONE);
colorscale = ldrscale;
if(flags&SF_SATURATE) colorscale *= 2;
alphascale = 0;
SETSHADER(foggedstain);
}
else if(flags&SF_INVMOD)
{
glBlendFunc(GL_ZERO, GL_ONE_MINUS_SRC_COLOR);
alphascale = 0;
SETSHADER(foggedstain);
}
else
{
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
colorscale = ldrscale;
if(flags&SF_SATURATE) colorscale *= 2;
SETVARIANT(stain, sbuf == STAINBUF_TRANSPARENT ? 0 : -1, 0);
}
LOCALPARAMF(colorscale, colorscale, colorscale, colorscale, alphascale);
glBindTexture(GL_TEXTURE_2D, tex->id);
verts[sbuf].render();
}
staininfo &newstain()
{
staininfo &d = stains[endstain];
int next = endstain + 1;
if(next>=maxstains) next = 0;
if(next==startstain) freestain();
endstain = next;
return d;
}
ivec bbmin, bbmax;
vec staincenter, stainnormal, staintangent, stainbitangent;
float stainradius, stainu, stainv;
bvec4 staincolor;
void addstain(const vec &center, const vec &dir, float radius, const bvec &color, int info)
{
if(dir.iszero()) return;
bbmin = ivec(center).sub(radius);
bbmax = ivec(center).add(radius).add(1);
staincolor = bvec4(color, 255);
staincenter = center;
stainradius = radius;
stainnormal = dir;
#if 0
staintangent.orthogonal(dir);
#else
staintangent = vec(dir.z, -dir.x, dir.y);
staintangent.project(dir);
#endif
if(flags&SF_ROTATE) staintangent.rotate(sincos360[rnd(360)], dir);
staintangent.normalize();
stainbitangent.cross(staintangent, dir);
if(flags&SF_RND4)
{
stainu = 0.5f*(info&1);
stainv = 0.5f*((info>>1)&1);
}
loopi(NUMSTAINBUFS) verts[i].lastvert = verts[i].endvert;
gentris(worldroot, ivec(0, 0, 0), worldsize>>1);
loopi(NUMSTAINBUFS)
{
stainbuffer &buf = verts[i];
if(buf.endvert == buf.lastvert) continue;
if(dbgstain)
{
int nverts = buf.nextverts();
static const char * const sbufname[NUMSTAINBUFS] = { "opaque", "transparent", "mapmodel" };
conoutf(CON_DEBUG, "tris = %d, verts = %d, total tris = %d, %s", nverts/3, nverts, buf.totaltris(), sbufname[i]);
}
staininfo &d = newstain();
d.owner = i;
d.color = color;
d.millis = lastmillis;
d.startvert = buf.lastvert;
d.endvert = buf.endvert;
buf.addstain(d);
}
}
void gentris(cube &cu, int orient, const ivec &o, int size, materialsurface *mat = NULL, int vismask = 0)
{
vec pos[MAXFACEVERTS+4];
int numverts = 0, numplanes = 1;
vec planes[2];
if(mat)
{
planes[0] = vec(0, 0, 0);
switch(orient)
{
#define GENFACEORIENT(orient, v0, v1, v2, v3) \
case orient: \
planes[0][dimension(orient)] = dimcoord(orient) ? 1 : -1; \
v0 v1 v2 v3 \
break;
#define GENFACEVERT(orient, vert, x,y,z, xv,yv,zv) \
pos[numverts++] = vec(x xv, y yv, z zv);
GENFACEVERTS(o.x, o.x, o.y, o.y, o.z, o.z, , + mat->csize, , + mat->rsize, + 0.1f, - 0.1f);
#undef GENFACEORIENT
#undef GENFACEVERT
}
}
else if(cu.texture[orient] == DEFAULT_SKY) return;
else if(cu.ext && (numverts = cu.ext->surfaces[orient].numverts&MAXFACEVERTS))
{
vertinfo *verts = cu.ext->verts() + cu.ext->surfaces[orient].verts;
ivec vo = ivec(o).mask(~0xFFF).shl(3);
loopj(numverts) pos[j] = vec(verts[j].getxyz().add(vo)).mul(1/8.0f);
planes[0].cross(pos[0], pos[1], pos[2]).normalize();
if(numverts >= 4 && !(cu.merged&(1<<orient)) && !flataxisface(cu, orient) && faceconvexity(verts, numverts, size))
{
planes[1].cross(pos[0], pos[2], pos[3]).normalize();
numplanes++;
}
}
else if(cu.merged&(1<<orient)) return;
else if(!vismask || (vismask&0x40 && visibleface(cu, orient, o, size, MAT_AIR, (cu.material&MAT_ALPHA)^MAT_ALPHA, MAT_ALPHA)))
{
ivec v[4];
genfaceverts(cu, orient, v);
int vis = 3, convex = faceconvexity(v, vis), order = convex < 0 ? 1 : 0;
vec vo(o);
pos[numverts++] = vec(v[order]).mul(size/8.0f).add(vo);
if(vis&1) pos[numverts++] = vec(v[order+1]).mul(size/8.0f).add(vo);
pos[numverts++] = vec(v[order+2]).mul(size/8.0f).add(vo);
if(vis&2) pos[numverts++] = vec(v[(order+3)&3]).mul(size/8.0f).add(vo);
planes[0].cross(pos[0], pos[1], pos[2]).normalize();
if(convex) { planes[1].cross(pos[0], pos[2], pos[3]).normalize(); numplanes++; }
}
else return;
stainbuffer &buf = verts[mat || cu.material&MAT_ALPHA ? STAINBUF_TRANSPARENT : STAINBUF_OPAQUE];
loopl(numplanes)
{
const vec &n = planes[l];
float facing = n.dot(stainnormal);
if(facing <= 0) continue;
vec p = vec(pos[0]).sub(staincenter);
#if 0
// intersect ray along stain normal with plane
float dist = n.dot(p) / facing;
if(fabs(dist) > stainradius) continue;
vec pcenter = vec(stainnormal).mul(dist).add(staincenter);
#else
// travel back along plane normal from the stain center
float dist = n.dot(p);
if(fabs(dist) > stainradius) continue;
vec pcenter = vec(n).mul(dist).add(staincenter);
#endif
vec ft, fb;
ft.orthogonal(n);
ft.normalize();
fb.cross(ft, n);
vec pt = vec(ft).mul(ft.dot(staintangent)).add(vec(fb).mul(fb.dot(staintangent))).normalize(),
pb = vec(ft).mul(ft.dot(stainbitangent)).add(vec(fb).mul(fb.dot(stainbitangent))).project(pt).normalize();
vec v1[MAXFACEVERTS+4], v2[MAXFACEVERTS+4];
float ptc = pt.dot(pcenter), pbc = pb.dot(pcenter);
int numv;
if(numplanes >= 2)
{
if(l) { pos[1] = pos[2]; pos[2] = pos[3]; }
numv = polyclip(pos, 3, pt, ptc - stainradius, ptc + stainradius, v1);
if(numv<3) continue;
}
else
{
numv = polyclip(pos, numverts, pt, ptc - stainradius, ptc + stainradius, v1);
if(numv<3) continue;
}
numv = polyclip(v1, numv, pb, pbc - stainradius, pbc + stainradius, v2);
if(numv<3) continue;
float tsz = flags&SF_RND4 ? 0.5f : 1.0f, scale = tsz*0.5f/stainradius,
tu = stainu + tsz*0.5f - ptc*scale, tv = stainv + tsz*0.5f - pbc*scale;
pt.mul(scale); pb.mul(scale);
stainvert dv1 = { v2[0], staincolor, vec2(pt.dot(v2[0]) + tu, pb.dot(v2[0]) + tv) },
dv2 = { v2[1], staincolor, vec2(pt.dot(v2[1]) + tu, pb.dot(v2[1]) + tv) };
int totalverts = 3*(numv-2);
if(totalverts > buf.maxverts-3) return;
while(buf.availverts < totalverts)
{
if(!freestain()) return;
}
loopk(numv-2)
{
stainvert *tri = buf.addtri();
tri[0] = dv1;
tri[1] = dv2;
dv2.pos = v2[k+2];
dv2.tc = vec2(pt.dot(v2[k+2]) + tu, pb.dot(v2[k+2]) + tv);
tri[2] = dv2;
}
}
}
void findmaterials(vtxarray *va)
{
materialsurface *matbuf = va->matbuf;
int matsurfs = va->matsurfs;
loopi(matsurfs)
{
materialsurface &m = matbuf[i];
if(!isclipped(m.material&MATF_VOLUME)) { i += m.skip; continue; }
int dim = dimension(m.orient), dc = dimcoord(m.orient);
if(dc ? stainnormal[dim] <= 0 : stainnormal[dim] >= 0) { i += m.skip; continue; }
int c = C[dim], r = R[dim];
for(;;)
{
materialsurface &m = matbuf[i];
if(m.o[dim] >= bbmin[dim] && m.o[dim] <= bbmax[dim] &&
m.o[c] + m.csize >= bbmin[c] && m.o[c] <= bbmax[c] &&
m.o[r] + m.rsize >= bbmin[r] && m.o[r] <= bbmax[r])
{
static cube dummy;
gentris(dummy, m.orient, m.o, max(m.csize, m.rsize), &m);
}
if(i+1 >= matsurfs) break;
materialsurface &n = matbuf[i+1];
if(n.material != m.material || n.orient != m.orient) break;
i++;
}
}
}
void findescaped(cube *c, const ivec &o, int size, int escaped)
{
loopi(8)
{
cube &cu = c[i];
if(escaped&(1<<i))
{
ivec co(i, o, size);
if(cu.children) findescaped(cu.children, co, size>>1, cu.escaped);
else
{
int vismask = cu.merged;
if(vismask) loopj(6) if(vismask&(1<<j)) gentris(cu, j, co, size);
}
}
}
}
void genmmtri(const vec v[3])
{
vec n;
n.cross(v[0], v[1], v[2]).normalize();
float facing = n.dot(stainnormal);
if(facing <= 0) return;
vec p = vec(v[0]).sub(staincenter);
#if 0
float dist = n.dot(p) / facing;
if(fabs(dist) > stainradius) return;
vec pcenter = vec(stainnormal).mul(dist).add(staincenter);
#else
float dist = n.dot(p);
if(fabs(dist) > stainradius) return;
vec pcenter = vec(n).mul(dist).add(staincenter);
#endif
vec ft, fb;
ft.orthogonal(n);
ft.normalize();
fb.cross(ft, n);
vec pt = vec(ft).mul(ft.dot(staintangent)).add(vec(fb).mul(fb.dot(staintangent))).normalize(),
pb = vec(ft).mul(ft.dot(stainbitangent)).add(vec(fb).mul(fb.dot(stainbitangent))).project(pt).normalize();
vec v1[3+4], v2[3+4];
float ptc = pt.dot(pcenter), pbc = pb.dot(pcenter);
int numv = polyclip(v, 3, pt, ptc - stainradius, ptc + stainradius, v1);
if(numv<3) return;
numv = polyclip(v1, numv, pb, pbc - stainradius, pbc + stainradius, v2);
if(numv<3) return;
float tsz = flags&SF_RND4 ? 0.5f : 1.0f, scale = tsz*0.5f/stainradius,
tu = stainu + tsz*0.5f - ptc*scale, tv = stainv + tsz*0.5f - pbc*scale;
pt.mul(scale); pb.mul(scale);
stainvert dv1 = { v2[0], staincolor, vec2(pt.dot(v2[0]) + tu, pb.dot(v2[0]) + tv) },
dv2 = { v2[1], staincolor, vec2(pt.dot(v2[1]) + tu, pb.dot(v2[1]) + tv) };
int totalverts = 3*(numv-2);
stainbuffer &buf = verts[STAINBUF_MAPMODEL];
if(totalverts > buf.maxverts-3) return;
while(buf.availverts < totalverts)
{
if(!freestain()) return;
}
loopk(numv-2)
{
stainvert *tri = buf.addtri();
tri[0] = dv1;
tri[1] = dv2;
dv2.pos = v2[k+2];
dv2.tc = vec2(pt.dot(v2[k+2]) + tu, pb.dot(v2[k+2]) + tv);
tri[2] = dv2;
}
}
void genmmtris(octaentities &oe)
{
const vector<extentity *> &ents = entities::getents();
loopv(oe.mapmodels)
{
extentity &e = *ents[oe.mapmodels[i]];
model *m = loadmapmodel(e.attr1);
if(!m) continue;
vec center, radius;
float rejectradius = m->collisionbox(center, radius), scale = e.attr5 > 0 ? e.attr5/100.0f : 1;
center.mul(scale);
if(staincenter.reject(vec(e.o).add(center), stainradius + rejectradius*scale)) continue;
if(m->animated() || (!m->bih && !m->setBIH())) continue;
int yaw = e.attr2, pitch = e.attr3, roll = e.attr4;
m->bih->genstaintris(this, staincenter, stainradius, e.o, yaw, pitch, roll, scale);
}
}
void gentris(cube *c, const ivec &o, int size, int escaped = 0)
{
int overlap = octaboxoverlap(o, size, bbmin, bbmax);
loopi(8)
{
cube &cu = c[i];
if(overlap&(1<<i))
{
ivec co(i, o, size);
if(cu.ext)
{
if(cu.ext->va && cu.ext->va->matsurfs) findmaterials(cu.ext->va);
if(cu.ext->ents && cu.ext->ents->mapmodels.length()) genmmtris(*cu.ext->ents);
}
if(cu.children) gentris(cu.children, co, size>>1, cu.escaped);
else
{
int vismask = cu.visible;
if(vismask&0xC0)
{
if(vismask&0x80) loopj(6) gentris(cu, j, co, size, NULL, vismask);
else loopj(6) if(vismask&(1<<j)) gentris(cu, j, co, size);
}
}
}
else if(escaped&(1<<i))
{
ivec co(i, o, size);
if(cu.children) findescaped(cu.children, co, size>>1, cu.escaped);
else
{
int vismask = cu.merged;
if(vismask) loopj(6) if(vismask&(1<<j)) gentris(cu, j, co, size);
}
}
}
}
};
stainrenderer stains[] =
{
stainrenderer("<grey>media/particle/blood.png", SF_RND4|SF_ROTATE|SF_INVMOD),
stainrenderer("<grey>media/particle/pulse_scorch.png", SF_ROTATE, 500),
stainrenderer("<grey>media/particle/rail_hole.png", SF_ROTATE|SF_OVERBRIGHT),
stainrenderer("<grey>media/particle/pulse_glow.png", SF_ROTATE|SF_GLOW|SF_SATURATE, 250, 1500, 250),
stainrenderer("<grey>media/particle/rail_glow.png", SF_ROTATE|SF_GLOW|SF_SATURATE, 100, 1100, 100)
};
void initstains()
{
if(initing) return;
loopi(sizeof(stains)/sizeof(stains[0])) stains[i].init(maxstaintris);
loopi(sizeof(stains)/sizeof(stains[0]))
{
loadprogress = float(i+1)/(sizeof(stains)/sizeof(stains[0]));
stains[i].preload();
}
loadprogress = 0;
}
void clearstains()
{
loopi(sizeof(stains)/sizeof(stains[0])) stains[i].clearstains();
}
VARNP(stains, showstains, 0, 1, 1);
bool renderstains(int sbuf, bool gbuf, int layer)
{
bool rendered = false;
loopi(sizeof(stains)/sizeof(stains[0]))
{
stainrenderer &d = stains[i];
if(d.usegbuffer() != gbuf) continue;
if(sbuf == STAINBUF_OPAQUE)
{
d.clearfadedstains();
d.fadeinstains();
d.fadeoutstains();
}
if(!showstains || !d.hasstains(sbuf)) continue;
if(!rendered)
{
rendered = true;
stainrenderer::setuprenderstate(sbuf, gbuf, layer);
}
d.render(sbuf);
}
if(!rendered) return false;
stainrenderer::cleanuprenderstate(sbuf, gbuf, layer);
return true;
}
void cleanupstains()
{
loopi(sizeof(stains)/sizeof(stains[0])) stains[i].cleanup();
}
VARP(maxstaindistance, 1, 512, 10000);
void addstain(int type, const vec &center, const vec &surface, float radius, const bvec &color, int info)
{
if(!showstains || type<0 || (size_t)type>=sizeof(stains)/sizeof(stains[0]) || center.dist(camera1->o) - radius > maxstaindistance) return;
stainrenderer &d = stains[type];
d.addstain(center, surface, radius, color, info);
}
void genstainmmtri(stainrenderer *s, const vec v[3])
{
s->genmmtri(v);
}
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