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// eye space depth texture for soft particles, done at low res then blurred to prevent ugly jaggies
VARP(depthfxfpscale, 1, 1<<12, 1<<16);
VARP(depthfxscale, 1, 1<<6, 1<<8);
VARP(depthfxblend, 1, 16, 64);
VARP(depthfxpartblend, 1, 8, 64);
VAR(depthfxmargin, 0, 16, 64);
VAR(depthfxbias, 0, 1, 64);
extern void cleanupdepthfx();
VARFP(fpdepthfx, 0, 0, 1, cleanupdepthfx());
VARP(depthfxemuprecision, 0, 1, 1);
VARFP(depthfxsize, 6, 7, 12, cleanupdepthfx());
VARP(depthfx, 0, 1, 1);
VARP(depthfxparts, 0, 1, 1);
VARP(blurdepthfx, 0, 1, 7);
VARP(blurdepthfxsigma, 1, 50, 200);
VAR(depthfxscissor, 0, 2, 2);
#define MAXDFXRANGES 4
void *depthfxowners[MAXDFXRANGES];
float depthfxranges[MAXDFXRANGES];
int numdepthfxranges = 0;
vec depthfxmin(1e16f, 1e16f, 1e16f), depthfxmax(1e16f, 1e16f, 1e16f);
static struct depthfxtexture : rendertarget
{
const GLenum *colorformats() const
{
static const GLenum colorfmts[] = { GL_RG16F, GL_RGB16F, GL_RGBA, GL_RGBA8, GL_RGB, GL_RGB8, GL_FALSE };
return &colorfmts[fpdepthfx && hasTF ? (hasTRG ? 0 : 1) : 2];
}
float eyedepth(const vec &p) const
{
return max(-cammatrix.transform<vec>(p).z, 0.0f);
}
void addscissorvert(const vec &v, float &sx1, float &sy1, float &sx2, float &sy2)
{
vec p = camprojmatrix.perspectivetransform(v);
sx1 = min(sx1, p.x);
sy1 = min(sy1, p.y);
sx2 = max(sx2, p.x);
sy2 = max(sy2, p.y);
}
bool addscissorbox(const vec ¢er, float size)
{
float sx1, sy1, sx2, sy2;
calcspherescissor(center, size, sx1, sy1, sx2, sy2);
return addblurtiles(sx1, sy1, sx2, sy2);
}
bool addscissorbox(const vec &bbmin, const vec &bbmax)
{
float sx1 = 1, sy1 = 1, sx2 = -1, sy2 = -1;
loopi(8)
{
vec v(i&1 ? bbmax.x : bbmin.x, i&2 ? bbmax.y : bbmin.y, i&4 ? bbmax.z : bbmin.z);
addscissorvert(v, sx1, sy1, sx2, sy2);
}
return addblurtiles(sx1, sy1, sx2, sy2);
}
bool screenrect() const { return true; }
bool filter() const { return blurdepthfx!=0; }
bool highprecision() const { return colorfmt==GL_RG16F || colorfmt==GL_RGB16F; }
bool emulatehighprecision() const { return depthfxemuprecision && !blurdepthfx; }
bool shouldrender()
{
extern void finddepthfxranges();
finddepthfxranges();
return (numdepthfxranges && scissorx1 < scissorx2 && scissory1 < scissory2);
}
bool dorender()
{
glClearColor(1, 1, 1, 1);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
depthfxing = true;
refracting = -1;
extern void renderdepthobstacles(const vec &bbmin, const vec &bbmax, float scale, float *ranges, int numranges);
float scale = depthfxscale;
float *ranges = depthfxranges;
int numranges = numdepthfxranges;
if(highprecision())
{
scale = depthfxfpscale;
ranges = NULL;
numranges = 0;
}
else if(emulatehighprecision())
{
scale = depthfxfpscale;
ranges = NULL;
numranges = -3;
}
renderdepthobstacles(depthfxmin, depthfxmax, scale, ranges, numranges);
refracting = 0;
depthfxing = false;
return numdepthfxranges > 0;
}
} depthfxtex;
void cleanupdepthfx()
{
depthfxtex.cleanup(true);
}
bool depthfxing = false;
bool binddepthfxtex()
{
if(!reflecting && !refracting && depthfx && depthfxtex.rendertex && numdepthfxranges>0)
{
glActiveTexture_(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, depthfxtex.rendertex);
glActiveTexture_(GL_TEXTURE0);
return true;
}
return false;
}
void binddepthfxparams(float blend, float minblend = 0, bool allow = true, void *owner = NULL)
{
if(!reflecting && !refracting && depthfx && depthfxtex.rendertex && numdepthfxranges>0)
{
float scale = 0, offset = -1, texscale = 0;
if(!depthfxtex.highprecision())
{
float select[4] = { 0, 0, 0, 0 };
if(!depthfxtex.emulatehighprecision())
{
loopi(numdepthfxranges) if(depthfxowners[i]==owner)
{
select[i] = float(depthfxscale)/blend;
scale = 1.0f/blend;
offset = -float(depthfxranges[i] - depthfxbias)/blend;
break;
}
}
else if(allow)
{
select[0] = float(depthfxfpscale)/blend;
select[1] = select[0]/256;
select[2] = select[1]/256;
scale = 1.0f/blend;
offset = 0;
}
LOCALPARAMF(depthfxselect, select[0], select[1], select[2], select[3]);
}
else if(allow)
{
scale = 1.0f/blend;
offset = 0;
texscale = float(depthfxfpscale)/blend;
}
LOCALPARAMF(depthfxparams, scale, offset, texscale, minblend);
}
}
void drawdepthfxtex()
{
if(!depthfx) return;
depthfxtex.render(1<<depthfxsize, 1<<depthfxsize, blurdepthfx, blurdepthfxsigma/100.0f);
}
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