sandey/blender
1
0
Fork 0
forked from bartvdbraak/blender
Code Pull Requests Activity

Changes in code to allow double sided energy, but it's not possible

Browse Source 
to activate it. Added comment in code how to enable it for those who
like to play (search for translu)

What doesnt work - according to me not satisfying - is fact that radiosity
hemicubes alias badly on short distances, so interior light doesn't spread
well.
This commit is contained in:
Ton Roosendaal 2004-06-26 18:03:57 +00:00
parent 2a6c8a2797
commit 263d0823d3
4 changed files with 35 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
source/blender/radiosity/extern/include/radio_types.h vendored
View File

@ -70,6 +70,7 @@ typedef struct RadView {
#define RAD_SHOOT 2
#define RAD_SUBDIV 4
#define RAD_BACKFACE 8
#define RAD_TWOSIDED 16
typedef struct RNode { /* length: 76 */

11
source/blender/radiosity/intern/source/radfactors.c
View File

@ -524,6 +524,7 @@ void rad_init_energy()
void progressiverad()
{
RPatch *shoot;
float unshot[3];
int it= 0;
rad_printstatus();
@ -539,8 +540,16 @@ void progressiverad()
drawpatch_ext(shoot, 0x88FF00);
if(shoot->first->f & RAD_TWOSIDED) {
VECCOPY(unshot, shoot->unshot);
VecMulf(shoot->norm, -1.0);
if(makeformfactors(shoot))
applyformfactors(shoot);
VecMulf(shoot->norm, -1.0);
VECCOPY(shoot->unshot, unshot);
}
if( makeformfactors(shoot) ) {
applyformfactors(shoot);
it++;

3
source/blender/radiosity/intern/source/radpreprocess.c
View File

@ -459,6 +459,9 @@ void rad_collect_meshes()
rp->emit[1]*= rp->ref[1];
rp->emit[2]*= rp->ref[2];
// uncommented, this is not satisfying, but i leave it in code for now (ton)
// if(ma->translucency!=0.0) rn->f |= RAD_TWOSIDED;
nodevert= (VeNoCo **)&(rn->v1);
for(b=0; b<rp->type; b++) {
rp->cent[0]+= (*nodevert)->v[0];

29
source/blender/radiosity/intern/source/radrender.c
View File

@ -127,9 +127,8 @@ static void backface_test_rr(VlakRen *shoot)
for(a=0; a<R.totvlak; a++) {
if((a & 255)==0) vlr= R.blovl[a>>8]; else vlr++;
if(vlr->radface) {
rf= vlr->radface;
if(vlr!=shoot) {
rf= vlr->radface;
VecSubf(tvec, shoot->radface->cent, rf->cent);
if( tvec[0]*rf->norm[0]+ tvec[1]*rf->norm[1]+ tvec[2]*rf->norm[2] < 0.0) {
@ -244,7 +243,8 @@ static void applyformfactors_rr(VlakRen *shoot)
r= (*fp)*unr*ref[0];
g= (*fp)*ung*ref[1];
b= (*fp)*unb*ref[2];
// if(rf->flag & RAD_BACKFACE) {
rf->totrad[0]+= r;
rf->totrad[1]+= g;
@ -267,21 +267,32 @@ static void progressiverad_rr()
{
extern void RE_local_timecursor(int); // RE_callbacks.c
VlakRen *shoot;
float unshot[3];
int it= 0;
shoot= findshoot_rr();
while( shoot ) {
/* backfaces receive no energy, but are zbuffered */
/* backfaces receive no energy, but are zbuffered... */
backface_test_rr(shoot);
/* ...unless it's two sided */
if(shoot->radface->flag & RAD_TWOSIDED) {
VECCOPY(unshot, shoot->radface->unshot);
VecMulf(shoot->radface->norm, -1.0);
makeformfactors_rr(shoot);
applyformfactors_rr(shoot);
VecMulf(shoot->radface->norm, -1.0);
VECCOPY(shoot->radface->unshot, unshot);
}
/* hemi-zbuffers */
makeformfactors_rr(shoot);
/* based at RG.formfactors array, distribute shoot energy over other faces */
applyformfactors_rr(shoot);
it++;
RE_local_timecursor(it);
// printf("\r Radiosity step %d", it); fflush(stdout);
clear_backface_test_rr();
@ -359,7 +370,9 @@ printf(" Rad elems: %d emittors %d\n", RG.totelem, RG.totpatch);
RG.min[b]= MIN2(RG.min[b], rf->cent[b]);
RG.max[b]= MAX2(RG.max[b], rf->cent[b]);
}
// uncommented; this isnt satisfying, but i leave it in the code for now (ton)
// if(vlr->mat->translucency!=0.0) rf->flag |= RAD_TWOSIDED;
vlr->radface= rf++;
}