// if this function changes, please also check SupportsReShading, PreShade and PostShade
// end - ke/mjm - 03.16.00 - merge reshading code
// [attilas|29.5.2000] if this function changes, please also check EvalColorStdChannel
void CompositeMat::Shade(ShadeContext& sc)
{
Mtl *sm1 = NULL;
int id =0;
// float gamount;
if (gbufID){
sc.SetGBufferID(gbufID);
id = gbufID;
}
Interval iv;
int first = 1;
ShadeOutput out1;
int nEles = sc.NRenderElements();
for (int i = 0; i < MAX_NUM_MTLS; i++){
BOOL enabled;
float amount;
if (i==0) enabled = 1;
else pblock2->GetValue(compmat_map_on,sc.CurTime(),enabled,iv,i-1);
if (enabled){
pblock2->GetValue(compmat_mtls,sc.CurTime(),sm1,iv,i);
if (sm1 != NULL){
if (i==0) amount = 100.f;
else pblock2->GetValue(compmat_amount,sc.CurTime(),amount,iv,i-1);
amount = amount*0.01f;
int type;
if (i==0) type = 2;
else pblock2->GetValue(compmat_type,sc.CurTime(),type,iv,i-1);
if (first ==1){ // first material
first = 0;
sm1->Shade(sc); // sc.out already reset for first
out1 = sc.out;
if (type == 0){
out1.t.r += 1.0f-amount;
out1.t.g += 1.0f-amount;
out1.t.b += 1.0f-amount;
out1.c *= amount;
out1.t.ClampMinMax();
// render elements
for( int i = 0; i < nEles; ++i )
out1.elementVals[i] *= amount;
}
out1.ior *= amount;
// gamount = 1.0f-(out1.t.r + out1.t.g + out1.t.b)/3.0f;
} else { // not first material
// pblock2->GetValue(compmat_mtls,sc.CurTime(),sm2,iv,i);
// sc.out.ior = s*a.ior + f*ior;
// if (f<=0.5f) gbufId = a.gbufId;
sc.ResetOutput();
sm1->Shade(sc);
ShadeOutput out2 = sc.out;
if (type == 0){ // additive
out2.t.r += 1.0f-amount;
out2.t.g += 1.0f-amount;
out2.t.b += 1.0f-amount;
out2.c *= amount;
out2.t.ClampMinMax();
out2.ior *= amount;
float f1 = 1.0f-(out1.t.r + out1.t.g + out1.t.b)/3.0f;
float f2 = 1.0f-(out2.t.r + out2.t.g + out2.t.b)/3.0f;
out1.c = out1.c *(1.0f-f2) + out2.c * (f1);
out1.t = out1.t- (1.0f-out2.t);
out1.ior = out1.ior + out2.ior;
// if (f2 > gamount) {
// gamount = f2;
// out1.gbufId = out1.gbufId;//?? ke 6.13.00
// }
out1.t.ClampMinMax();
// render elements
for( int i = 0; i < nEles; ++i )
out1.elementVals[i] = out1.elementVals[i] * (1.0f-f2) + out2.elementVals[i] * f1;
} else if (type == 1) { // subtractive
//NB: as of 6.13.00 this is SAME as additive case
out2.t.r += 1.0f-amount;
out2.t.g += 1.0f-amount;
out2.t.b += 1.0f-amount;
out2.c *= amount;
out2.t.ClampMinMax();
out2.ior *= amount;
float f1 = 1.0f-(out1.t.r + out1.t.g + out1.t.b)/3.0f;
float f2 = 1.0f-(out2.t.r + out2.t.g + out2.t.b)/3.0f;
out1.c = out1.c *(1.0f-f2) - out2.c * f1;
out1.t = out1.t- (1.0f-out2.t);
out1.ior = out1.ior + out2.ior;
// if (f2 > gamount){
// gamount = f2;
// out1.gbufId = out1.gbufId; //?? ke 6.13.00
// }
out1.t.ClampMinMax();
// render elements
for( int i = 0; i < nEles; ++i )
out1.elementVals[i] = out1.elementVals[i] * (1.0f-f2) + out2.elementVals[i] * f1;
} else { //mix
// mixIn handles render elements
out1.MixIn(out2,1.0f-amount);
}
}// end, not first mtl
} // end, sm1 not null
}// end, enabled
} // end, for each material
sc.out = out1;
}
void M3Mat::PostShade(ShadeContext& sc, IReshadeFragment* pFrag, int& nextTexIndex, IllumParams* ip)
{
int i;
IReshading* pReshading;
TimeValue t = sc.CurTime();
Interval valid = FOREVER;
pblockMat->GetValue(100,t,i,FOREVER);
Mtl *sm1 = mTex[100];
float total(0.0f);
ShadeOutput sDatabase[100];
float u[100];
ShadeOutput sFinal;
// handle no base mat
if(!sm1)
{
sc.ResetOutput();
sc.out.c = black;
sc.out.t = black;
return;
}
if(i==0 || (i==1 && inRender) )
{
for( i=0; i<100; i++)
{
pblockMat->GetValue(i,t,u[i],valid);
u[i] /= 100.0f;
if( mTex[i]!=NULL && u[i]!=0 && mapOn[i] )
{
Mtl *comb = mTex[i];
pReshading = (IReshading*)(comb->GetInterface(IID_IReshading));
if( pReshading )
pReshading->PostShade(sc, pFrag, nextTexIndex, ip );
sDatabase[i] = sc.out;
sc.ResetOutput();
total += u[i];
}
}
sc.ResetOutput();
pReshading = (IReshading*)(sm1->GetInterface(IID_IReshading));
if( pReshading )
pReshading->PostShade(sc, pFrag, nextTexIndex, ip );
sFinal.c = black;
sFinal.t = black;
sFinal.ior = 0.0f;
for( i=0;i<100;i++)
{
if(mTex[i]!=NULL && u[i]!=0 && mapOn[i])
{
sc.out.flags |= sDatabase[i].flags;
if(total>1.0f){
sFinal.c += u[i]/total * sDatabase[i].c;
sFinal.t += u[i]/total * sDatabase[i].t;
sFinal.ior += u[i]/total * sDatabase[i].ior;
}
else{
sFinal.c += u[i] * sDatabase[i].c;
sFinal.t += u[i] * sDatabase[i].t;
sFinal.ior += u[i] * sDatabase[i].ior;
}
}
}
if(total) {
sc.out.MixIn(sFinal, 1.0f-total);
}
}
else {
pReshading = (IReshading*)(sm1->GetInterface(IID_IReshading));
if( pReshading )
pReshading->PostShade(sc, pFrag, nextTexIndex, ip );
}
}
void CompositeMat::PostShade(ShadeContext& sc, IReshadeFragment* pFrag, int& nextTexIndex, IllumParams* )
{
int i(0), type(2);
Mtl* submtl = NULL;
BOOL enabled(TRUE);
ShadeOutput out1, out2;
float amount(100.0f); // , gamount(0.0f);
char texLengths[12];
int* pI = (int*)&texLengths[0];
pI[0] = pFrag->GetIntChannel(nextTexIndex++);
pI[1] = pFrag->GetIntChannel(nextTexIndex++);
pI[2] = pFrag->GetIntChannel(nextTexIndex++);
// postshade any submaterials
for ( i=0; i<MAX_NUM_MTLS; i++)
{
if( i>0 )
pblock2->GetValue(compmat_map_on, sc.CurTime(), enabled, FOREVER, i-1);
else
enabled = TRUE;
pblock2->GetValue(compmat_mtls, sc.CurTime(), submtl, FOREVER, i);
if ( enabled && submtl ){
if( i > 0 ){
pblock2->GetValue(compmat_amount, sc.CurTime(), amount, FOREVER, i-1);
pblock2->GetValue(compmat_type, sc.CurTime(), type, FOREVER, i-1);
}
amount = amount * 0.01f;
sc.ResetOutput();
IReshading* pReshading = (IReshading*)(submtl->GetInterface(IID_IReshading));
if( pReshading )
pReshading->PostShade(sc, pFrag, nextTexIndex);
// first check for base material
if( i > 0 ) {
// not base material, composite the next material
out2 = sc.out;
if (type == 0) // additive
{
out2.t.r += 1.0f-amount;
out2.t.g += 1.0f-amount;
out2.t.b += 1.0f-amount;
out2.c *= amount;
out2.t.ClampMinMax();
out2.ior *= amount;
float f1 = 1.0f - (out1.t.r + out1.t.g + out1.t.b) / 3.0f;
float f2 = 1.0f - (out2.t.r + out2.t.g + out2.t.b) / 3.0f;
out1.c = out1.c * (1.0f-f2) + out2.c * f1;
out1.t = out1.t - (1.0f-out2.t);
out1.ior = out1.ior + out2.ior;
out1.t.ClampMinMax();
}
else if (type == 1) // subtractive
{
out2.t.r += 1.0f-amount;
out2.t.g += 1.0f-amount;
out2.t.b += 1.0f-amount;
out2.c *= amount;
out2.t.ClampMinMax();
out2.ior *= amount;
float f1 = 1.0f - (out1.t.r + out1.t.g + out1.t.b) / 3.0f;
float f2 = 1.0f - (out2.t.r + out2.t.g + out2.t.b) / 3.0f;
out1.c = out1.c * (1.0f-f2) - out2.c * f1;
out1.t = out1.t - (1.0f-out2.t);
out1.ior = out1.ior + out2.ior;
out1.t.ClampMinMax();
}
else //mix
{
out1.MixIn(out2, 1.0f-amount);
}
}// end, not base mtl
else {
// base material.
out1 = sc.out;
out1.ior *= amount;
}
}// end, if has submtl & enabled
else {
nextTexIndex += texLengths[i];
}
}// end, for each mtl
sc.out = out1;
}
void M3Mat::Shade(ShadeContext& sc) {
int i;
TimeValue t = sc.CurTime();
Interval valid = FOREVER;
pblockMat->GetValue(100,t,i,FOREVER);
Mtl *sm1 = mTex[100];
float total(0.0f);
ShadeOutput sFinal( sc.out.nElements ); // get nElements correctly
ShadeOutput sDatabase[100];
// for( i = 0; i < 100; ++i )
// sDatabase[i] = sFinal;
float u[100];
// handle no base mat
if(!sm1)
{
sc.ResetOutput();
sc.out.c = black;
sc.out.t = black;
return;
}
if(i==0||(i==1&&inRender))
{
for( i=0;i<100;i++)
{
pblockMat->GetValue(i,t,u[i],valid);
u[i] /= 100.0f;
if(mTex[i]!=NULL&&u[i]!=0&&mapOn[i])
{
Mtl *comb = mTex[i];
comb->Shade(sc);
sDatabase[i] = sc.out;
sc.ResetOutput();
total += u[i];
}
}
sc.ResetOutput();
sm1->Shade(sc);
sFinal.c = black;
sFinal.t = black;
sFinal.ior = 0.0f;
for( i=0;i<100;i++)
{
if(mTex[i]!=NULL&&u[i]!=0&&mapOn[i])
{
sc.out.flags |= sDatabase[i].flags;
if(total>1.0f){
sFinal.c += u[i]/total * sDatabase[i].c;
sFinal.t += u[i]/total * sDatabase[i].t;
sFinal.ior += u[i]/total * sDatabase[i].ior;
}
else{
sFinal.c += u[i] * sDatabase[i].c;
sFinal.t += u[i] * sDatabase[i].t;
sFinal.ior += u[i] * sDatabase[i].ior;
}
}
}
if(total) {
sc.out.MixIn(sFinal, 1.0f-total);
}
}
else {
sm1->Shade(sc);
}
}
