bool ProcessedShaderMaterial::_createPasses( MaterialFeatureData &stageFeatures, U32 stageNum, const FeatureSet &features )
{
// Creates passes for the given stage
ShaderRenderPassData passData;
U32 texIndex = 0;
for( U32 i=0; i < FEATUREMGR->getFeatureCount(); i++ )
{
const FeatureInfo &info = FEATUREMGR->getAt( i );
if ( !stageFeatures.features.hasFeature( *info.type ) )
continue;
U32 numTexReg = info.feature->getResources( stageFeatures ).numTexReg;
// adds pass if blend op changes for feature
_setPassBlendOp( info.feature, passData, texIndex, stageFeatures, stageNum, features );
// Add pass if num tex reg is going to be too high
if( passData.mNumTexReg + numTexReg > GFX->getNumSamplers() )
{
if( !_addPass( passData, texIndex, stageFeatures, stageNum, features ) )
return false;
_setPassBlendOp( info.feature, passData, texIndex, stageFeatures, stageNum, features );
}
passData.mNumTexReg += numTexReg;
passData.mFeatureData.features.addFeature( *info.type );
info.feature->setTexData( mStages[stageNum], stageFeatures, passData, texIndex );
// Add pass if tex units are maxed out
if( texIndex > GFX->getNumSamplers() )
{
if( !_addPass( passData, texIndex, stageFeatures, stageNum, features ) )
return false;
_setPassBlendOp( info.feature, passData, texIndex, stageFeatures, stageNum, features );
}
}
const FeatureSet &passFeatures = passData.mFeatureData.codify();
if ( passFeatures.isNotEmpty() )
{
mFeatures.merge( passFeatures );
if( !_addPass( passData, texIndex, stageFeatures, stageNum, features ) )
{
mFeatures.clear();
return false;
}
}
return true;
}
void ProcessedShaderMaterial::_setPassBlendOp( ShaderFeature *sf,
ShaderRenderPassData &passData,
U32 &texIndex,
MaterialFeatureData &stageFeatures,
U32 stageNum,
const FeatureSet &features )
{
if( sf->getBlendOp() == Material::None )
{
return;
}
// set up the current blend operation for multi-pass materials
if( mPasses.size() > 0)
{
// If passData.numTexReg is 0, this is a brand new pass, so set the
// blend operation to the first feature.
if( passData.mNumTexReg == 0 )
{
passData.mBlendOp = sf->getBlendOp();
}
else
{
// numTegReg is more than zero, if this feature
// doesn't have the same blend operation, then
// we need to create yet another pass
if( sf->getBlendOp() != passData.mBlendOp && mPasses[mPasses.size()-1]->mStageNum == stageNum)
{
_addPass( passData, texIndex, stageFeatures, stageNum, features );
passData.mBlendOp = sf->getBlendOp();
}
}
}
}
void ProcessedFFMaterial::_createPasses( U32 stageNum, const FeatureSet &features )
{
FixedFuncFeatureData featData;
_determineFeatures(stageNum, featData, features);
// Just create a simple pass!
_addPass(0, featData);
mFeatures.clear();
if ( featData.features[FixedFuncFeatureData::DiffuseMap] )
mFeatures.addFeature( MFT_DiffuseMap );
if ( featData.features[FixedFuncFeatureData::LightMap] )
mFeatures.addFeature( MFT_LightMap );
if ( featData.features[FixedFuncFeatureData::ToneMap] )
mFeatures.addFeature( MFT_ToneMap );
}
