void ColorDisplayFilter::process(DisplayFilterStageData *pData)
{
SimpleSHLChunk *pShader = pData->getColorFilterShader();
if(pShader == NULL || this->getFilterShader() != pShader)
{
pShader = this->getFilterShader();
OSG_ASSERT(pShader != NULL);
ChunkMaterial *pCMat = pData->getBaseMaterial();
OSG_ASSERT(pCMat != NULL);
pCMat->addChunk(pShader);
commitChanges();
pData->setColorFilterShader(pShader);
}
TextureObjChunk *pColTex = pData->getColorFilterTexture();
if(pData->getInitColTableFrom() != this)
{
if(pColTex == NULL)
{
TextureObjChunkUnrecPtr pTex = TextureObjChunk::createLocal();
pTex->setMinFilter(GL_LINEAR );
pTex->setMagFilter(GL_LINEAR );
pTex->setWrapS (GL_CLAMP_TO_EDGE );
pTex->setWrapT (GL_CLAMP_TO_EDGE );
pTex->setWrapR (GL_CLAMP_TO_EDGE );
pData->setColorFilterTexture(pTex);
ChunkMaterial *pCMat = pData->getBaseMaterial();
OSG_ASSERT(pCMat != NULL);
pCMat->addChunk(pTex, 1);
pColTex = pTex;
}
pData->setInitColTableFrom(this);
pColTex->setImage(this->getTableImage());
commitChanges();
}
OSG_ASSERT(pShader != NULL);
OSG_ASSERT(pColTex != NULL);
pShader->setIgnore(false);
pColTex->setIgnore(false);
}
static Action::ResultE modifyMaterial(Node * const node)
{
MaterialGroup *mg = dynamic_cast<MaterialGroup *>(node->getCore());
if(mg == NULL)
return Action::Continue;
ChunkMaterial *cmat = dynamic_cast<ChunkMaterial *>(mg->getMaterial());
if(cmat == NULL)
return Action::Continue;
TextureObjChunk *texc =
dynamic_cast<TextureObjChunk *>(
cmat->find(TextureObjChunk::getClassType()));
if(texc == NULL)
return Action::Continue;
MaterialChunk *matc =
dynamic_cast<MaterialChunk *>(
cmat->find(MaterialChunk::getClassType()));
TextureEnvChunkUnrecPtr texe =
dynamic_cast<TextureEnvChunk *>(
cmat->find(TextureEnvChunk::getClassType()));
if(texe == NULL)
{
texe = TextureEnvChunk::create();
cmat->addChunk(texe);
}
if(matc == NULL)
{
// no material chunk so we use the replace mode.
texe->setEnvMode(GL_REPLACE);
return Action::Continue;
}
if(matc != NULL)
{
Image *img = texc->getImage();
texe->setEnvMode(GL_MODULATE);
if(img != NULL && img->getBpp() > 2)
{
// for color textures the texture replaces only the diffuse part.
matc->setDiffuse(Color4f(1.0f, 1.0f, 1.0f, 1.0f));
}
// check for textures with alpha
if(!matc->isTransparent() &&
img != NULL &&
img->getBpp() == 4 )
{
BlendChunkUnrecPtr blendc =
dynamic_cast<BlendChunk *>(
cmat->find(BlendChunk::getClassType()));
if(blendc == NULL)
{
blendc = OSG::BlendChunk::create();
blendc->setSrcFactor (GL_SRC_ALPHA);
blendc->setDestFactor(GL_ONE_MINUS_SRC_ALPHA);
cmat->addChunk(blendc);
}
}
}
return Action::Continue;
}
