void gkOgreCompositorHDRListener::notifyCompositor(Ogre::CompositorInstance* instance)
{
// Get some RTT dimensions for later calculations
Ogre::CompositionTechnique::TextureDefinitionIterator defIter =
instance->getTechnique()->getTextureDefinitionIterator();
while (defIter.hasMoreElements())
{
Ogre::CompositionTechnique::TextureDefinition* def =
defIter.getNext();
if(def->name == "rt_bloom0")
{
mBloomSize = (int)def->width; // should be square
// Calculate gaussian texture offsets & weights
float deviation = 3.0f;
float texelSize = 1.0f / (float)mBloomSize;
// central sample, no offset
mBloomTexOffsetsHorz[0][0] = 0.0f;
mBloomTexOffsetsHorz[0][1] = 0.0f;
mBloomTexOffsetsVert[0][0] = 0.0f;
mBloomTexOffsetsVert[0][1] = 0.0f;
mBloomTexWeights[0][0] = mBloomTexWeights[0][1] =
mBloomTexWeights[0][2] = Ogre::Math::gaussianDistribution(0, 0, deviation);
mBloomTexWeights[0][3] = 1.0f;
// 'pre' samples
for(int i = 1; i < 8; ++i)
{
mBloomTexWeights[i][0] = mBloomTexWeights[i][1] =
mBloomTexWeights[i][2] = 1.25f * Ogre::Math::gaussianDistribution((Ogre::Real)i, 0, deviation);
mBloomTexWeights[i][3] = 1.0f;
mBloomTexOffsetsHorz[i][0] = i * texelSize;
mBloomTexOffsetsHorz[i][1] = 0.0f;
mBloomTexOffsetsVert[i][0] = 0.0f;
mBloomTexOffsetsVert[i][1] = i * texelSize;
}
// 'post' samples
for(int i = 8; i < 15; ++i)
{
mBloomTexWeights[i][0] = mBloomTexWeights[i][1] =
mBloomTexWeights[i][2] = mBloomTexWeights[i - 7][0];
mBloomTexWeights[i][3] = 1.0f;
mBloomTexOffsetsHorz[i][0] = -mBloomTexOffsetsHorz[i - 7][0];
mBloomTexOffsetsHorz[i][1] = 0.0f;
mBloomTexOffsetsVert[i][0] = 0.0f;
mBloomTexOffsetsVert[i][1] = -mBloomTexOffsetsVert[i - 7][1];
}
}
}
}
//---------------------------------------------------------------------
void CompositorDemo_FrameListener::updateDebugRTTWindow(void)
{
// Clear listbox
mDebugRTTListbox->resetList();
// Clear imagesets
mDebugRTTStaticImage->setProperty("Image", "");
for (ImageSetList::iterator isIt = mDebugRTTImageSets.begin();
isIt != mDebugRTTImageSets.end(); ++isIt)
{
CEGUI::ImagesetManager::getSingleton().destroyImageset(*isIt);
}
mDebugRTTImageSets.clear();
Ogre::set<Ogre::String>::type uniqueTextureNames;
// Add an entry for each render texture for all active compositors
Ogre::Viewport* vp = mMain->getRenderWindow()->getViewport(0);
Ogre::CompositorChain* chain = Ogre::CompositorManager::getSingleton().getCompositorChain(vp);
Ogre::CompositorChain::InstanceIterator it = chain->getCompositors();
while (it.hasMoreElements())
{
Ogre::CompositorInstance* inst = it.getNext();
if (inst->getEnabled())
{
Ogre::CompositionTechnique::TextureDefinitionIterator texIt =
inst->getTechnique()->getTextureDefinitionIterator();
while (texIt.hasMoreElements())
{
Ogre::CompositionTechnique::TextureDefinition* texDef = texIt.getNext();
// Get instance name of texture (NB only index 0 if MRTs for now)
const Ogre::String& instName = inst->getTextureInstanceName(texDef->name, 0);
// Create CEGUI texture from name of OGRE texture
CEGUI::Texture* tex = mMain->getGuiRenderer()->createTexture(instName.c_str());
// Create imageset
// Note that if we use shared textures in compositor, the same texture name
// will occur more than once, so we have to cater for this
if (uniqueTextureNames.find(instName) == uniqueTextureNames.end())
{
CEGUI::Imageset* imgSet =
CEGUI::ImagesetManager::getSingleton().createImageset(
instName.c_str(), tex);
mDebugRTTImageSets.push_back(imgSet);
imgSet->defineImage((CEGUI::utf8*)"RttImage",
CEGUI::Point(0.0f, 0.0f),
CEGUI::Size(tex->getWidth(), tex->getHeight()),
CEGUI::Point(0.0f,0.0f));
CEGUI::ListboxTextItem *item = new CEGUI::ListboxTextItem(texDef->name.c_str(), 0, imgSet);
item->setSelectionBrushImage("TaharezLook", "ListboxSelectionBrush");
item->setSelectionColours(CEGUI::colour(0,0,1));
mDebugRTTListbox->addItem(item);
uniqueTextureNames.insert(instName);
}
}
}
}
}