bool ShadowUpdateTask::executeTaskInMainThread()
{
if (!mPageGeometries.empty()) {
auto pageGeometry = mPageGeometries.back();
mPageGeometries.pop_back();
auto& page = pageGeometry->getPage();
if (page.getSurface()) {
auto shadow = page.getSurface()->getShadow();
if (shadow) {
auto& shadowTextureName = shadow->getShadowTextureName();
if (!shadowTextureName.empty()) {
Ogre::TexturePtr texture = Ogre::Root::getSingletonPtr()->getTextureManager()->getByName(shadowTextureName, Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
if (texture) {
Ogre::Image ogreImage;
shadow->loadIntoImage(ogreImage);
texture->loadImage(ogreImage);
//blit the whole image to the hardware buffer
Ogre::PixelBox sourceBox(ogreImage.getPixelBox());
//blit for each mipmap
for (unsigned int i = 0; i <= texture->getNumMipmaps(); ++i) {
Ogre::HardwarePixelBufferSharedPtr hardwareBuffer(texture->getBuffer(0, i));
hardwareBuffer->blitFromMemory(sourceBox);
}
}
}
}
}
}
return mPageGeometries.empty();
}
Ogre::TexturePtr Simple::updateShadowTexture(Ogre::MaterialPtr material, const TerrainPageShadow* terrainPageShadow, std::set<std::string>& managedTextures) const
{
auto shadowTextureName = getShadowTextureName(material);
Ogre::TexturePtr texture = static_cast<Ogre::TexturePtr>(Ogre::Root::getSingletonPtr()->getTextureManager()->getByName(shadowTextureName));
if (texture.isNull()) {
texture = Ogre::Root::getSingletonPtr()->getTextureManager()->createManual(shadowTextureName, "General", Ogre::TEX_TYPE_2D, mPage.getBlendMapSize(), mPage.getBlendMapSize(), 1, Ogre::PF_L8, Ogre::TU_DYNAMIC_WRITE_ONLY);
managedTextures.insert(texture->getName());
}
Ogre::Image ogreImage;
terrainPageShadow->loadIntoImage(ogreImage);
texture->loadImage(ogreImage);
//blit the whole image to the hardware buffer
Ogre::PixelBox sourceBox(ogreImage.getPixelBox());
//blit for each mipmap
for (unsigned int i = 0; i <= texture->getNumMipmaps(); ++i) {
Ogre::HardwarePixelBufferSharedPtr hardwareBuffer(texture->getBuffer(0, i));
hardwareBuffer->blitFromMemory(sourceBox);
}
return texture;
}
void ShadowUpdateTask::executeTaskInBackgroundThread(Tasks::TaskExecutionContext& context)
{
for (auto& pageGeometry : mPageGeometries) {
auto& page = pageGeometry->getPage();
if (page.getSurface()) {
auto shadow = page.getSurface()->getShadow();
if (shadow) {
auto& shadowTextureName = shadow->getShadowTextureName();
if (!shadowTextureName.empty()) {
pageGeometry->repopulate(true);
shadow->setLightDirection(mLightDirection);
shadow->updateShadow(*pageGeometry.get());
}
}
}
}
}
