/*
void TextureAsset::RegenerateAllMipLevels()
{
if (ogreTexture.isNull())
return;
///\todo This function does not quite work, since ogreTexture->getNumMipmaps() will return 0 to denote a "full mipmap chain".
for(int f = 0; f < ogreTexture->getNumFaces(); ++f)
for(int i = 1; i < ogreTexture->getNumMipmaps(); ++i)
{
Ogre::HardwarePixelBufferSharedPtr src = ogreTexture->getBuffer(f, i-1);
Ogre::Box srcSize(0, 0, src->getWidth(), src->getHeight());
Ogre::HardwarePixelBufferSharedPtr dst = ogreTexture->getBuffer(f, i);
Ogre::Box dstSize(0, 0, dst->getWidth(), dst->getHeight());
dst->blit(src, srcSize, dstSize);
}
}
*/
bool TextureAsset::SerializeTo(std::vector<u8> &data, const QString &serializationParameters) const
{
if (ogreTexture.isNull())
{
LogWarning("SerializeTo: Called on an unloaded texture \"" + Name().toStdString() + "\".");
return false;
}
try
{
Ogre::Image new_image;
// From Ogre 1.7 Texture::convertToImage()
size_t numMips = 1;
size_t dataSize = Ogre::Image::calculateSize(numMips,
ogreTexture->getNumFaces(), ogreTexture->getWidth(), ogreTexture->getHeight(), ogreTexture->getDepth(), ogreTexture->getFormat());
void* pixData = OGRE_MALLOC(dataSize, Ogre::MEMCATEGORY_GENERAL);
// if there are multiple faces and mipmaps we must pack them into the data
// faces, then mips
void* currentPixData = pixData;
for (size_t face = 0; face < ogreTexture->getNumFaces(); ++face)
{
for (size_t mip = 0; mip < numMips; ++mip)
{
size_t mipDataSize = Ogre::PixelUtil::getMemorySize(ogreTexture->getWidth(), ogreTexture->getHeight(), ogreTexture->getDepth(), ogreTexture->getFormat());
Ogre::PixelBox pixBox(ogreTexture->getWidth(), ogreTexture->getHeight(), ogreTexture->getDepth(), ogreTexture->getFormat(), currentPixData);
ogreTexture->getBuffer(face, mip)->blitToMemory(pixBox);
currentPixData = (void*)((char*)currentPixData + mipDataSize);
}
}
// load, and tell Image to delete the memory when it's done.
new_image.loadDynamicImage((Ogre::uchar*)pixData, ogreTexture->getWidth(), ogreTexture->getHeight(), ogreTexture->getDepth(), ogreTexture->getFormat(), true,
ogreTexture->getNumFaces(), numMips - 1);
Ogre::DataStreamPtr imageStream = new_image.encode(serializationParameters.toStdString());
if (imageStream.get() && imageStream->size() > 0)
{
data.resize(imageStream->size());
imageStream->read(&data[0], data.size());
}
} catch (std::exception &e)
{
LogError("SerializeTo: Failed to export Ogre texture " + Name().toStdString() + ":");
if (e.what())
OgreRenderer::OgreRenderingModule::LogError(e.what());
return false;
}
return true;
}
//---------------------------------------------------------------------
void Texture::convertToImage(Image& destImage, bool includeMipMaps)
{
size_t numMips = includeMipMaps? getNumMipmaps() + 1 : 1;
size_t dataSize = Image::calculateSize(numMips,
getNumFaces(), getWidth(), getHeight(), getDepth(), getFormat());
void* pixData = OGRE_MALLOC(dataSize, Ogre::MEMCATEGORY_GENERAL);
// if there are multiple faces and mipmaps we must pack them into the data
// faces, then mips
void* currentPixData = pixData;
for (size_t face = 0; face < getNumFaces(); ++face)
{
uint32 width = getWidth();
uint32 height = getHeight();
uint32 depth = getDepth();
for (size_t mip = 0; mip < numMips; ++mip)
{
size_t mipDataSize = PixelUtil::getMemorySize(width, height, depth, getFormat());
Ogre::PixelBox pixBox(width, height, depth, getFormat(), currentPixData);
getBuffer(face, mip)->blitToMemory(pixBox);
currentPixData = (void*)((char*)currentPixData + mipDataSize);
if(width != 1)
width /= 2;
if(height != 1)
height /= 2;
if(depth != 1)
depth /= 2;
}
}
// load, and tell Image to delete the memory when it's done.
destImage.loadDynamicImage((Ogre::uchar*)pixData, getWidth(), getHeight(), getDepth(), getFormat(), true,
getNumFaces(), numMips - 1);
}
