void TBBitmapFragmentManager::SetDefaultMapSize(int w, int h)
{
assert(TBGetNearestPowerOfTwo(w) == w);
assert(TBGetNearestPowerOfTwo(h) == h);
m_default_map_w = w;
m_default_map_h = h;
}
TBBitmapFragment *TBBitmapFragmentManager::CreateNewFragment(const TBID &id, bool dedicated_map,
int data_w, int data_h, int data_stride,
uint32 *data)
{
assert(!GetFragment(id));
TBBitmapFragment *frag = nullptr;
// Create a fragment in any of the fragment maps. Doing it in the reverse order
// would be faster since it's most likely to succeed, but we want to maximize
// the amount of fragments per map, so do it in the creation order.
if (!dedicated_map)
{
for (int i = 0; i < m_fragment_maps.GetNumItems(); i++)
{
if ((frag = m_fragment_maps[i]->CreateNewFragment(data_w, data_h, data_stride, data, m_add_border)))
break;
}
}
// If we couldn't create the fragment in any map, create a new map where we know it will fit.
bool allow_another_map = (m_num_maps_limit == 0 || m_fragment_maps.GetNumItems() < m_num_maps_limit);
if (!frag && allow_another_map && m_fragment_maps.GrowIfNeeded())
{
int po2w = TBGetNearestPowerOfTwo(MAX(data_w, m_default_map_w));
int po2h = TBGetNearestPowerOfTwo(MAX(data_h, m_default_map_h));
if (dedicated_map)
{
po2w = TBGetNearestPowerOfTwo(data_w);
po2h = TBGetNearestPowerOfTwo(data_h);
}
TBBitmapFragmentMap *fm = new TBBitmapFragmentMap();
if (fm && fm->Init(po2w, po2h))
{
m_fragment_maps.Add(fm);
frag = fm->CreateNewFragment(data_w, data_h, data_stride, data, m_add_border);
}
else
delete fm;
}
// Finally, add the new fragment to the hash.
if (frag && m_fragments.Add(id, frag))
{
frag->m_id = id;
return frag;
}
delete frag;
return nullptr;
}
bool TBBitmapGL::Init(int width, int height, uint32 *data)
{
assert(width == TBGetNearestPowerOfTwo(width));
assert(height == TBGetNearestPowerOfTwo(height));
m_w = width;
m_h = height;
glGenTextures(1, &m_texture);
BindBitmap(this);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
SetData(data);
return true;
}
