static const unsigned num_fbo_attachments = 4;
struct FBO {
+ GLuint fbo_num;
// GL_INVALID_INDEX means associated to a texture that has since been deleted.
// 0 means the output isn't bound.
GLuint texture_num[num_fbo_attachments];
// filled if the FBO is given out to a client or on the freelist, but
// not if it is deleted from the freelist.
std::map<std::pair<void *, GLuint>, FBO> fbo_formats;
+ typedef std::map<std::pair<void *, GLuint>, FBO>::iterator FBOFormatIterator;
// For each context, a list of all FBOs that are released but not freed
// (most recently freed first). Once this reaches <fbo_freelist_max_length>,
// the last element will be deleted.
- std::map<void *, std::list<GLuint> > fbo_freelist;
+ //
+ // We store iterators directly into <fbo_format> for efficiency.
+ std::map<void *, std::list<FBOFormatIterator> > fbo_freelist;
// See the caveats at the constructor.
static size_t estimate_texture_size(const Texture2D &texture_format);