-
-vector<const BufferRange *> BufferRange::bound_uniform;
-
-BufferRange::BufferRange(Buffer &b, unsigned o, unsigned s):
- buffer(b),
- offset(o),
- size(s)
-{
- if(o>buffer.get_size() || o+s>buffer.get_size())
- throw out_of_range("BufferRange::BufferRange");
-}
-
-BufferRange::~BufferRange()
-{
- for(unsigned i=0; i<bound_uniform.size(); ++i)
- if(bound_uniform[i]==this)
- unbind_from(UNIFORM_BUFFER, i);
-}
-
-void BufferRange::data(const void *d)
-{
- buffer.sub_data(offset, size, d);
-}
-
-void BufferRange::bind_to(BufferType t, unsigned i)
-{
- Buffer::require_buffer_type(t);
- if(set_current(t, i, this))
- {
- // The buffer gets bound as a side effect
- Buffer::set_current(t, &buffer);
- glBindBufferRange(t, i, buffer.id, offset, size);
- }
-}
-
-void BufferRange::unbind_from(BufferType t, unsigned i)
-{
- if(set_current(t, i, 0))
- {
- Buffer::set_current(t, 0);
- glBindBufferBase(t, i, 0);
- }
-}
-
-const BufferRange *&BufferRange::binding(BufferType type, unsigned index)
-{
- if(type==UNIFORM_BUFFER)
- {
- if(index>=Limits::get_global().max_uniform_bindings)
- throw out_of_range("BufferRange::binding");
- if(bound_uniform.size()<=index)
- bound_uniform.resize(index+1);
- return bound_uniform[index];
- }
- else
- throw invalid_argument("BufferRange::binding");
-}
-
-bool BufferRange::set_current(BufferType type, unsigned index, const BufferRange *buf)
-{
- const BufferRange *&ptr = binding(type, index);
- if(ptr==buf)
- return false;
-
- ptr = buf;
- return true;
-}
-
-unsigned BufferRange::get_n_uniform_buffer_bindings()
-{
- return Limits::get_global().max_uniform_bindings;
-}
-
-unsigned BufferRange::get_uniform_buffer_alignment()
-{
- return Limits::get_global().uniform_buffer_alignment;
-}
-