#include <stdexcept>
+#include <msp/core/raii.h>
+#include <msp/gl/extensions/arb_direct_state_access.h>
+#include "bindable.h"
#include "buffer.h"
#include "bufferable.h"
Bufferable::Bufferable():
buffer(0),
- buffer_offset(0),
+ offset(0),
next_in_buffer(0),
prev_in_buffer(0),
+ location_dirty(false),
dirty(false)
{ }
{
prev_in_buffer = prev;
if(prev_in_buffer)
+ {
+ next_in_buffer = prev_in_buffer->next_in_buffer;
prev_in_buffer->next_in_buffer = this;
+ }
+ }
+
+ location_dirty = true;
+ dirty = true;
+ update_offset();
+}
+
+void Bufferable::buffer_resized()
+{
+ for(Bufferable *b=this; b; b=b->next_in_buffer)
+ {
+ b->location_dirty = true;
+ b->dirty = true;
+ }
+ for(Bufferable *b=prev_in_buffer; b; b=b->prev_in_buffer)
+ {
+ b->location_dirty = true;
+ b->dirty = true;
}
+}
- update_buffer_offset();
+unsigned Bufferable::get_required_buffer_size() const
+{
+ const Bufferable *last = this;
+ for(; last->next_in_buffer; last=last->next_in_buffer) ;
+ return last->offset+last->get_data_size();
+}
+
+Bufferable::AsyncUpdater *Bufferable::refresh_async() const
+{
+ return dirty ? new AsyncUpdater(*this) : 0;
}
void Bufferable::unlink_from_buffer()
if(next_in_buffer)
{
next_in_buffer->prev_in_buffer = prev_in_buffer;
- next_in_buffer->update_buffer_offset();
+ next_in_buffer->update_offset();
}
prev_in_buffer = 0;
next_in_buffer = 0;
+ buffer = 0;
}
-void Bufferable::update_buffer_offset()
+void Bufferable::update_offset()
{
- unsigned offset = 0;
+ unsigned new_offset = 0;
if(prev_in_buffer)
- offset = prev_in_buffer->buffer_offset+prev_in_buffer->get_data_size();
+ new_offset = prev_in_buffer->offset+prev_in_buffer->get_data_size();
unsigned align = get_alignment();
- offset += align-1;
- offset -= offset%align;
- if(offset!=buffer_offset)
+ new_offset += align-1;
+ new_offset -= new_offset%align;
+ if(new_offset!=offset)
{
- buffer_offset = offset;
+ offset = new_offset;
+ location_dirty = true;
dirty = true;
- offset_changed();
}
if(next_in_buffer)
- next_in_buffer->update_buffer_offset();
-
- /* Do not resize the buffer here, as the offsets may change multiple times
- before the buffer is actually used */
+ next_in_buffer->update_offset();
+ else if(buffer && offset+get_data_size()>buffer->get_size())
+ {
+ location_dirty = true;
+ dirty = true;
+ }
}
-void Bufferable::update_buffer_data() const
+void Bufferable::upload_data(char *target) const
{
- if(buffer_offset+get_data_size()>=buffer->get_size())
+ unsigned data_size = get_data_size();
+ if(location_dirty)
{
- const Bufferable *last = this;
- for(; last->next_in_buffer; last=last->next_in_buffer) ;
-
- unsigned total_size = last->buffer_offset+last->get_data_size();
-
- if(total_size>buffer->get_size())
- {
- buffer->data(total_size, 0);
- /* Resizing the buffer invalidates its contents. Non-dirty data may
- be in use, so reupload it. */
- for(const Bufferable *b=last; b; b=b->prev_in_buffer)
- if(!b->dirty)
- b->upload_data();
- }
+ buffer->require_size(offset+data_size);
+ location_changed(buffer, offset, data_size);
+ location_dirty = false;
}
- upload_data();
+ if(target)
+ {
+ const char *source = reinterpret_cast<const char *>(get_data_pointer());
+ copy(source, source+data_size, target);
+ }
+ else
+ buffer->sub_data(offset, data_size, get_data_pointer());
dirty = false;
}
+
+Bufferable::AsyncUpdater::AsyncUpdater(const Bufferable &b):
+ bufferable(b)
+{
+ bufferable.buffer->require_size(bufferable.get_required_buffer_size());
+ mapped_address = reinterpret_cast<char *>(bufferable.buffer->map(WRITE_ONLY));
+}
+
+Bufferable::AsyncUpdater::~AsyncUpdater()
+{
+ bufferable.buffer->unmap();
+}
+
+void Bufferable::AsyncUpdater::upload_data()
+{
+ bufferable.upload_data(mapped_address+bufferable.offset);
+ // Update all bufferables in the same buffer at once
+ for(const Bufferable *b=bufferable.prev_in_buffer; b; b=b->prev_in_buffer)
+ if(b->dirty)
+ b->upload_data(mapped_address+b->offset);
+ for(const Bufferable *b=bufferable.next_in_buffer; b; b=b->next_in_buffer)
+ if(b->dirty)
+ b->upload_data(mapped_address+b->offset);
+}
+
} // namespace GL
} // namespace Msp