#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"
offset(0),
next_in_buffer(0),
prev_in_buffer(0),
+ location_dirty(false),
dirty(false)
{ }
}
}
+ location_dirty = true;
+ dirty = true;
update_offset();
}
+void Bufferable::change_buffer(Buffer *buf)
+{
+ for(Bufferable *b=this; b; b=b->next_in_buffer)
+ {
+ b->buffer = buf;
+ b->location_dirty = true;
+ b->dirty = true;
+ }
+ for(Bufferable *b=prev_in_buffer; b; b=b->prev_in_buffer)
+ {
+ b->buffer = buf;
+ b->location_dirty = true;
+ b->dirty = true;
+ }
+}
+
+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(prev_in_buffer)
prev_in_buffer = 0;
next_in_buffer = 0;
buffer = 0;
+ offset = 0;
}
void Bufferable::update_offset()
if(new_offset!=offset)
{
offset = new_offset;
+ location_dirty = true;
dirty = true;
- offset_changed();
}
if(next_in_buffer)
next_in_buffer->update_offset();
-
- /* Do not resize the buffer here, as more bufferables may be added before
- the buffer is actually used. */
+ else if(buffer && offset+get_data_size()>buffer->get_size())
+ {
+ location_dirty = true;
+ dirty = true;
+ }
}
-void Bufferable::update_buffer() const
+void Bufferable::upload_data(char *target) const
{
- const Buffer *old_buffer = Buffer::current(buffer->get_type());
- buffer->bind();
- if(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->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(old_buffer)
- old_buffer->bind_to(buffer->get_type());
+ if(target)
+ {
+ const char *source = reinterpret_cast<const char *>(get_data_pointer());
+ copy(source, source+data_size, target);
+ }
else
- buffer->unbind();
+ 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());
+}
+
+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