3 #include "bufferable.h"
10 Bufferable::~Bufferable()
15 void Bufferable::use_buffer(Buffer *buf, Bufferable *prev)
17 if(prev && buf!=prev->buffer)
18 throw invalid_argument("Bufferable::use_buffer");
26 prev_in_buffer = prev;
29 next_in_buffer = prev_in_buffer->next_in_buffer;
30 prev_in_buffer->next_in_buffer = this;
34 location_dirty = true;
39 void Bufferable::change_buffer(Buffer *buf)
41 for(Bufferable *b=this; b; b=b->next_in_buffer)
44 b->location_dirty = true;
47 for(Bufferable *b=prev_in_buffer; b; b=b->prev_in_buffer)
50 b->location_dirty = true;
55 unsigned Bufferable::get_required_buffer_size() const
57 const Bufferable *last = this;
58 for(; last->next_in_buffer; last=last->next_in_buffer) ;
59 return last->offset+last->get_data_size();
62 Bufferable::AsyncUpdater *Bufferable::refresh_async() const
64 return dirty ? new AsyncUpdater(*this) : 0;
67 void Bufferable::unlink_from_buffer()
70 prev_in_buffer->next_in_buffer = next_in_buffer;
73 next_in_buffer->prev_in_buffer = prev_in_buffer;
74 next_in_buffer->update_offset();
82 void Bufferable::update_offset()
84 unsigned new_offset = 0;
86 new_offset = prev_in_buffer->offset+prev_in_buffer->get_data_size();
88 unsigned align = get_alignment();
89 new_offset += align-1;
90 new_offset -= new_offset%align;
91 if(new_offset!=offset)
94 location_dirty = true;
99 next_in_buffer->update_offset();
100 else if(buffer && offset+get_data_size()>buffer->get_size())
102 location_dirty = true;
107 void Bufferable::upload_data(char *target) const
109 unsigned data_size = get_data_size();
112 buffer->require_size(offset+data_size);
113 location_changed(buffer, offset, data_size);
114 location_dirty = false;
119 const char *source = reinterpret_cast<const char *>(get_data_pointer());
120 copy(source, source+data_size, target);
123 buffer->sub_data(offset, data_size, get_data_pointer());
128 Bufferable::AsyncUpdater::AsyncUpdater(const Bufferable &b):
131 bufferable.buffer->require_size(bufferable.get_required_buffer_size());
132 mapped_address = reinterpret_cast<char *>(bufferable.buffer->map());
135 Bufferable::AsyncUpdater::~AsyncUpdater()
137 bufferable.buffer->unmap();
140 void Bufferable::AsyncUpdater::upload_data()
142 bufferable.upload_data(mapped_address+bufferable.offset);
143 // Update all bufferables in the same buffer at once
144 for(const Bufferable *b=bufferable.prev_in_buffer; b; b=b->prev_in_buffer)
146 b->upload_data(mapped_address+b->offset);
147 for(const Bufferable *b=bufferable.next_in_buffer; b; b=b->next_in_buffer)
149 b->upload_data(mapped_address+b->offset);