3 #include "bufferable.h"
10 Bufferable::Bufferable():
15 location_dirty(false),
19 Bufferable::~Bufferable()
24 void Bufferable::use_buffer(Buffer *buf, Bufferable *prev)
26 if(prev && buf!=prev->buffer)
27 throw invalid_argument("Bufferable::use_buffer");
35 prev_in_buffer = prev;
38 next_in_buffer = prev_in_buffer->next_in_buffer;
39 prev_in_buffer->next_in_buffer = this;
43 location_dirty = true;
48 void Bufferable::change_buffer(Buffer *buf)
50 for(Bufferable *b=this; b; b=b->next_in_buffer)
53 b->location_dirty = true;
56 for(Bufferable *b=prev_in_buffer; b; b=b->prev_in_buffer)
59 b->location_dirty = true;
64 unsigned Bufferable::get_required_buffer_size() const
66 const Bufferable *last = this;
67 for(; last->next_in_buffer; last=last->next_in_buffer) ;
68 return last->offset+last->get_data_size();
71 Bufferable::AsyncUpdater *Bufferable::refresh_async() const
73 return dirty ? new AsyncUpdater(*this) : 0;
76 void Bufferable::unlink_from_buffer()
79 prev_in_buffer->next_in_buffer = next_in_buffer;
82 next_in_buffer->prev_in_buffer = prev_in_buffer;
83 next_in_buffer->update_offset();
91 void Bufferable::update_offset()
93 unsigned new_offset = 0;
95 new_offset = prev_in_buffer->offset+prev_in_buffer->get_data_size();
97 unsigned align = get_alignment();
98 new_offset += align-1;
99 new_offset -= new_offset%align;
100 if(new_offset!=offset)
103 location_dirty = true;
108 next_in_buffer->update_offset();
109 else if(buffer && offset+get_data_size()>buffer->get_size())
111 location_dirty = true;
116 void Bufferable::upload_data(char *target) const
118 unsigned data_size = get_data_size();
121 buffer->require_size(offset+data_size);
122 location_changed(buffer, offset, data_size);
123 location_dirty = false;
128 const char *source = reinterpret_cast<const char *>(get_data_pointer());
129 copy(source, source+data_size, target);
132 buffer->sub_data(offset, data_size, get_data_pointer());
137 Bufferable::AsyncUpdater::AsyncUpdater(const Bufferable &b):
140 bufferable.buffer->require_size(bufferable.get_required_buffer_size());
141 mapped_address = reinterpret_cast<char *>(bufferable.buffer->map());
144 Bufferable::AsyncUpdater::~AsyncUpdater()
146 bufferable.buffer->unmap();
149 void Bufferable::AsyncUpdater::upload_data()
151 bufferable.upload_data(mapped_address+bufferable.offset);
152 // Update all bufferables in the same buffer at once
153 for(const Bufferable *b=bufferable.prev_in_buffer; b; b=b->prev_in_buffer)
155 b->upload_data(mapped_address+b->offset);
156 for(const Bufferable *b=bufferable.next_in_buffer; b; b=b->next_in_buffer)
158 b->upload_data(mapped_address+b->offset);