3 #include "bufferable.h"
11 Bufferable::~Bufferable()
16 void Bufferable::use_buffer(Buffer *buf, Bufferable *prev)
18 if(prev && buf!=prev->buffer)
19 throw invalid_argument("Bufferable::use_buffer");
27 prev_in_buffer = prev;
30 next_in_buffer = prev_in_buffer->next_in_buffer;
31 prev_in_buffer->next_in_buffer = this;
35 location_dirty = true;
40 void Bufferable::change_buffer(Buffer *buf)
42 for(Bufferable *b=this; b; b=b->next_in_buffer)
45 b->location_dirty = true;
48 for(Bufferable *b=prev_in_buffer; b; b=b->prev_in_buffer)
51 b->location_dirty = true;
56 unsigned Bufferable::get_required_buffer_size() const
58 const Bufferable *last = this;
59 for(; last->next_in_buffer; last=last->next_in_buffer) ;
60 return last->offset+last->get_data_size();
63 Bufferable::AsyncUpdater *Bufferable::refresh_async() const
65 return dirty ? new AsyncUpdater(*this) : 0;
68 void Bufferable::unlink_from_buffer()
71 prev_in_buffer->next_in_buffer = next_in_buffer;
74 next_in_buffer->prev_in_buffer = prev_in_buffer;
75 next_in_buffer->update_offset();
83 void Bufferable::update_offset()
85 unsigned new_offset = 0;
87 new_offset = prev_in_buffer->offset+prev_in_buffer->get_data_size();
89 unsigned align = get_alignment();
90 new_offset += align-1;
91 new_offset -= new_offset%align;
92 if(new_offset!=offset)
95 location_dirty = true;
100 next_in_buffer->update_offset();
101 else if(buffer && offset+get_data_size()>buffer->get_size())
103 location_dirty = true;
108 void Bufferable::upload_data(char *target) const
111 throw invalid_operation("Bufferable::upload_data");
113 unsigned data_size = get_data_size();
116 buffer->require_size(offset+data_size);
117 location_dirty = false;
122 const char *source = reinterpret_cast<const char *>(get_data_pointer());
123 copy(source, source+data_size, target);
126 buffer->sub_data(offset, data_size, get_data_pointer());
131 Bufferable::AsyncUpdater::AsyncUpdater(const Bufferable &b):
134 bufferable.buffer->require_size(bufferable.get_required_buffer_size());
135 mapped_address = reinterpret_cast<char *>(bufferable.buffer->map());
138 Bufferable::AsyncUpdater::~AsyncUpdater()
140 bufferable.buffer->unmap();
143 void Bufferable::AsyncUpdater::upload_data()
145 bufferable.upload_data(mapped_address+bufferable.offset);
146 // Update all bufferables in the same buffer at once
147 for(const Bufferable *b=bufferable.prev_in_buffer; b; b=b->prev_in_buffer)
149 b->upload_data(mapped_address+b->offset);
150 for(const Bufferable *b=bufferable.next_in_buffer; b; b=b->next_in_buffer)
152 b->upload_data(mapped_address+b->offset);