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 size_t 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 void Bufferable::unlink_from_buffer()
66 prev_in_buffer->next_in_buffer = next_in_buffer;
69 next_in_buffer->prev_in_buffer = prev_in_buffer;
70 next_in_buffer->update_offset();
78 void Bufferable::update_offset()
80 size_t new_offset = 0;
82 new_offset = prev_in_buffer->offset+prev_in_buffer->get_data_size();
84 size_t align = get_alignment();
85 new_offset += align-1;
86 new_offset -= new_offset%align;
87 if(new_offset!=offset)
90 location_dirty = true;
95 next_in_buffer->update_offset();
96 else if(buffer && offset+get_data_size()>buffer->get_size())
98 location_dirty = true;
103 void Bufferable::upload_data(char *target) const
106 throw invalid_operation("Bufferable::upload_data");
108 size_t data_size = get_data_size();
111 buffer->require_size(offset+data_size);
112 location_dirty = false;
117 const char *source = reinterpret_cast<const char *>(get_data_pointer());
118 copy(source, source+data_size, target);
121 buffer->sub_data(offset, data_size, get_data_pointer());
126 Bufferable::AsyncUpdater::AsyncUpdater(const Bufferable &b):
129 bufferable.buffer->require_size(bufferable.get_required_buffer_size());
130 mapped_address = reinterpret_cast<char *>(bufferable.buffer->map());
133 Bufferable::AsyncUpdater::~AsyncUpdater()
135 bufferable.buffer->unmap();
138 void Bufferable::AsyncUpdater::upload_data()
140 bufferable.upload_data(mapped_address+bufferable.offset);
141 // Update all bufferables in the same buffer at once
142 for(const Bufferable *b=bufferable.prev_in_buffer; b; b=b->prev_in_buffer)
144 b->upload_data(mapped_address+b->offset);
145 for(const Bufferable *b=bufferable.next_in_buffer; b; b=b->next_in_buffer)
147 b->upload_data(mapped_address+b->offset);