source/select.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgl
   4 Copyright © 2007  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include "except.h"
   9 #include "gl.h"
  10 #include "select.h"
  11
  12 using namespace std;
  13
  14 namespace {
  15
  16 vector<Msp::GL::SelectRecord> *select_buf=0;
  17 vector<Msp::GL::uint> select_buf_int;
  18
  19 }
  20
  21 namespace Msp {
  22 namespace GL {
  23
  24 void select_buffer(vector<SelectRecord> &buf)
  25 {
  26         select_buf_int.resize(1024);
  27         glSelectBuffer(select_buf_int.size(), &select_buf_int[0]);
  28         select_buf=&buf;
  29 }
  30
  31 void parse_select_records(const uint *buf, uint count, vector<SelectRecord> &tbuf)
  32 {
  33         uint i=0;
  34         while(count--)
  35         {
  36                 SelectRecord record;
  37
  38                 uint n_names=buf[i++];
  39                 record.min_depth=buf[i++];
  40                 record.max_depth=buf[i++];
  41
  42                 record.names.reserve(n_names);
  43                 while(n_names--)
  44                         record.names.push_back(buf[i++]);
  45
  46                 tbuf.push_back(record);
  47         }
  48 }
  49
  50 void _parse_internal_select_records(uint count)
  51 {
  52         if(!select_buf)
  53                 throw InvalidState("No select buffer specified");
  54         parse_select_records(&select_buf_int[0], count, *select_buf);
  55 }
  56
  57 } // namespace GL
  58 } // namespace Msp