source/select.cpp

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