source/bufferstate.cpp

   1 /* $Id$
   2
   3 This file is part of gldbg
   4 Copyright © 2009  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the GPL
   6 */
   7
   8 #include <msp/strings/formatter.h>
   9 #include "bufferstate.h"
  10 #include "enums.h"
  11
  12 using namespace std;
  13 using namespace Msp;
  14
  15 BufferState::BufferState():
  16         usage(GL_STATIC_DRAW),
  17         size(0),
  18         data(0)
  19 { }
  20
  21 void BufferState::set_data(unsigned sz, const void *ptr, GLenum use)
  22 {
  23         usage = use;
  24         size = sz;
  25         delete[] data;
  26         data = new char[size];
  27         if(ptr)
  28                 set_sub_data(0, size, ptr);
  29 }
  30
  31 void BufferState::set_sub_data(unsigned off, unsigned sz, const void *ptr)
  32 {
  33         if(data && off+sz<size)
  34         {
  35                 const char *cptr = reinterpret_cast<const char *>(ptr);
  36                 copy(cptr, cptr+sz, data+off);
  37         }
  38 }
  39
  40 string BufferState::describe() const
  41 {
  42         return format("%d bytes, %s", size, describe_enum(usage, ""));
  43 }