source/renderbuffer.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 "extension.h"
   9 #include "ext_framebuffer_object.h"
  10 #include "renderbuffer.h"
  11
  12 namespace Msp {
  13 namespace GL {
  14
  15 Renderbuffer::Renderbuffer()
  16 {
  17         static RequireExtension _ext("GL_EXT_framebuffer_object");
  18
  19         glGenRenderbuffersEXT(1, &id);
  20         bind();
  21 }
  22
  23 Renderbuffer::~Renderbuffer()
  24 {
  25         glDeleteRenderbuffersEXT(1, &id);
  26 }
  27
  28 void Renderbuffer::storage(PixelFormat fmt, unsigned w, unsigned h)
  29 {
  30         bind();
  31         width = w;
  32         height = h;
  33         glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, fmt, width, height);
  34 }
  35
  36 void Renderbuffer::bind() const
  37 {
  38         if(set_current(this))
  39                 glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, id);
  40 }
  41
  42 void Renderbuffer::unbind()
  43 {
  44         if(set_current(0))
  45                 glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
  46 }
  47
  48 } // namespace GL
  49 } // namespace Msp