source/renderbuffer.cpp

   1 #include <msp/gl/extensions/arb_direct_state_access.h>
   2 #include <msp/gl/extensions/ext_framebuffer_multisample.h>
   3 #include <msp/gl/extensions/ext_framebuffer_object.h>
   4 #include "renderbuffer.h"
   5
   6 namespace Msp {
   7 namespace GL {
   8
   9 Renderbuffer::Renderbuffer()
  10 {
  11         static Require _req(EXT_framebuffer_object);
  12
  13         if(ARB_direct_state_access)
  14                 glCreateRenderbuffers(1, &id);
  15         else
  16                 glGenRenderbuffers(1, &id);
  17 }
  18
  19 Renderbuffer::~Renderbuffer()
  20 {
  21         glDeleteRenderbuffers(1, &id);
  22 }
  23
  24 void Renderbuffer::storage(PixelFormat fmt, unsigned wd, unsigned ht)
  25 {
  26         require_pixelformat(fmt);
  27         width = wd;
  28         height = ht;
  29         if(ARB_direct_state_access)
  30                 glNamedRenderbufferStorage(id, fmt, width, height);
  31         else
  32         {
  33                 BindRestore _bind(this);
  34                 glRenderbufferStorage(GL_RENDERBUFFER, fmt, width, height);
  35         }
  36 }
  37
  38 void Renderbuffer::storage_multisample(unsigned samples, PixelFormat fmt, unsigned wd, unsigned ht)
  39 {
  40         static Require _req(EXT_framebuffer_multisample);
  41         require_pixelformat(fmt);
  42
  43         width = wd;
  44         height = ht;
  45         if(ARB_direct_state_access)
  46                 glNamedRenderbufferStorageMultisample(id, samples, fmt, width, height);
  47         else
  48         {
  49                 BindRestore _bind(this);
  50                 glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples, fmt, width, height);
  51         }
  52 }
  53
  54 void Renderbuffer::bind() const
  55 {
  56         if(set_current(this))
  57                 glBindRenderbuffer(GL_RENDERBUFFER, id);
  58 }
  59
  60 void Renderbuffer::unbind()
  61 {
  62         if(set_current(0))
  63                 glBindRenderbuffer(GL_RENDERBUFFER, 0);
  64 }
  65
  66 } // namespace GL
  67 } // namespace Msp