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 PixelFormat Renderbuffer::normalize_format(PixelFormat fmt)
  25 {
  26         if(!get_component_size(fmt) && OES_required_internalformat)
  27                 return get_default_sized_pixelformat(fmt);
  28
  29         return fmt;
  30 }
  31
  32 void Renderbuffer::storage(PixelFormat fmt, unsigned wd, unsigned ht)
  33 {
  34         fmt = normalize_format(fmt);
  35         require_pixelformat(fmt);
  36         width = wd;
  37         height = ht;
  38         if(ARB_direct_state_access)
  39                 glNamedRenderbufferStorage(id, fmt, width, height);
  40         else
  41         {
  42                 BindRestore _bind(this);
  43                 glRenderbufferStorage(GL_RENDERBUFFER, fmt, width, height);
  44         }
  45 }
  46
  47 void Renderbuffer::storage_multisample(unsigned samples, PixelFormat fmt, unsigned wd, unsigned ht)
  48 {
  49         static Require _req(EXT_framebuffer_multisample);
  50         fmt = normalize_format(fmt);
  51         require_pixelformat(fmt);
  52
  53         width = wd;
  54         height = ht;
  55         if(ARB_direct_state_access)
  56                 glNamedRenderbufferStorageMultisample(id, samples, fmt, width, height);
  57         else
  58         {
  59                 BindRestore _bind(this);
  60                 glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples, fmt, width, height);
  61         }
  62 }
  63
  64 void Renderbuffer::bind() const
  65 {
  66         if(set_current(this))
  67                 glBindRenderbuffer(GL_RENDERBUFFER, id);
  68 }
  69
  70 void Renderbuffer::unbind()
  71 {
  72         if(set_current(0))
  73                 glBindRenderbuffer(GL_RENDERBUFFER, 0);
  74 }
  75
  76 } // namespace GL
  77 } // namespace Msp