source/core/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 <msp/gl/extensions/khr_debug.h>
   5 #include "deviceinfo.h"
   6 #include "renderbuffer.h"
   7
   8 using namespace std;
   9
  10 namespace Msp {
  11 namespace GL {
  12
  13 Renderbuffer::Renderbuffer()
  14 {
  15         static Require _req(EXT_framebuffer_object);
  16
  17         if(ARB_direct_state_access)
  18                 glCreateRenderbuffers(1, &id);
  19         else
  20                 glGenRenderbuffers(1, &id);
  21 }
  22
  23 Renderbuffer::~Renderbuffer()
  24 {
  25         glDeleteRenderbuffers(1, &id);
  26 }
  27
  28 void Renderbuffer::storage(PixelFormat fmt, unsigned wd, unsigned ht)
  29 {
  30         require_pixelformat(fmt);
  31         width = wd;
  32         height = ht;
  33         if(ARB_direct_state_access)
  34                 glNamedRenderbufferStorage(id, fmt, width, height);
  35         else
  36         {
  37                 BindRestore _bind(this);
  38                 glRenderbufferStorage(GL_RENDERBUFFER, fmt, width, height);
  39         }
  40 }
  41
  42 unsigned Renderbuffer::get_max_samples()
  43 {
  44         return Limits::get_global().max_samples;
  45 }
  46
  47 void Renderbuffer::storage_multisample(unsigned samples, PixelFormat fmt, unsigned wd, unsigned ht)
  48 {
  49         if(!samples)
  50                 return storage(fmt, wd, ht);
  51
  52         static Require _req(EXT_framebuffer_multisample);
  53         if(samples>Limits::get_global().max_samples)
  54                 throw out_of_range("Renderbuffer::storage_multisample");
  55
  56         require_pixelformat(fmt);
  57
  58         width = wd;
  59         height = ht;
  60         if(ARB_direct_state_access)
  61                 glNamedRenderbufferStorageMultisample(id, samples, fmt, width, height);
  62         else
  63         {
  64                 BindRestore _bind(this);
  65                 glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples, fmt, width, height);
  66         }
  67 }
  68
  69 void Renderbuffer::bind() const
  70 {
  71         if(set_current(this))
  72                 glBindRenderbuffer(GL_RENDERBUFFER, id);
  73 }
  74
  75 void Renderbuffer::unbind()
  76 {
  77         if(set_current(0))
  78                 glBindRenderbuffer(GL_RENDERBUFFER, 0);
  79 }
  80
  81 void Renderbuffer::set_debug_name(const string &name)
  82 {
  83 #ifdef DEBUG
  84         if(KHR_debug)
  85                 glObjectLabel(GL_RENDERBUFFER, id, name.size(), name.c_str());
  86 #else
  87         (void)name;
  88 #endif
  89 }
  90
  91 } // namespace GL
  92 } // namespace Msp