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         GLenum gl_fmt = get_gl_pixelformat(fmt);
  34         if(ARB_direct_state_access)
  35                 glNamedRenderbufferStorage(id, gl_fmt, width, height);
  36         else
  37         {
  38                 glBindRenderbuffer(GL_RENDERBUFFER, id);
  39                 glRenderbufferStorage(GL_RENDERBUFFER, gl_fmt, width, height);
  40                 glBindRenderbuffer(GL_RENDERBUFFER, 0);
  41         }
  42 }
  43
  44 unsigned Renderbuffer::get_max_samples()
  45 {
  46         return Limits::get_global().max_samples;
  47 }
  48
  49 void Renderbuffer::storage_multisample(unsigned samples, PixelFormat fmt, unsigned wd, unsigned ht)
  50 {
  51         if(!samples)
  52                 return storage(fmt, wd, ht);
  53
  54         static Require _req(EXT_framebuffer_multisample);
  55         if(samples>Limits::get_global().max_samples)
  56                 throw out_of_range("Renderbuffer::storage_multisample");
  57
  58         require_pixelformat(fmt);
  59
  60         width = wd;
  61         height = ht;
  62         GLenum gl_fmt = get_gl_pixelformat(fmt);
  63         if(ARB_direct_state_access)
  64                 glNamedRenderbufferStorageMultisample(id, samples, gl_fmt, width, height);
  65         else
  66         {
  67                 glBindRenderbuffer(GL_RENDERBUFFER, id);
  68                 glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples, gl_fmt, width, height);
  69                 glBindRenderbuffer(GL_RENDERBUFFER, 0);
  70         }
  71 }
  72
  73 void Renderbuffer::set_debug_name(const string &name)
  74 {
  75 #ifdef DEBUG
  76         if(KHR_debug)
  77                 glObjectLabel(GL_RENDERBUFFER, id, name.size(), name.c_str());
  78 #else
  79         (void)name;
  80 #endif
  81 }
  82
  83 } // namespace GL
  84 } // namespace Msp