source/backends/opengl/systemframebuffer.cpp

   1 #include <msp/gl/extensions/ext_framebuffer_object.h>
   2 #include "gl.h"
   3 #include "systemframebuffer.h"
   4
   5 namespace Msp {
   6 namespace GL {
   7
   8 OpenGLSystemFramebuffer::OpenGLSystemFramebuffer():
   9         Framebuffer(true)
  10 {
  11         FrameFormat sys_format;
  12
  13         if(EXT_framebuffer_object)
  14         {
  15                 int value;
  16                 glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_BACK, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
  17                 if(value==GL_NONE)
  18                         glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_FRONT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
  19                 if(value!=GL_NONE)
  20                         sys_format = (sys_format, COLOR_ATTACHMENT);
  21
  22                 glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_DEPTH, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
  23                 if(value!=GL_NONE)
  24                         sys_format = (sys_format, DEPTH_ATTACHMENT);
  25
  26                 glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_STENCIL, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
  27                 if(value!=GL_NONE)
  28                         sys_format = (sys_format, STENCIL_ATTACHMENT);
  29         }
  30         else
  31                 // Make a guess if we can't query the format
  32                 sys_format = (COLOR_ATTACHMENT, DEPTH_ATTACHMENT);
  33
  34         set_system_format(sys_format);
  35 }
  36
  37 void OpenGLSystemFramebuffer::resize(unsigned w, unsigned h)
  38 {
  39         resize_system(w, h);
  40 }
  41
  42 } // namespace GL
  43 } // namespace Msp