source/window.cpp

   1 #include <vector>
   2 #include <GL/glx.h>
   3 #include <msp/core/error.h>
   4 #include "window.h"
   5
   6 using namespace std;
   7
   8 namespace Msp {
   9 namespace GLtk {
  10
  11 DisplayOptions::DisplayOptions():
  12         width(640),
  13         height(480),
  14         depth(24),
  15         alpha(false),
  16         doublebuffer(false),
  17         multisample(0),
  18         fullscreen(false)
  19 { }
  20
  21
  22 Window::Window(unsigned w, unsigned h)
  23 {
  24         DisplayOptions dopt;
  25         dopt.width=w;
  26         dopt.height=h;
  27
  28         init(dopt);
  29 }
  30
  31 Window::Window(const DisplayOptions &dopt)
  32 {
  33         init(dopt);
  34 }
  35
  36 Window::~Window()
  37 {
  38         XCloseDisplay(display);
  39 }
  40
  41 void Window::init(const DisplayOptions &dopt)
  42 {
  43         display=XOpenDisplay(0);
  44         if(!display)
  45                 throw Exception("Couldn't open X display");
  46
  47         vector<int> attribs;
  48         attribs.push_back(GLX_BUFFER_SIZE);
  49         attribs.push_back(dopt.depth);
  50         attribs.push_back(GLX_DOUBLEBUFFER);
  51         attribs.push_back(1);
  52         if(dopt.multisample>0)
  53         {
  54                 attribs.push_back(GLX_SAMPLE_BUFFERS_ARB);
  55                 attribs.push_back(dopt.multisample);
  56         }
  57
  58         XVisualInfo *visual=glXChooseVisual(display, DefaultScreen(display), &attribs.front());
  59         if(!visual)
  60                 throw Exception("Couldn't get a matching visual");
  61
  62         window=XCreateWindow(display, DefaultRootWindow(display), 0, 0, dopt.width, dopt.height, 0, CopyFromParent, InputOutput, visual->visual, 0, 0);
  63 }
  64
  65 } // namespace GLtk
  66 } // namespace Msp