Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//
// mxToolKit (c) 1999 by Mete Ciragan
//
// file: mxGlWindow.cpp
// implementation: Win32 API
// last modified: Apr 21 1999, Mete Ciragan
// copyright: The programs and associated files contained in this
// distribution were developed by Mete Ciragan. The programs
// are not in the public domain, but they are freely
// distributable without licensing fees. These programs are
// provided without guarantee or warrantee expressed or
// implied.
//
#include "mxtk/mxGlWindow.h"
#include <windows.h>
//#include <ostream.h"
static int g_formatMode = mxGlWindow::FormatDouble;
static int g_formatColorBits = 24;
static int g_formatDepthBits = 16;
class mxGlWindow_i
{
public:
HDC hdc;
HGLRC hglrc;
};
mxGlWindow::mxGlWindow (mxWindow *parent, int x, int y, int w, int h, const char *label, int style)
: mxWindow (parent, x, y, w, h, label, style)
{
PIXELFORMATDESCRIPTOR pfd =
{
sizeof (PIXELFORMATDESCRIPTOR), // size of this pfd
1, // version number
PFD_DRAW_TO_WINDOW | // support window
PFD_SUPPORT_OPENGL | // support OpenGL
PFD_DOUBLEBUFFER, // double buffered
PFD_TYPE_RGBA, // RGBA type
24, // 24-bit color depth
0, 0, 0, 0, 0, 0, // color bits ignored
0, // no alpha buffer
0, // shift bit ignored
0, // no accumulation buffer
0, 0, 0, 0, // accum bits ignored
16, // 32-bit z-buffer
0, // no stencil buffer
0, // no auxiliary buffer
PFD_MAIN_PLANE, // main layer
0, // reserved
0, 0, 0 // layer masks ignored
};
d_this = new mxGlWindow_i;
pfd.cColorBits = g_formatColorBits;
pfd.cDepthBits = g_formatDepthBits;
bool error = false;
if ((d_this->hdc = GetDC ((HWND) getHandle ())) == NULL)
{
error = true;
goto done;
}
int pfm;
if ((pfm = ChoosePixelFormat (d_this->hdc, &pfd)) == 0)
{
error = true;
goto done;
}
if (SetPixelFormat (d_this->hdc, pfm, &pfd) == FALSE)
{
error = true;
goto done;
}
DescribePixelFormat (d_this->hdc, pfm, sizeof (pfd), &pfd);
if ((d_this->hglrc = wglCreateContext (d_this->hdc)) == 0)
{
error = true;
goto done;
}
if (!wglMakeCurrent (d_this->hdc, d_this->hglrc))
{
error = true;
goto done;
}
setType (MX_GLWINDOW);
setDrawFunc (0);
done:
if (error)
delete this;
}
mxGlWindow::~mxGlWindow ()
{
if (d_this->hglrc)
{
wglMakeCurrent (NULL, NULL);
//wglDeleteContext (d_this->hglrc);
}
if (d_this->hdc)
ReleaseDC ((HWND) getHandle (), d_this->hdc);
delete d_this;
}
int
mxGlWindow::handleEvent (mxEvent *event)
{
return 0;
}
void
mxGlWindow::redraw ()
{
makeCurrent ();
if (d_drawFunc)
d_drawFunc ();
else
draw ();
swapBuffers ();
}
void
mxGlWindow::draw ()
{
}
int
mxGlWindow::makeCurrent ()
{
if (wglMakeCurrent (d_this->hdc, d_this->hglrc))
return 1;
return 0;
}
int
mxGlWindow::swapBuffers ()
{
if (SwapBuffers (d_this->hdc))
return 1;
return 0;
}
void
mxGlWindow::setDrawFunc (void (*func) (void))
{
d_drawFunc = func;
}
void
mxGlWindow::setFormat (int mode, int colorBits, int depthBits)
{
g_formatMode = mode;
g_formatColorBits = colorBits;
g_formatDepthBits = depthBits;
}