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OpenGLDevice.cpp
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OpenGLDevice.cpp
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//////////////////////////////////////////////////////////////////////
// OpenGLDevice.cpp: Implementierung der Klasse OpenGLDevice.
//
// Copyright by André Stein
// E-Mail: [email protected], [email protected]
// http://www.steinsoft.net
//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
// Klassenname: OpenGLDevice
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "OpenGLDevice.h"
//////////////////////////////////////////////////////////////////////
// Konstruktion/Destruktion
//////////////////////////////////////////////////////////////////////
OpenGLDevice::OpenGLDevice()
{
renderContext = NULL;
}
OpenGLDevice::~OpenGLDevice()
{
destroy();
}
OpenGLDevice::OpenGLDevice(HWND& window,int stencil)
{
create(window,stencil);
}
OpenGLDevice::OpenGLDevice(HDC& deviceContext,int stencil)
{
create(deviceContext,stencil);
}
//////////////////////////////////////////////////////////////////////
// Öffentliche Funktionen
//////////////////////////////////////////////////////////////////////
bool OpenGLDevice::create(HWND& window,int stencil)
{
HDC deviceContext = ::GetDC(window);
if (!create(deviceContext,stencil))
{
::ReleaseDC(window, deviceContext);
return false;
}
::ReleaseDC(window, deviceContext);
return true;
}
bool OpenGLDevice::create(HDC& deviceContext,int stencil)
{
if (!deviceContext)
{
return false;
}
if (!setDCPixelFormat(deviceContext,stencil))
{
return false;
}
renderContext = wglCreateContext(deviceContext);
wglMakeCurrent(deviceContext, renderContext);
return true;
}
void OpenGLDevice::destroy()
{
if (renderContext != NULL)
{
wglMakeCurrent(NULL,NULL);
wglDeleteContext(renderContext);
}
}
//////////////////////////////////////////////////////////////////////
// Protected-Funktionen
//////////////////////////////////////////////////////////////////////
bool OpenGLDevice::setDCPixelFormat(HDC& deviceContext,int stencil)
{
int pixelFormat;
DEVMODE resolution;
//PIXELFORMAT->BPP = DESKTOP->BPP
EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &resolution);
static PIXELFORMATDESCRIPTOR pixelFormatDesc =
{
sizeof (PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW |
PFD_SUPPORT_OPENGL |
PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA,
resolution.dmBitsPerPel,
0, 0, 0, 0, 0, 0,
0,
0,
0,
0, 0, 0, 0,
24,
stencil,
0,
PFD_MAIN_PLANE,
0,
0, 0, 0
};
pixelFormat = ChoosePixelFormat (deviceContext,
&pixelFormatDesc);
pixelFormat = GetPixelFormat(deviceContext);
LPPIXELFORMATDESCRIPTOR ppfd = &pixelFormatDesc;
DescribePixelFormat(deviceContext, pixelFormat, sizeof(PIXELFORMATDESCRIPTOR), ppfd);
if (!SetPixelFormat(deviceContext, pixelFormat,
&pixelFormatDesc))
{
return false ;
}
return true;
}